Flavonols improve thermotolerance in tomato pollen during germination and tube elongation by maintaining ROS homeostasis.

ABSTRACT: Elevated temperatures impair pollen performance and reproductive success, resulting in lower crop yields. The Solanum lycopersicum anthocyanin reduced ( are ) mutant has a FLAVANONE 3 HYDROXYLASE ( F3H ) gene mutation resulting in impaired synthesis of flavonol antioxidants. The are mutant has reduced pollen performance and seed set relative to the VF36 parental line, which is accentuated at elevated temperatures. Transformation of are with the wild-type F3H gene, or chemical complementation with flavonols, prevented temperature-dependent ROS accumulation in pollen and reversed are's reduced viability, germination, and tube elongation to VF36 levels. VF36 transformed with an F3H overexpression construct prevented temperature dr

SUBMITTER: Postiglione AE 

PROVIDER: S-EPMC10769439 | biostudies-literature | 2024 May

REPOSITORIES: biostudies-literature