The LNK1 night light-inducible and clock-regulated gene is induced also in response to warm-night through the circadian clock nighttime repressor in Arabidopsis thaliana.
The LNK1 night light-inducible and clock-regulated gene is induced also in response to warm-night through the circadian clock nighttime repressor in Arabidopsis thaliana.
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DOI：
10.4161/psb.28505
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发表时间：
2014
影响因子：
2.9
通讯作者：
Yamashino T
中科院分区：
文献类型：
--
作者：
Mizuno T;Takeuchi A;Nomoto Y;Nakamichi N;Yamashino T
环境温度对拟南芥生物钟系统有两个基本的影响，分别是温度补偿和诱导。这些与温度有关的长期问题尚未完全澄清。最近，我们提供的证据表明，温度信号通过由LUX-ELF 3-ELF 4组成的夜间复合物（EC）夜间阻遏物进入时钟转录回路，并且PRR 9，PRR 7，GI和LUX通常通过夜间阻遏物来调节，以响应温度的适度变化（106 °C）和稳态生长相容温度的差异。（16 °C至28 °C）。核心时钟基因的这些温度相关特征可能与基本振荡器功能有关。在这里，我们进一步表明，最近发现的LNK 1夜光诱导和时钟控制的基因，实际上在白天有一个强大的峰值，也是通过EC夜间阻遏物的方式非常类似于PRR 7，这也是夜光诱导的白天基因，通过温暖的夜晚诱导。基于这些发现，一个假设的观点提出了关于中央振荡器的温度夹带。
Ambient temperature has two fundamental impacts on the Arabidopsis circadian clock system in the processes referred to as temperature compensation and entrainment, respectively. These temperature-related longstanding problems have not yet been fully clarified. Recently, we provided evidence that temperature signals feed into the clock transcriptional circuitry through the evening complex (EC) nighttime repressor composed of LUX-ELF3-ELF4, and that the transcription of PRR9, PRR7, GI and LUX is commonly regulated through the nighttime repressor in response to both moderate changes in temperature (∆6 °C) and differences in steady-state growth-compatible temperature (16 °C to 28 °C). These temperature-associated characteristics of the core clock genes might be relevant to the fundamental oscillator functions. Here, we further show that the recently identified LNK1 night light-inducible and clock-controlled gene, which actually has a robust peak at daytime, is induced also by warm-night through the EC nighttime repressor in a manner very similar to PRR7, which is also night light-inducible daytime gene. Based on these findings, a hypothetical view is proposed with regard to the temperature entrainment of the central oscillator.