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Genome-wide association analysis of symbiotic nitrogen fixation in common bean.
Kamfwa, Kelvin; Cichy, Karen A; Kelly, James D.
Afiliação
  • Kamfwa K; Department of Plant, Soil and Microbial Sciences, Michigan State University, 1066 Bogue St, East Lansing, MI, 48824, USA.
  • Cichy KA; USDA-ARS, Sugarbeet and Bean Research Unit, Michigan State University, 1066 Bogue St, East Lansing, MI, 48824, USA.
  • Kelly JD; Department of Plant, Soil and Microbial Sciences, Michigan State University, 1066 Bogue St, East Lansing, MI, 48824, USA. kellyj@msu.edu.
Theor Appl Genet ; 128(10): 1999-2017, 2015 Oct.
Article em En | MEDLINE | ID: mdl-26133733
KEY MESSAGE: Significant SNPs and candidate genes for symbiotic nitrogen fixation (SNF) and related traits were identified on Pv03, Pv07 and Pv09 chromosomes of common bean. A genome-wide association study (GWAS) was conducted to explore the genetic basis of variation for symbiotic nitrogen fixation (SNF) and related traits in the Andean Diversity Panel (ADP) comprising 259 common bean (Phaseolus vulgaris) genotypes. The ADP was evaluated for SNF and related traits in both greenhouse and field experiments. After accounting for population structure and cryptic relatedness, significant SNPs were identified on chromosomes Pv03, Pv07 and Pv09 for nitrogen derived from atmosphere (Ndfa) in the shoot at flowering, and for Ndfa in seed. The SNPs for Ndfa in shoot and Ndfa in seed co-localized on Pv03 and Pv09. Two genes Phvul.007G050500 and Phvul.009G136200 that code for leucine-rich repeat receptor-like protein kinases (LRR-RLK) were identified as candidate genes for Ndfa. LRR-RLK genes play a key role in signal transduction required for nodule formation. Significant SNPs identified in this study could potentially be used in marker-assisted breeding to accelerate genetic improvement of common bean for SNF.
Assuntos

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Genes de Plantas / Phaseolus / Fixação de Nitrogênio Tipo de estudo: Risk_factors_studies Idioma: En Ano de publicação: 2015 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Genes de Plantas / Phaseolus / Fixação de Nitrogênio Tipo de estudo: Risk_factors_studies Idioma: En Ano de publicação: 2015 Tipo de documento: Article