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1. Genotyping-by-sequencing-based identification of Arabidopsis pattern recognition receptor RLP32 recognizing proteobacterial translation initiation factor IF1

Author

Li Fan, Katja Fröhlich, Eric Melzer, Rory N. Pruitt, Isabell Albert, Lisha Zhang, Anna Joe, Chenlei Hua, Yanyue Song, Markus Albert, Sang-Tae Kim, Detlef Weigel, Cyril Zipfel, Eunyoung Chae, Andrea A. Gust, and Thorsten Nürnberger

Subjects
Science
Abstract

Pattern-triggered immunity is activated by recognition of microbe-derived structures by host pattern recognition receptors. Here the authors use a genotype-by sequencing approach to show that bacterial translation initiation factor 1 triggers PTI in Arabidopsis thaliana after recognition by the RLP32 receptor.

Published
2022
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2. A cell wall-localized glycine-rich protein of dodder acts as pathogen-associated molecular pattern

Author

Peter Slaby, Max Körner, and Markus Albert

Subjects
glycine-rich protein, grp, parasitic plants, cuscuta reflexa, cure1, Biology (General), QH301-705.5
Abstract

Cuscuta reflexa (giant dodder) is an obligate stem holoparasite withdrawing water, nutrients, and carbohydrates from its hosts. For a broad spectrum of host plants, C. reflexa usually stays unrecognized. The cultivated tomato Solanum lycopersicum, as one notable exception, possesses a leucine-rich repeat receptor protein (LRR-RP), Cuscuta receptor 1 (CuRe1), which enables tomato to recognize C. reflexa as a dangerous parasitic invader and to respond with plant immune responses. During the infection process, a glycine-rich protein (GRP) is freed from C. reflexa and gets detected by CuRe1. Here, we focus on the subcellular localization of the GRP within plant cell walls using a fluorescence based co-localization.

Published
2021
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3. The tomato receptor CuRe1 senses a cell wall protein to identify Cuscuta as a pathogen

Author

Volker Hegenauer, Peter Slaby, Max Körner, Julien-Alexander Bruckmüller, Ronja Burggraf, Isabell Albert, Bettina Kaiser, Birgit Löffelhardt, Irina Droste-Borel, Jan Sklenar, Frank L. H. Menke, Boris Maček, Aashish Ranjan, Neelima Sinha, Thorsten Nürnberger, Georg Felix, Kirsten Krause, Mark Stahl, and Markus Albert

Subjects
Science
Abstract

Parasitic plants such as Cuscuta penetrate the shoots of susceptible hosts to obtain sugars, solutes and water. Here the authors show that resistant varieties of tomato can trigger an immune response against Cuscuta by perceiving a small glycine rich protein produced by the parasite.

Published
2020
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4. Complex N-Glycans Are Important for Normal Fruit Ripening and Seed Development in Tomato

Author

Heidi Kaulfürst-Soboll, Melanie Mertens-Beer, Randolf Brehler, Markus Albert, and Antje von Schaewen

Subjects
auxin-like effects, complex N-glycans, GNTI, hormone signaling, free N-glycans, fruit abscission, Plant culture, SB1-1110
Abstract

Complex N-glycan modification of secretory glycoproteins in plants is still not well understood. Essential in animals, where a lack of complex N-glycans is embryo-lethal, their presence in plants seemed less relevant for a long time mostly because Arabidopsis thaliana cgl1 mutants lacking N-acetyl-glucosaminyltransferase I (GNTI, the enzyme initiating complex N-glycan maturation in the Golgi apparatus) are viable and showed only minor impairments regarding stress tolerance or development. A different picture emerged when a rice (Oryza sativa) gntI T-DNA mutant was found to be unable to reach the reproductive stage. Here, we report on tomato (Solanum lycopersicum) lines that showed severe impairments upon two RNA interference (RNAi) approaches. Originally created to shed light on the role of core α1,3-fucose and β1,2-xylose residues in food allergy, plants with strongly reduced GNTI activity developed necrotic fruit-attached stalks and early fruit drop combined with patchy incomplete ripening. Correspondingly, semiquantitative RT-PCR of the abscission zone (az) revealed an increase of abscission markers. Also, GNTI-RNA interference (RNAi) plants were more susceptible to sporadic infection. To obtain vital tomatoes with comparable low allergenic potential, Golgi α-mannosidase II (MANII) was chosen as the second target. The resulting phenotypes were oppositional: MANII-reduced plants carried normal-looking fruits that remained attached for extended time without signs of necrosis. Fruits contained no or only few, but enlarged, seeds. Furthermore, leaves developed rolled-up rims simultaneously during the reproductive stage. Trials to cross MANII-reduced plants failed, while GNTI-reduced plants could be (back-)crossed, retaining their characteristic phenotype. This phenotype could not be overcome by ethephon or indole-3-acetic acid (IAA) application, but the latter was able to mimic patchy fruit ripening in wild-type. Phytohormones measured in leaves and 1-aminocyclopropane-1-carboxylic acid (ACC) contents in fruits showed no significant differences. Together, the findings hint at altered liberation/perception of protein-bound N-glycans, known to trigger auxin-like effects. Concomitantly, semiquantitative RT-PCR analysis revealed differences in auxin-responsive genes, indicating the importance of complex N-glycan modification for hormone signaling/crosstalk. Another possible role of altered glycoprotein life span seems subordinate, as concluded from transient expression of Arabidopsis KORRIGAN KOR1-GFP fusion proteins in RNAi plants of Nicotiana benthamiana. In summary, our analyses stress the importance of complex N-glycan maturation for normal plant responses, especially in fruit-bearing crops like tomato.

Published
2021
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5. Growth Assay for the Stem Parasitic Plants of the Genus Cuscuta

Author

Volker Hegenauer, Max Welz, Max Körner, and Markus Albert

Subjects
Biology (General), QH301-705.5
Abstract

Cuscuta spp. are widespread obligate holoparasitic plants with a broad host spectrum. Rootless Cuscuta penetrates host stems with so called haustoria to form a direct connection to the host vascular tissue (Dawson et al., 1994; Lanini and Kogan, 2005; Kaiser et al., 2015). This connection allows a steady uptake of water, assimilates and essential nutrients from the host plant and therefore enables Cuscuta growth and proliferation. To quantify the parasites’ ability to grow on potential host plants one can use the quantitative growth assay (Hegenauer et al., 2016) described herein, which exclusively utilizes fresh weight measurement as readout.

Published
2017
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6. Parasitic Cuscuta factor(s) and the detection by tomato initiates plant defense

Author

Ursula Fürst, Volker Hegenauer, Bettina Kaiser, Max Körner, Max Welz, and Markus Albert

Subjects
Cuscuta, Cuscuta factor, parasitic plant, pattern recognition receptor, plant immunity, plant-plant interaction, Biology (General), QH301-705.5
Abstract

Dodders (Cuscuta spp.) are holoparasitic plants that enwind stems of host plants and penetrate those by haustoria to connect to the vascular bundles. Having a broad host plant spectrum, Cuscuta spp infect nearly all dicot plants – only cultivated tomato as one exception is mounting an active defense specifically against C. reflexa. In a recent work we identified a pattern recognition receptor of tomato, “Cuscuta Receptor 1“ (CuRe1), which is critical to detect a “Cuscuta factor” (CuF) and initiate defense responses such as the production of ethylene or the generation of reactive oxygen species. CuRe1 also contributes to the tomato resistance against C. reflexa. Here we point to the fact that CuRe1 is not the only relevant component for full tomato resistance but it requires additional defense mechanisms, or receptors, respectively, to totally fend off the parasite.

