Title
Different loci control resistance to different isolates of the same race of Colletotrichum lindemuthianum in common bean
Date Issued
01 February 2021
Access level
metadata only access
Resource Type
journal article
Author(s)
Costa L.C.
Nalin R.S.
Dias M.A.
Ferreira M.E.
Song Q.
Pastor-Corrales M.A.
de Souza E.A.
Soybean Genomics and Improvement Laboratory
Publisher(s)
Springer Science and Business Media Deutschland GmbH
Abstract
Key message: Linkage and genome-wide association analyses using high-throughput SNP genotyping revealed different loci controlling resistance to different isolates of race 65 of Colletotrichum lindemuthianum in common bean. Abstract: Development of varieties with durable resistance to anthracnose is a major challenge in common bean breeding programs because of the extensive virulence diversity of Colletotrichum lindemuthianum fungus. We used linkage and genome-wide association analyses to tap the genomic regions associated with resistance to different isolates of race 65. Linkage mapping was done using an F2 population derived from the cross between the Mesoamerican common beans BRS Estilo x Ouro Vermelho, inoculated with two different isolates of race 65. Association genetics relied on a diversity common bean panel containing 189 common bean accessions inoculated with five different isolates of race 65 as an attempt to validate the linkage analysis findings and, eventually, identify other genomic regions associated with resistance to race 65. The F2 population and diversity panel were genotyped with the BARCBean6K_3 Illumina BeadChip containing 5398 SNP markers. Both linkage and genome-wide association analyses identified different loci controlling resistance to different isolates of race 65 on linkage group Pv04. Genome-wide association analysis also detected loci on Pv05, Pv10 and Pv11 associated with resistance to race 65. These findings indicate that resistance to race 65 can be overcome by the virulence diversity among different isolates of the same race and could lead to the loss of resistance after cultivar release. We identified 25 resistant common bean cultivars to all five isolates of race 65 in the diversity panel. The accessions should be useful to develop cultivars combining different resistance genes that favor durable resistance to anthracnose in common bean.
Start page
543
End page
556
Volume
134
Issue
2
Language
English
OCDE Knowledge area
Ética relacionada con la biotecnología ambiental Genética, Herencia
Scopus EID
2-s2.0-85094832896
PubMed ID
Source
Theoretical and Applied Genetics
ISSN of the container
00405752
Source funding
Agricultural Research Service
Sponsor(s)
This study was funded by Coordenadoria de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) (grant number: 88881.131945/2016–01) and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) (grant number: 140589/2015–5). Acknowledgements The authors are grateful to the following Brazilian funding agencies: Coordenadoria de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), and Fundação de Apoio à Pesquisa do Estado de Minas Gerais (FAPEMIG). This research was also supported by the US Department of Agriculture, Agriculture Research Service, USA, and by EMBRAPA–Brazilian Corporation for Agricultural Research.
Sources of information: Directorio de Producción Científica Scopus