OsKAT2 is the prevailing functional inward rectifier potassium channels in rice guard cell.
Plant Signal Behav
; 8(12): e26643, 2013.
Article
em En
| MEDLINE
| ID: mdl-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 ß-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.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Proteínas de Plantas
/
Oryza
/
Canais de Potássio Corretores do Fluxo de Internalização
/
Estômatos de Plantas
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
Plant Signal Behav
Assunto da revista:
BOTANICA
/
FISIOLOGIA
Ano de publicação:
2013
Tipo de documento:
Article