Published
2016
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7. Chemiluminescence Detection of the Oxidative Burst in Plant Leaf Pieces

Author

Markus Albert, Melinka Butenko, Reidunn Aalen, Georg Felix, and Mari Wildhagen

Subjects
Biology (General), QH301-705.5
Abstract

The production of 'reactive oxygen species' (ROS), also termed oxidative burst, is a typical cellular response of animals and plants to diverse biotic and abiotic stresses. Here, we outline the detection of the ROS-burst in plant leaf pieces using a luminol-based bioassay which allows for the detection of chemiluminescence. The assay was originally described by Keppler et al. (1989) and subsequently adapted for other plant cells and tissues (Felix et al., 1999) and also used in recent publications (Albert et al., 2013; Albert et al., 2010; Butenko et al., 2014; Halter et al., 2014). In this protocol we outline a standardized version of this assay including remarks and recommendations for data evaluation and interpretation of results.

Published
2015
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8. A Chemiluminescence Based Receptor-ligand Binding Assay Using Peptide Ligands with an Acridinium Ester Label

Author

Mari Wildhagen, Melinka Butenko, Reidunn Aalen, Georg Felix, and Markus Albert

Subjects
Biology (General), QH301-705.5
Abstract

Studying the biochemical interaction of ligands with their corresponding receptors requires highly sensitive detection and monitoring of the bound ligand. Classically, radioactively labelled ligands have been widely used as highly sensitive tools for such binding measurements. Disadvantages of radiolabelling include instability of products, high costs and risks of working with radioactivity. Thus, assays using chemiluminescent probes offer convenient, highly sensitive alternatives. Here we suggest acridinium esters as suitable conjugates to label ligands of interest. Chemical oxidation of acridinium esters triggers chemiluminescence, allowing quantitation of this compound down to amol concentrations in standard luminometers. The first report about acridinium esters in immunoassays date back to 1983 (Weeks et al., 1983) and demonstrated the ability to conjugate acridinium to peptides, followed by using such peptides to measure receptor – peptide ligand interactions (Joss and Towbin, 1994). Recently, this binding assay was adapted for studying derivatives of the plant peptide IDA (INFLORESCENCE DEFICIENT IN ABSCISSION) and their interaction with the corresponding receptor HSL2 (HAESA-LIKE 2) was reported (Butenko et al., 2014). Here we describe how this sensitive, nonradioactive binding approach can be used to reveal receptor-ligand binding in plant material.

Published
2015
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9. The plant vampire diaries: a historic perspective on Cuscuta research

Author

Maleen Hartenstein, Markus Albert, and Kirsten Krause

Subjects
Physiology, Plant Science
Abstract

The angiosperm genus Cuscuta lives as an almost achlorophyllous root- and leafless holoparasite and has therefore occupied scientists for more than a century. The ‘evolution’ of Cuscuta research started with early studies that established the phylogenetic framework for this unusual genus. It continued to produce groundbreaking cytological, morphological, and physiological insight throughout the second half of the 20th century and culminated in the last two decades in exciting discoveries regarding the molecular basis of Cuscuta parasitism that were facilitated by the modern ‘omics’ tools and traceable fluorescent marker technologies of the 21st century. This review will show how present activities are inspired by those past breakthroughs. It will describe significant milestones and recurring themes of Cuscuta research and connect these to the remaining as well as newly evolving questions and future directions in this research field that is expected to sustain its strong growth in the future.

Published
2023

10. Engineered Agrobacterium improves transformation by mitigating plant immunity detection

Author

Fan Yang, Guangyong Li, Georg Felix, Markus Albert, and Ming Guo

Subjects
Physiology, Plant Science
Abstract

Agrobacterium tumefaciens MAMP elongation factor Tu (EF-Tu) is perceived by orthologs of the Arabidopsis immune receptor EFR activating PTI that cause reduced T-DNA-mediated transient expression. We altered EF-Tu in A. tumefaciens to reduce PTI and improved transformation efficiency. A robust computational pipeline was established to detect EF-Tu protein variation in a large set of plant bacterial species and identified EF-Tu variants from bacterial pathogen Pseudomonas syringae pv. tomato DC3000 that allow the pathogen to escape EFR perception. A. tumefaciens strains were engineered to substitute EF-Tu with DC3000 variants and examined their transformation efficiency in plants. EF-Tu variants with rarely occurred amino acid residues were identified within DC3000 EF-Tu that mitigates recognition by EFR. A. tumefaciens strains were engineered by expressing DC3000 EF-Tu instead of native agrobacterial EF-Tu and resulted in decreased plant immunity detection. These engineered A. tumefaciens strains displayed an increased efficiency in transient expression in both Arabidopsis thaliana and Camelina sativa. The results support the potential application of these strains as improved vehicles to introduce transgenic alleles into members of the Brassicaceae family.

Published
2023

25. Distinct immune sensor systems for fungal endopolygalacturonases in closely related Brassicaceae

Author

Lei Wang, Isabell Albert, Markus Albert, Si Qin, Chenlei Hua, Jan A. L. van Kan, Lisha Zhang, Thorsten Nürnberger, and Rory N Pruitt

Subjects
Genetics, biology, Complex formation, fungi, Pattern recognition receptor, Plant Immunity, food and beverages, Brassicaceae, Plant Science, biology.organism_classification, Arabidopsis arenosa, Laboratorium voor Phytopathologie, Immune system, Brassica rapa, Laboratory of Phytopathology, Arabidopsis thaliana, Life Science, EPS
Abstract

Plant pattern recognition receptors (PRRs) facilitate recognition of microbial patterns and mediate activation of plant immunity. Arabidopsis thaliana RLP42 senses fungal endopolygalacturonases (PGs) and triggers plant defence through complex formation with SOBIR1 and SERK co-receptors. Here, we show that a conserved 9-amino-acid fragment pg9(At) within PGs is sufficient to activate RLP42-dependent plant immunity. Structure-function analysis reveals essential roles of amino acid residues within the RLP42 leucine-rich repeat and island domains for ligand binding and PRR complex assembly. Sensitivity to pg9(At), which is restricted to A. thaliana and exhibits scattered accession specificity, is unusual for known PRRs. Arabidopsis arenosa and Brassica rapa, two Brassicaceae species closely related to A. thaliana, respectively perceive immunogenic PG fragments pg20(Aa) and pg36(Bra), which are structurally distinct from pg9(At). Our study provides evidence for rapid evolution of polymorphic PG sensors with distinct pattern specificities within a single plant family.

Published
2021

26. Mechanisms of resistance and virulence in parasitic plant–host interactions

Author

Michael J. Axtell, Markus Albert, and Michael P. Timko

Subjects
Crops, Agricultural, 0106 biological sciences, Plant growth, Physiology, Parasitic plant, Virulence, Parasitism, Plant Science, medicine.disease_cause, 01 natural sciences, Host-Parasite Interactions, 03 medical and health sciences, Focus Issue on Parasitic Plants, Infestation, Parasitic Diseases, Genetics, medicine, Plant Immunity, Autotroph, 030304 developmental biology, 0303 health sciences, Resistance (ecology), biology, Host (biology), Ecology, fungi, food and beverages, biology.organism_classification, United States, 010606 plant biology & botany
Abstract

Parasitic plants pose a major biotic threat to plant growth and development and lead to losses in crop productivity of billions of USD annually. By comparison with “normal” autotrophic plants, parasitic plants live a heterotrophic lifestyle and rely on water, solutes and to a greater (holoparasitic plants) or lesser extent (hemiparasitic plants) on sugars from other host plants. Most hosts are unable to detect an infestation by plant parasites or unable to fend off these parasitic invaders. However, a few hosts have evolved defense strategies to avoid infestation or protect themselves actively post-attack often leading to full or partial resistance. Here, we review the current state of our understanding of the defense strategies to plant parasitism used by host plants with emphasis on the active molecular resistance mechanisms. Furthermore, we outline the perspectives and the potential of future studies that will be indispensable to develop and breed resistant crops.

