Modification of the redox state of cytochrome c oxidase of rice due to certain stress treatments.
Indian J Biochem Biophys
;
1992 Oct; 29(5): 425-7
Article
Dans Anglais
| IMSEAR
| ID: sea-26879
ABSTRACT
The redox state of cytochrome alpha 3 during in situ respiration of leaves of 20-day-old rice seedlings was assessed by in vivo aerobic assay of nitrate reductase, after 1 min exposure to carbon monoxide. Different stress treatments like water and salt stresses, disintegration of leaf tissues and darkness modified the redox state of cytochrome c oxidase. The dark treatment altered the redox state of cytochrome oxidase from reduced to the oxidized state, as judged by its reaction with CO in CO-sensitive rice cultivar. The water and salt stresses as well as the disintegration of leaf tissue on the contrary altered cytochrome oxidase from the oxidized to its reduced state in CO-insensitive cultivars; probably by changing the cellular integrity, turgidity and structure of mitochondrial membrane, and also due to decreased mitochondrial energization.
Texte intégral:
Disponible
Indice:
IMSEAR (Asie du Sud-Est)
Sujet Principal:
Concentration osmolaire
/
Oxydoréduction
/
Oryza
/
Monoxyde de carbone
/
Eau
/
Cinétique
/
Chlorure de sodium
/
Complexe IV de la chaîne respiratoire
/
Aérobiose
/
Obscurité
langue:
Anglais
Texte intégral:
Indian J Biochem Biophys
Année:
1992
Type:
Article
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