华中农业大学揭示番茄产量性状遗传和驯化基础

　　Tomato （Solanum lycopersicum� is a highly valuable fruit crop, and yield is one of the most im portant agro nomic traits. However, the genetic architecture underlying tomato yield-related traits has not been fully addressed. ba sed on �?.4 million single nucleotide polymorphisms obtained from 605 diverse accessions, we performed a comprehensive genome-wide association study for 27 agro nomic traits in tomato. A total of 239 significant associations correspo nding to 129 loci, harboring many previously reported and additio nal genes related to vegetative and reproductive development, were identified, and these loci explained an average of �?.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 functio nally 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.

　　论文链接：https://doi.org/10.1093/plphys/kiab230