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Bacterial rhodopsin: evidence for a new type of phototrophy in the sea.
The results demonstrate that archaeal-like rhodopsins are broadly distributed among different taxa, including members of the domain Bacteria, and indicate that a previously unsuspected mode of bacterially mediated light-driven energy generation may commonly occur in oceanic surface waters worldwide. Expand
Unsuspected diversity among marine aerobic anoxygenic phototrophs
Aerobic, anoxygenic, phototrophic bacteria containing bacteriochlorophyll a (Bchla) require oxygen for both growth and Bchla synthesis. Recent reports suggest that these bacteria are widelyExpand
Proteorhodopsin phototrophy in the ocean
It is reported that photoactive proteorhodopsin is present in oceanic surface waters and evidence is provided of an extensive family of globally distributed proteorodopsin variants that seem to be spectrally tuned to different habitats—absorbing light at different wavelengths in accordance with light available in the environment. Expand
Assessing diversity and biogeography of aerobic anoxygenic phototrophic bacteria in surface waters of the Atlantic and Pacific Oceans using the Global Ocean Sampling expedition metagenomes.
The results support the notion that marine AAnP populations are complex and dynamic, and compose an important fraction of bacterioplankton assemblages in certain oceanic areas. Expand
Construction and analysis of bacterial artificial chromosome libraries from a marine microbial assemblage.
The results verify the utility of BAC libraries for providing access to the genomes of as yet uncultivated microbial species and investigate the genomic potential and ecological roles of many indigenous microbial species, cultivated or not. Expand
Molecular ecology of nifH genes and transcripts in the eastern Mediterranean Sea.
This preliminary study revealed diverse diazotrophs that possess and express nifH genes, which may support N(2) fixation in the eastern Mediterranean Sea. Expand
Diversification and spectral tuning in marine proteorhodopsins
It is demonstrated that a single amino acid residue at position 105 that functions as a spectral tuning switch and accounts for most of the spectral difference between the two pigment families is the major determinant of proteorhodopsin wavelength regulation in natural marine environments. Expand
New Insights into Metabolic Properties of Marine Bacteria Encoding Proteorhodopsins
It is shown that some proteorhodopsin-containing bacteria possess a retinal biosynthetic pathway and a reverse sulfite reductase operon, employed by prokaryotes oxidizing sulfur compounds, Thus, these novel phototrophs are an unexpectedly large and metabolically diverse component of the marine microbial surface water. Expand
Isolation and characterization of Erythrobacter sp. strains from the upper ocean
Seven strains of marine aerobic anoxygenic phototrophs belonging to the genus Erythrobacter were isolated and required an organic carbon substrate for growth; however, they are able to supplement a significant fraction of their metabolic requirements with photosynthetically derived energy. Expand
Phylogenetic Screening of Ribosomal RNA Gene-Containing Clones in Bacterial Artificial Chromosome (BAC) Libraries from Different Depths in Monterey Bay
A rapid technique was developed (ITS-LH-PCR) to identify and quantify ribosomal RNA (rRNA) gene-containing BAC clones in BAC libraries, and phylogenetic analyses of planktonic marine gamma Proteobacteria, Roseobacter, and Rhodospirillales species were refined. Expand