Abstract
Some endophytic actinomycetes (120) were isolated from the roots ofAlpinia galanga. Identification of these endophytes was based on their morphology and amino acid composition of the whole-cell extract. Most isolates were classified aStreptomyces sp. (82), with the remainder belonging toNocardia sp. (11),Microbispora sp. (3) andMicromonospora sp. (2). Eight isolates were unclassified and 14 were lost during subculture. The strain identified as endophyticStreptomyces sp. Tc022 strongly inhibitedColletotrichum musae andCandida albicans. This endophyte was cultured, the agar was extracted with organic solvent and the extract was purified on a column of silica gel to give a major component, which was identified to be actinomycin D on the basis of spectroscopic dat Actinomycin D showed antifungal activity againstColletotrichum musae andCandida albicans with the MIC of 10 and 20 mg ml−1, respectively.
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Taechowisan, T., Wanbanjob, A., Tuntiwachwuttikul, P. et al. Identification ofStreptomyces sp. Tc022, an endophyte inAlpinia galanga, and the isolation of actinomycin D. Ann. Microbiol. 56, 113–117 (2006). https://doi.org/10.1007/BF03174991
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DOI: https://doi.org/10.1007/BF03174991