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Genome-wide association study reveals the genetic architecture of 27 agronomic traits in tomato
Author(s) -
Jie Ye,
Xin Wang,
Wenqian Wang,
Huiyang Yu,
Ai Guo,
Changxing Li,
Pengya Sun,
Xianyu Wang,
Jianhua Li,
Bo Ouyang,
Junhong Zhang,
Yuyang Zhang,
Heyou Han,
James J. Giovani,
Zhangjun Fei,
Zhibiao Ye
Publication year - 2021
Publication title -
plant physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.554
H-Index - 312
eISSN - 1532-2548
pISSN - 0032-0889
DOI - 10.1093/plphys/kiab230
Subject(s) - biology , domestication , genetic architecture , solanum , gene , candidate gene , genetics , genome wide association study , phenotype , genome , single nucleotide polymorphism , quantitative trait locus , botany , genotype , microbiology and biotechnology
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 ∼4.4 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 ∼8.8% 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.

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