Different Effects of Phospholipase Dζ2 and Non-Specific Phospholipase C4 on Lipid Remodeling and Root Hair Growth in Arabidopsis Response to Phosphate Deficiency
February 2018
in “
The Plant Journal
”
TLDR PLDζ2 and NPC4 have different roles in lipid changes and root hair growth in Arabidopsis under low phosphate, with PLDζ2 reducing root hair growth and NPC4 promoting it.
The study examined the roles of phospholipase Dζ2 (PLDζ2) and non-specific phospholipase C4 (NPC4) in lipid remodeling and root hair growth in Arabidopsis under phosphate deficiency. It found that PLDζ2 and NPC4 had distinct and non-overlapping functions, with PLDζ2 primarily promoting primary root growth and acting as a negative regulator of root hair density and length, while NPC4 was more involved in promoting root hair elongation. The double knockout mutant npc4pldζ2 showed impaired root growth and altered lipid remodeling. The study concluded that these enzymes contributed to lipid remodeling and root hair growth, with their effects being compensatory in early phosphate deprivation stages and leading to changes in lipid biosynthesis during prolonged phosphate limitation.
