A novel Gram-negative, aerobic, motile, rod-shaped, beige-pigmented bacterium, strain ARW1-2F2, was isolated from a seawater sample collected from Roscoff, France. Strain ARW1-2F2 was catalase-negative and oxidase-positive, and grew under mesophilic, neutrophilic and halophilic conditions. The 16S rRNA sequences revealed that strain ARW1-2F2 was closely related to LFT 1.
View Article and Find Full Text PDFNovel high-throughput cultivation techniques create a demand to pre-select strains for in-depth follow-up studies. We report a workflow to identify promising producers of novel natural products by systematically characterizing their metabolomes. For this purpose, 60 strains from four phyla (Proteobacteria, Bacteroidetes, Actinobacteria and Firmicutes) comprising 16 novel species and six novel genera were cultivated from marine and terrestrial sources.
View Article and Find Full Text PDFA Gram-negative, aerobic, non-motile bacterium, designated strain KC90BT, was isolated from the surface of a cell of the marine diatom Thalassiosira delicatula. The bacterial cells were pleomorphic and formed very small, beige colonies on marine agar. Optimal growth was obtained at 25 °C, at pH 6.
View Article and Find Full Text PDFSoil is composed of a mosaic of different rocks and minerals, usually considered as an inert substrata for microbial colonization. However, recent findings suggest that minerals, in soils and elsewhere, favour the development of specific microbial communities according to their mineralogy, nutritive content, and weatherability. Based upon recent studies, we highlight how bacterial communities are distributed on the surface of, and in close proximity to, minerals.
View Article and Find Full Text PDFUnlike farmland, forests growing on acidic soils are among the terrestrial ecosystems that are the least influenced or amended by man. Forests which developed on acidic soils are characterized by an important stock of inorganic nutrients entrapped in poorly weatherable soil minerals. In this context, the mineral-weathering process is of great importance, since such minerals are not easily accessible to tree roots.
View Article and Find Full Text PDF