Abstract
OsKAT2 is the prevailing functional inward rectifier potassium channels in rice guard cell
Plant signaling & behavior, Vol.8(12), pp.e26643-e26643
01/01/2013
DOI: 10.4161/psb.26643
PMCID: PMC4091219
PMID: 24103920
Abstract
AtKAT1 plays roles as a major channel to uptake K+ in guard cell when stomata open in dicot model plant Arabidopsis. In a recent publication, we isolated 3 KAT-like potassium channels in rice. We expressed them in CHO cell to identify electrophysiological characteristics of the channels. OsKAT2 showed much bigger inwardly rectifying potassium channel activities among them. The histochemical X-glu staining of transgenic rice leaf blades expressing beta-glucuronidase fused with OsKAT2 promoter showed that the OsKAT2 is dominantly expressed in rice guard cell. These findings indicate that OsKAT2 may be a functional ortholog of AtKAT1 in rice. Thus this gene will be the prime target for engineering the guard cell movement to improve drought tolerance in monocot plants, including most major crops.
Details
- Title: Subtitle
- OsKAT2 is the prevailing functional inward rectifier potassium channels in rice guard cell
- Creators
- Hyunsik Hwang - Rural Dev Adm, Natl Acad Agr Sci, Dept Mol Breeding, Suwon, South KoreaJin-Young Yoon - Rural Development AdministrationHana Cho - Sungkyunkwan UniversityBeom-Gi Kim - Rural Development Administration
- Resource Type
- Abstract
- Publication Details
- Plant signaling & behavior, Vol.8(12), pp.e26643-e26643
- Publisher
- Taylor & Francis
- DOI
- 10.4161/psb.26643
- PMID
- 24103920
- PMCID
- PMC4091219
- ISSN
- 1559-2316
- eISSN
- 1559-2324
- Number of pages
- 2
- Grant note
- PJ00802107 / Next-Generation BioGreen 21 Program (Plant Molecular Breeding Center) of the Rural Development Administration of Korea PJ008598 / Research Program for Agricultural Science and Technology Development of National Academy of Agricultural Science
- Language
- English
- Date published
- 01/01/2013
- Academic Unit
- Cardiovascular Medicine; Internal Medicine
- Record Identifier
- 9984363275702771
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