A MECHANOSENSITIVE CHANNEL IN WHOLE CELLS AND IN MEMBRANE PATCHES OF THE FUNGUS UROMYCES

被引：152

作者：

ZHOU, XL

STUMPF, MA

HOCH, HC

KUNG, C

机构：

[1] UNIV WISCONSIN,MOLEC BIOL LAB,MADISON,WI 53706

[2] UNIV WISCONSIN,DEPT GENET,MADISON,WI 53706

[3] CORNELL UNIV,NEW YORK STATE AGR EXPT STN,DEPT PLANT PATHOL,GENEVA,NY 14456

来源：

SCIENCE | 1991年 / 253卷 / 5026期

关键词：

D O I：

10.1126/science.1716786

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Bean leaf stomata provide a topographical signal that induces germlings of the phytopathogen Uromyces appendiculatus to develop specialized infection structures. Protoplasts from germ tubes of this fungus, when examined with patch-clamp electrodes, displayed the Activities of a 600-picosiemen mechanosensitive ion channel. This channel passes a variety of cations, including Ca2+, and is blocked by Gd3+ at 50 micromolar. This channel could transduce the membrane stress induced by the leaf topography into an influx of ions, including Ca2+, that may trigger differentiation.

引用

页码：1415 / 1417

页数：3

共 21 条

[1] APPRESSORIUM FORMATION IN RESPONSE TO TOPOGRAPHICAL SIGNALS BY 27 RUST SPECIES [J].