Saraiva, Lígia MFigueiredo, Mafalda Cristina de Oliveira2013-12-172013-12-172013-09http://hdl.handle.net/10362/10883Dissertation presented to obtain the Ph.D degree in Biochemistry, Microbial BiochemistryThe work presented in this dissertation aimed to unravel the defense mechanisms of the anaerobic sulfate reducing bacterium Desulfovibrio (D.) vulgaris Hildenborough against oxidative and nitrosative stresses. Desulfovibrio spp. are usually found in anaerobic niches in soil, marine and fresh waters and sediments, but also in zones periodically exposed to oxygen. Ecologically, Desulfovibrio spp.(...)engdoctoral thesis101284101