Published
2020

27. Perception of Agrobacterium tumefaciens flagellin by FLS2XL confers resistance to crown gall disease

Author

Georg Felix, Markus Albert, Ursula Fürst, Yi Zeng, Anna Kristina Witte, and Judith Fliegmann

Subjects
0106 biological sciences, 0301 basic medicine, Genetics, Innate immune system, biology, fungi, food and beverages, Plant Science, Agrobacterium tumefaciens, Flagellum, biology.organism_classification, 01 natural sciences, Epitope, 03 medical and health sciences, 030104 developmental biology, biology.protein, Gall, Ectopic expression, Gene, Flagellin, 010606 plant biology & botany
Abstract

Bacterial flagella are perceived by the innate immune systems of plants1 and animals2 alike, triggering resistance. Common to higher plants is the immunoreceptor FLAGELLIN-SENSING 2 (FLS2)3, which detects flagellin via its most conserved epitope, flg22. Agrobacterium tumefaciens, which causes crown gall disease in many crop plants, has a highly diverged flg22 epitope and evades immunodetection by plants so far studied. We asked whether, as a next step in this game of 'hide and seek', there are plant species that have evolved immunoreceptors with specificity for the camouflaged flg22Atum of A. tumefaciens. In the wild grape species Vitis riparia, we discovered FLS2XL, a previously unknown form of FLS2, that provides exquisite sensitivity to typical flg22 and to flg22Atum. As exemplified by ectopic expression in tobacco, FLS2XL can limit crown gall disease caused by A. tumefaciens.

Published
2020

28. Genotyping-by-sequencing-based identification of Arabidopsis pattern recognition receptor RLP32 recognizing proteobacterial translation initiation factor IF1

Author

Li, Fan, Katja, Fröhlich, Eric, Melzer, Rory N, Pruitt, Isabell, Albert, Lisha, Zhang, Anna, Joe, Chenlei, Hua, Yanyue, Song, Markus, Albert, Sang-Tae, Kim, Detlef, Weigel, Cyril, Zipfel, Eunyoung, Chae, Andrea A, Gust, and Thorsten, Nürnberger

Subjects
Genotype, Arabidopsis Proteins, Receptors, Pattern Recognition, Proteobacteria, Arabidopsis, Pseudomonas syringae, Plant Immunity, Prokaryotic Initiation Factors, Plant Diseases
Abstract

Activation of plant pattern-triggered immunity (PTI) relies on the recognition of microbe-derived structures, termed patterns, through plant-encoded surface-resident pattern recognition receptors (PRRs). We show that proteobacterial translation initiation factor 1 (IF1) triggers PTI in Arabidopsis thaliana and related Brassicaceae species. Unlike for most other immunogenic patterns, IF1 elicitor activity cannot be assigned to a small peptide epitope, suggesting that tertiary fold features are required for IF1 receptor activation. We have deployed natural variation in IF1 sensitivity to identify Arabidopsis leucine-rich repeat (LRR) receptor-like protein 32 (RLP32) as IF1 receptor using a restriction site-associated DNA sequencing approach. RLP32 confers IF1 sensitivity to rlp32 mutants, IF1-insensitive Arabidopsis accessions and IF1-insensitive Nicotiana benthamiana, binds IF1 specifically and forms complexes with LRR receptor kinases SOBIR1 and BAK1 to mediate signaling. Similar to other PRRs, RLP32 confers resistance to Pseudomonas syringae, highlighting an unexpectedly complex array of bacterial pattern sensors within a single plant species.

Published
2021

29. Genotyping-by-sequencing-based identification of Arabidopsis pattern recognition receptor RLP32 recognizing proteobacterial translation initiation factor IF1

Author

Li Fan, Katja Fröhlich, Eric Melzer, Isabell Albert, Rory N. Pruitt, Lisha Zhang, Markus Albert, Sang-Tae Kim, Eunyoung Chae, Detlef Weigel, Andrea A. Gust, and Thorsten Nürnberger

Abstract

Pattern-triggered immunity (PTI) is a central component of plant immunity. Activation of PTI relies on the recognition of microbe-derived structures, termed patterns, through plant encoded surface-resident pattern recognition receptors (PRRs). We have identified proteobacterial translation initiation factor 1 (IF1) as an immunogenic pattern that triggers PTI in Arabidopsis thaliana and some related Brassicaceae species. Unlike most other immunogenic patterns identified, IF1 elicitor activity cannot be assigned to a small peptide epitope, suggesting that tertiary fold features are required for IF1 receptor activation. We have deployed natural variation in IF1 sensitivity to identify leucine-rich repeat (LRR) receptor-like protein 32 (RLP32) as the corresponding Arabidopsis receptor using a restriction site-associated DNA sequencing (RAD-seq) approach. Transgenic expression of RLP32 confers IF1 sensitivity to rlp32 mutants, IF1-insensitive Arabidopsis accessions and IF1-insensitive Nicotiana benthamiana. RLP32 binds IF1 specifically and forms complexes with LRR receptor kinases SOBIR1 and BAK1 to mediate signaling. Similar to previously identified PRRs RLP32 confers resistance to Pseudomonas syringae infection, highlighting an unexpectedly complex array of bacterial pattern sensors within a single plant species.

Published
2021

30. Distinct immune sensor systems for fungal endopolygalacturonases in closely related Brassicaceae

Author

Lisha, Zhang, Chenlei, Hua, Rory N, Pruitt, Si, Qin, Lei, Wang, Isabell, Albert, Markus, Albert, Jan A L, van Kan, and Thorsten, Nürnberger

Subjects
Polygalacturonase, Genotype, Gene Expression Regulation, Plant, Tobacco, Arabidopsis, Genetic Variation, Plant Immunity, Brassica, Genes, Plant, Plants, Genetically Modified, Plant Diseases
Abstract

Plant pattern recognition receptors (PRRs) facilitate recognition of microbial patterns and mediate activation of plant immunity. Arabidopsis thaliana RLP42 senses fungal endopolygalacturonases (PGs) and triggers plant defence through complex formation with SOBIR1 and SERK co-receptors. Here, we show that a conserved 9-amino-acid fragment pg9(At) within PGs is sufficient to activate RLP42-dependent plant immunity. Structure-function analysis reveals essential roles of amino acid residues within the RLP42 leucine-rich repeat and island domains for ligand binding and PRR complex assembly. Sensitivity to pg9(At), which is restricted to A. thaliana and exhibits scattered accession specificity, is unusual for known PRRs. Arabidopsis arenosa and Brassica rapa, two Brassicaceae species closely related to A. thaliana, respectively perceive immunogenic PG fragments pg20(Aa) and pg36(Bra), which are structurally distinct from pg9(At). Our study provides evidence for rapid evolution of polymorphic PG sensors with distinct pattern specificities within a single plant family.

