Role of farnesyltransferase in ABA regulation of guard cell anion channels and plant water loss.
Journal Article (Journal Article)
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.
Full Text
Duke Authors
Cited Authors
- Pei, ZM; Ghassemian, M; Kwak, CM; McCourt, P; Schroeder, JI
Published Date
- October 1998
Published In
Volume / Issue
- 282 / 5387
Start / End Page
- 287 - 290
PubMed ID
- 9765153
Pubmed Central ID
- 9765153
Electronic International Standard Serial Number (EISSN)
- 1095-9203
International Standard Serial Number (ISSN)
- 0036-8075
Digital Object Identifier (DOI)
- 10.1126/science.282.5387.287
Language
- eng