Rice Cinnamoyl CoA Reductase-like Gene <i>OsCCR14</i> Involved in Heat Stress via Regulation Lignin and Flavonoid Accumulation.

ABSTRACT: Cinnamoyl-CoA reductases (CCRs) and their homologs, CCR-like proteins, play key roles in plant secondary metabolism and defense against environmental stresses; however, their functions in heat stress responses remain unclear. In this study, phylogenetic and sequence alignment analyses revealed that OsCCR14 encodes a CCR-like protein. qRT-PCR assays showed that OsCCR14 is predominantly expressed in roots and is induced by heat stress. Notably, overexpression of OsCCR14 increased lignin content, and transgenic plants with enhanced OsCCR14 expression exhibited higher flavonoid accumulation in roots. Conversely, knockout of OsCCR14 reduced flavonoid content and impaired seedling heat tolerance. Furthermore, OsCCR14 overexpression improved heat tolerance, accompanied by increased root lignifica

SUBMITTER: Wang H 

PROVIDER: S-EPMC12693918 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature