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- W2978262451 endingPage "110298" @default.
- W2978262451 startingPage "110298" @default.
- W2978262451 abstract "Phospholipase D (PLD) hydrolyzes the phosphodiester bond of glycerophospholipids to yield phosphatidic acid (PA) and a free headgroup. PLDs are important for plant growth, development, and responses to external stresses. However, their roles in triacylglycerol (TAG) synthesis are still unclear. Here, we report that a soybean (Glycine max) PLDγ (GmPLDγ) is involved in glycerolipid turnover and seed oil production. GmPLDγ was targeted to mitochondria and exhibited PLD activity that was activated by oleate and phosphatidylinositol 4,5-bisphosphate [PtdIns(4,5)P2]. Overexpression of GmPLDγ (abbreviated GmPLDγ-OE) in Arabidopsis thaliana resulted in enhanced seed weight, elevated levels of TAGs with 18-, 20-, and 22-carbon fatty acids (FAs), and altered oil-body morphology. Furthermore, the levels of membrane lipids in vegetative tissues decreased significantly, whereas no overt changes were found in mature seeds except for a decrease in the digalactosyldiacylglycerol (DGDG) level in the GmPLDγ-OE lines. Additionally, the expression of genes involved in glycerolipid metabolism was significantly upregulated in developing siliques in GmPLDγ-OE lines. Together, our data indicate a regulatory role for GmPLDγ in TAG synthesis and fatty-acid remodeling, highlighting the importance of mitochondria-directed glycerophospholipid homeostasis in seed oil accumulation." @default.
- W2978262451 created "2019-10-10" @default.
- W2978262451 creator A5011363875 @default.
- W2978262451 creator A5012544488 @default.
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- W2978262451 creator A5033978689 @default.
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- W2978262451 creator A5078128438 @default.
- W2978262451 creator A5080893873 @default.
- W2978262451 creator A5088647716 @default.
- W2978262451 date "2020-01-01" @default.
- W2978262451 modified "2023-10-16" @default.
- W2978262451 title "Overexpression of soybean GmPLDγ enhances seed oil content and modulates fatty acid composition in transgenic Arabidopsis" @default.
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- W2978262451 doi "https://doi.org/10.1016/j.plantsci.2019.110298" @default.