Nine bacterial strains growing on inulin as the sole carbon and energy source were isolated from soil samples by enrichment culture on a mineral medium. Four of the strains were thermophilic and belong to the genus Bacillus. The thermophilic strains synthesized a beta-fructosidase that was active on both inulin and sucrose. The presence of inulin in the culture medium is necessary for enzyme sy...

BACKGROUND One of the main concerns related to the increasing use of sewage sludge in the soil is the possible presence of excess nutrients, which could cause environmental problems and detrimental effects on the soil microorganisms, considered essential to soil nutrient cycling. Thus, the objective of this work was to evaluate the microbial biomass and activity and some chemical characteristic...

Effects of four fungi and six rhizobacteria isolates from the rhizosphere of vegetable crops was studied for suppression of root knot nematode, Meloidogyne incognita and wilt fungus, Fusarium oxysporum f. sp. lycopersici on tomato in laboratory and pot culture experiment. All the isolates were isolated by serial dilution and cultured in liquid protein supplemented broth medium and culture filtr...

UNLABELLED To better characterize the bacterial community members capable of biosurfactant production on leaves, we distinguished culturable biosurfactant-producing bacteria from nonproducers and used community sequencing to compare the composition of these distinct cultured populations with that from DNA directly recovered from leaves. Communities on spinach, romaine, and head lettuce leaves w...

plexity of soil affects the probability of bacteria encountering appropriate substrates or other bacteria. The Soil bacteria function in the three-dimensional space in heterogequantitative assessment of bacteria in soil is mostly conneous soil complex and their activities depend in part on encountering substrates at the microbial scale. The bacterial density per gram of fined to population dens...

Dent corn Andisol at the Hokkaido University Shizunai Livestock Experimental Farm actively emits nitrous oxide (N2O). In order to screen for culturable and active N2O emitters with high N2O emission potential, soft gel medium containing excess KNO3 was inoculated with soil suspensions from farm soil samples collected at different land managements. Dominant bacterial colonies were searched for a...