HEAT SHOCK TRANSCRIPTION FACTOR B2b acts as a transcriptional repressor of VIN3, a gene induced by long-term cold for flowering.

ABSTRACT: Vernalization, an acceleration of flowering after long-term winter cold, is an intensively studied flowering mechanism in winter annual plants. In Arabidopsis, Polycomb Repressive Complex 2 (PRC2)-mediated suppression of the strong floral repressor, FLOWERING LOCUS C (FLC), is critical for vernalization and a PHD finger domain protein, VERNALIZATION INSENSITIVE 3 (VIN3), recruits PRC2 on FLC chromatin. The level of VIN3 was found to gradually increase in proportion to the length of cold period during vernalization. However, how plants finely regulate VIN3 expression according to the cold environment has not been completely elucidated. As a result, we performed EMS mutagenesis using a transgenic line with a minimal promoter of VIN3 fused to the GUS reporter gene, and isolated a mutant, hype

SUBMITTER: Jeong G 

PROVIDER: S-EPMC9243095 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature