Molecular ecology and selection in the drought-related Asr gene polymorphisms in wild and cultivated common bean ([i]Phaseolus vulgaris[/i] L.)
| العنوان: | Molecular ecology and selection in the drought-related Asr gene polymorphisms in wild and cultivated common bean ([i]Phaseolus vulgaris[/i] L.) |
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| المؤلفون: | Dominique This, Santiago Madriñán, M. Carolina Chavarro, Matthew W. Blair, Andrés J. Cortés |
| المساهمون: | Departamento de Biologia, Universidad de los Andes [Bogota], Department of Evolutionary Biology, Uppsala University, Department of Agronomy, University of Georgia [USA], Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro), Department of Plant Breeding and Genetics, Cornell University, Universidad de los Andes [Bogota] (UNIANDES), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), 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), Cornell University [New York] |
| المصدر: | BMC Genetics BMC Genetics, BioMed Central, 2012, 13, ⟨10.1186/1471-2156-13-58⟩ BMC Genetics (13), . (2012) BMC Genetics, Vol 13, Iss 1, p 58 (2012) |
| بيانات النشر: | HAL CCSD, 2012. |
| سنة النشر: | 2012 |
| مصطلحات موضوعية: | 0106 biological sciences, acide abscisique, nucleotide polymorphism, dna polymorphism, microsatellite markers, core, collection, salt tolerance, diversity, domestication, genome, mesoamerican, protein, approche gène candidat, 01 natural sciences, Nucleotide diversity, polymorphisme génétique, Negative selection, Naturvetenskap, Genetics(clinical), Genetics (clinical), Phaseolus, 2. Zero hunger, Genetics, 0303 health sciences, education.field_of_study, Natural selection, Vegetal Biology, Ecology, biology, food and beverages, Droughts, Natural Sciences, Research Article, lcsh:QH426-470, Drought tolerance, Population, Genes, Plant, 03 medical and health sciences, Genetic variation, Botany, [SDV.BV]Life Sciences [q-bio]/Vegetal Biology, Domestication, education, 030304 developmental biology, amélioration génétique, Polymorphism, Genetic, fungi, tolérance à la sécheresse, phaseolus vulgaris, diversité nucléotidique, 15. Life on land, biology.organism_classification, lcsh:Genetics, stress hydrique, Biologie végétale, 010606 plant biology & botany |
| الوصف: | Background The abscisic acid (ABA) pathway plays an important role in the plants’ reaction to drought stress and ABA-stress response (Asr) genes are important in controlling this process. In this sense, we accessed nucleotide diversity at two candidate genes for drought tolerance (Asr1 and Asr2), involved in an ABA signaling pathway, in the reference collection of cultivated common bean (Phaseolus vulgaris L.) and a core collection of wild common bean accessions. Results Our wild population samples covered a range of mesic (semi-arid) to very dry (desert) habitats, while our cultivated samples presented a wide spectrum of drought tolerance. Both genes showed very different patterns of nucleotide variation. Asr1 exhibited very low nucleotide diversity relative to the neutral reference loci that were previously surveyed in these populations. This suggests that strong purifying selection has been acting on this gene. In contrast, Asr2 exhibited higher levels of nucleotide diversity, which is indicative of adaptive selection. These patterns were more notable in wild beans than in cultivated common beans indicting that natural selection has played a role over long time periods compared to farmer selection since domestication. Conclusions Together these results suggested the importance of Asr1 in the context of drought tolerance, and constitute the first steps towards an association study between genetic polymorphism of this gene family and variation in drought tolerance traits. Furthermore, one of our major successes was to find that wild common bean is a reservoir of genetic variation and selection signatures at Asr genes, which may be useful for breeding drought tolerance in cultivated common bean. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 1471-2156 |
| DOI: | 10.1186/1471-2156-13-58⟩ |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8db251c8990b770ae04737f905264e3a https://hal.archives-ouvertes.fr/hal-01206343 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....8db251c8990b770ae04737f905264e3a |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14712156 |
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| DOI: | 10.1186/1471-2156-13-58⟩ |