A role for actin-driven secretion in auxin-induced growth

被引：49

作者：

Waller, F ^{[1
]}

Riemann, M ^{[1
]}

Nick, P ^{[1
]}

机构：

[1] Univ Freiburg, Inst Biol 2, D-79104 Freiburg, Germany

来源：

PROTOPLASMA | 2002年 / 219卷 / 1-2期

关键词：

actin; auxin; brefeldin A; coleoptile; Zea mays; vesicle transport;

D O I：

10.1007/s007090200007

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

In epidermal cells of Zea mays coleoptiles. actin microfilaments are organized in fine strands during cell elongation, but Lire bundled in response to signals that inhibit growth. This bundling response is accompanied by an increased membrane association of extracted actin. Brefeldin A. an inhibitor of vesicle secretion, increases the membrane association of actin. causes a bundling of cortical actin microfilament. and reduces the sensitivity of cell elongation to auxin. A model is proposed where auxin controls the dynamics of an actin subpopulation that guides vesicles loaded with components of the auxin-signaling machinery towards the cell poles.

引用

页码：72 / 81

页数：10