Lily WRKY factor LlWRKY22 promotes thermotolerance through autoactivation and activation of LlDREB2B.

ABSTRACT: Most of WRKY transcription factors play important roles in plant development, protection against disease, and response to abiotic stress; however, their roles in lily are largely unknown. Transcriptome analysis in lily (Lilium longiflorum) led to the identification and isolation of a WRKY-IIe gene, LlWRKY22, which was found to be activated at high temperature and play a positive role in thermotolerance regulation. LlWRKY22 expression was continuously activated by heat stress. We further found that LlWRKY22 protein localized to the nucleus and exhibited transactivation activity in both yeast and plant cells, and that its C terminus contributed to its transactivation activity. Meanwhile, overexpression of LlWRKY22 in lily improved thermotolerance and activated the

SUBMITTER: Wu Z 

PROVIDER: S-EPMC9627522 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature