In vitro and in vivo nitrogenase activity of Rhizobium mutants and their symbiotic effectivity.
J Biosci
;
1981 Jun; 3(2): 117-124
Artículo
en Inglés
| IMSEAR
| ID: sea-160104
ABSTRACT
A slow growing nitrogen-fixing strain of Vigna radiata var. aureus (mung bean) Rhizobium which expressed nitrogenase activity in a synthetic medium was isolated from its native population. Mutants with decreased and increased nitrogenase activity were derived from this strain by treatment with acridine orange and ethidium bromide. These mutants were tested for symbiotic effectivity in vivo. The effectivity of mutants with decreased nitrogenase activity in the culture medium was lower than the parent strain; however, the effectivity of mutants with higher nitrogenase activity did not increase above that of the parent. This suggests that the plant is perhaps a limiting factor in the full expression of rhizobial nitrogenase in the nodules.
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Índice:
IMSEAR (Asia Sudoriental)
Idioma:
Inglés
Revista:
J Biosci
Año:
1981
Tipo del documento:
Artículo
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