TURGOR REGULATION AND CYTOPLASMIC FREE CA-2+ IN THE ALGA LAMPROTHAMNIUM

被引：39

作者：

OKAZAKI, Y

YOSHIMOTO, Y

HIRAMOTO, Y

TAZAWA, M

机构：

[1] UNIV TOKYO, FAC SCI, DEPT BIOL, HONGO 7-3-1, TOKYO 113, JAPAN

[2] TOKYO INST TECHNOL, BIOL LAB, TOKYO 152, JAPAN

[3] NATL INST BASIC BIOL, DEPT CELL BIOL, OKAZAKI, AICHI 444, JAPAN

来源：

PROTOPLASMA | 1987年 / 140卷 / 01期

关键词：

D O I：

10.1007/BF01273256

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

In internodal cells of Lamprothamnium succinctum, turgor regulation in response to hypotonic treatment is inhibited by lowering external Ca2+ concentration ([Ca2+]e) from 3.9 (normal) to 0.01 (low) mM. In order to clarify whether a change in the cytoplasmic free Ca2+ concentration ([Ca2+]c) is involved in turgor regulation, the Ca2+ sensitive protein aequorin was injected into the cytoplasm of internodal cells. A large transient light emission was observed upon hypotonic treatment under normal [(Ca2+]e but not under low [Ca2+]e. Thus hypotonic treatment induces a transient increase in [Ca2+]e under normal [Ca2+]c but not under low [Ca2+]c.

引用

页码：67 / 71

页数：5

共 23 条

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