Location: Tropical Crops and Germplasm Research
Title: Genetic variation in a tepary bean (Phaseolus Acutifolius A. Gray) diversity panel reveals loci associated with biotic stress resistanceAuthor
BORNOWSKI, NOLAN - Michigan State University | |
HART, JOHN - Earthwork Seeds Inc | |
VARGAS PALACIOS, ANA - University Of Saskatchewan | |
OGG, BARRY - Colorado State University | |
BRICK, MARK - Colorado State University | |
BEAVER, JAMES - University Of Puerto Rico | |
HAMILTON, JOHN - University Of Georgia | |
BUELL, ROBIN - University Of Georgia | |
Porch, Timothy - Tim |
Submitted to: The Plant Genome
Publication Type: Peer Reviewed Journal Publication Acceptance Date: 5/26/2023 Publication Date: 6/18/2023 Citation: Bornowski, N., Hart, J., Vargas Palacios, A., Ogg, B., Brick, M., Beaver, J., Hamilton, J., Buell, R., Porch, T.G. 2023. Genetic variation in a tepary bean (Phaseolus Acutifolius A. Gray) diversity panel reveals loci associated with biotic stress resistance. The Plant Genome. 16(3). Article e20363. https://doi.org/10.1002/tpg2.20363. DOI: https://doi.org/10.1002/tpg2.20363 Interpretive Summary: Tepary bean, indigenous to the arid climates of northern Mexico, diverged from common bean approximately 2 million years ago and exhibits a wide range of resistance to biotic stressors in addition to being more well-adapted to higher temperatures that are increasingly likely due to climate change. The tepary genome is highly syntenic to the common bean genome providing a foundation for discovery and breeding of agronomic traits between these two crop species. To date, a limited number of adaptive traits from tepary bean have been introgressed into common bean lines due to the hybridization barriers between these two species. To fully utilize tepary bean germplasm as a donor of adaptive traits, development of modern breeding resources and germplasm characterization is required. In this study, a diversity panel of 423 cultivated, weedy, and wild tepary bean accessions were genotyped and phenotyped revealing eight subpopulations and differentiation of subspecies. A genome-wide association study was performed with the 423-member diversity panel that illuminated loci and candidate genes underlying biotic stress resistance that can be harnessed not only for tepary bean but also common bean improvement. Technical Abstract: Tepary bean (Phaseolus acutifolius A. Gray), indigenous to the arid climates of northern Mexico, diverged from common bean (Phaseolus vulgaris L.) approximately 2 million years ago and exhibits a wide range of resistance to biotic stressors in addition to being more well-adapted to higher temperatures that are increasingly likely due to climate change. The tepary genome is highly syntenic to the common bean genome providing a foundation for discovery and breeding of agronomic traits between these two crop species. To date, a limited number of adaptive traits from tepary bean have been introgressed into common bean lines due to the hybridization barriers between these two species. To fully utilize tepary bean germplasm as a donor of adaptive traits, development of modern breeding resources and germplasm characterization is required. In this study, a diversity panel of 423 cultivated, weedy, and wild tepary bean accessions were genotyped and phenotyped revealing eight subpopulations and differentiation of subspecies. A genome-wide association study was performed with the 423-member diversity panel that illuminated loci and candidate genes underlying biotic stress resistance that can be harnessed not only for tepary bean but also common bean improvement. |