| RRC ID |
4016
|
| Author |
Park HY, Seok HY, Park BK, Kim SH, Goh CH, Lee BH, Lee CH, Moon YH.
|
| Title |
Overexpression of Arabidopsis ZEP enhances tolerance to osmotic stress.
|
| Journal |
Biochem Biophys Res Commun
|
| Abstract |
Zeaxanthin epoxidase (ZEP) is an enzyme important in ABA biosynthesis and in the xanthophyll cycle. ABA, a plant hormone, is a key molecule that regulates plant responses to abiotic stress, such as drought and salinity, and is required for stress tolerance. To investigate the biological roles of the Arabidopsis thaliana ZEP gene (AtZEP) in stress response, we generated transgenic plants overexpressing the AtZEP gene and analyzed their responses to salt and drought stresses. AtZEP-overexpressing plants exhibited more vigorous growth under high salt and drought treatments than wild-type plants. In addition to enhanced de novo ABA biosynthesis, AtZEP-overexpressing plants also exhibited much higher expression of the endogenous stress-responsive genes RD29A and Rab18 than wild-type plants under salt stress. Moreover, the stomatal aperture of the AtZEP-overexpressing plants was smaller than wild-type plants after exposure to light. Our results therefore indicated that AtZEP plays important roles in response to osmotic stress.
|
| Volume |
375(1)
|
| Pages |
80-5
|
| Published |
2008-10-10
|
| DOI |
10.1016/j.bbrc.2008.07.128
|
| PII |
S0006-291X(08)01461-7
|
| PMID |
18680727
|
| MeSH |
Arabidopsis / enzymology
Arabidopsis / genetics
Arabidopsis / physiology*
Arabidopsis Proteins / genetics
Arabidopsis Proteins / physiology*
Osmotic Pressure
Oxidoreductases / genetics
Oxidoreductases / physiology*
Plant Stomata / enzymology
Plant Stomata / genetics
Plant Stomata / physiology
Plants, Genetically Modified / enzymology
Plants, Genetically Modified / genetics
Sodium Chloride / metabolism*
Water / metabolism*
|
| IF |
2.985
|
| Times Cited |
71
|
|
WOS Category
|
BIOPHYSICS
BIOCHEMISTRY & MOLECULAR BIOLOGY
|
| Resource |
| Arabidopsis / Cultured plant cells, genes |
pda08179 |
