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Cadmium-induced changes in composition and co-metabolism of glycerolipids species in wheat root: Glycerolipidomic and transcriptomic approach

文献类型： 外文期刊

作者： Wu, Songwei 1 ; Hu, Chengxiao 1 ; Wang, Xuemin 3 ; Wang, Yiwen 1 ; Yu, Min 4 ; Xiao, Hongdong 4 ; Shabala, Sergey 4 ; Wu, Kongjie 1 ; Tan, Qiling 1 ; Xu, Shoujun 6 ; Sun, Xuecheng 1 ;

作者机构： 1.Huazhong Agr Univ, Key Lab Arable Land Conservat Middle & Lower Reac, Minist Agr & Rural Affairs, Wuhan 430070, Peoples R China

2.State Environm Protect Key Lab Soil Hlth & Green, Wuhan 430070, Peoples R China

3.Univ Missouri, Dept Biol, St Louis, MO 63121 USA

4.Foshan Univ, Int Res Ctr Environm Membrane Biol, Foshan 528000, Peoples R China

5.Univ Tasmania, Tasmanian Inst Agr, Hobart, Tas 7001, Australia

6.Guangdong Acad Agr Sciencs, Inst Qual Stander & Monitoring Technol Agroprod, Guangzhou 510640, Peoples R China

关键词： Cadmium; Glycerolipidomics; Lipid unsaturation; High abundance glycerolipid species; Ratio of phosphatidylcholine; phosphatidylethanolamine; Lipid co-occurrence; Lipoidase

期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：14.224； 五年影响因子：12.984 ）

ISSN： 0304-3894

年卷期： 2022 年 423 卷

页码：

收录情况： SCI

摘要： Lipids are the structural constituents of cell membranes and play crucial roles in plant adaptation to abiotic stresses. The aim of this study was to use glycerolipidomic and transcriptomic to analyze the changes in lipids metabolism induced by cadmium (Cd) exposure in wheat. The results indicated that Cd stress did not decrease the concentrations of monogalactosyldiacyglycerol (MGDG), phosphatidylcholine (PC), lysophosphatidylcholine (LPC) and phosphatidic acid at 6 h, but decreased digalactosyldoacylglycerol (DGDG), MGDG, PC, phosphati-dylethanolamine (PE), phosphatidylglycerol (PG), phosphatidylserine (PS) and LPC concentrations in wheat root at 24 h. Although the concentrations of highly abundant glycerolipids PC and PE were decreased, the ratios of PC/PE increased thus contributing to wheat adaptation to Cd stress. Cd did not reduce the extent of total lipid unsaturation due to the unchanged concentrations of high abundance species of C36:4, C34:2, C34:3 and C36:6 at 6 h, indicative of their roles in resisting Cd stress. The correlation analysis revealed the glycerolipids species experiencing co-metabolism under Cd stress, which is driven by the activated expression of genes related to glycerolipid metabolism, desaturation and oxylipin synthesis. This study gives insights into the changes of glycerolipids induced by Cd and the roles in wheat adaptation to Cd stress.

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