Genome-wide association study reveals the genetic architecture of 27 agronomic traits in tomato.
Plant Physiol
; 186(4): 2078-2092, 2021 08 03.
Article
em En
| MEDLINE
| ID: mdl-34618111
ABSTRACT
Tomato (Solanum lycopersicum) is a highly valuable fruit crop, and yield is one of the most important agronomic traits. However, the genetic architecture underlying tomato yield-related traits has not been fully addressed. Based on â¼4.4 million single nucleotide polymorphisms obtained from 605 diverse accessions, we performed a comprehensive genome-wide association study for 27 agronomic traits in tomato. A total of 239 significant associations corresponding to 129 loci, harboring many previously reported and additional genes related to vegetative and reproductive development, were identified, and these loci explained an average of â¼8.8% of the phenotypic variance. A total of 51 loci associated with 25 traits have been under selection during tomato domestication and improvement. Furthermore, a candidate gene, Sl-ACTIVATED MALATE TRANSPORTER15, that encodes an aluminum-activated malate transporter was functionally characterized and shown to act as a pivotal regulator of leaf stomata formation, thereby affecting photosynthesis and drought resistance. This study provides valuable information for tomato genetic research and breeding.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fenótipo
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Solanum lycopersicum
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Genoma de Planta
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Polimorfismo de Nucleotídeo Único
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Estudo de Associação Genômica Ampla
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Domesticação
Tipo de estudo:
Prognostic_studies
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Risk_factors_studies
Idioma:
En
Revista:
Plant Physiol
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
China