STRUCTURAL POLARITY IN THE CHARA RHIZOID - A REEVALUATION

被引：20

作者：

KISS, JZ ^{[1
]}

STAEHELIN, LA ^{[1
]}

机构：

[1] UNIV COLORADO, DEPT MOLEC CELLULAR & DEV BIOL, BOULDER, CO 80309 USA

来源：

AMERICAN JOURNAL OF BOTANY | 1993年 / 80卷 / 03期

关键词：

D O I：

10.2307/2445350

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The Chara rhizoid is a useful model system to study gravitropism since all phases of gravitropism occur in a single cell. Despite years of study, a complete description of the distinctive ultrastructure of Chara rhizoids is not available. Therefore, in this paper, we reevaluate the ultrastructural features of vertically grown rhizoids, which have a structural polarity consisting of seven distinct zones. We also characterize the apical vesicles and the cell wall in these rhizoids by using antibodies against pectic polysaccharides. These studies demonstrate that the cell wall consists of two pectinaceous domains and that a distinct population of apical vesicles contain methyl esterified pectin.

引用

页码：273 / 282

页数：10

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