Allelic Diversity at Abiotic Stress Responsive Genes in Relationship to Ecological Drought Indices for Cultivated Tepary Bean, Phaseolus acutifolius A. Gray, and Its Wild Relatives
| Autor: | Jaime Eduardo Muñoz-Flórez, L. Carmenza Muñoz, Felipe López-Hernández, María Angélica Buitrago-Bitar, Andrés J. Cortés, Jorge Mario Londoño-Caicedo, Matthew W. Blair |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Candidate gene Acclimatization drought tolerance environmental indices 01 natural sciences LRR receptor-like serine/threonine-protein kinase ERECTA-encoding gene Gene Expression Regulation Plant Genotype Tepary Bean Genetics (clinical) Plant Proteins Phaseolus Phaseolus parvifolius Freytag food and beverages Droughts abscisic acid- stress- and ripening-induced (Asr) gene dehydration responsive element binding (Dreb) gene Phaseolus acutifolius Crops Agricultural candidate gene approach lcsh:QH426-470 Drought tolerance climate adaptation Biology Polymorphism Single Nucleotide Article 03 medical and health sciences food Stress Physiological Botany parasitic diseases Genetics Allele Mexico Abiotic stress Directional selection fungi Sequence Analysis DNA Thornthwaite’s potential evapotranspiration (PET) model food.food United States lcsh:Genetics 030104 developmental biology Gene-Environment Interaction 010606 plant biology & botany |
| Zdroj: | Genes Volume 12 Issue 4 Genes, Vol 12, Iss 556, p 556 (2021) |
| ISSN: | 2073-4425 |
| DOI: | 10.3390/genes12040556 |
| Popis: | Some of the major impacts of climate change are expected in regions where drought stress is already an issue. Grain legumes are generally drought susceptible. However, tepary bean and its wild relatives within Phaseolus acutifolius or P. parvifolius are from arid areas between Mexico and the United States. Therefore, we hypothesize that these bean accessions have diversity signals indicative of adaptation to drought at key candidate genes such as: Asr2, Dreb2B, and ERECTA. By sequencing alleles of these genes and comparing to estimates of drought tolerance indices from climate data for the collection site of geo-referenced, tepary bean accessions, we determined the genotype x environmental association (GEA) of each gene. Diversity analysis found that cultivated and wild P. acutifolius were intermingled with var. tenuifolius and P. parvifolius, signifying that allele diversity was ample in the wild and cultivated clade over a broad sense (sensu lato) evaluation. Genes Dreb2B and ERECTA harbored signatures of directional selection, represented by six SNPs correlated with the environmental drought indices. This suggests that wild tepary bean is a reservoir of novel alleles at genes for drought tolerance, as expected for a species that originated in arid environments. Our study corroborated that candidate gene approach was effective for marker validation across a broad genetic base of wild tepary accessions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|