A group of moderately halophilic bacteria able to degrade aromatic organic compounds contaminating hypersaline habitats in southern Spain have been isolated and characterized. The taxonomic position of these strains was determined using phenotypic, phylogenetic and genotypic methods. The G + C content of their DNA ranged from 61.0 to 62.9 mol%. DNA-DNA hybridization studies showed that they con...

Striking spatial patterns in stable isotope ratios (isoscapes) and elemental ratios (stoichioscapes) of seagrass leaves and the water column nutrients indicate general Plimitation of both water column and benthic primary productivity on the Bermuda Platform, and they highlight the role of the Bermuda Islands as a source of N and P. We found consistent differences among the four seagrass species...

Two complementary aspects of the thermodynamics of the photoactive yellow protein (PYP), a new type of photoreceptor that has been isolated from Ectothiorhodospira halophila, have been investigated. First, the thermal denaturation of PYP at pH 3.4 has been examined by global analysis of the temperature-induced changes in the UV-VIS absorbance spectrum of this chromophoric protein. Subsequently,...

Molecular dynamics simulation techniques, together with semiempirical PM3 calculations, have been used to investigate the effect of photoisomerization of the 4-hydroxy-cinnamic acid chromophore on the structural properties of the photoactive yellow protein (PYP) from Ectothiorodospira halophila. In this bacteria, exposure to blue light leads to a negative photoactic response. The calculations s...

We attempted to breed phage-insensitive strains of Tetragenococcus halophila D10. Phage contact during selection initially caused the occurrence of lysogeny. Subsequently, we screened phage-insensitive mutants by replica plating so that mutant cells did not touch the phage during selection. Two strains were selected from about 150,000 strains. They grew normally in soy sauce mash (moromi) in th...

Halophila johnsonii is an endangered seagrass species that restricted to the southeast coast of Florida, United States. Its taxonomic status has been called into question, in particular, given close morphological and genetic similarity H. widely distributed morphologically variable ovalis , which largely Indo-Pacific region. While a relationship uncontroversial, it remains uncertain whether rep...