Published
2020

31. The systemin receptor SYR1 enhances resistance of tomato against herbivorous insects

Author

Judith Fliegmann, Marilia Almeida-Trapp, Georg Felix, Elias Einig, Hubert Kalbacher, Lei Wang, Markus Albert, and Axel Mithöfer

Subjects
0106 biological sciences, 0301 basic medicine, media_common.quotation_subject, medicine.medical_treatment, Receptors, Cell Surface, Peptide, Plant Science, Insect, Biology, 01 natural sciences, Substrate Specificity, 03 medical and health sciences, chemistry.chemical_compound, Solanum lycopersicum, Plant Growth Regulators, medicine, Brassinosteroid, Herbivory, Receptor, Plant Proteins, media_common, chemistry.chemical_classification, Kinase, fungi, Systemin, Cell biology, Steroid hormone, 030104 developmental biology, chemistry, Peptides, 010606 plant biology & botany, Hormone
Abstract

The discovery in tomato of systemin, the first plant peptide hormone1,2, was a fundamental change for the concept of plant hormones. Numerous other peptides have since been shown to play regulatory roles in many aspects of the plant life, including growth, development, fertilization and interactions with symbiotic organisms3-6. Systemin, an 18 amino acid peptide derived from a larger precursor protein 7 , was proposed to act as the spreading signal that triggers systemic defence responses observed in plants after wounding or attack by herbivores1,7,8. Further work culminated in the identification of a leucine-rich repeat receptor kinase (LRR-RK) as the systemin receptor 160 (SR160)9,10. SR160 is a tomato homologue of Brassinosteroid Insensitive 1 (BRI1), which mediates the regulation of growth and development in response to the steroid hormone brassinolide11-13. However, a role of SR160/BRI1 as systemin receptor could not be corroborated by others14-16. Here, we demonstrate that perception of systemin depends on a pair of distinct LRR-RKs termed SYR1 and SYR2. SYR1 acts as a genuine systemin receptor that binds systemin with high affinity and specificity. Further, we show that presence of SYR1, although not decisive for local and systemic wound responses, is important for defence against insect herbivory.

Published
2018

32. Staphylococcus aureus surgical site infection rates in 5 European countries

Author

Sibylle C. Mellinghoff, Caroline Bruns, Markus Albertsmeier, Juliane Ankert, Louis Bernard, Sofia Budin, Camille Bataille, Annika Y. Classen, Florian B. Cornely, Elodie Couvé-Deacon, Maria Fernandez Ferrer, Jesús Fortún, Alicia Galar, Eva Grill, Thomas Guimard, Jürgen A. Hampl, Sebastian Wingen-Heimann, Juan P. Horcajada, Felix Köhler, Carolin Koll, Joan Mollar, Patricia Muñoz, Mathias W. Pletz, Jule Rutz, Jon Salmanton-García, Harald Seifert, Ferdinand Serracino-Inglott, Alex Soriano, Jannik Stemler, Janne J. Vehreschild, Tim O. Vilz, Jan-Hendrik Naendrup, Oliver A. Cornely, and Blasius J. Liss

Subjects
Surgical site infection, Staphylococcus aureus, Hospital acquired infection, Infectious and parasitic diseases, RC109-216
Abstract

Abstract Objective To determine the overall and procedure-specific incidence of surgical site infections (SSI) caused by Staphylococcus aureus (S. aureus) as well as risk factors for such across all surgical disciplines in Europe. Methods This is a retrospective cohort of patients with surgical procedures performed at 14 European centres in 2016, with a nested case–control analysis. S. aureus SSI were identified by a semi-automated crossmatching bacteriological and electronic health record data. Within each surgical procedure, cases and controls were matched using optimal propensity score matching. Results A total of 764 of 178 902 patients had S. aureus SSI (0.4%), with 86.0% of these caused by methicillin susceptible and 14% by resistant pathogens. Mean S. aureus SSI incidence was similar for all surgical specialties, while varying by procedure. Conclusions This large procedure-independent study of S. aureus SSI proves a low overall infection rate of 0.4% in this cohort. It provides proof of principle for a semi-automated approach to utilize big data in epidemiological studies of healthcare-associated infections. Trials registration The study was registered at clinicaltrials.gov under NCT03353532 (11/2017).

Published
2023
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33. Plants under stress by parasitic plants

Author

Max Körner, Markus Albert, and Volker Hegenauer

Subjects
Crops, Agricultural, 0106 biological sciences, 0301 basic medicine, Resistance (ecology), Genetic resistance, fungi, food and beverages, Biomass, Plant Science, Biology, 01 natural sciences, Fight-or-flight response, Crop, 03 medical and health sciences, 030104 developmental biology, Nutrient, Agronomy, Gene Expression Regulation, Plant, Stress, Physiological, Host plants, Plant tolerance to herbivory, Plant Diseases, 010606 plant biology & botany
Abstract

In addition to other biotic stresses, parasitic plants pose an additional threat to plants and cause crop losses, worldwide. Plant parasites directly connect to the vasculature of host plants thereby stealing water, nutrients, and carbohydrates consequently leading to tremendously reduced biomass and losses in seed yields of the infected host plants. Initial steps to understand the molecular resistance mechanisms and the successes in ancient and recent breeding efforts will provide fundamental knowledge to further generate crop plants that will resist attacks by plant parasites.

Published
2017

34. Quinones shuffling the CARDs

Author

Markus Albert, Peter Slaby, and Max Körner

Subjects
0106 biological sciences, 0301 basic medicine, MAPK/ERK pathway, Shuffling, Chemistry, fungi, Quinones, food and beverages, Plant Science, Polymerase Chain Reaction, 01 natural sciences, MAPK activation, 03 medical and health sciences, 030104 developmental biology, Biochemistry, Leucine, Gene expression, Calcium flux, Benzoquinones, 010606 plant biology & botany
Abstract

Quinones are small secondary metabolites synthesized by a broad range of organisms. Perception of these aromatic molecules in plants involves membrane-bound LRR-RLKs to induce downstream cellular responses in plants such as calcium fluxes, specific gene expression and MAPK activation.

Published
2020

35. Perception of Agrobacterium tumefaciens flagellin by FLS2

Author

Ursula, Fürst, Yi, Zeng, Markus, Albert, Anna Kristina, Witte, Judith, Fliegmann, and Georg, Felix

Subjects
Agrobacterium tumefaciens, Plant Tumors, Vitis, Protein Kinases, Flagellin, Plant Proteins
Abstract

Bacterial flagella are perceived by the innate immune systems of plants

Published
2019

37. The dynamics of root cap sloughing in Arabidopsis is regulated by peptide signalling

Author

Manfred Claassen, Georg Felix, Melinka A. Butenko, Reidunn B. Aalen, Takashi Ishida, Chun-Lin Shi, Daniel von Wangenheim, Shinichiro Sawa, Markus Albert, Vilde Olsson, Andreas Kopf, Ivan Kulik, Ullrich Herrmann, Mari Wildhagen, Jiri Friml, and Mari Kristine Anker

Subjects
0106 biological sciences, 0301 basic medicine, Cell division, Meristem, Arabidopsis, Plant Science, Protein Serine-Threonine Kinases, Protein Sorting Signals, 01 natural sciences, Plant Roots, 03 medical and health sciences, Cell Wall, Homeostasis, Root cap, biology, Chemistry, Arabidopsis Proteins, Gene Expression Profiling, Lateral root, Sloughing, biology.organism_classification, Cell biology, 030104 developmental biology, Stem cell division, Intercellular Signaling Peptides and Proteins, Stem cell, Cell Division, 010606 plant biology & botany, Signal Transduction
Abstract

The root cap protects the stem cell niche of angiosperm roots from damage. In Arabidopsis, lateral root cap (LRC) cells covering the meristematic zone are regularly lost through programmed cell death, while the outermost layer of the root cap covering the tip is repeatedly sloughed. Efficient coordination with stem cells producing new layers is needed to maintain a constant size of the cap. We present a signalling pair, the peptide IDA-LIKE1 (IDL1) and its receptor HAESA-LIKE2 (HSL2), mediating such communication. Live imaging over several days characterized this process from initial fractures in LRC cell files to full separation of a layer. Enhanced expression of IDL1 in the separating root cap layers resulted in increased frequency of sloughing, balanced with generation of new layers in a HSL2-dependent manner. Transcriptome analyses linked IDL1-HSL2 signalling to the transcription factors BEARSKIN1/2 and genes associated with programmed cell death. Mutations in either IDL1 or HSL2 slowed down cell division, maturation and separation. Thus, IDL1-HSL2 signalling potentiates dynamic regulation of the homeostatic balance between stem cell division and sloughing activity.

