| Texto completo | |
| Autor(es): |
Giordani, Willian
;
Gama, Henrique Castro
;
Chiorato, Alisson Fernando
;
Franco Garcia, Antonio Augusto
;
Carneiro Vieira, Maria Lucia
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | G3-GENES, GENOMES, GENETICS; v. 12, n. 4, p. 16-pg., 2022-02-26. |
| Resumo | |
Seed weight and size are important yield components. Thus, selecting for large seeds has been a key objective in crop domestication and breeding. In common bean, seed shape is also important since it influences industrial processing and plays a vital role in determining the choices of consumers and farmers. In this study, we performed genome-wide association studies on a core collection of common bean accessions to dissect the genetic architecture and identify genomic regions associated with seed morphological traits related to weight, size, and shape. Phenotypic data were collected by high-throughput image-based approaches, and utilized to test associations with 10,362 single-nucleotide polymorphism markers using multilocus mixed models. We searched within genome-associated regions for candidate genes putatively involved in seed phenotypic variation. The collection exhibited high variability for the entire set of seed traits, and the Andean gene pool was found to produce larger, heavier seeds than the Mesoamerican gene pool. Strong pairwise correlations were verified for most seed traits. Genome-wide association studies identified marker-trait associations accounting for a considerable amount of phenotypic variation in length, width, projected area, perimeter, and circularity in 4 distinct genomic regions. Promising candidate genes were identified, e.g. those encoding an AT-hook motif nuclear-localized protein 8, type 2C protein phosphatases, and a protein Mei2-like 4 isoform, known to be associated with seed size and weight regulation. Moreover, the genes that were pinpointed are also good candidates for functional analysis to validate their influence on seed shape and size in common bean and other related crops. (AU) | |
| Processo FAPESP: | 18/09069-7 - Mapeamento de regiões genômicas e identificação de genes candidatos associados à resposta do feijoeiro comum ao nematoide de galhas (Meloidogyne incognita) |
| Beneficiário: | Willian Giordani |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 20/02755-2 - Resposta de acessos de feijoeiro ao nematoide de galhas Meloidogyne incognita: mapeamento de QLTs, perfil transcricional e estudo funcional de genes candidatos de resistência |
| Beneficiário: | Maria Lúcia Carneiro Vieira |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 14/06647-9 - Identificação de regiões genômicas envolvidas no controle do teor de ferro e zinco em feijão comum via mapeamento associativo |
| Beneficiário: | Augusto Lima Diniz |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |