8 results on '"Bettina Heider"'
Search Results
2. Haplotype-based phylogenetic analysis uncovers the tetraploid progenitor of sweet potato
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M-Hossein Moeinzadeh, Dora G. Quispe-Huamanquispe, Martin Vingron, Haozhen Nie, Jun Yang, Robert L. Jarret, Jan Kreuze, Ralph Bock, Weijuan Fan, Ming Li, Zhangying Wang, Godelieve Gheysen, Bettina Heider, Hongxia Wang, and Mengxiao Yan
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Genetics ,Phylogenetic tree ,Haplotype ,Biology ,Progenitor - Abstract
The hexaploid sweet potato is one of the most important root crops worldwide. However, its genetic origins, especially that of its tetraploid progenitor, are unclear. In this study, we conceived a pipeline consisting of a genome-wide variation-based phylogeny and a novel haplotype-based phylogenetic analysis (HPA) to determine that the tetraploid accession CIP695141 of Ipomoea batatas 4x from Peru is the tetraploid progenitor of sweet potato. We detected biased gene exchanges between subgenomes. The B1 to B2 subgenome conversions were almost 3-fold higher than the B2 to B1 subgenome conversions. Our analyses revealed that the genes involved in storage root formation, sugar transport, stress resistance, and maintenance of genome stability have been selected during the speciation and domestication of sweet potato. This study sheds lights on the evolution of sweet potato and paves a way for the improvement of sweet potato.
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- 2021
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3. Metabolic diversity in sweet potato (Ipomoea batatas, Lam.) leaves and storage roots
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Genoveva Rossel, Bettina Heider, Paul D. Fraser, and Margit Drapal
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0106 biological sciences ,0301 basic medicine ,Plant Science ,Orange (colour) ,Horticulture ,Biology ,Ipomoea ,01 natural sciences ,Biochemistry ,Article ,03 medical and health sciences ,lcsh:Botany ,Genetics ,Cultivar ,Secondary metabolism ,Domestication ,Carotenoid ,lcsh:QH301-705.5 ,chemistry.chemical_classification ,Genetic diversity ,Chemotype ,digestive, oral, and skin physiology ,fungi ,food and beverages ,biology.organism_classification ,lcsh:QK1-989 ,030104 developmental biology ,chemistry ,lcsh:Biology (General) ,010606 plant biology & botany ,Biotechnology - Abstract
Sweet potato (Ipomoea batatas, Lam.) is an important root vegetable in developing countries. After its domestication in Neotropical America, human migration led to the distribution of the sweet potato plant throughout the world. Both leaf and storage root are high in compounds of nutritional value. Yet, the storage roots are of particular value due to their significant content of provitamin A (β-carotene). The breeding effort for elite sweet potato lines led to the reduction of genetic diversity and the potential to improve other traits. The focus of the present study was to assess the metabolic diversity of 27 sweet potato cultivars including landraces and improved varieties. A metabolite profiling approach was optimised for sweet potato leaf and storage root tissue and 130 metabolites identified with three different analysis platforms. The data highlighted a lack of correlation between storage root phenotype and leaf metabolism. Furthermore, the metabolic diversity of storage roots was based on the secondary metabolism, including phenylpropanoids and carotenoids. Three cultivars of three different flesh colouration (yellow, orange and purple) showed a significant difference of the primary metabolism. This data demonstrates the value of metabolite profiling to breeding programs as a means of identifying differences in phenotypes/chemotypes and characterising parental material for future pre-breeding resources., Food crops: Assessing the metabolic diversity of sweet potato Understanding the metabolic variations of different types of sweet potato could help improve their nutritional value. Sweet potato is one of the world’s major food crops but recurrent breeding of high yielding lines is reducing their genetic diversity. A study led by Paul D. Fraser, Royal Holloway University of London, UK, examined the chemical differences between 25 types of sweet potato, including orange and purple varieties. They show that there is little correlation between the chemicals found in the leaves and storage root material and that there are significant differences in metabolism between varieties that produce different pigments in their storage roots. Their findings highlight the importance of metabolite profiling for identifying those varieties that produce the highest levels of starch and health-promoting compounds such as carotenoids.
