Dreyer Anna, Dietz Karl-Josef
Department of Biochemistry and Physiology of Plants, Faculty of Biology, University of Bielefeld, 33615 Bielefeld, Germany.
Antioxidants (Basel). 2018 Nov 21;7(11):169. doi: 10.3390/antiox7110169.
Cold temperatures restrict plant growth, geographical extension of plant species, and agricultural practices. This review deals with cold stress above freezing temperatures often defined as chilling stress. It focuses on the redox regulatory network of the cell under cold temperature conditions. Reactive oxygen species (ROS) function as the final electron sink in this network which consists of redox input elements, transmitters, targets, and sensors. Following an introduction to the critical network components which include nicotinamide adenine dinucleotide phosphate (NADPH)-dependent thioredoxin reductases, thioredoxins, and peroxiredoxins, typical laboratory experiments for cold stress investigations will be described. Short term transcriptome and metabolome analyses allow for dissecting the early responses of network components and complement the vast data sets dealing with changes in the antioxidant system and ROS. This review gives examples of how such information may be integrated to advance our knowledge on the response and function of the redox regulatory network in cold stress acclimation. It will be exemplarily shown that targeting the redox network might be beneficial and supportive to improve cold stress acclimation and plant yield in cold climate.
低温限制植物生长、植物物种的地理分布范围以及农业生产活动。本综述探讨的是高于冰点温度的冷胁迫，通常将其定义为冷害胁迫。它聚焦于低温条件下细胞的氧化还原调控网络。活性氧（ROS）在这个由氧化还原输入元件、信号传递分子、作用靶点和传感器组成的网络中充当最终电子受体。在介绍了包括烟酰胺腺嘌呤二核苷酸磷酸（NADPH）依赖性硫氧还蛋白还原酶、硫氧还蛋白和过氧化物还原酶等关键网络组成部分之后，将描述用于冷胁迫研究的典型实验室实验。短期转录组和代谢组分析有助于剖析网络组成部分的早期反应，并补充有关抗氧化系统和ROS变化的大量数据集。本综述举例说明了如何整合此类信息，以增进我们对氧化还原调控网络在冷胁迫适应中的反应和功能的了解。将示例性地表明，针对氧化还原网络可能有利于并有助于改善冷胁迫适应能力以及寒冷气候下的植物产量。
