The relationship between hydrogen metabolism, sulfate reduction and nitrogen fixation in sulfate reducers

Autor: Jean LeGall, René Toci, Yves Berlier, G. Fauque, Gerard Denariaz, Paul A. Lespinat
Rok vydání: 1987
Předmět:
Zdroj: Journal of Industrial Microbiology. 1:383-388
ISSN: 1476-5535
0169-4146
DOI: 10.1007/bf01569336
Popis: Hydrogenase and nitrogenase activities of sulfate-reducing bacteria allow their adaptation to different nutritional habits even under adverse conditions. These exceptional capabilities of adaptation are important factors in the understanding of their predominant role in problems related to anaerobic metal corrosion. Although the D2−H+ exchange reaction indicated thatDesulfovibrio desulfuricans strain Berre-Sol andDesulfovibrio gigas hydrogenases were reversible, the predominant activity in vivo was hydrogen uptake. Hydrogen production was restricted to some particular conditions such as sulfate or nitrogen starvation. Under diazotrophic conditions, a transient hydrogen evolution was followed by uptake when dinitrogen was effectively fixed. In contrast, hydrogen evolution proceeded when acetylene was substituted as the nitrogenase substrate. Hydrogen can thus serve as an electron donor in sulfate reduction and nitrogen metabolism.
Databáze: OpenAIRE