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- 2019
4. Correction to: Comparative analysis of chloroplast genomes of cultivars and wild species of sweetpotato (Ipomoea batatas [L.] Lam)
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Xiao Shizhuo, Zhang An, Dai Xibin, Pan Xu, Zhilin Zhou, Yitong Deng, Qinghe Cao, Bettina Heider, and Lukuan Zhao
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Wild species ,QH426-470 ,Biology ,Proteomics ,Ipomoea ,biology.organism_classification ,Genome ,Chloroplast ,Botany ,Genetics ,Cultivar ,DNA microarray ,TP248.13-248.65 ,Biotechnology - Published
- 2021
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5. Genetic variation and response to selection for storage root dry matter and associated traits in a population of yam bean (Pachyrhizus spp.) interspecies crosses
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Phinehas Tukamuhabwa, Robert O. M. Mwanga, Patrick Rubaihayo, Bettina Heider, Wolfgang J. Grüneberg, Jean Ndirigwe, Silver Tumwegamire, and Rolland Agaba
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0106 biological sciences ,0301 basic medicine ,education.field_of_study ,biology ,Population ,Randomized block design ,Plant Science ,Mating design ,Horticulture ,Heritability ,biology.organism_classification ,01 natural sciences ,03 medical and health sciences ,030104 developmental biology ,Pachyrhizus ,Genetic variation ,Genetics ,Dry matter ,Cultivar ,education ,Agronomy and Crop Science ,010606 plant biology & botany - Abstract
The goal of yam bean improvement in Africa is to develop superior high yielding and high dry matter cultivars that are preferred for adoption. In this study, the estimates of variance components, heritability and response to selection were studied in F3 yam bean families selected from interspecies crosses targeting improvement of storage root dry matter and associated traits. Breeding populations were generated using North Carolina II (NC II) mating design involving high dry matter P. tuberosus chuin cultivar, low dry matter P. ahipa and the high yielding P. erosus yam beans. The progenies were advanced through selfing from F1 to F2 population and then exposed to selection at 10% selection intensity to obtain 83 high dry matter lines. The selected lines were evaluated in an F3 trial using a randomized complete block design (RCBD) with three replications at the National Crops Resources Research Institute (NaCRRI) Namulonge, in Central Uganda. The results revealed significant (P P
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- 2021
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6. Metabolite database for root, tuber, and banana crops to facilitate modern breeding in understudied crops
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Luis Augusto Becerra Lopez-Lavalle, Delphine Amah, Ranjana Bhattacharjee, Laura Perez-Fons, Margit Drapal, Paul D. Fraser, Elliott J. Price, Rony Swennen, Bettina Heider, and Mathieu Rouard
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Resource ,Crops, Agricultural ,0106 biological sciences ,0301 basic medicine ,Germplasm ,potato (Solanum tuberosum) ,Plant Science ,Breeding ,Biology ,computer.software_genre ,Ipomoea ,Plant Roots ,01 natural sciences ,Banana and plantain (Musa spp.) ,Crop ,03 medical and health sciences ,Metabolomics ,sweet potato (Ipomoea batatas) ,Genetics ,Plant breeding ,Food security ,Tropical agriculture ,Database ,cassava (Manihot esculenta) ,fungi ,yam (Dioscorea spp.) ,Correction ,food and beverages ,Musa ,Cell Biology ,biology.organism_classification ,Solanum tuberosum ,metabolomics ,Plant Breeding ,Plant Tubers ,030104 developmental biology ,Databases as Topic ,genebanks ,Metabolome ,modern breeding ,computer ,010606 plant biology & botany - Abstract
Summary Roots, tubers, and bananas (RTB) are vital staples for food security in the world's poorest nations. A major constraint to current RTB breeding programmes is limited knowledge on the available diversity due to lack of efficient germplasm characterization and structure. In recent years large‐scale efforts have begun to elucidate the genetic and phenotypic diversity of germplasm collections and populations and, yet, biochemical measurements have often been overlooked despite metabolite composition being directly associated with agronomic and consumer traits. Here we present a compound database and concentration range for metabolites detected in the major RTB crops: banana (Musa spp.), cassava (Manihot esculenta), potato (Solanum tuberosum), sweet potato (Ipomoea batatas), and yam (Dioscorea spp.), following metabolomics‐based diversity screening of global collections held within the CGIAR institutes. The dataset including 711 chemical features provides a valuable resource regarding the comparative biochemical composition of each RTB crop and highlights the potential diversity available for incorporation into crop improvement programmes. Particularly, the tropical crops cassava, sweet potato and banana displayed more complex compositional metabolite profiles with representations of up to 22 chemical classes (unknowns excluded) than that of potato, for which only metabolites from 10 chemical classes were detected. Additionally, over 20% of biochemical signatures remained unidentified for every crop analyzed. Integration of metabolomics with the on‐going genomic and phenotypic studies will enhance ’omics‐wide associations of molecular signatures with agronomic and consumer traits via easily quantifiable biochemical markers to aid gene discovery and functional characterization., Significance Statement A metabolite‐specific database cataloguing the biochemical diversity within and between root, tuber, and banana (RTB) crops has been compiled from profiling thousands of accessions. The database records the extent of metabolite concentrations available in screened germplasm of each RTB crop and therefore can be used to set breeding targets. This information aids in crop breeding programmes to improve the livelihoods for more than two billion people reliant on RTB crops.
