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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Winter disruption of the circadian clock in chestnut
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Winter disruption of the circadian clock in chestnut

机译：栗子生物钟的冬季破坏

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摘要

Circadian clock performance during winter dormancy has been investigated in chestnut by using as marker genes CsTOC1 and CsLHY. which are homologous to essential components of the central circadian oscillator in Arabidopsis. During vegetative growth, mRNA levels of these two genes in chestnut seedlings and adult plants cycled daily, as expected. However, during winter dormancy, CsTOC1 and CsLHY mRNA levels were high and did not oscillate, indicating that the circadian clock was altered. A similar disruption was induced by chilling chestnut seedlings (to 4℃). Normal cycling resumed when endodormant or cold-treated plants were returned to 22℃. The behavior of CsTOC1 and CsLHY during a cold response reveals a relevant aspect of clock regulation not yet encountered in Arabidopsis.
机译：通过使用CsTOC1和CsLHY作为标记基因，对栗子在冬季休眠期间的昼夜节律性能进行了研究。与拟南芥中的中央昼夜节律振荡器的基本成分同源。在营养生长过程中，板栗幼苗和成年植物中的这两个基因的mRNA水平按预期每天循环。但是，在冬季休眠期间，CsTOC1和CsLHY mRNA水平很高且没有振荡，表明昼夜节律时钟已改变。栗子幼苗冷却至4℃也引起了类似的破坏。当将气味消除剂或冷处理过的植物恢复到22℃后，恢复了正常的循环。 CsTOC1和CsLHY的冷反应过程中的行为揭示了拟南芥中尚未遇到的时钟调节的相关方面。

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