Cell polarity: ROPing the ends together

被引：41

作者：

Xu, J ^{[1
]}

Scheres, B ^{[1
]}

机构：

[1] Univ Utrecht, Dept Mol Genet, NL-3584 CH Utrecht, Netherlands

来源：

CURRENT OPINION IN PLANT BIOLOGY | 2005年 / 8卷 / 06期

关键词：

D O I：

10.1016/j.pbi.2005.09.003

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Cell polarity plays an important role in plant development, but the mechanisms that first establish polarity cues remain obscure. By contrast, a flurry of information has recently emerged on the elaboration of cell shape from such unknown initial cell-polarity cues. Recent studies suggest that Rho-related GTPases in plants (ROPs), and their effector targets among the ROP-interactive CRIB motif-containing proteins (RICs), mediate two antagonistic pathways that have opposing action on cell polarization. ROP proteins appear to interact directly with upstream regulators of the ARP2/3 complex, which are conserved modulators of the actin cytoskeleton. ROP function is dependent on the class 1 ADP-ribosylation factors (ARFs), which are core components of the vesicle transport machinery that are also involved in the polar localization of PIN-FORMED (PIN) family auxin efflux facilitators.

引用

页码：613 / 618

页数：6

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