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4 results on '"Arindam Ghatak"'

1. Root exudation of contrasting drought-stressed pearl millet genotypes conveys varying biological nitrification inhibition (BNI) activity

Author

Arindam Ghatak, Martin Brenner, Wolfram Weckwerth, Guntur Venkata Subbarao, Palak Chaturvedi, Gert Bachmann, Prasad Bajaj, Doris Engelmeier, Lena Fragner, Florian Schindler, and Rajeev K. Varshney

Subjects
0106 biological sciences, 0301 basic medicine, Root growth, Drought stress, Soil Science, Primary metabolites, Biology, Root exudates, 01 natural sciences, Microbiology, LC–MS, Pearl millet, 03 medical and health sciences, Genotype, GC–MS, Rhizosphere, Secondary metabolites, fungi, Potential effect, food and beverages, 030104 developmental biology, Agronomy, Microbial population biology, Composition (visual arts), Nitrification, Agronomy and Crop Science, 010606 plant biology & botany
Abstract

Roots secrete a vast array of low molecular weight compounds into the soil broadly referred to as root exudates. It is a key mechanism by which plants and soil microbes interact in the rhizosphere. The effect of drought stress on the exudation process and composition is rarely studied, especially in cereal crops. This study focuses on comparative metabolic profiling of the exudates from sensitive and tolerant genotypes of pearl millet after a period of drought stress. We employed a combined platform of gas and liquid chromatography coupled to mass spectrometry to cover both primary and secondary metabolites. The results obtained demonstrate that both genotype and drought stress have a significant impact on the concentration and composition of root exudates. The complexity and function of these differential root exudates are discussed. To reveal the potential effect of root exudates on the soil microbial community after a period of drought stress, we also tested for biological nitrification inhibition (BNI) activity. The analysis revealed a genotype-dependent enhancement of BNI activity after a defined period of drought stress. In parallel, we observed a genotype-specific relation of elongated root growth and root exudation under drought stress. These data suggest that the drought stress-dependent change in root exudation can manipulate the microbial soil communities to adapt and survive under harsh conditions.The online version contains supplementary material available at 10.1007/s00374-021-01578-w.

Published
2021

2. Pearl millet genome sequence provides a resource to improve agronomic traits in arid environments

Author

Jun Wang, Katrien M. Devos, Jianping Wang, Andrew H. Paterson, Cédric Mariac, Xinming Liang, Wenbin Chen, Dadakhalandar Doddamani, Sunil Gupta, Om Parkash Yadav, Rattan Yadav, Eric Lyons, Rajeev K. Varshney, Arindam Ghatak, Wolfram Weckwerth, C. Tom Hash, He Zhang, Mame Codou Gueye, Dev Paudel, Abhishek Rathore, Palak Chaturvedi, R. S. Mahala, Christian Dupuy, Xun Xu, Jeffrey L. Bennetzen, Guangyi Fan, Swapan K. Datta, Yusheng Zhao, Somashekhar Punnuri, Annapurna Chitikineni, Ndjido Ardo Kane, Mohan A. V. S. K. Katta, Falalou Hamidou, Francesca Sparvoli, Jason G. Wallace, Mahendar Thudi, Edward S. Buckler, Joann A. Conner, Prasad Bajaj, Xiyin Wang, Ramanjulu Sunkar, Peggy Ozias-Akins, Marie Couderc, Bharat P. Singh, Trilochan Mohapatra, Stefania Grando, Xin Liu, Bénédicte Rhoné, Vanika Garg, K. D. Mungra, Hari D. Upadhyaya, Chengcheng Shi, Peng Qi, Philippe Cubry, Yong Jiang, Hao Wang, Karen R. Harris-Shultz, Sabarinath Subramaniam, Yves Vigouroux, Jérémy Clotault, Cécile Berthouly-Salazar, Shifeng Cheng, Jochen C. Reif, Neetin Desai, Rakesh K. Srivastava, Institut des Mondes Africains (IMAF), Université Paris 1 Panthéon-Sorbonne (UP1)-Institut de Recherche pour le Développement (IRD)-École des hautes études en sciences sociales (EHESS)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), ANR-13-BSV7-0017,AfriCrop,Etude de l'histoire évolutive des plantes domestiquées africaines(2013), Diversité, adaptation, développement des plantes (UMR DIADE), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud]), Numerical modeling and high performance computing for evolution problems in complex domains and heterogeneous media (NACHOS), Inria Sophia Antipolis - Méditerranée (CRISAM), Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire Jean Alexandre Dieudonné (JAD), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS), Institut Sénégalais de Recherches Agricoles [Dakar] (ISRA), Institut de Recherche en Horticulture et Semences (IRHS), Université d'Angers (UA)-AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Unité de Recherches Forestières Méditerranéennes (URFM), Institut National de la Recherche Agronomique (INRA), Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS), Université Paris 1 Panthéon-Sorbonne (UP1)-Institut de Recherche pour le Développement (IRD)-École des hautes études en sciences sociales (EHESS)-École pratique des hautes études (EPHE), Unité de Mécanique (UME), École Nationale Supérieure de Techniques Avancées (ENSTA Paris), State Key Laboratory of Fine Chemicals, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire Jean Alexandre Dieudonné (LJAD), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA), Université d'Angers (UA)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-INSTITUT AGRO Agrocampus Ouest, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Institut de Recherche pour le Développement (IRD [France-Sud])-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Université Nice Sophia Antipolis (... - 2019) (UNS), Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Université d'Angers (UA)-AGROCAMPUS OUEST-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), and Université Panthéon-Sorbonne (UP1)-Institut de Recherche pour le Développement (IRD)-École des hautes études en sciences sociales (EHESS)-École pratique des hautes études (EPHE)-Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
0301 basic medicine, genome sequence, [SDV]Life Sciences [q-bio], adaptation, Applied Microbiology and Biotechnology, hybridism, Conserved Sequence, 2. Zero hunger, Agriculture, Staple food, genetic diversity, Genomics, hybridations, Phenotype, diversité génétique, pennisetum glaucum, Molecular Medicine, Desert Climate, pearl millet, Genome, Plant, Biotechnology, Agricultural genetics, Pennisetum, [SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory, Drought tolerance, Biomedical Engineering, Bioengineering, Biology, Genes, Plant, milieu aride, Article, domestication, 03 medical and health sciences, Quantitative Trait, Heritable, Mil (Cenchrus americanus), Genetic variation, Plant breeding, Domestication, Millet (Cenchrus americanus), Genetic diversity, Base Sequence, Genetic Variation, Molecular Sequence Annotation, 15. Life on land, Arid, arid environment, Plant Breeding, 030104 developmental biology, Agronomy, Next-generation sequencing, Hybridization, Genetic, Genome-Wide Association Study
Abstract

