Two shikimate dehydrogenases play an essential role in the biosynthesis of galloylated catechins in tea plants.

ABSTRACT: Tea (Camellia sinensis) is widely cultivated throughout the world for its unique flavor and health benefits. Galloylated catechins in tea plants serve as important secondary metabolites that play a pivotal role in tea taste determination and pharmacological effects. However, the genetic basis of galloylated catechins traits remains elusive. We identified a stable and major-effect quantitative trait locus (QTL) associated with galloylated catechins index (GCI), designated qGCI6.2. Within the QTL's confidence interval, two shikimate dehydrogenases (CsSDH4, CsSDH3) were identified. These enzymes catalyze gallic acid (GA) production from 3-dehydroquinate dehydratase, thereby contributing to galloylated catechins accumulation. Quantitative real-time PCR (RT-qPCR) ana

SUBMITTER: Wang L 

PROVIDER: S-EPMC11891478 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature