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      Draft Genome Sequence of Acinetobacter sp. Strain BMW17, a Cellulolytic and Plant Growth-Promoting Bacterium Isolated from the Rhizospheric Region of Phragmites karka of Chilika Lake, India


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          We report the 3.16 Mb draft genome of Acinetobacter sp. strain BMW17, a Gram-negative bacterium in the class of Gammaproteobacteria, isolated from the rhizospheric region of Phragmites karka, an invasive weed in Chilika Lake, Odisha, India. The strain BMW17 T is capable of degrading cellulose and is also an efficient plant growth promoter that can be useful for various phytoremedial and commercial applications.

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          Molecular and phenotypic characterization of Acinetobacter strains able to degrade diesel fuel.

          Characterization of bacterial communities in oil-contaminated soils and evaluation of their degradation capacities may serve as a guide for improving remediation of such environments. Using physiological and molecular methods, the aim of this work was to characterize 17 Acinetobacter strains (13 species) able to use diesel fuel oil as sole carbon and energy source. The strains were first tested for their ability to grow on different alkanes on minimal medium containing high NaCl concentrations. The envelope hydrophobicity of each strain was assessed by microbial adhesion to the hydrocarbon test (MATH) when grown in LB medium or minimal medium containing succinate or diesel fuel. Most strains were hydrophobic both in LB and minimal medium, except for strain Acinetobacter venetianus VE-C3 that was hydrophobic only in minimal medium. Furthermore, two A. venetianus strains, RAG-1(T) and LUH 7437, and strain ATCC 17905 (genomic species 13BJ) displayed biosurfactant activity. The alkM gene encoding alkane hydroxylase was detected in the chromosome of the 15 strains by PCR amplification, sequencing and Southern blot analysis. Phenotype microarray analysis performed on the five A. venetianus strains revealed that they differentially used purines as N-source and confirmed that they are unable to use carbohydrates. Copyright © 2011 Institut Pasteur. Published by Elsevier Masson SAS. All rights reserved.
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            Characterization of diverse Acinetobacter isolates for utilization of multiple aromatic compounds.

            This study demonstrates the multiple catabolic capacities of lab isolates belonging to the genus Acinetobacter. Thirty-one Acinetobacter strains were screened initially for their capacity to utilize ten substrates that includes monocyclic, heterocyclic and polycyclic aromatic compounds. These bacteria were isolated from activated biomass of different effluent treatment plants (ETPs) treating wastewater generated at different industries and selected based on partial sequence data of the 16S rRNA gene. Of these 31 isolates, preliminary plate assay results showed eleven isolates that could utilize multiple substrates. Analytical studies demonstrated multiple degradation of hydrocarbons dibenzothiophene, fluorene, dibenzofuran, benzyl sulfide, and sodium benzoate by two isolates, HPC311 and HPC159.
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              Metabolic activity and phylogenetic diversity of reed (Phragmites australis) periphyton bacterial communities in a hungarian shallow soda lake.

              In the present study, the species composition and potential metabolic activities of bacterial communities of reed Phragmites australis (Cav.) (Trin. ex Steudel) periphyton from Lake Velencei were studied by cultivation-based and metabolic fingerprinting methods. Serially diluted spring biofilm samples were used to test the community-level physiological profiling (CLPP) using BIOLOG microplates, and for plating onto different media. On the basis of their morphological, biochemical, and physiological test results, 173 strains were clustered by numerical analysis. Representatives of amplified ribosomal DNA restriction analysis (ARDRA) groups were identified by their 16S rDNA sequence comparison. Based on the results of the CLPP investigations, regional differences were detected among the utilized substrate numbers and types, parallel with the increase in incubation time. The phenotypic test results of the strains showed considerable variability with respect to the sampling sites and the media used for cultivation. The most frequently isolated strains were identified as members of genera Agrobacterium, Pseudomonas (P. anguilliseptica, P. marginalis, P. alcaligenes, P. fragi) with aerobic or facultative anaerobic respiratory metabolism, and the species Aeromonas sobria and A. veronii with strong facultative fermentative metabolism. Other strains were identified as Gram-positive Arthrobacter, Bacillus, and Kocuria species. The rarely isolated strains were members of beta-Proteobacteria (Acidovorax, Delftia, Hydrogenophaga, and Rhodoferax), gamma-Proteobacteria (Psychrobacter and Shewanella), low G + C Gram-positives (Brevibacillus, Paenibacillus, and Exiguobacterium) and high G + C Gram-positives (Aureobacterium and Microbacterium).

                Author and article information

                Genome Announc
                Genome Announc
                Genome Announcements
                American Society for Microbiology (1752 N St., N.W., Washington, DC )
                30 June 2016
                May-Jun 2016
                : 4
                : 3
                [a ]School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India
                [b ]Wetland Research and Training Center, Chilika Development Authority, Department of Forest and Environment, Bhubaneswar, Odisha, India
                [c ]Bionivid Technology Private Limited, Kasturi Nagar, Bangalore, India
                Author notes
                Address correspondence to Vishakha Raina, vishakha.raina@ 123456gmail.com .
                Copyright © 2016 Mishra et al.

                This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license.

                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 11, Pages: 2, Words: 1273
                This research received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors.
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                May/June 2016



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