Diseases have been the bottle-neck to sustainable development of sturgeon cultivation. Bacterial septicemia that caused mass mortalities of sturgeons is still prevalent in Shanxi and Yunnan provinces in China. The epidemiology and pathogenicity of the disease were investigated. Four predominant isolates of bacteria were isolated from Siberian sturgeons (Acipenser baerii) suffering from bacteria...

The microbial source, variety of producing species, functions and an assortment of bioactivities of metabolites. The probable numbers of metabolites may be discovered in the future, the problems of dereplication of recently isolated compounds as well as the new trends and prediction of the research are also discussed. Ten isolates were isolated from different plant parts (root, stem, leaves) of...

During a metal speciation study, an unusually high retention of lead ·was observed when lead solution was percolated through a column packed with sludge compost obtained from Hampton Roads Sanitation department. A bacterium was isolated from the sludge compost and identified as Bacillus sphaericus using electron microscopy, whole cell fatty acid analysis (Midi System) and Biolog GP Microplate. ...

Imidacloprid is a chloronicotinyl insecticide used widely to control biting and sucking in‐ sects. The over accumulation of this pesticide in environment requires higher awareness about this pesticide. Present investigation was carried out to analyze the effect of imida‐ cloprid on antioxidant enzymes such as superoxide dismutase, catalase and peroxidase in soil isolate Bacillus weihenstephanen...

Lipases are versatile biocatalysts that are used extensively in detergent and pharmaceutical formulations. Lipases have an immense potential for being employed as industrial catalysts for production of fine chemicals. Their superior value arises from specificity and efficacy as compared to chemical catalysts. However new lipases with properties amenable for application in specific industrial pr...

In order to identify the resulted bioactive strain MSB-6 from primary and secondary screening of marine soil samples, various morphological, physiological and biochemical tests are performed. Further confirmation is done by the 16S rRNA gene analysis. The reports confirmed strain MSB-6 as Pseudomonas fluorescens and it is deposited to Gene Bank with the accession number KC852045. It is mesophil...

An atrazine-degrading bacterial culture was isolated from an agricultural soil previously impacted by herbicide spills. The organism was capable of using atrazine under aerobic conditions as the sole source of C and N. Cyanuric acid could replace atrazine as the sole source of N, indicating that the organism was capable of ring cleavage. Ring cleavage was confirmed in 14CO2 evolution experiment...

The ability to isolate an organism in pure culture from the environment is a manageable task for undergraduate students; the identification of that organism requires integration of both genotypic and phenotypic data and illustrates the challenges inherent in contemporary bacterial taxonomy. In this ten-laboratory period series of exercises, students isolate a strain of Pseudomonas from soil and...

Conventional cell-SELEX aims to isolate aptamers to a single unique target bacteria species. We propose a method to isolate single-stranded DNA aptamers that have broad reactivity to multiple bacterial targets belonging to different genera. The key of the proposed method is that targets of interest are changed sequentially at each SELEX round. The general scheme was examined using six bacteria ...

About 45 bacteria, 9 fungi, 3 yeast, and 1 actinobacterium were isolated from plant tissues of tomato screened for their growthpromoting traits antagonistic activity against damping-off fungus Pythium aphanidermatum. The bacterial isolate, Bacillus pumilus TEB10 exhibited pathogen inhibition about 55 79%, while yeast isolate Candida tropicalis TEY1 showed 30 68% in the dual plate inverted assay...