Diverse effects of formate on the assimilatory metabolism of nitrate and nitrite in Rhizobium.
J Biosci
;
1984 June; 6(2): 181-184
Article
in English
| IMSEAR
| ID: sea-160270
ABSTRACT
Two strains οf Rhizobium, cowpea Rhizobium 32H1 and Rhizobium japonicum CB 1809, showed a marked stimulation in growth on addition of formate to the minimal medium containing nitrate as the sole source of nitrogen. The amount of accumulated nitrite and specific nitrate reductase activity was much higher in cultures supplemented with formate than in the control medium. In contrast, growth, consumption of nitrite and specific nitrite reductase activity in minimal medium + nitrite was greatly reduced by the addition of formate. A chlorate resistant mutant (Chl-16) was isolated spontaneously which contained a nitrite reductase which was not inhibited by formate. The results suggest that formate serves as an electron donor for nitrate reductase and inhibits nitrite assimilation in Rhizobium.
Full text:
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Index:
IMSEAR (South-East Asia)
Language:
English
Journal:
J Biosci
Year:
1984
Type:
Article
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