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All Journal E-Bisnis : Jurnal Ilmiah Ekonomi dan Bisnis Indonesian Journal of Biotechnology Soeropati: Journal of Community Service
M. Mustofa
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Religion Arts Humanities Biochemistry, Genetics & Molecular Biology Economics, Econometrics & Finance Environmental Science Immunology & microbiology Materials Science & Nanotechnology Social Sciences Other

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Journal : Indonesian Journal of Biotechnology

 1 
An Actinomycetes Producing Anticandida Isolated from Cajuput Rhizosphere: Partial Identification of Isolates and Amplification of pks-I genes A. Alimuddin; Widya Asmara; Jaka Widada; M. Mustofa; Reni Nurjasmi
Indonesian Journal of Biotechnology Vol 15, No 1 (2010)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (234.627 KB) | DOI: 10.22146/ijbiotech.7817

Abstract

Actinomycetes have been the most prolific producer of various kinds of antifungal metabolites, and many of them are described as being produced by polyketide synthetases (pks). We present strain of Actinomycetes producing anticandida isolated from rhizosphere plant for amplification of Pks-I genes. The isolate was obtained from Wanagama I Forest UGM Yogyakarta. Gene of seven isolates, from total of 173 isolates, were amplified using degenerate primer to detect the presence of pks genes. One strain that is named Streptomyces sp. GMR-22 was partialy identified as anticandida producing actinomycete. The strain shown the strongest activity against Candida albicans. Based on bioautography assay, one spot active with Rf 0.57 was appeared as bright yellow by cerrium sulphate but it was and not visible on UV254 and 366 lights. Key words : pks genes, anticandida, Streptomyces sp GMR-22, rep-PCR, cajuput rhizosphere
Antifungal Production of a Strain of Actinomycetes spp Isolated from the Rhizosphere of Cajuput Plant: Selection and Detection of Exhibiting Activity Against Tested Fungi A. Alimuddin; Jaka Widada; Widya Asmara; M. Mustofa
Indonesian Journal of Biotechnology Vol 16, No 1 (2011)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (703.56 KB) | DOI: 10.22146/ijbiotech.7829

Abstract

Actinomycetes are bacteria known to constitute a large part of the rhizosphere microbiota. Their isolation is an important step for screening of new bioactive compounds. Culturable actinomycetes populations from cajuput plant rhizosphere soils in Wanagama I Forest UGM Yogyakarta were collected to study about their antifungal activity. Among 17 of a total 43 isolates that showed activity were screened for producing antifungi substances. Screening for antifungal activity of isolates were performed with dual culture bioassay in vitro. One isolate that was designated as Streptomyces sp.GMR-22 was the strongest against all tested fungi and appeared promising for a sources of antifungal. Culture’s supernatant and mycelia were extracted with chloroform, ethyl acetate and methanol, respectively. Antifungal activity of crude extracts was tested by diffusion method against tested fungi. The result indicates that isolates of actinomycetes from cajuput plant rhizosphere could be an interesting sources of antifungal bioactive substances.
Co-Authors A. Alimuddin Hasan Syaiful Rizal Iwan Koerniawan JAKA WIDADA Reni Nurjasmi Widya Asmara