Division of Plant Sciences, College of Agriculture, Food and Natural Resources, and Interdisciplinary Plant Group, Christopher S. Bond Life Sciences Center University of Missouri, 1201 Rollins St, Columbia, MO, 65201, USA.
Department of Surgery, University of Missouri School of Medicine, Christopher S. Bond Life Sciences Center University of Missouri, 1201 Rollins St, Columbia, MO, 65211, USA.
Plant J. 2021 Jan;105(2):459-476. doi: 10.1111/tpj.15010. Epub 2020 Oct 30.
Each year, abiotic stress conditions such as drought, heat, salinity, cold and particularly their different combinations, inflict a heavy toll on crop productivity worldwide. The effects of these adverse conditions on plant productivity are becoming ever more alarming in recent years in light of the increased rate and intensity of global climatic changes. Improving crop tolerance to abiotic stress conditions requires a deep understanding of the response of plants to changes in their environment. This response is dependent on early and late signal transduction events that involve important signaling molecules such as reactive oxygen species (ROS), different plant hormones and other signaling molecules. It is the integration of these signaling events, mediated by an interplay between ROS and different plant hormones that orchestrates the plant response to abiotic stress and drive changes in transcriptomic, metabolic and proteomic networks that lead to plant acclimation and survival. Here we review some of the different studies that address hormone and ROS integration during the response of plants to abiotic stress. We further highlight the integration of ROS and hormone signaling during early and late phases of the plant response to abiotic stress, the key role of respiratory burst oxidase homologs in the integration of ROS and hormone signaling during these phases, and the involvement of hormone and ROS in systemic signaling events that lead to systemic acquired acclimation. Lastly, we underscore the need to understand the complex interactions that occur between ROS and different plant hormones during stress combinations.
每年，非生物胁迫条件，如干旱、热、盐、冷，特别是它们的不同组合，都会对全球作物生产力造成严重影响。近年来，由于全球气候变化的速度和强度不断增加，这些不利条件对植物生产力的影响变得更加令人担忧。提高作物对非生物胁迫条件的耐受性需要深入了解植物对环境变化的反应。这种反应依赖于早期和晚期的信号转导事件，涉及到重要的信号分子，如活性氧（ROS）、不同的植物激素和其他信号分子。正是这些信号事件的整合，通过 ROS 和不同植物激素之间的相互作用来协调植物对非生物胁迫的反应，并驱动转录组、代谢组和蛋白质组网络的变化，从而导致植物的适应和存活。在这里，我们回顾了一些不同的研究，这些研究涉及植物对非生物胁迫反应中激素和 ROS 的整合。我们进一步强调了 ROS 和激素信号在植物对非生物胁迫的早期和晚期阶段的整合，呼吸爆发氧化酶同源物在这些阶段中 ROS 和激素信号整合中的关键作用，以及激素和 ROS 在导致系统获得适应的系统信号事件中的参与。最后，我们强调需要了解 ROS 和不同植物激素在胁迫组合过程中发生的复杂相互作用。