Published
2018

38. Abstracts from the 4th World Congress of the International Dermoscopy Society, April 16-18, 2015, Vienna, Austria

Author

Michael A. Marchetti, Alexandros Stratigos, Claudia Jaeger, Nanja van Geel, Erika Varga, Rachel M Bowden, Nebojsa Pesic, Lauren A. Penn, Francesca Farnetani, Irena Walecka, Otto S. Wolfbeis, Anna Pogorzelska-Antkowiak, Małgorzata Zadurska, Miriam A. Jesús Silva, Mari Grönroos, Fabrizio Ayala, Claudia Sprincenatu, Ausilia Maria Manganoni, Jhonatan Rafael S. Pinheiro, Vincent Descamps, Era C. Murzaku, Josephine Rau, Christian Landi, Josep Malvehy, Othon Papadopoulos, Renato Talamini, Savitha L. Beergouder, Adrian Ballano Ruiz, Karina Scandura, Flavia Persechino, Yunxian Tian, Mark Berneburg, Iara Drakensjö, Luis Javier Del pozo, Elizabeth Lazaridou, Marwah A. Saleh, Wei Zhang, Dalal Mosaad, Aida Carolina Medina, Alka Lalji, Robabeh Abedini, FZ Debagh, Ligia Brzezinska-Wcislo, Nurşah Doğan, Naglaa Ahmed, Tamerlan Shaipov, Ritta Khoury, Lidija Kandolf-Sekulovic, Aldo Bono, Luis Angel Vera, Naotomo Kambe, Jaka Rados, Sergio Talarico, Milvia Maria S. E. S. Enokihara, Iris Zalaudek, Malgorzata Maj, Francesca Specchio, Paloma Arribas, Nazan Emiroglu, Andreea Ioana Popescu, Irina Sergeeva, Virginia Chitu, Michael Kirschbaum, Sergio Yamada, Niken Wulandari, Rotaru Maria, Lore Pil, Lieve Brochez, Anthony Azzi, Vasiliy Y. Sergeev, Raimonds Karls, Zeynep Topkarci, Tanja Planinsek Rucigaj, Osvania Maris, Graham J. Mann, Timótio Dorn, Lubomir Drlik, Pilar Iranzo, Sara Minghetti, Michael Noe, Ahmet R Akar, Jesus Cuevas Santos, Laura Raducu, Salim Ysmail-Dahlouk, Laura Mazzoni, Sidharth Sonthalia, Neşe Çallı Demirkan, Yaei Togawa, Branislava Gajic, Ayelet Rishpon, Chih-Hsun Yang, Barbara Boone, José Luis López-Estebaranz, Markus Albert, George Evangelou, André L.M. Oliveira, Ioana Gencia, Nada Vuckovic, Rosa Perelló, Ana Maria Draganita, Michel Colomb, Ayse Cefle, Hongguang Lu, Annarosa Virgili, Hayriye Saricaoglu, Esther A.W. Wolberink, Michael Russu, Elisabeth Arnoult-Coudoux, Caroline Nicaise-Bergère, Aleksandra M Ignjatović, Necmettin Özdemir, Kristīne Zabludovska, Cemal Bilaç, Jose Luis Lopez Estebaranz, Marie-Christine Lami, Harold S. Rabinovitz, Izabel Bota, Damien Grivet, Dimitrije Brasanac, Andrei Jalba, Joep Hoevenaars, Sofie De Schepper, Deniz Duman, Vladimir Vasku, Anna Belloni Fortina, Rosa Cristina Coppola, Marion Chavez-Bourgeois, Hoon-Soo Kim, Zamira Barragan, Julia Welzel, Thomas Ruzicka, Patricia V. Cristodor, Pierfrancesco Zampieri, Michael Lanthaler, Marc Haspeslagh, Jürgen Christian Becker, Gamze Erfan, Tanja Maier, Hui Mei Cheng, Mauro Enokihara, Ana Arance, Emel Dikicioglu Cetin, Pranaya A. Bagde, Mona M. Elfangary, Stefano Cavicchini, Alicia Barreiro, Odivânia Krüger, Mariana Petaccia Macedo, Itziar Erana Tomas, Elimar Elias Gomes, Monika Vrablova, Marcio Lorencini, Javier Alcántara González, Giuseppe Micali, Kerstin Kellermann, Mauricio Mendonca do Nascimento, Elisabeth Mt Wurm, Elena Sánchez-Largo Uceda, Yury Sergeev, Céleste Lebbé, Manfred Fiebiger, Gisele Gargantini Rezze, Antonio Graziano, Ana Pampín, Márcia Ferreira Candido, Martine Bagot, Jan Lapins, Nahide Onsun, Daniela Göppner, Katie Lee, Josef Schröder, Gisele G Rezze, Reyes Gamo, Mauricio Soto-Gamboa, Giovanni Pellacani, Maria Luiza P. Freitas, Mizuki Sawada, Hyun-Chang Ko, Ramon M Pujol Vallverdú, Jin gyoon Park, Peter Weber, Alberto Mota, Theofanis Spiliopoulos, Renata B. Marques, Daiji Furusho, Barbora Divisova, Pascale Guitera, Johan Heilborn, Alexandr Fedoseev, Athanasios Kyrgidis, Zakia Douhi, Mariame Meziane, Florent Grange, Alister Lilleyman, Juliana C. Marques-Da-Costa, Mitsuyasu Nakajima, Camilla Reggiani, Marina Meneses, Anna Sokolova, Zoe Apalla, Leo Čabrijan, Tim Lee, Piergiacomo Calzavara-Pinton, Tomas Fikrle, Georgios Chaidemenos, Braun Ralph, Aikaterini Patsatsi, Ekin Şavk, Marcela Pecora Cohen, Ioannis Efstratiou, Gurol Acikgoz, Pietro Quaglino, Nati Angelica, Luc Thomas, Edileia Bagatin, Kedima C. Nassif, Dimitrios Sotiriadis, Regina Fink-Puches, Anna Maria Wozniak, Salvador González, Agnieszka Buszko, Fezal Ozdemir, Banu Yaman, Vishnu Moodalgiri, Anne Grange, Robert J Meier, Davorin Loncaric, Fatmagül Keleş, Renato Marchiori Bakos, Sergio Chimenti, Sebastian Podlipnik, Pınar Incel Uysal, Devinder M Thappa, Nida Kaçar, Emel Bulbul Baskan, Erna Snellman, Pietro Rubegni, J. Kreusch, Hae Jin Pak, Danijela Dobrosavljevic Vukojevic, Bengü Nisa Akay, Holger A. Haenssle, Horacio Cabo, Anna Rammlmair, Fred Godtliebsen, Chiara Ferrari, Hiroshi Sakai, Christina Kemanetzi, Åsa Ingvar, Jitka Suchmannova, Zlata Janjic, Samira Zobiri, Haishan Zeng, Emine Böyük, Antonello Felli, Je-Ho Mun, Pablo Fernández Peñas, Ercan Caliskan, Satish S. Udare, Borna Pavičić, Max Hundeiker, Cristel Ruini, A. Hakan Cermik, Ülker Gül, Auro ra Parodi, Timothy P. Wu, Bernardo Gontijo, Ivan Klyuzhin, Gabriela Turcu, Sylvia Aidé Martínez-Cabriales, Francisco Alcántara Nicolás, Inge A. Krisanti, Sandra Cecilia García-García, Meriem Benfodda, Nika Madjlessi, Paraskevi Karagianni, Gizem Yağcıoğlu, Didem Dizman, Danielle I. Shitara, Nilda Eliana Gomez-Bernal, Mirna Šitum, Natalia Ilina, Job Van Der Heijden, Małgorzata Kwiatkowska, Bota Izabel, Ismini Vassilaki, Irene Potouridou, Jorge Luis Rosado, Lukas Prantl, María-José Bañuls, Fernando N. Barbosa, Seitaro Nakagawa, Jana Dornheim, Hitoshi Iyatomi, Rifat Saitburkhanov, Çiğdem Çağlayan, Natalie Ong, Stefano Gardini, Temeida Alendar, Zrinka Rendić-Miočević, Ryuhei Okuyama, Wafae Bono, Olga Warszawik-Hendzel, Danica