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Diversity of Streptomyces in mangrove ecosystem of Bhitarkanika

Collection of soil samples. Treatment of soil samples and selective isolation of rare actinomycetes. Characterization of non-streptomycete actinomycetes. Screening for bioactivity. Anti-Quorum sensing activity. Table 1 PCR primers used in this study. Open in a separate window. DNA extraction, sequencing and analysis.

Antibacterial activity of soil actinomycetes from the mangrove Avicennia marina

Physico-chemical screening. Anticancer activity. Table 2 Recovery of rare actinomycetes colonies using selective isolation methods. Treatment Media Antibiotics used No. Identification of rare actinomycetes. Table 3 Grouping of isolates into genera on the basis of morphological and chemotaxonomic properties. Genus No. Table 4 Similarity of the rare actinobacterial isolates to the closest cultivated species and their Genbank accession numbers. Isolate Genbank accession No.

Primary screening.

Secondary screening. Physicochemical screening. Table 5 Summary of culturable rare actinomycete isolates from Indian forest soils. Selective isolation of rare actinomycetes. Molecular evolution of aromatic polyketides and comparative sequence analysis of polyketide ketosynthase and 16S ribosomal DNA genes from various Streptomyces species. Appl Environ Microbiol ; 68 — Isolation, identification and molecular characterization of rare actinomycetes from mangrove ecosystem of Nizampatnam.

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Mal J Microbiol ; 8 — Isolation, diversity, and antimicrobial activity of rare actinobacteria from medicinal plants of tropical rain forests in Xishuangbanna, China. Appl Environ Microbiol ; 75 — Antimicrobial activity of rare actinomycetes isolated from natural habitats in Kwa-Zulu-Natal, South Africa. S Afr J Sci ; 5—6 — Sequence-based analysis of secondary-metabolite biosynthesis in marine actinobacteria. Appl Environ Microbiol ; 76 — Ayuso-Sacido A, Genilloud O. Microb Ecol ; 49 — Isolation and screening of Streptomyces from soil of Tunisian oases ecosystem for nonpolyenic antifungal metabolites.

Afr J Biotechnol ; 11 — Chemical screening: A simple approach to visualizing Streptomyces diversity for drug discovery and further research. Res Microbiol ; — Hayakawa M. Studies on the isolation and distribution of rare Actinomycetes in soil. Actinomycetologica ; 22 : 12— Hayakawa M, Nonomura H.

Efficacy of artificial humic acid as a selective nutrient in HV agar used for the isolation of soil actinomycetes. J Fermen Tech ; 65 — Shirling ET, Gottlieb D.

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Methods for characterization of Streptomyces species1. Int J Syst Evol Microbiol ; 16 — Chemical composition of cell-wall preparations from strains of various form-genera of aerobic actinomycetes. Appl Microbiol ; 13 — Simplified approach to identification of aerobic actinomycetes by thin-layer chromatography.

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Appl Microbiol ; 28 — Identification of medically relevant Nocardia species with an abbreviated battery of tests. J Clin Microbiol ; 40 — Studies on antagonistic marine actinomycetes from the Bay of Bengal. World J Microbiol Biotechnol ; 21 — Grammer A. Antibiotic sensitivity and assay test.

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J Microbiol Methods ; Presence of quorum-sensing inhibitor-like compounds from bacteria isolated from the brown alga Colpomenia sinuosa. Lett Appl Microbiol ; 49 — An efficient approach for screening minimal PKS genes from Streptomyces.

Polyaniline phd thesis Phd thesis on streptomyces from mangrove

Edgar RC. Nucleic Acids Res ; 32 — Isolation of aromatic polyketide producing soil Streptomyces using combinatorial screening strategies. OALib J ; 1 :1— Molecular, chemical and biological screening of soil actinomycete isolates in seeking bioactive peptide metabolites.

Iran J Microbiol ; 7 — Immunomodulatory efficacy of nisin—a bacterial lantibiotic peptide. J Pept Sci ; 17 — Baltz RH.

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  3. Bioactive natural products derived from mangrove-associated microbes.
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  6. Renaissance in antibacterial discovery from actinomycetes. Curr Opin Pharmacol ; 8 : — Isolation of new species of the genus Actinomadura on selective media with streptomycin and bruneomycin. Antibiotiki ; 20 — Detection, selective isolation and characterisation of Dactylosporangium strains from diverse environmental samples. Syst Appl Microbiol ; 34 — New methods for the highly selective isolation of Micromonospora and Microbispora from soil. J Ferment Bioengineer ; 72 — Application of phenol pretreatment for the isolation of rare Actinomycetes from Indonesian soil.

    Microbiol Indones ; 6 Screening of actinomycetes strains for the production of antifungal metabolites. Afr J Microbiol Res ; 4 : — Phylogenetic diversity of actinomycetes cultured from coastal multipond solar saltern in Tuticorin, India. Aquat Biosyst ; 8 Population, morphological and chemotaxonomical characterization of diverse rare actinomycetes in the mangrove and medicinal plant rhizosphere.

    Afr J Microbiol Res ; 7 — Actinobacteriological research in India. Indian J Exp Biol ; 51 : — Diversity and antimicrobial activities of actinobacteria isolated from tropical mangrove sediments in Malaysia. Scientific World J ; doi: The spots grey-green fading to yellow were the L-isomer which moved ahead of the amino acid spots appearing red or purple which were meso-DAP. For carbohydrates i.

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    The hydrolysate obtained was transferred to centrifuge tube after cooling. The pH was adjusted to 5 after which the centrifugation was performed. The immense biological diversity in soil has led to the recognition of large number of chemical entities in soil. The soil sample for the work was collected from Western Ghats as they are known to harbour a very rich community of flora and fauna. Hence the soil present there is considered to be rich in various types of microbial flora maintaining the ecological diversity.

    Due to the rainy season at the time of sample collection the amount and the type of microbial diversity present in soil might vary from that found during summer and winter season. The isolated Actinomycetes were found dominant over fungi and bacteria. This variation in www. Hence it can be considered that the Actinomycetes here are might be secreting some secondary metabolites which are inhibitory to bacteria.