Role of farnesyltransferase in ABA regulation of guard cell anion channels and plant water loss

被引：308
作者：
Pei, ZM
Ghassemian, M
Kwak, CM
McCourt, P
Schroeder, JI [1 ]
机构：
[1] Univ Calif San Diego, Dept Biol, La Jolla, CA 92093 USA
[2] Univ Calif San Diego, Ctr Mol Genet, La Jolla, CA 92093 USA
[3] Univ Toronto, Dept Bot, Toronto, ON M5S 3B2, Canada
来源：
SCIENCE | 1998年 / 282卷 / 5387期
关键词：
D O I：
10.1126/science.282.5387.287
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：
Desiccation of plants during drought can be detrimental to agricultural production. The phytohormone abscisic acid (ABA) reduces water loss by triggering stomatal pore closure in leaves, a process requiring ion-channel modulation by cytoplasmic proteins. Deletion of the Arabidopsis farnesyltransferase gene ERA1 or application of farnesyltransferase inhibitors resulted in ABA hypersensitivity of guard cell anion-channel activation and of stomatal closing. ERA1 was expressed in guard cells, Double-mutant analyses of era1 with the ABA-insensitive mutants abi1 and abi2 showed that era1 suppresses the ABA-insensitive phenotypes. Moreover, era1 plants exhibited a reduction in transpirational water loss during drought treatment.
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页码：287 / 290
页数：4
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