Tiodorovic-Zivkovic, Alise Balcere, Ramazan Kahveci, Sebastian Gehmert, Herbert M. Kirchesch, Fernando Javier Pinedo, Raul Niin, Dan Savastru, Andreas Blum, Valeria Coco, Alexander C. Katoulis, Yosuke Yamamoto, Mumtaz Jabeen, Louise De Brot Andrade, Lidia Rudnicka, Pierre Wolkenstein, Fatma Pelin Cengiz, Woo-il Kim, Rainer Hofmann-Wellenhof, Tine Vestergaard, Maria Valeria B. Pinheiro, Ana Filipa Pedrosa, Caroline M. Takigami, Nilgün Bilen, Feroze Kaliyadan, Lotte Themstrup, Awatef Kelati, Katrien Vossaert, Burak Sezen, Natalia Jaimes, Olga Zhukova, Peter Jung, Nidhi Singh, Uxua Floristan, Ivette Alarcon, Michel Baccard, Flávia V. Bittencourt, Nicolas Dupin, Neslihan Şendur, Flavia Boff, Lydia Garcia Gaba, João Pedreira Duprat Neto, Caius Solovan, Byung Soo Kim, Anamaria Jović, Toshitsugu Sato, Antoni Bennassar, Ilkka Pölönen, Svetlana Rogozarski, Agnieszka Kardynał, Harald P.M. Gollnick, Anastasia Trigoni, Harvey Lui, Hiroshi Koga, Dai Ogata, Zeynep N. Saraçoğlu, Nilton B Rodrigues, Ketty Peris, Vanessa da Silva, Akira Hamada, Monica Corazza, Azmat A. Khan, Cengizhan Erdem, Victor Desmond Mandel, Sabina Zurac, Laura Elena Barbosa-Moreno, Filomena Azevedo, Matsue Hiroyuki, Philippe Saiag, Kara Shah, Stephen W. Dusza, Margaret Song, Francesca Giusti, Lidija Zolotarevski, Romain Vie, Rutao Cui, Aylin Okçu Heper, Kerstin Wöltje, Kyoko Tonomura, Charlotte H. Vuong, Moira Ragazzi, Marta Andreu Barasoain, Stephan Schreml, Branka Marinović, Mona R E Abdel Halim, Selimir Kovacevic, Noriaki Kamada, Adriana Garcia-Herrera, Ayse S. Filiz, Helena Collgros, Joan A. Puig-Butille, Ulvi Loite, Meng-Tsan Tsai, Nele Degryse, Philipp Tschandl, Seiichiro Wakabayashi, Korina Tzima, Kari Nielsen, Edith Arzberger, Alain Archimbaud, Makiko Miyamoto, Steffen Emmert, Katharine Hanlon, Stefano Astorino, Andre Sobiecki, Trevino A Pakasi, Giovanni Ghigliotti, Arzu Karataş Toğral, Sara Bassoli, Mahdi Akhbardeh, Martina Ulrich, Mirna Bradamante, Gökhan Uslu, Ross Flewell-Smith, Mauro Alaibac, Bettina Kranzelbinder, Steven Gazal, Nina Malishevskaya, Mikhail Ustinov, Noora Neittaanmäki-Perttu, Olga Simionescu, Saime Irkoren, Mahsa Ansari, Mustafa Turhan Sahin, Priit Kruus, Jana Janovska, Vesna Gajanin, Giovanni Ponti, Alon Scope, Ozkan Kanat, Cesare Massone, Thomas Schopf, Karolina Hadasik, Magnus Karlsson, Ayça Tan, Ignacio Gómez Martín, Armand Bensussan, Dilara Tüysüz, Saleh M. H. El Shiemy, Ine De Wispelaere, Malou Peppelman, Kenan Aydogan, Christian Teutsch, Ryszard A. Antkowiak, Nathalie De Carvahlo, Fatma Shabaka, Matthias Karasek, Christina Fotiadou, Wael M. Saudi, Matthias Weber, Maria Saletta Palumbo, Elisa Benati, Hana Helppikangas, Mariana Grigore, Leonard Witkamp, Rajiv Kumar, Stella Atkins, Eugene Y. Neretin, Dirk Berndt, Piet E.J van Erp, Alessandro Testori, David Duffy, Steluta Ratiu, Tara Bronsnick, Christoph Rinner, Soo-Han Woo, Federica Ferrari, Gabriela Garbin, Eduardo Nagore, Claus Duschl, Caterina Longo, Daniel Alcala-Perez, Helmut Beltraminelli, Sarah Hedtrich, David C McLean, Bojana Spasic, Martin Laimer, Malgorzata Pawlowska-Kisiel, Bohdan Lytvynenko, Heba I. Nagy Abd El-Gawad, Jean-Luc Perrot, Daška Štulhofer Buzina, Dimitrios Rigopoulos, Christian Hallermann, Jeffrey Keir, Adriana Martín Fuentes, Franz Trautinger, Walter L. G. Machado, Emese Gellén, Tatjana Ros, Gabriella Emri, Pinar Y. Basak, Nilay Duman, Reinhart Speeckaert, Peter Komericki, Maciel Zortea, Raphaela Kaestle, Lucía Pérez Carmona, Masaru Tanaka, Ionela Manole, Calin Giurcaneanu, Cristina Carrera, Jianhua Zhao, Marsha Mitchum, Isil Kilinc Karaarslan, Michael Muntifering, Alice Casari, Nicole Basset-Seguin, Seok-Kweon Yun, Vesna Mikulic, Albert Brugués, Kim-Dung Nguyen, Reshmi Madankumar, Joo-Ik Kim, Anna Skrok, Nicolle Mazzotti, Aomar Ammar-Khodja, Alina Avram, Laxmisha Chandrashekar, Dilek Biyik Ozkaya, Refika F. Artuz, Joanna Czuwara-Ladykowska, Hana Szakos, Dejan M Nikolic, Katarzyna Żórawicz, Georg Duftschmid, Natalia Pikelgaupt, Jorge Ocampo-Candiani, Irdina Drljevic, Canten Tataroglu, Esther Jiménez Blázquez, Philippe Gain, Simonetta Piana, Yunus Bulgu, Lars Dornheim, Bruno Labeille, Helmut Schaider, Nitul Khiroya, Sofia Theotokoglou, Christian Morsczeck, Kalliopi Armyra, Serap Öztürkcan, Shricharit h Shetty, Ozlem Su, Susana Puig, Lina Ivert, Katia Ongenae, Hirotsugu Shirabe, Ardalan Benam, Gustav Christensen, Veronika Paťavová, Adria Gual, Laura Pavoni, Mihaita Viorica Mihalceanu, Slobodan Jesic, Abdurrahman Bugra Cengiz, Jerome Becquart, Yasutomo Mikoshiba, Mattia Carbotti, Marcelo O. Samolé, Margherita Raucci, Sven Lanssens, Maria João M. Vasconcelos, Valeriy Semisazhenov, Fabio Facchetti, Monia Maccaferri, Vincenzo Panasiti, Camila M. Carvalho, Elena Tolomio, Ercan Arca, Celia Badenas, Sonia Segura Tigell, Francesco Lacarrubba, Ruzica Jurakic Toncic, Uday Khopkar, Uwe Seidl, Clóvis Antônio Lopes Pinto, Alice Marneffe, Zhenguo Wu, Josefin Lysell, Malgorzata Olszewska, Marta Ruano Del Salado, Alina Gogulescu, Tarl W. Prow, Christine Fink, Jean-Marie Tan, Milana Ivkov Simic, Mahshid S. Ansari, Stamatina Geleki, Sondang P. Sirait, Flavia Baderca, Marcella N. Silva, Andra Pehoiu, Joost Koehoorn, Ajay Goyal, Maria Dirlei Ferreira de Souza Begnami, Hui-bin Lu, Hoda A. Moneib, Maria Antonietta Pizzichetta, Scott Menzies, Gulsel Anil Bahali, Vesna Tlaker Zunter, Elfrida Carstea, Ines Chevolet, Septimiu Enache, Aysun Şikar Aktürk, Clara Kirchner, Greg Canning, Dina M. Shahin, Incilay Kalay Tugrul, Kristina Opletalova, Lars Hofmann, Mario Santinami, Anna Elisa Verzì, Asunción Vicente, Nathalia