A myosin inhibitor impairs auxin-induced cell division

被引：17

作者：

Holweg, C ^{[1
]}

Honsel, A ^{[1
]}

Nick, P ^{[1
]}

机构：

[1] Univ Freiburg, Inst Biol 3, D-79104 Freiburg, Germany

来源：

PROTOPLASMA | 2003年 / 222卷 / 3-4期

关键词：

actin; 2,3-butanedione monoxime; cell division; cell plate; myosin; tobacco;

D O I：

10.1007/s00709-003-0025-3

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The role of myosins for auxin-induced cell division was probed using the inhibitor 2,3-butanedione monoxime in the tobacco cell line VBI-0, where cell elongation and division are axially aligned under the control of auxin. A morphometric analysis revealed that cell division is blocked in a dose-dependent manner, whereas cell expansion continued. In addition, the polarity of terminal cells was impaired resulting in malformed, pear-shaped cells. Early effects of the inhibitor are aberrant features of the cytoarchitecture including a block of vesicle transport, a diffuse broadening of cross walls, and the disorganization of the actin cytoskeleton. The findings are discussed with respect to a possible role of myosins as link between vesicle flow and signal control of cell division.

引用

页码：193 / 204

页数：12

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[1]

[Anonymous], PLANT SOILS

[2] Polar transport of auxin: carrier-mediated flux across the plasma membrane or neurotransmitter-like secretion? [J].