The amino acid permease <i>SlAAP6</i> contributes to tomato growth and salt tolerance by mediating branched-chain amino acid transport.

ABSTRACT: Branched-chain amino acids (BCAAs) are essential amino acids in tomato (Solanum lycopersicum) required for protein synthesis, which also modulate growth and abiotic stress responses. To date, little is known about their uptake and transport in tomato especially under abiotic stress. Here, the tomato amino acid permease 6 (SlAAP6) gene was identified as an amino acid transporter that restored mutant yeast cell growth on media with a variety of amino acids, including BCAAs. Overexpression of SlAAP6 (SlAAP6-OE) in tomato raised the BCAA content and elevated the fresh weight, while SlAAP6 knockouts (slaap6) showed reduced levels of neutral and basic amino acids in seedling tissues and lower total free amino acid distribution to shoots. In compar

SUBMITTER: Qiang Q 

PROVIDER: S-EPMC11775608 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature