Staphylococcus aureus is a serious human pathogen that employs a number of virulence factors as part of its pathogenesis. The purpose of the present study was to explore marine bacteria as a source of compounds that modulate virulence gene expression in S. aureus. During the global marine Galathea 3 expedition, a strain collection was established comprising bacteria that express antimicrobial a...

Adaptive radiations are important drivers of niche filling, since they rapidly adapt a single clade of organisms to ecological opportunities. Although thought to be common for animals and plants, adaptive radiations have remained difficult to document for microbes in the wild. Here we describe a recent adaptive radiation leading to fine-scale ecophysiological differentiation in the degradation ...

Marine biology,marine ecology,Phytoplankton, marine algae, zooplankton, nekton, benthos, corals and coral reefs, ecology, zoogeography systematics, primary production experimental work on ecosystem including energy flow at different trophic levels, population dynamics theoretical models, recycling of matter, influence environmental factors metabolic activity, microbiology, mariculture propagati...

Vibrio fischeri induces both anaerobic respiration and bioluminescence during symbiotic infection. In many bacteria, the oxygen-sensitive regulator FNR activates anaerobic respiration, and a preliminary study using the light-generating lux genes from V. fischeri MJ1 cloned in Escherichia coli suggested that FNR stimulates bioluminescence. To test for FNR-mediated regulation of bioluminescence a...

Integrative and conjugative elements (ICEs) are mobile genetic elements that play a key role in bacterial adaptation. Such elements are found in almost every bacterial genera and species, and often code for adaptive traits conferring selective advantages to their host. ICEs maintain by integrating into and replicating along with a replicon of the host genome. ICEs can propagate by conjugative t...

To estimate the phylogenetic position of each bacterial species, ACKNOWLEDGEMENTS the nucleotide sequences of the 5S nbosomal RNAs from four Gram-negative marine eubacteria, Vibrio adaptatus, V. This work was supported in part by the following grants; NSF cyclosites, V. hoUisae and V. neocistes were determined by #BSR-8806509, EPA #CR812246 and ONR chemical and enzymatic methods (1). The 5S rRN...