Antarctic Soils Bacteria Isolated from Fuel-Contaminated Free-Living Heterotrophic Nitrogen-Fixing
نویسندگان
چکیده
منابع مشابه
Fate of Nitrogen-Fixing Bacteria in Crude Oil Contaminated Wetland Ultisol
The effect of crude oil on the growth of legumes (Calopogonium muconoides and Centrosema pubescens) and fate of nitrogen-fixing bacteria in wetland ultisol was investigated using standard cultural techniques. The results revealed observable effects of oil on soil physico-chemistry, plant growth and nodulation as well as on densities of heterotrophic, hydrocarbonoclastic and nitrogen fixing bact...
متن کاملIsolation and Characterisation of Diazotrophic Bacteria from Rhizosphere of different Rice Cultivars of South Assam, India
Free living heterotrophic bacteria were isolated from the rhizosphere of 10 local and cultivated varieties of rice grown in Karimganj district of South Assam. Among the 25 isolates, 11 isolates withplant growth promoting activity were identified based on phenotypic and 16S rDNA sequence analysis. The strains were identified as Shingomonasa zotifigens, Pseudomonas putida, Stenotrophomonas maltop...
متن کاملDiversity and activity of free-living nitrogen-fixing bacteria and total bacteria in organic and conventionally managed soils.
Agricultural soils are heterogeneous environments in which conditions affecting microbial growth and diversity fluctuate widely in space and time. In this study, the molecular ecology of the total bacterial and free-living nitrogen-fixing communities in soils from the Nafferton Factorial Systems Comparison (NFSC) study in northeast England were examined. The field experiment was factorial in de...
متن کاملEffect of Abandonment on Diversity and Abundance of Free-Living Nitrogen-Fixing Bacteria and Total Bacteria in the Cropland Soils of Hulun Buir, Inner Mongolia
In Inner Mongolia, steppe grasslands face desertification or degradation because of human over activity. One of the reasons for this condition is that croplands have been abandoned after inappropriate agricultural management. The soils in these croplands present heterogeneous environments in which conditions affecting microbial growth and diversity fluctuate widely in space and time. In this st...
متن کاملIsolation and Characterization of Phenanthrene Degrading Bacteria from Diesel Fuel-Contaminated Antarctic Soils
Antarctica is an attractive target for human exploration and scientific investigation, however the negative effects of human activity on this continent are long lasting and can have serious consequences on the native ecosystem. Various areas of Antarctica have been contaminated with diesel fuel, which contains harmful compounds such as heavy metals and polycyclic aromatic hydrocarbons (PAH). Bi...
متن کامل