Huazhong Agricultural University, Wuhan, China.
Plant Cell Environ. 2010 Apr;33(4):627-35. doi: 10.1111/j.1365-3040.2009.02087.x. Epub 2009 Nov 24.
The activity of phospholipase D (PLD) in plants increases under different hyperosmotic stresses, such as dehydration, drought, and salinity. Recent results begin to shed light onto the involvement of PLD in response to water deficits and salinity. Different PLDs have unique and overlapping functions in these responses. PLDalpha1 promotes stomatal closure and reduces water loss. PLDalpha1 and PLDdelta are involved in seedling tolerance to salt stress. PLDalpha3 and PLDepsilon enhance plant growth and hyperosmotic tolerance. The different PLDs regulate the production of phosphatidic acid (PA) that is a key class of lipid mediators in plant response to environmental stresses. Further studies on the upstream regulators that activate different PLDs and the downstream effectors of PLDs and PA have the potential to unveil the linkage between the stimulus perception at the cell membrane to intracellular responses to drought and salinity stresses.
植物中的磷脂酶 D（PLD）活性在不同的高渗胁迫下增加，如脱水、干旱和盐胁迫。最近的研究结果开始揭示 PLD 在应对水分亏缺和盐胁迫中的作用。不同的 PLD 在这些反应中具有独特和重叠的功能。PLDalpha1 促进气孔关闭并减少水分流失。PLDalpha1 和 PLDdelta 参与幼苗对盐胁迫的耐受。PLDalpha3 和 PLDepsilon 增强植物生长和高渗耐受性。不同的 PLD 调节磷脂酸（PA）的产生，PA 是植物响应环境胁迫的关键脂质介质之一。进一步研究激活不同 PLD 的上游调节剂以及 PLD 和 PA 的下游效应物，有可能揭示细胞膜刺激感知与干旱和盐胁迫的细胞内响应之间的联系。