Delcourt, null Mernissi, Duru Tabanlıoglu Onan, Dorothy Polydorou, Irma Korom, Sara Moreno Fernández, Salim Gallouj, Annamari Ranki, Riina Hallik, Saduman Balaban Adim, Erietta Christofidou, Gustavo D. C. Dieamant, Vincenzo De Giorgi, Gregor B.E. Jemec, Kajsa Møllersen, Monisha lalji, Georgiana Simona Mohor, Hans-Jürgen Schulz, Justin R Sharpe, Karinna S. Machado, Efterpi Demiri, Mohammed I. AlJasser, Jelena Stojkovic-Filipovic, Harald Kittler, José M. A. Lopes, Adriana Diaconeasa, Patricia Serrano, Alfonso D’Orazio, Luca Mazzucchelli, Riccardo Bono, Oliver Felthaus, Juan Garcias-Ladaria, Zeljko Mijuskovic, Zsuzsanna Bago-Horvath, Alin Laurentiu Tatu, Christine Prodinger, Roland Blum, Demetrios Ioannides, Nadem Soufir, Diego Serraino, Ahmed M. Sadek, Leticia Calzado Villareal, Elliot Coates, Mariana Costache, Machuel Bruno, Bengu Gerceker Turk, Liliana Gabriela Popa, Han-Uk Kim, Lisa Hoogedoorn, Efstratios Vakirlis, Monika Kotrlá, Gabriel Salerni, Ela Comert, Salvatore Zanframundo, Zsuzsanna Lengyel, Francisco Jose Deleon, Maryam Sadeghi Naeeni, Georgios Kontochristopoulos, Ana Carolina Cherobin, Michiyo Matsumoto-Nakano, Gabriela Fortes Escobar, Maria Concetta Fargnoli, Ayse Oktem, Petra Fedorcova, Slavomir Urbancek, Hyunju Jin, Frédéric Cambazard, Tracey Newlove, Nataliya Sirmays, Cliff Rosendahl, Tamara Micantonio, Shirin Bajaj, Masa Gorsic, Ana Carolina L. Viana, Valentin Popa, Hubert Pehamberger, Anna Maria Carrozzo, Valentina Girgenti, Phil McClenahan, Beata Bergler-Czop, Alex Llambrich, Özgür Bakar, David Polsky, Krishnakant B. Pandya, Andrea Maurichi, Isabelle Hoorens, Paola Sorgi, Marianne Niin, Serena Magi, Malathi Munisamy, Zlatko Marušić, Cristina Mangas, Hakan Yesil, Miriam Potrony, Safaa Y. Negm, Maria T. Corradin, Stefania Seidenari, Işıl Bulur, Evelin Csernus, Gemma Tell-Marti, Alix Thomas, Juliana Casagrande Tavoloni Braga, Marco Manfredini, Karime M. Hassun, Celia Levy-Silbon, Lali Mekokishvili, Cem Yildirim, Hanna Eriksson, John H. Pyne, Angel Pizarro, Hakim Hammadi, Alessandro Borghi, Mariana A. Cordeiro, Fatima Zohra, A. Tülin Güleç, Ivan Ruiz Victoria, Joanna N. Łudzik, Radwa Magdy, Hisashi Uhara, Grażyna Kamińska-Winciorek, Llúcia Alòs, Pegah Kharazmi, Keisuke Suehiro, Lucian Russu, Zorica Đorđević Brlek, Sandrine Massart-Manil Massart-Manil, Moon-Bum Kim, Noha E. Hashem, Domenico Piccolo, Francesca Cicero, Jan Szymszal, Verena Ahlgrimm-Siess, Marian Gonzalez Inchaurraga, Ignazio Stanganelli, Danica Tiodorovic Zivkovic, Bugce Topukcu, Katharina Jaeger, Michael J. Inskip, Sara M. Mohy, Assya Djeridane, Véronique Del Marmol, Isil Kilinc, Nehal Yossif, Geon-Wook Kim, Oleksandr Litus, Ivana Ilić, Richard A Sturm, Mustafa Tunca, Anndressa da Matta, Elisabeth Jecel, Danijela Ćurković, Giuseppe Argenziano, Lynlee L. Lin, Elena Sotiriou, Mikela Petkovic, Suzana Kamberova, Sara Ibañes del Agua, Alan Cameron, Judit Oláh, Marc Nahuys, Leila Jeskanen, Zrinjka Paštar, Anna Wojas-Pelc, Ingela Ahnlide, Romana Čeović, Geoffrey Cains, Gilles Thuret, Mary Thomas, Marios Fragoulis, Drahomira Jarosikova, Manfred Beleut, Ferda Artüz, Brigitte Lavole, Francesco Todisco Grande, Carine Dal Pizzol, Erika Richtig, Nathalie Teixeira De Carvalho, Hans Peter Soyer, Amer M Alanazi, Vesna Sossi, Manal Bosseila, Monica Sulitan, Biancamaria Scoppio, Zrinka Bukvić Mokos, Marie-Jeanne P. Gerritsen, Mariano Suppa, Danielle Giambrone, Christoph Sinz, Jernej Kukovic, Martina Bosic, Adriana Rakowska, Eleni Mitsiou, Kely Hernandez, Ashfaq A. Marghoob, Daniel Boda, Alessandro Di Stefani, Luciana Trane, Leo Raudonikis, Akane Minagawa, Itaru Dekio, Athanassios Kyrgidis, Magdalena Wawrzynkiewicz, Katharina T Weiß, Chie Kamada, Lamberto Zara, Cristian Navarrete-Dechent, Serkan Yazici, Frédéric Renard, Leonie Mathemeier, Nissrine Amraoui, Mariana Fabris, Mariola Wyględowska-Kania, Nikolay Potekaev, Elisa Cinotti, Sedef Şahin, Peter van de Kerkhof, Silvana Ciardo, Sara Izzi, Paolo Piemonte, William V. Stoecker, Giampiero Mazzocchetti, Pasquale Frascione, Louise Lovatto, Ayşegül Yalçınkaya Iyidal, Jennifer A. Stein, Selçuk Yüksel, Daniela Ledić Drvar, Stine F. Pedersen, Dimitrios Sgouros, Meriem Bounouar, Balachandra S Ankad, Rahul Bute, Julia Brockley, Paula Aguilera-Otalvaro, Sumiko Ishizaki, Daniela Kulichova, Ilias Papadimitriou, Yeser Genc, Tanja Batinac, Jadran Bandic, Jean-Michel Lagarde, Göksun Karaman, Philipp Babilas, Mari Salmivuori, Lieven Annemans, Lennart K Blomqvist, Karel Pizinger, Duncan Lambie, Alexander Michael Witkowski, Meltem Uslu, Irena Savo, Martin Gosau, Raphaela Kastle, Olli Saksela, Pedro Zaballos, Esther De Eusebio Murillo, Hu Hui-Han, Sanda Mirela Cherciu, Claudia Artenie, Elvira Moscarella, Richard Johns, Ozlem Erdem, Valérie Vuong, Basma Birqdar, Jela Tomkova, Kasturee Jagirdar, Vassilios Lambropoulos, Moshira S. Bahrawy, Seong-Jin Kim, Su Chii Kong, Helen Schmid, Tetsuya Tsuchida, Michele Tonellato, Laura Berbegal, Lumír Pock, Iustin Hancu, Babar K Rao, Juliette Jegou, Lajos Kemény, Teresa Deinlein, Usha N. Khemani, Davive Guardoli, Juliana Arêas de Souza Lima Beltrame Ferreira, Tatiana Cristina Moraes Pinto Blumetti, Adhimukti T. Sampurna, Alexandru Telea, Ana Maria Forsea, Gionata Marazza, Lidija Kandolf Sekulovic, Marta Kurzeja, Marija Buljan, Fatima Zohra Mernissi, Alba Maiques-Diaz, Roger González, Dimitrios Kalabalikis, María Gabriela Vallone, Vanessa P. Martins Da Silva, Gemma Flores-Pons, Giuseppe Bertollo, Rolland Gyulai, Giuliana Crisman, Secil Saral, Simon Nicholson, Aimilios Lallas, Willeke Blokx, Marc A. L. M. Boone, and Oana Sindea

