[Yuki Nakamura] A third pathway for membrane lipid remodeling by GDPD6 in phosphate-starved plantsPOST:
Phosphorus is an essential nutrient for plant viability. Under phosphorus starvation, plants may utilize phosphate source by replacing membrane lipids from phospholipids to galactolipids, a process termed membrane lipid remodeling. In addition to the 2 established pathways, we found an involvement of the 3rd pathway mediated by GDPD6. We showed that GDPD6 mediates root growth of phosphate-starved plants via the production of glycerol 3-phosphate (G3P). Our results reveal a novel function of G3P in promoting root growth and an importance of the 3rd pathway in phosphorus-starved plants. The work has been published in a British research journal Journal of Experimental Botany.