Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Department of Plant Physiology, Friedrich-Schiller-University, 07743 Jena, Germany.
Int J Mol Sci. 2023 Sep 29;24(19):14762. doi: 10.3390/ijms241914762.
The productivity of plants is hindered by unfavorable conditions. To perceive stress signals and to transduce these signals to intracellular responses, plants rely on membrane-bound receptor-like kinases (RLKs). These play a pivotal role in signaling events governing growth, reproduction, hormone perception, and defense responses against biotic stresses; however, their involvement in abiotic stress responses is poorly documented. Plant RLKs harbor an N-terminal extracellular domain, a transmembrane domain, and a C-terminal intracellular kinase domain. The ectodomains of these RLKs are quite diverse, aiding their responses to various stimuli. We summarize here the sub-classes of RLKs based on their domain structure and discuss the available information on their specific role in abiotic stress adaptation. Furthermore, the current state of knowledge on RLKs and their significance in abiotic stress responses is highlighted in this review, shedding light on their role in influencing plant-environment interactions and opening up possibilities for novel approaches to engineer stress-tolerant crop varieties.
植物的生产力受到不利条件的阻碍。为了感知胁迫信号并将这些信号转导为细胞内反应，植物依赖于膜结合的类受体激酶（RLKs）。这些 RLKs 在调控生长、繁殖、激素感知和防御生物胁迫反应的信号事件中起着关键作用；然而，它们在非生物胁迫反应中的参与情况记录甚少。植物 RLKs 具有一个 N 端细胞外结构域、一个跨膜结构域和一个 C 端细胞内激酶结构域。这些 RLKs 的胞外结构域非常多样化，有助于它们对各种刺激做出反应。我们在此根据它们的结构域结构总结 RLKs 的亚类，并讨论关于它们在适应非生物胁迫方面的特定作用的现有信息。此外，本综述强调了 RLKs 的现有知识状态及其在非生物胁迫反应中的重要性，揭示了它们在影响植物-环境相互作用方面的作用，并为工程耐胁迫作物品种提供了新的方法。
