Stable-carbon-isotope composition of fatty acids in hydrothermal vent mussels containing methanotrophic and thiotrophic bacterial endosymbionts

Article Abstract:

A study was conducted to evaluate the presence of methanotrophic and thiotrophic bacterial endosymbionts in the tissues of a hydrothermal vent mussel. The method utilized was a fatty acid biomarker analysis compounded with gas chromatography-isotope ratio mass spectrometry. Results confirmed the presence of monounsaturated fatty acids in the gill, posterior adductor and mantle tissues. Stable-carbon-isotope compositions of fatty acids in the three tissues were from -24.9% to -34.9% which covers the range predicted for both thiotroph- and methanotroph-based nutrition.

Research, Hydrothermal vent ecology, Hydrothermal vent ecosystems, Monounsaturated fatty acids, Mussels

---

Effect of selected polysaccharide-producing soil bacteria on hyperhydricity control in oregano tissue cultures

Article Abstract:

Polysaccharide-producing soil rhizosphere bacteria, Pseudomonas mucidolens and another Pseudomonas sp. prevent hyperhydricity in soil and improve acclimation of oregano tissue cultures. Excess hydration along with poor lignification causes hyperhydricity and results in poor regeneration of plants. The oregano-bacterium interaction reveals the underlying mechanism of hyperhydricity. These bacterial strains better than other Pseudomonas strains for commercial applications.

Observations, Pseudomonas, Tissue culture, Oregano, Plant-water relationships

---

Intraspecies variability of cellular fatty acids among soil and intestinal strains of Desulfovibrio desulfuricans

Article Abstract:

Soil and human intestinal strains of Desulfovibrio desulfuricans show differences in their cellular fatty acid profiles. The soil strains show heterogeneity in their individual fatty acid patterns despite the identical laboratory cultivation conditions, whereas the intestinal strains are more homogenous with almost identical patterns. The intestinal strains contain a higher ratio of saturated, as compared to unsaturated, fatty acids.

Biological diversity, Biodiversity, Fatty acids, Sulfur bacteria, Fatty acid synthesis

Similar abstracts:

• Abstracts: Detection of novel methanotrophs using phylogenetic and functional gene probes after methane enrichment. A new chitosanase gene from a Nocardioides sp. is a third member of glycosyl hydrolase family 46
• Abstracts: Molecular analysis of the composition of the bifidobacterial and lactobacillus microflora of humans. Molecular rearrangement of longifolene by Arthrobacter ilicis T2
• Abstracts: Beta-cell-specific inactivation of the mouse Ipf1/Pdx1 gene results in loss of the beta-cell phenotype and maturity onset diabetes
• Abstracts: Influence of water chlorination on the counting of bacteria with DAPI (4',6-diamidino-2-phenylindole)
• Abstracts: The gut of the soil microarthropod Folsomia candida (Collembola) is a frequently changeable but selective habitat and a vector for microorganisms

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.