Genome-wide association study reveals candidate genes for flowering time in cowpea (Vigna unguiculata[L.] Walp)
| Autor: | Dev Paudel, Esteban F. Rios, Julia Rosenwald, María Muñoz-Amatriaín, Rocheteau Dareus |
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| Rok vydání: | 2021 |
| Předmět: |
0301 basic medicine
Candidate gene biology Single-nucleotide polymorphism Genome-wide association study biology.organism_classification Vigna Crop 03 medical and health sciences Horticulture 030104 developmental biology 0302 clinical medicine 030220 oncology & carcinogenesis Adaptation Ploidy Genetic association |
| Popis: | Cowpea (Vigna unguiculata[L.] Walp., diploid, 2n= 22) is a major crop used as a protein source for human consumption as well as a quality feed for livestock. It is drought and heat tolerant and has been bred to develop varieties that are resilient to changing climates. Plant adaptation to new climates and their yield are strongly affected by flowering time. Therefore, understanding the genetic basis of flowering time is critical to advance cowpea breeding. The aim of this study was to perform genome-wide association studies (GWAS) to identify marker trait associations for flowering time in cowpea using single nucleotide polymorphism (SNP) markers. A total of 367 accessions from a cowpea minicore collection were evaluated in Ft. Collins, CO in 2019 and 2020, and 292 accessions were evaluated in Citra, FL in 2018. These accessions were genotyped using the Cowpea iSelect Consortium Array that contained 51,128 SNPs. GWAS revealed seven reliable SNPs for flowering time that explained 8-12% of the phenotypic variance. Candidate genes includingFT, GI, CRY2, LSH3, UGT87A2, LIF2, andHTA9that are associated with flowering time were identified for the significant SNP markers. Further efforts to validate these loci will help to understand their role in flowering time in cowpea, and it could facilitate the transfer of some of this knowledge to other closely related legume species. |
| Databáze: | OpenAIRE |
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