Gibberellin promotes theanine synthesis by relieving the inhibition of CsWRKY71 on CsTSI in tea plant (Camellia sinensis).

ABSTRACT: Theanine is a crucial indicator of tea quality, and its significance is closely tied to the economic value of tea. There have been many reports on the regulation mechanism of theanine synthesis and accumulation, but the mechanism by which gibberellin regulates theanine synthesis in tea plants is poorly understood. Previous studies have shown that the content of theanine experiences significant changes in the growth stages of tea shoots, displaying a strong correlation with gibberellin. This study confirmed that gibberellin significantly promoted the expression of the major gene of theanine synthesis, known as CsTSI. Additionally, the study identified CsWRKY71 as a transcription factor that mediated the regulation by gibberellin of theanine synthesis in tea plants. CsWRKY71 was local

SUBMITTER: Xiang F 

PROVIDER: S-EPMC11817880 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature