NDLI: Molecular characterization of an endophytic Phomopsis liquidambaris CBR-15 from Cryptolepis buchanani Roem. and impact of culture media on biosynthesis of antimicrobial metabolites

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Molecular characterization of an endophytic Phomopsis liquidambaris CBR-15 from Cryptolepis buchanani Roem. and impact of culture media on biosynthesis of antimicrobial metabolites

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Molecular characterization of an endophytic Phomopsis liquidambaris CBR-15 from Cryptolepis buchanani Roem. and impact of culture media on biosynthesis of antimicrobial metabolites

Content Provider	PubMed Central
Author	Rao, H. C. Yashavantha Santosh, Parthasarathy Rakshith, Devaraju Satish, Sreedharamurthy
Abstract	An endophytic fungus Phomopsis liquidambaris CBR-15, was isolated from Cryptolepis buchanani Roem. (Asclepiadaceae) and identified by its characteristic culture morphology and molecular analysis of the ITS region of rDNA and intervening 5.8S rRNA gene. The impact of different culture media on biosynthesis of antimicrobial metabolites was tested by disc diffusion assay. Polyketide synthase gene (PKS) of the endophytic fungus was investigated using three pairs of degenerate primers LC1–LC2c, LC3–LC5c and KS3–KS4c by PCR. TLC-bioautography method was employed to detect the antimicrobial metabolites. Antimicrobial metabolites fractionated with ethyl acetate extract showed significant antimicrobial activity against the test bacteria and fungi. Biosynthesis of antimicrobial metabolites was optimum as depicted by zone of inhibition from ethyl acetate extract cultured in potato dextrose broth. Strain CBR-15 was identified as Phomopsis liquidambaris and PKS genes of the fungus were amplified with LC3–LC5c and KS3–KS4c sets of degenerate primers. These findings suggest that endophytic P. liquidambaris CBR-15 harbor iterative type I fungal PKS gene domain which indicates the biosynthetic potential of endophytic fungi as producers of natural antimicrobial metabolites. The study also demonstrates the utilization and optimization of different culture media which best supports for the biosynthesis of the antimicrobial metabolites from P. liquidambaris.
Related Links	http://dx.doi.org/10.1007/s13205-014-0204-2
Ending Page	173
Page Count	9
Starting Page	165
File Format	PDF
ISSN	2190572X
e-ISSN	21905738
Journal	3 Biotech
Issue Number	2
Volume Number	5
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-04-01
Access Restriction	Open
Rights Holder	Springer Berlin Heidelberg
Subject Keyword	Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Environmental Science Agricultural and Biological Sciences Biotechnology

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Molecular characterization of an endophytic Phomopsis liquidambaris CBR-15 from Cryptolepis buchanani Roem. and impact of culture media on biosynthesis of antimicrobial metabolites