Subjects
Oncology, business.industry, RL1-803, Genetics, Medicine, Library science, Environmental ethics, Dermatology, business, Molecular Biology
Published
2015

39. Refusal of Adjuvant Therapies and Its Impact on Local Control and Survival in Patients with Bone and Soft Tissue Sarcomas of the Extremities and Trunk

Author

Franziska Mentrup, Alexander Klein, Lars Hartwin Lindner, Silke Nachbichler, Boris Michael Holzapfel, Markus Albertsmeier, Thomas Knösel, and Hans Roland Dürr

Subjects
sarcoma, surgery, radiotherapy, chemotherapy, decision-making, treatment refusal, Neoplasms. Tumors. Oncology. Including cancer and carcinogens, RC254-282
Abstract

Background: In soft tissue or bone sarcomas, multimodal therapeutic concepts represent the standard of care. Some patients reject the therapeutic recommendations due to several reasons. The aim of this study was to assess the impact of that rejection on both prognosis and local recurrence. Methods: Between 2012 and 2019, a total of 828 sarcoma patients were surgically treated. Chemotherapy was scheduled as a neoadjuvant, and adjuvant multi-agent therapy was performed following recommendations from an interdisciplinary tumor board. Radiotherapy, if deemed appropriate, was administered either in a neoadjuvant or an adjuvant manner. The recommended type of therapy, patient compliance, and the reasons for refusal were documented. Follow-ups included local recurrences, diagnosis of metastatic disease, and patient mortality. Results: Radiotherapy was recommended in 407 (49%) patients. A total of 40 (10%) individuals did not receive radiation. A reduction in overall survival and local recurrence-free survival was evident in those patients who declined radiotherapy. Chemotherapy was advised for 334 (40%) patients, 250 (75%) of whom did receive all recommended cycles. A total of 25 (7%) individuals did receive a partial course while 59 (18%) did not receive any recommended chemotherapy. Overall survival and local recurrence-free survival were reduced in patients refusing chemotherapy. Overall survival was worst for the group of patients who received no chemotherapy due to medical reasons. Refusing chemotherapy for non-medical reasons was seen in 8.8% of patients, and refusal of radiotherapy for non-medical reasons was seen in 4.7% of patients. Conclusions: Divergence from the advised treatment modalities significantly impacted overall survival and local recurrence-free survival across both treatment modalities. There is an imperative need for enhanced physician-patient communication. Reducing treatment times, as achieved with hypofractionated radiotherapy and with therapy in a high-volume sarcoma center, might also have a positive effect on complying with the treatment recommendations.

Published
2024
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40. Quantitative Detection of Oxidative Burst upon Activation of Plant Receptor Kinases

Author

Markus, Albert and Ursula, Fürst

Subjects
Plant Leaves, Antigens, Bacterial, Luminescence, Hydroxyl Radical, Superoxides, Luminescent Measurements, Tobacco, Arabidopsis, Luminol, Hydrogen Peroxide, Hydrogen-Ion Concentration, Respiratory Burst
Abstract

The oxidative burst or the production of reactive oxygen species (ROS) is a typical cellular response of both plants and animals to diverse abiotic and biotic stresses. Mainly, the (re-)active oxygen species include the superoxide anion (O

Published
2017

41. Chemiluminescence-Based Detection of Peptide Activity and Peptide-Receptor Binding in Plants

Author

Mari, Wildhagen, Markus, Albert, and Melinka A, Butenko

Subjects
Receptors, Peptide, Luminescent Measurements, Plants, Peptides, Reactive Oxygen Species
Abstract

In living organisms, physical interaction of ligand molecules with their cognate receptors is an indispensable requirement for the initiation of cellular signaling pathways. To technically prove the biochemical interaction of ligands with their corresponding receptor, a biologically active but labeled peptide is required. Easily scorable bioassays, such as the production of reactive oxygen species, can be used to quantify the activity of a peptide. By using chemiluminescent probes, such as acridinium esters, as conjugates to label peptide ligands of interest, quantitative measurements of ligand-receptor binding can be performed in standard luminometers. Here we describe how this binding approach can be used to reveal peptide ligand-receptor binding in plant material.

Published
2017

43. Quantitative Detection of Oxidative Burst upon Activation of Plant Receptor Kinases

Author

Markus Albert and Ursula Fürst

Subjects
0106 biological sciences, 0301 basic medicine, chemistry.chemical_classification, Reactive oxygen species, Superoxide, fungi, food and beverages, Biotic stress, 01 natural sciences, Luminol, Respiratory burst, law.invention, 03 medical and health sciences, chemistry.chemical_compound, 030104 developmental biology, chemistry, Biochemistry, law, Hydroxyl radical, Hydrogen peroxide, 010606 plant biology & botany, Chemiluminescence
Abstract

The oxidative burst or the production of reactive oxygen species (ROS) is a typical cellular response of both plants and animals to diverse abiotic and biotic stresses. Mainly, the (re-)active oxygen species include the superoxide anion (O2-), hydrogen peroxide (H2O2), and the hydroxyl radical (OH•). Here, we outline the detection of extracellularly produced ROS in plant leaf pieces using a chemiluminescence-based bioassay with the luminol L-012 as a substrate being oxidized in the presence of ROS. Since this type of assay is in use in many laboratories, e.g., as a readout for activation of plant receptor kinases, we include a discussion on the interpretation of results and points addressing problems with the buffers at suboptimal pH values that negatively influence the chemiluminescence production.

Published
2017

47. Chemiluminescence-Based Detection of Peptide Activity and Peptide-Receptor Binding in Plants

Author

Markus Albert, Mari Wildhagen, and Melinka A. Butenko

Subjects
0301 basic medicine, chemistry.chemical_classification, Reactive oxygen species, Cell signaling, Ligand, fungi, food and beverages, Peptide, Biological activity, law.invention, 03 medical and health sciences, 030104 developmental biology, chemistry, Biochemistry, law, Bioassay, Receptor, Chemiluminescence
Abstract

In living organisms, physical interaction of ligand molecules with their cognate receptors is an indispensable requirement for the initiation of cellular signaling pathways. To technically prove the biochemical interaction of ligands with their corresponding receptor, a biologically active but labeled peptide is required. Easily scorable bioassays, such as the production of reactive oxygen species, can be used to quantify the activity of a peptide. By using chemiluminescent probes, such as acridinium esters, as conjugates to label peptide ligands of interest, quantitative measurements of ligand-receptor binding can be performed in standard luminometers. Here we describe how this binding approach can be used to reveal peptide ligand-receptor binding in plant material.

Published
2017

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