Mizuno Takeshi, Yamashino Takafumi
Laboratory of Molecular Microbiology, School of Agriculture, Nagoya University, Chikusa-ku, Nagoya, 464-8601 Japan.
Plant Cell Physiol. 2008 Mar;49(3):481-7. doi: 10.1093/pcp/pcn008. Epub 2008 Jan 16.
By adopting two distinct types of comprehensive transcriptome data sets, which are available to the public, we asked the critical question as to whether or not there is any significant correlation between diurnally oscillating genes during the light/dark daily cycle and hormone-responsive genes. The hormones studied here were ABA, ethylene, brassinosteroid, cytokinin, gibberellin, auxin and jasmonate. It was revealed that the expression of a significantly large number of ABA-responsive and/or methyl jasmonate (MJ)-responsive genes oscillate diurnally and robustly during the light/dark cycle. The results of this study implied that some aspects of plant stress responses, basically mediated by ABA and/or MJ, might be regulated daily though the circadian clock function at the level of transcription in order to prepare properly for action against common ambient stresses by anticipating the diurnal day/night cycle.
通过采用两种公开可用的不同类型的综合转录组数据集，我们提出了一个关键问题：在光/暗日常循环中昼夜振荡的基因与激素响应基因之间是否存在任何显著相关性。这里研究的激素有脱落酸（ABA）、乙烯、油菜素内酯、细胞分裂素、赤霉素、生长素和茉莉酸。结果表明，大量ABA响应和/或茉莉酸甲酯（MJ）响应基因的表达在光/暗循环中昼夜强烈振荡。这项研究的结果表明，植物应激反应的某些方面，基本上由ABA和/或MJ介导，可能通过昼夜节律钟在转录水平上的功能进行日常调节，以便通过预测昼夜循环为应对常见环境胁迫做好适当准备。
