Phosphate deficiency induced by infection promotes synthesis of anthracnose-resistant anthocyanin-3-O-galactoside phytoalexins in the Camellia sinensis plant.

ABSTRACT: Tea (Camellia sinensis) is a well-known beverage crop rich in polyphenols with health benefits for humans. Understanding how tea polyphenols participate in plant resistance is beneficial to breeding resistant varieties and uncovering the resistance mechanisms. Here, we report that a Colletotrichum infection-induced 'pink ring' symptom appeared outside the lesion, which is highly likely to occur in resistant cultivars. By identifying morphological feature-specific metabolites in the pink ring and their association with disease resistance, and analysis of the association between metabolite and gene expression, the study revealed that the accumulation of anthocyanin-3-O-galactosides, red phytotoxin compounds resistant to anthracnose, plays a pivotal role in the hypersensi

SUBMITTER: Li T 

PROVIDER: S-EPMC10709544 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature