水稻抗旱机制:miRNA 的作用

Drought Response in Rice: The miRNA Story.

机构信息

School of Environmental and Natural Resource Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Malaysia.

出版信息

Int J Mol Sci. 2019 Aug 1;20(15):3766. doi: 10.3390/ijms20153766.

Abstract

As a semi-aquatic plant, rice requires water for proper growth, development, and orientation of physiological processes. Stress is induced at the cellular and molecular level when rice is exposed to drought or periods of low water availability. Plants have existing defense mechanisms that respond to stress. In this review we examine the role played by miRNAs in the regulation and control of drought stress in rice through a summary of molecular studies conducted on miRNAs with emphasis on their contribution to drought regulatory networks in comparison to other plant systems. The interaction between miRNAs, target genes, transcription factors and their respective roles in drought-induced stresses is elaborated. The cross talk involved in controlling drought stress responses through the up and down regulation of targets encoding regulatory and functional proteins is highlighted. The information contained herein can further be explored to identify targets for crop improvement in the future.

摘要

作为一种半水生植物,水稻的正常生长、发育和生理过程的定向需要水。当水稻受到干旱或水分供应不足时,会在细胞和分子水平上产生胁迫。植物有现有的防御机制来应对胁迫。在这篇综述中,我们通过对 miRNA 在调控水稻干旱胁迫方面的分子研究进行总结,考察了 miRNA 在调控和控制水稻干旱胁迫中的作用,重点是它们在与其他植物系统相比对干旱调控网络的贡献。阐述了 miRNA、靶基因、转录因子及其在干旱诱导胁迫中的各自作用之间的相互作用。强调了通过调控编码调节和功能蛋白的靶基因的上调和下调来控制干旱胁迫反应的串扰。本文所包含的信息可以进一步探索,以确定未来作物改良的目标。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6867/6696311/449cc88f3320/ijms-20-03766-g001.jpg

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