Soil enzymes are central to ecosystem processes because they mediate numerous reactions that essential in biogeochemical cycles. However, how soil enzyme activities will respond global warming is uncertain. We reviewed the literature on mechanisms linking temperature effects and microbial communities, outlined a conceptual overview these changes may influence carbon fluxes terrestrial ecosystem...

The enhancement of phenanthrene catabolism in soils amended with lignocellulosic waste material (spent brewery grains) was investigated. were pre-treated five white-rot fungi ( Phanerochaete chrysosporium , Trametes versicolor Irpex lateus Pleurotus ostreatus, and Bjerkandera adusta ). changes the kinetics 14 C-phenanthrene mineralisation (lag phases, fastest rates overall extents) measured ino...

Regulation of the biosynthesis of the six cellulases comprising the cellulolytic system of the thermophilic soil bacterium Thermomonospora fusca ER1 was studied. The levels of the individual enzymes produced on different noninducing and inducing carbon sources were determined. The lowest level of cellulase synthesis (3 nM) was observed with xylose as a carbon source, and the highest level (247 ...

Pre-plant fumigation of agricultural soils with a combination of methyl bromide (MeBr) and chloropicrin (CP) to control nematodes, soilborne pathogens and weeds has been a common practice in strawberry (Fragaria X ananassa Duchesne) production since the 1960s. MeBr will be phased out by 2005, but little is known about the impacts of alternative fumigants on soil microbial processes. We investig...

The diversity and load of heterotrophic bacteria and fungi associated with the mangrove soil from Suva, Fiji Islands, was determined by using the plate count method. The ability of the bacterial isolates to produce various hydrolytic enzymes such as amylase, gelatinase and lipase were determined using the plate assay. The heterotrophic bacterial load was considerably higher than the fungal load...

Polycyclic aromatic hydrocarbons are organic compounds with highly toxic, carcinogenic, and mutagenic properties, which adversely affect the basic biological parameters of the soil, including the count of microorganisms, and the enzymatic activity. In addition to disturbances to the biological activity of the soil, PAHs may also exhibit toxic effects on plants. In view of the above, the study i...