植物学报

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生长素输出载体PIN蛋白的质膜定位机制

曹文杰, 李贵生*   

  1. 吉首大学植物资源保护与利用湖南省高校重点实验室, 吉首 416000
  • 收稿日期:2016-01-25 修回日期:2016-02-01 出版日期:2016-03-01 发布日期:2016-03-31
  • 通讯作者: 李贵生 E-mail:guishengl@aliyun.com
  • 基金资助:

    国家自然科学基金(No.31260056)、吉首大学科研启动基金(No.8811910)、湖南省重点学科建设项目(No.JSU0713Z11)和湖南省高校科技创新团队支持计划(No.201208Z02)

Plasma Membrane Positioning Mechanism of Auxin Efflux Carrier PIN Proteins

Wenjie Cao, Guisheng Li*   

  1. Plant Rescources Protection and Utilization Hunan Province College Key Laboratory, Jishou University, Jishou 416000, China
  • Received:2016-01-25 Revised:2016-02-01 Online:2016-03-01 Published:2016-03-31
  • Contact: Guisheng Li E-mail:guishengl@aliyun.com

摘要:

生长素浓度梯度影响植物个体及其器官的形态建成, 而PIN (PIN-FORMED)蛋白决定组织中的生长素流向。细胞质膜的脂筏特性是PIN蛋白在质膜上不均匀分布的基础。与此同时, 网格蛋白介导的胞吞、蛋白质的磷酸化/去磷酸化甚至基因的转录调控影响PIN蛋白的这种极性定位。另外, 在多细胞植物起源之时, PIN蛋白可能经历了从内质网膜定位到质膜定位的转变。

Abstract:

Auxin concentration affects the morphological establishment of plant body and its organs, while PIN (PINFORMED) proteins determine the direction of auxin stream within tissues. The nature of lipid rafts of cellular plasma membrane underlies the uneven distribution of PINs in the plasma membrane. Meanwhile, clathrin-mediated endocytyosis, proteins phosphorylation/dephosphorylation and even genes transcriptional regulation affect this polar location of PINs. Additionally, at the time when multicellular plants emerge, PINs may undergo a transition from endoplasmic reticulum membrane to plasma membrane positioning.

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