Departamento de Botânica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil.
Departamento de Botânica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil.
Plant Physiol Biochem. 2021 Dec;169:322-332. doi: 10.1016/j.plaphy.2021.11.023. Epub 2021 Nov 16.
Carbon monoxide (CO), nitric oxide (NO) and hydrogen sulfide (HS) are gasotransmitters known for their roles in plant response to (a)biotic stresses. The crosstalk between these gasotransmitters and potassium ions (K) has received considerable attention in recent years, particularly due to the dual role of K as an essential mineral nutrient and a promoter of plant tolerance to abiotic stress. This review brings together what it is known about the interplay among NO, CO, HS and K in plants with focus on the response to high salinity. Some findings obtained for plants under water deficit and metal stress are also presented and discussed since both abiotic stresses share similarities with salt stress. The molecular targets of the gasotransmitters NO, CO and HS in root and guard cells that drive plant tolerance to salt stress are highlighted as well.
一氧化碳（CO）、一氧化氮（NO）和硫化氢（HS）是已知的气体信号分子，它们在植物应对（生物和非生物）胁迫的反应中发挥作用。近年来，这些气体信号分子与钾离子（K）之间的串扰受到了相当多的关注，这主要是因为 K 既是一种必需的矿物质营养元素，也是促进植物耐受非生物胁迫的因素。本综述汇集了目前关于植物中 NO、CO、HS 和 K 之间相互作用的知识，重点关注对高盐胁迫的反应。还介绍和讨论了在植物水分亏缺和金属胁迫下获得的一些发现，因为这两种非生物胁迫与盐胁迫有相似之处。还强调了气体信号分子 NO、CO 和 HS 在根和保卫细胞中的分子靶标，这些靶标驱动植物对盐胁迫的耐受。
