Gene Networks Involved in Hormonal Control of Root Development in Arabidopsis thaliana: A Framework for Studying Its Disturbance by Metal Stress.
Gene Networks Involved in Hormonal Control of Root Development in Arabidopsis thaliana: A Framework for Studying Its Disturbance by Metal Stress.
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DOI：
10.3390/ijms160819195
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发表时间：
2015-08-14
影响因子：
5.6
通讯作者：
Remans T
中科院分区：
文献类型：
--
作者：
De Smet S;Cuypers A;Vangronsveld J;Remans T
植物在非生物胁迫条件下的生存需要形态和生理上的适应。不利的土壤条件直接影响根的发育，尽管潜在的机制在很大程度上仍有待发现。植物激素调节正常的根生长，并调节根对非生物胁迫的形态反应。激素合成、信号转导、感知和串扰形成了一个复杂的网络，金属胁迫可以在其中进行干扰，导致根的生长变化。我们以拟南芥为研究对象，对其在根发育中的基因网络进行了深入的研究，并提供了有关根的解剖和生长的基本术语。综述了与植物激素作用相关的基因网络、机制和相互作用的知识。大多数知识都是关于生长素的，生长素是一种研究得最好的激素，在根的发育中具有明显的主要作用。此外，还讨论了细胞分裂素、赤霉素、脱落酸、乙烯、茉莉酸、木犀草酮、油菜素甾体和水杨酸。描述了对根生长具有潜在重要性的激素之间的相互作用。这就建立了一个可用于研究非生物胁迫因子对植物激素相关分子机制的影响的框架，其中包括对金属镉、铜和锌对植物激素和根发育的影响的有限了解。
Plant survival under abiotic stress conditions requires morphological and physiological adaptations. Adverse soil conditions directly affect root development, although the underlying mechanisms remain largely to be discovered. Plant hormones regulate normal root growth and mediate root morphological responses to abiotic stress. Hormone synthesis, signal transduction, perception and cross-talk create a complex network in which metal stress can interfere, resulting in root growth alterations. We focus on Arabidopsis thaliana, for which gene networks in root development have been intensively studied, and supply essential terminology of anatomy and growth of roots. Knowledge of gene networks, mechanisms and interactions related to the role of plant hormones is reviewed. Most knowledge has been generated for auxin, the best-studied hormone with a pronounced primary role in root development. Furthermore, cytokinins, gibberellins, abscisic acid, ethylene, jasmonic acid, strigolactones, brassinosteroids and salicylic acid are discussed. Interactions between hormones that are of potential importance for root growth are described. This creates a framework that can be used for investigating the impact of abiotic stress factors on molecular mechanisms related to plant hormones, with the limited knowledge of the effects of the metals cadmium, copper and zinc on plant hormones and root development included as case example.