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- 2020
7. Molecular Characterization of Cultivated Species of the Genus Pachyrhizus Rich. ex DC. by AFLP Markers: Calling for More Data
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Marc Delêtre, Jorge Núñez, Genoveva Rossel, Marten Sørensen, Monica Santayana, Wolfgang J. Grüneberg, Ronald Robles, Bettina Heider, and Victor Fernández
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Germplasm ,Genetic diversity ,Phylogenetic tree ,Plant Science ,Biology ,biology.organism_classification ,Analysis of molecular variance ,chemistry.chemical_compound ,chemistry ,Pachyrhizus ,Molecular marker ,Botany ,Genetics ,Amplified fragment length polymorphism ,Phaseoleae - Abstract
Yam beans (Pachyrhizus DC.) are legume root crops that have attracted scientific interest because of high contents of starch, protein, and iron in their roots. In this study, 58 accessions of three cultivated Pachyrhizus species were characterized by amplified fragment length polymorphism (AFLP) molecular markers in order to estimate genetic diversity and interspecific relationships. To complement molecular marker information, individuals from each accession were analyzed in order to confirm ploidy levels. Eight AFLP primer combinations detected 136 (68.7 %) polymorphic bands. Shannon’s diversity indices (Hs) for each species were 1.04 (P. ahipa), 1.07 (P. tuberosus), and 2.42 (P. erosus), while the total diversity index was 2.45. Phylogenetic analysis, principal coordinate analysis and analysis of molecular variance (F ST = 0.796) all showed significant species differentiation. All accessions were diploid (2n = 2x = 22), which is characteristic of the tribe Phaseoleae. Finally, a misclassified accession of P. tuberosus was identified. Molecular characterization of accessions is necessary for efficient management of germplasm collections.
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- 2014
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8. Analysis of Genetic Variation Among Accessions of Pueraria montana (Lour.) Merr. var. lobata and Pueraria phaseoloides (Roxb.) Benth. based on RAPD Markers
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Tanja Berndl, Elke Fischer, Bettina Heider, and Rainer Schultze-Kraft
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Germplasm ,Pueraria ,Genetic diversity ,ved/biology ,ved/biology.organism_classification_rank.species ,Plant Science ,Biology ,biology.organism_classification ,RAPD ,Lobata ,Botany ,Genetic variation ,Pueraria montana ,Genetics ,Pueraria phaseoloides ,Agronomy and Crop Science ,Ecology, Evolution, Behavior and Systematics - Abstract
Pueraria montana var. lobata and P. phaseoloides originating from tropical Asia and parts of Oceania are ecologically and economically important legumes that are used as green manure, cover crop or forage plants. Conservation and use of plant genetic resources require an understanding of the extent and distribution of genetic diversity in any given region. In this study, genetic variation of five P. montana var. lobata and 16 P. phaseoloides accessions was analysed developing a random amplified polymorphic DNA (RAPD) marker methodology for Pueraria species and thereby creating basic data for follow-up research and the development of conservation strategies. Seeds were collected from native populations in Bac Kan Province, a mountainous region in Northeast Vietnam. P. montana var. lobata presented a high level of variation with 54.3% of the detected markers being polymorphic, whereas P. phaseoloides exhibited an intermediate to high level of variation (45.5%). The P. montana var. lobata accessions clustered in congruence with their eco-geographical origin. For P. phaseoloides no correspondence between sampling sites and genetic differentiation was found. Inter-population differentiation was measured as Jaccard's similarity coefficient (JSC). Mean JSC amounted to 0.35 in P. montana var. lobata and 0.52 in P. phaseoloides. Results are compared to other genetic studies of herbaceous legumes and conservation strategies are suggested.
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- 2006
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