College of Life Sciences, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China.
College of Life Sciences, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China.
J Genet Genomics. 2022 Aug;49(8):726-734. doi: 10.1016/j.jgg.2022.05.003. Epub 2022 May 25.
Eukaryotic cells are confined by membranes that create hydrophobic barriers for substance and information exchange between the inside and outside of the cell. These barriers are formed by assembly of lipids and protein in aqueous environments. Lipids not only serve as building blocks for membrane construction, but also possess regulatory functions in cellular activities. These regulatory lipids are non-uniformly distributed in membrane systems; their temporal and spatial accumulation in specific membranes decodes environmental cues and changes cellular activity accordingly. Phosphoinositides (PIs) are phospholipids that exert regulatory effects. In recent years, research on PIs roles in regulating plant growth, development, and responses to environmental stress is increasing. Several reviews have been published on the composition of PIs, intermolecular transferring of PIs by lipid kinases (phosphatases) or PI-PLCs, subcellular localization, and specially their functions in plant developments. Herein, we review the crucial regulatory functions of PIs in plant stress responses, with a particular focus on PIs involved in membrane trafficking.
真核细胞被膜所限制，这些膜在细胞内外物质和信息交换中形成疏水性屏障。这些屏障是由脂质和蛋白质在水相环境中的组装形成的。脂质不仅作为膜结构的构建块，而且在细胞活动中具有调节功能。这些调节脂质在膜系统中分布不均匀；它们在特定膜中的时间和空间积累解码环境线索，并相应地改变细胞活性。磷酸肌醇（PIs）是发挥调节作用的磷脂。近年来，关于 PIs 在调节植物生长、发育和对环境胁迫响应中的作用的研究正在增加。已经发表了几篇关于 PIs 组成、脂质激酶（磷酸酶）或 PI-PLC 介导的 PIs 分子间转移、亚细胞定位以及它们在植物发育中的特殊功能的综述。本文综述了 PIs 在植物胁迫响应中的关键调节功能，特别关注涉及膜运输的 PIs。
