CmVNI2-CmMYB3 module regulates flavonol biosynthesis in response to low temperature in chrysanthemum flower.

ABSTRACT: Flavonols represent a large subgroup of flavonoids and function as the principal bioactive compounds in tea and medicinal chrysanthemum (Chrysanthemum morifolium) flowers. Low temperature is one of the most significant environmental factors influencing flavonol accumulation. Nevertheless, the regulatory mechanisms governing flavonol biosynthesis in response to low temperature remain predominantly uncharacterized. In this study, we observed decreased flavonol accumulation in chrysanthemum flowers under low-temperature conditions, correlating with reduced expression of the NAC transcription factor VND-INTERACTING2 (VNI2). The suppression of CmVNI2 resulted in diminished flavonol content. DNA affinity purification sequencing and RNA sequencing analyses demonstrated that CmVNI2 directly regula

SUBMITTER: Jiang T 

PROVIDER: S-EPMC12509343 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature