Exploring Jasmonates in the Hormonal Network of Drought and Salinity Responses.
Exploring Jasmonates in the Hormonal Network of Drought and Salinity Responses.
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DOI：
10.3389/fpls.2015.01077
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发表时间：
2015
影响因子：
5.6
通讯作者：
Nick P
中科院分区：
文献类型：
--
作者：
Riemann M;Dhakarey R;Hazman M;Miro B;Kohli A;Nick P
当前和未来的粮食安全是一个关键问题，气候变化对农业的影响使这一问题更加复杂。植物对逆境的感知和信号转导引起基因或蛋白质表达的变化，从而引起代谢和生理反应。植物激素在将不同的上游信号整合成不同的适应性输出中起着核心作用，例如离子通道活性的变化、蛋白质修饰、蛋白质降解和基因表达。植物激素的生物合成和信号转导以及植物激素间的相互作用已被广泛研究，但茉莉酸酯在非生物胁迫下的作用仍不完全清楚。虽然茉莉酸的生物合成，串扰和信号转导的大部分方面似乎是相似的生物和非生物胁迫，新的方面已经出现，似乎是独特的非生物胁迫响应。本文综述了茉莉酸类化合物在干旱和盐碱胁迫下的作用。茉莉酸的生物合成和信号转导途径与脱落酸（阿坝）的串扰是特别考虑到由于良好的，在非生物胁迫下的阿坝的核心作用。同样，茉莉酸信号与其他植物激素的串扰的积累证据被认为是一个综合的植物激素反应的重要因素。最后，蛋白质的翻译后修饰，这也可以发生没有从头转录，治疗相对于其影响植物激素的生物合成，信号和串扰。为了培育适应气候变化的作物品种，需要对分子过程进行综合理解，以调节和调整网络的特定节点，从而积极影响胁迫耐受性。
Present and future food security is a critical issue compounded by the consequences of climate change on agriculture. Stress perception and signal transduction in plants causes changes in gene or protein expression which lead to metabolic and physiological responses. Phytohormones play a central role in the integration of different upstream signals into different adaptive outputs such as changes in the activity of ion-channels, protein modifications, protein degradation, and gene expression. Phytohormone biosynthesis and signaling, and recently also phytohormone crosstalk have been investigated intensively, but the function of jasmonates under abiotic stress is still only partially understood. Although most aspects of jasmonate biosynthesis, crosstalk and signal transduction appear to be similar for biotic and abiotic stress, novel aspects have emerged that seem to be unique for the abiotic stress response. Here, we review the knowledge on the role of jasmonates under drought and salinity. The crosstalk of jasmonate biosynthesis and signal transduction pathways with those of abscisic acid (ABA) is particularly taken into account due to the well-established, central role of ABA under abiotic stress. Likewise, the accumulating evidence of crosstalk of jasmonate signaling with other phytohormones is considered as important element of an integrated phytohormonal response. Finally, protein post-translational modification, which can also occur without de novo transcription, is treated with respect to its implications for phytohormone biosynthesis, signaling and crosstalk. To breed climate-resilient crop varieties, integrated understanding of the molecular processes is required to modulate and tailor particular nodes of the network to positively affect stress tolerance.