Oxidative stress management in Dinoroseobacter shibae: Role of extrachromosomal elements and the importance of a small chromid during starvation

ABSTRACT: Aerobic anoxygenic phototrophic bacteria (AAPs) of the Roseobacter group are abundant in the photic zone of the marine environment. Dinoroseobacter shibae, a typical representative, converts light into additional energy that enhances its survival under nutrient-depletion. AAPs produce cytotoxic singlet oxygenunder light exposition, but D. shibae developed mechanisms to counteract the lethal effects of illumination. Recent studies documented a pivotal role of extrachromosomal elements (ECRs) for the ecological fitness of roseobacters, and here we investigated their significance for the adaptation to specific environmental stress. D. shibae possessing five ECRs, i.e. three chromids and two plasmids, was starved for four weeks in the dark and light/dark cycles and the survival strategy was ev

ORGANISM(S): Dinoroseobacter shibae DFL 12 = DSM 16493

SUBMITTER: Juergen Tomasch 

PROVIDER: E-GEOD-62869 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress