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首页> 外文期刊>Signal transduction: Receptors, mediators and genes: Official journal of the Signal Transduction Society >Interacting signal transduction chains in gravity-stimulated maize roots
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Interacting signal transduction chains in gravity-stimulated maize roots

机译：重力刺激玉米根中的相互作用信号转导链

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摘要

Gravitropism in roots involves at least three signal transduction chains. The first signal transduction chain is sub-cellular and operates within the gravity-perceiving cells in the root apex. The output of this perception system feeds into a second intercellular signal transduction chain (widely considered to involve auxin movement) that links events in the apical regions with the third signal transduction chain that controls cell expansion in the elongating cells. The present study probes the disputed role of ethylene in gravitropism by seeking to identify which parts of the gravitropism cascade are influenced by ethylene action. The results suggest that another signal transduction chain, initiated by mechanical impedance to the root apex, interacts with the early stages of the gravitropism cascade and the effects of ethylene on gravitropism could be mediated by the mechanical impedance sensing and response systems.
机译：根的引力作用涉及至少三个信号转导链。第一信号转导链是亚细胞的，并在根尖的重力感知细胞内运行。该感知系统的输出馈入第二个细胞间信号转导链（被广泛认为是涉及植物生长素的运动），该链将根尖区域中的事件与控制伸长细胞中细胞扩增的第三条信号转导链联系起来。本研究通过寻求确定重力作用级联的哪些部分受到乙烯作用的影响，探讨了乙烯在重力作用中的争议作用。结果表明，另一条信号传导链是由对根尖的机械阻抗引发的，与重力趋向级联的早期阶段相互作用，并且机械阻抗感测和响应系统可以介导乙烯对重力的影响。

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