Involvement of oxyradicals in promotion/inhibition of expansion growth in cucumber cotyledons.
Indian J Exp Biol
;
2005 Oct; 43(10): 910-5
Artigo
em Inglês
| IMSEAR
| ID: sea-58206
ABSTRACT
Cytokinin-induced expansion growth of cucumber cotyledons and its interaction with UV-B (280-320 nm) was studied with reference to oxyradicals. UV-B radiation enhanced the level of oxyradicals in the cotyledons measured by EPR spectroscopy. Cytokinin promoted expansion growth was inhibited by UV-B radiation. Cytokinins reduced the level of oxyradicals in dark grown cotyledons, while promoting growth. Overproduction of oxyradicals by UV-B could not be fully accounted for the inhibition of growth of cotyledons, since quenching of radicals by cytokinins did not fully restore inhibition of growth.
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Assunto principal:
Oxigênio
/
Sementes
/
Fatores de Tempo
/
Raios Ultravioleta
/
Espectroscopia de Ressonância de Spin Eletrônica
/
Cucumis sativus
/
Citocininas
/
Relação Dose-Resposta a Droga
/
Radicais Livres
Idioma:
Inglês
Revista:
Indian J Exp Biol
Ano de publicação:
2005
Tipo de documento:
Artigo
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