Members of the family Ectothiorhodospiraceae form a distinct lineage from Chromatiaceae on the basis of 16S rRNA gene sequence analysis (Imhoff and Süling, 1996). Among the 13 genera recognized in the family Ectothiorhodospiraceae, only 4 genera (Ectothiorhodosinus, Ectothiorhodospira, Halorhodospira and Thiorhodospira) are represented by members of true phototrophic species (http://www.bacteri...

The photoactive yellow protein (pyp) gene has been isolated from Rhodobacter sphaeroides by probing with a homologous PCR-product. A sequence analysis shows that this pyp gene encodes a 124 AA protein with 48% identity to the three known PYPs. Downstream from pyp, a number of adjacent open reading frames were identified, including a gene encoding a CoA-ligase homologue (pCL). This latter protei...

Prioritizing efforts for conserving rare and threatened species with limited past data and lacking population estimates is predicated on robust assessments of their occupancy rates. This is particularly challenging for elusive, long-lived and wide-ranging marine mammals. In this paper we estimate trends in long-term (over 50 years) occupancy, persistence and extinction of a vulnerable and data-...

lnstitut fur Meereskunde an der Universitat Kiel, Abteilung Marine Mikrobiologie, Dusternbrooker Weg 20, D-24105 Kiel, Germany Sequences of the 16s rDNA from all available type strains of Chromatium species have been determined and were compared to those of other Chromatiaceae, a few selected Ectothiorhodospiraceae and Escherichia coli. The clear separation of Ectothiorhodospiraceae and Chromat...