Melatonin Regulates Root Architecture by Modulating Auxin Response in Rice.
Melatonin Regulates Root Architecture by Modulating Auxin Response in Rice.
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褪黑素通过调节水稻生长素反应来调节根部结构
DOI：
10.3389/fpls.2017.00134
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发表时间：
2017
影响因子：
5.6
通讯作者：
Chu C
中科院分区：
文献类型：
--
作者：
Liang C;Li A;Yu H;Li W;Liang C;Guo S;Zhang R;Chu C
褪黑激素在植物根的生长发育中起着重要的调节作用，但其分子机制尚不清楚。在这项研究中，我们证明了褪黑激素作为一个有效的分子来管理水稻的根构型。褪黑激素处理显著抑制胚根的生长，促进侧根的形成和发育。全基因组表达谱的RNA测序显示，生长素相关基因显着激活褪黑激素治疗。此外，一些转录因子和候选人参与根的生长和发展，以及生长素相关的过程中，顺式调控元件，过度代表在两个共同向上和向下差异表达基因，表明褪黑激素介导的根生长发生在生长素信号通路依赖的方式。此外，向重力反应分析确定，褪黑激素影响生长素调控的水稻根的过程。这些数据表明褪黑激素通过直接或间接激活生长素信号通路来塑造根的结构。
It has been suggested that melatonin acts as an important regulator in controlling root growth and development, but the underlying molecular mechanism driving this relationship remains undetermined. In this study, we demonstrated that melatonin acts as a potent molecule to govern root architecture in rice. Treatments with melatonin significantly inhibited embryonic root growth, and promoted lateral root formation and development. Genome-wide expression profiling by RNA-sequencing revealed auxin-related genes were significantly activated under melatonin treatment. Moreover, several transcription factors and candidate cis-regulatory elements involved in root growth and developments, as well as auxin-related processes, were over-represented in both co-up and -down differentially expressed genes, suggesting that melatonin-mediated root growth occurs in an auxin signal pathway-dependent manner. Further, gravitropic response analysis determined that melatonin affects auxin-regulated processes in rice root. These data show that melatonin shapes root architecture by directly or indirectly activating the auxin signaling pathway.