Draft genome, 994 re-sequenced lines and GWAS for yield-traits provide a resource of genetics and genomics tools for pearl millet researchers and breeders. Supplementary information The online version of this article (doi:10.1038/nbt.3943) contains supplementary material, which is available to authorized users., Pearl millet [Cenchrus americanus (L.) Morrone] is a staple food for more than 90 million farmers in arid and semi-arid regions of sub-Saharan Africa, India and South Asia. We report the ∼1.79 Gb draft whole genome sequence of reference genotype Tift 23D2B1-P1-P5, which contains an estimated 38,579 genes. We highlight the substantial enrichment for wax biosynthesis genes, which may contribute to heat and drought tolerance in this crop. We resequenced and analyzed 994 pearl millet lines, enabling insights into population structure, genetic diversity and domestication. We use these resequencing data to establish marker trait associations for genomic selection, to define heterotic pools, and to predict hybrid performance. We believe that these resources should empower researchers and breeders to improve this important staple crop. Supplementary information The online version of this article (doi:10.1038/nbt.3943) contains supplementary material, which is available to authorized users.

Published
2017

3. Pollen proteomics: from stress physiology to developmental priming

Author

Wolfram Weckwerth, Arindam Ghatak, and Palak Chaturvedi

Subjects
Proteomics, 0301 basic medicine, Hot Temperature, Pollen development, Stamen, Review, Plant Science, Biology, medicine.disease_cause, Heat stress, Plant reproduction, Double fertilization, 03 medical and health sciences, Meiosis, Stress, Physiological, Pollen, Botany, otorhinolaryngologic diseases, medicine, Gametophyte, food and beverages, Cell Biology, Sexual reproduction, Cell biology, Developmental priming, 030104 developmental biology, Pollen tube, Defense priming, Heat-Shock Response
Abstract

Key message Pollen development and stress. Abstract In angiosperms, pollen or pollen grain (male gametophyte) is a highly reduced two- or three-cell structure which plays a decisive role in plant reproduction. Male gametophyte development takes place in anther locules where diploid sporophytic cells undergo meiotic division followed by two consecutive mitotic processes. A desiccated and metabolically quiescent form of mature pollen is released from the anther which lands on the stigma. Pollen tube growth takes place followed by double fertilization. Apart from its importance in sexual reproduction, pollen is also an interesting model system which integrates fundamental cellular processes like cell division, differentiation, fate determination, polar establishment, cell to cell recognition and communication. Recently, pollen functionality has been studied by multidisciplinary approaches which also include OMICS analyses like transcriptomics, proteomics and metabolomics. Here, we review recent advances in proteomics of pollen development and propose the process of developmental priming playing a key role to guard highly sensitive developmental processes.

Published
2016

4. Evaluation of radical scavenging potential and total phenol content in Woodfordia fruticosa from different altitudes

Author

Arindam Ghatak, Palak Chaturvedi, and Neetin Desai

Subjects
Traditional medicine, biology, Plant Science, biology.organism_classification, complex mixtures, chemistry.chemical_compound, Woodfordia fruticosa, Distilled water, chemistry, visual_art, Botany, Tannic acid, visual_art.visual_art_medium, TBARS, Bark, Methanol, Lythraceae, Agronomy and Crop Science, Scavenging, Biotechnology
Abstract

Woodfordia fruticosa Kurz is a member of family Lythraceae, commonly used in the treatment of diseases like leucorrhoea, dysentery, leprosy and menorrhagia. The plant material such as leaves, bark and flowers were collected from three different (200, 402 and 600 m) altitudes of Khandala (M.S. India) and the extracts were prepared in solvents like methanol, ethanol and distilled water. The radical scavenging potential and total phenolic content of the extracts were evaluated. The methanol extract of bark collected from the location one (200 m) showed high radical scavenging activity (96.52 ± 0.02) than distilled water and ethanol extracts (57.80 ± 0.2 and 86.52 ± 0.03). The bark of the plant showed highest (663 ± 37.85) total phenolic content that of flowers and leaves. The methanol extracts of leaves, bark and flowers showed high tannic acid content, while TBARS assay of ethanol extract of flowers showed maximum protection (27.65). It was observed that there is no significant difference in percent scavenging activity in different plant parts collected from three different altitudes but showed difference in the solvent system used. The results obtained are in support of extensive use of Woodfordia fruticosa in traditional medicine and endorses the use of bark, while it needs further investigations on the plants growing in different geographic areas.

Published
2011

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