Auxin-regulated cell polarity: an inside job?

被引：52

作者：

Kramer, Eric M. ^{[1
,2
]}

机构：

[1] Bard Coll Simons Rock, Dept Phys, Great Barrington, MA 01230 USA

[2] Univ Nottingham, Ctr Plant Integrat Biol, Nottingham NG7 2RD, England

来源：

TRENDS IN PLANT SCIENCE | 2009年 / 14卷 / 05期

基金：

美国国家科学基金会;

关键词：

PATTERN-FORMATION; PLASMA-MEMBRANE; BINDING PROTEIN; VASCULAR DIFFERENTIATION; PRIMORDIUM DEVELOPMENT; PLANT DEVELOPMENT; ARABIDOPSIS; TRANSPORT; MODEL; CANALIZATION;

D O I：

10.1016/j.tplants.2009.02.005

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Auxin is now known to be a key regulator of polar events in plant cells. The mechanism by which auxin conveys a polar signal to the cell is unknown, but one well-known hypothesis is that the auxin flux across the plasma membrane regulates vesicle trafficking. This hypothesis remains controversial because of its reliance on an as-yet-undiscovered membrane flux sensor. In this article I suggest instead that the polar signal is the auxin gradient within the cell cytoplasm. A computer model of vascular development is presented that demonstrates the plausibility of this scenario. The auxin-binding protein ABP1 might be the receptor for the auxin gradient.

引用

页码：242 / 247

页数：6

共 62 条

[41] Canalization without flux sensors: a traveling-wave hypothesis [J].