Nonspecific phospholipases C3 and C4 interact with PIN-FORMED2 to regulate growth and tropic responses in Arabidopsis
文献类型： 外文期刊
作者： Li, Teng 1 ; Zhang, Shujuan 1 ; Yao, Shuaibing 2 ; Li, Xuebing 1 ; Jia, Qianru 4 ; Yuan, Jingya 1 ; Zhang, Wenhua 1 ; Wang, Xuemin 2 ; Zhang, Qun 1 ;
作者机构： 1.Nanjing Agr Univ, Coll Life Sci, State Key Lab Crop Genet & Germplasm Enhancement &, Nanjing 210095, Peoples R China
2.Univ Missouri, Dept Biol, St Louis, MO 63121 USA
3.Donald Danforth Plant Sci Ctr, St Louis, MO 63132 USA
4.Jiangsu Acad Agr Sci, Inst Ind Crops, Nanjing 210014, Peoples R China
期刊名称：PLANT CELL （ 影响因子：11.6； 五年影响因子：12.9 ）
ISSN： 1040-4651
年卷期： 2024 年 36 卷 6 期
页码：
收录情况： SCI
摘要： The dynamic changes in membrane phospholipids affect membrane biophysical properties and cell signaling, thereby influencing numerous biological processes. Nonspecific phospholipase C (NPC) enzymes hydrolyze common phospholipids to release diacylglycerol (DAG), which is converted to phosphatidic acid (PA) and other lipids. In this study, 2 Arabidopsis (Arabidopsis thaliana) tandemly arrayed genes, NPC3 and NPC4, were identified as critical factors modulating auxin-controlled plant growth and tropic responses. Moreover, NPC3 and NPC4 were shown to interact with the auxin efflux transporter PIN-FORMED2 (PIN2). The loss of NPC3 and NPC4 enhanced the endocytosis and vacuolar degradation of PIN2, which disrupted auxin gradients and slowed gravitropic and halotropic responses. Furthermore, auxin-triggered activation of NPC3 and NPC4 is required for the asymmetric PA distribution that controls PIN2 trafficking dynamics and auxin-dependent tropic responses. Collectively, our study reveals an NPC-derived PA signaling pathway in Arabidopsis auxin fluxes that is essential for fine-tuning the balance between root growth and environmental responses. Nonspecific phospholipases NPC3 and NPC4 interact with the transporter PIN-FORMED2 and regulate auxin transport and signaling.
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