Auxin is one of the most important plant growth hormones, playing a crucial role in development as well as in stress responses. Auxin biosynthesis and signaling pathway comprises a series of events including auxin perception by the receptor, activation, and function of auxin response factors and control by auxin repressors. All these factors are regulated by several different microRNAs during leaf, flower and fruit development, anther development, nodulation, lateral and adventitious root development, potato tuber development as well as during heat stress, submergence, boron toxicity, aluminium stress responses, etc., as depicted in the available literature. In this review a thorough study on miRNA-mediated regulation of auxin biosynthesis and signaling has been done in various plant species. The data gathered can be utilized to point out the particular miRNA-mediated regulation module which can be utilized to modulate the expression of the miRNA and thereby modulation of the auxin pathway. Information in this review would be beneficial to utilize the miRNA expression to generate the protocol for engineering plants with altered auxin signaling pathway to obtain better yield and improved stress tolerance.

中文翻译：

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植物发育和逆境响应过程中miRNA介导的生长素信号通路调控

生长素是最重要的植物生长激素之一，在发育和应激反应中起着至关重要的作用。生长素生物合成和信号通路包括一系列事件，包括受体对生长素的感知、生长素反应因子的激活和功能以及生长素阻遏物的控制。所有这些因素在叶、花和果实发育、花药发育、结瘤、侧根和不定根发育、马铃薯块茎发育以及热胁迫、淹没、硼毒性、铝胁迫反应等过程中都受到几种不同的 microRNA 的调控，如现有文献中所述。在这篇综述中，已经在各种植物物种中对 miRNA 介导的生长素生物合成和信号传导进行了彻底的研究。收集的数据可用于指出特定的 miRNA 介导的调节模块，该模块可用于调节 miRNA 的表达，从而调节生长素途径。本综述中的信息将有利于利用 miRNA 表达生成具有改变的生长素信号通路的工程植物的方案，以获得更好的产量和提高的胁迫耐受性。