Distinct responses to autumn and spring temperatures by the key flowering-time regulator FLOWERING LOCUS C
Distinct responses to autumn and spring temperatures by the key flowering-time regulator FLOWERING LOCUS C
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关键开花时间调节因子 FLOWERING LOCUS C 对秋季和春季温度的不同反应
DOI：
10.1016/j.gde.2022.102016
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Kudoh Hiroshi
中科院分区：
文献类型：
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作者：
Nishio Haruki;Kudoh Hiroshi
FLC的转录调控与秋、春的区别有关。不同时间尺度的温度敏感机制调节VIN 3和FLC。温度依赖性生长是一种长期温度敏感机制。棘轮-FLC调节的相似性质实现了强大的常年生活史。FLC调节的多样性机制需要正式的“自然”评估。尽管晚秋和初秋的温度状况相似，春季，植物表现出不同的发育反应，导致不同的形态，即越冬和繁殖形式。在拟南芥中，秋-春区别的控制涉及花阻遏物FLOWERLOCUS C（FLC）的转录调控。冬季寒冷的记忆被登记为FLC的表观遗传沉默。近年来对A. thaliana FLC揭示了响应秋冬寒冷的详细和额外的沉默机制。对多年生拟南芥FLC的研究表明，它的表达对春季温暖有反应，并且强烈上调，忽略了寒冷。这些新的研究提供了机制的见解FLC下秋季和春季温度制度的不同调节。
HighlightsThe autumn–spring distinction involves the transcriptional regulation of FLC.Thermosensing mechanisms at different timescales regulate VIN3 and FLC.Temperature-dependent growth serves as a mechanism to sense long-term temperatures.The ratchet-like property of FLC regulation realizes the robust perennial life cycle.Diverse mechanisms in the FLC regulation require formal ‘in natura’evaluations.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.