Department of Biotechnology, Yeungnam University, Gyeongsan, Gyeongbuk 38541, Korea.
Int J Mol Sci. 2020 Jan 17;21(2):621. doi: 10.3390/ijms21020621.
Plants as immovable organisms sense the stressors in their environment and respond to them by means of dedicated stress response pathways. In response to stress, jasmonates (jasmonic acid, its precursors and derivatives), a class of polyunsaturated fatty acid-derived phytohormones, play crucial roles in several biotic and abiotic stresses. As the major immunity hormone, jasmonates participate in numerous signal transduction pathways, including those of gene networks, regulatory proteins, signaling intermediates, and proteins, enzymes, and molecules that act to protect cells from the toxic effects of abiotic stresses. As cellular hubs for integrating informational cues from the environment, jasmonates play significant roles in alleviating salt stress, drought stress, heavy metal toxicity, micronutrient toxicity, freezing stress, ozone stress, CO stress, and light stress. Besides these, jasmonates are involved in several developmental and physiological processes throughout the plant life. In this review, we discuss the biosynthesis and signal transduction pathways of the JAs and the roles of these molecules in the plant responses to abiotic stresses.
植物作为不能移动的生物体，能够感知环境中的胁迫因素，并通过专门的应激反应途径对其作出响应。在应对胁迫时，茉莉酸（茉莉酸、其前体和衍生物）作为一类多不饱和脂肪酸衍生的植物激素，在生物和非生物胁迫中发挥着至关重要的作用。作为主要的免疫激素，茉莉酸参与了许多信号转导途径，包括基因网络、调节蛋白、信号中间体以及能够保护细胞免受非生物胁迫毒性影响的蛋白质、酶和分子。作为整合环境信息线索的细胞枢纽，茉莉酸在缓解盐胁迫、干旱胁迫、重金属毒性、微量元素毒性、冰冻胁迫、臭氧胁迫、CO 胁迫和光胁迫方面发挥着重要作用。除此之外，茉莉酸还参与了植物整个生命周期中的几个发育和生理过程。在本文综述中，我们讨论了 JAs 的生物合成和信号转导途径以及这些分子在植物应对非生物胁迫中的作用。
