生物
开花位点C
多年生植物
拟南芥
基因座(遗传学)
表观遗传学
抑制因子
春化
越冬
基因沉默
植物
遗传学
进化生物学
光周期性
转录因子
基因
突变体
作者
Hiroaki Nishio,Hiroshi Kudoh
标识
DOI:10.1016/j.gde.2022.102016
摘要
Despite the similarity in temperature regimes between late autumn and early spring, plants exhibit distinct developmental responses that result in distinct morphologies, that is, overwintering and reproductive forms. In Arabidopsis, the control of autumn-spring distinction involves the transcriptional regulation of the floral repressor FLOWERING LOCUS C (FLC). The memory of winter cold is registered as epigenetic silencing of FLC. Recent studies on A. thaliana FLC revealed detailed and additional mechanisms of silencing in response to autumn and winter cold. Studies on perennial Arabidopsis FLC revealed that its expression responds to spring warmth and is robustly upregulated, ignoring cold. These new studies provide mechanistic insights into the distinct regulation of FLC under autumn and spring temperature regimes.
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