Diversity and Antimicrobial Activity of Actinomycetes from Fecal Sample of Rhinoceros Beetle Larvae

장수풍뎅이 유충의 분변에 존재하는 방선균의 다양성 및 항균활성

  • Lee, Hye-Won (Division of Agricultural Microbiology, National Academy of Agricultural Science, RDA) ;
  • Ahn, Jae-Hyung (Division of Agricultural Microbiology, National Academy of Agricultural Science, RDA) ;
  • Kim, Minwook (Department of Biology, Kyung Hee University) ;
  • Weon, Hang-Yeon (Division of Agricultural Microbiology, National Academy of Agricultural Science, RDA) ;
  • Song, Jaekyeong (Division of Agricultural Microbiology, National Academy of Agricultural Science, RDA) ;
  • Lee, Sung-Jae (Department of Biology, Kyung Hee University) ;
  • Kim, Byung-Yong (Division of Agricultural Microbiology, National Academy of Agricultural Science, RDA)
  • 이혜원 (농촌진흥청 국립농업과학원 농업미생물과) ;
  • 안재형 (농촌진흥청 국립농업과학원 농업미생물과) ;
  • 김민욱 (경희대학교 생물학과) ;
  • 원항연 (농촌진흥청 국립농업과학원 농업미생물과) ;
  • 송재경 (농촌진흥청 국립농업과학원 농업미생물과) ;
  • 이성재 (경희대학교 생물학과) ;
  • 김병용 (농촌진흥청 국립농업과학원 농업미생물과)
  • Received : 2013.06.11
  • Accepted : 2013.06.25
  • Published : 2013.06.30


Actinomycetes produce diverse secondary metabolites which have the primary importance in medicine, agriculture and food production, and key to this is their ability to interact with other organisms in natural habitats. In this study, we have investigated the taxonomical and functional diversity of actinomycetes in fecal sample of rhinoceros beetle larvae (Allomyrina dichotoma L.) by using culture-dependent and -independent approaches. For the culture-independent approach, the community DNA was extracted from the sample and 16S rRNA genes of actinomycetes were amplified using actinomycetes-specific PCR primers. Thirty-seven clones were classified into 15 genera and 24 species of actinomycetes. For the culture-dependent approach, 53 strains were isolated from larval feces, of which 27 isolates were selected based on morphological characteristics. The isolates were classified into 4 genera and 14 species, and 24 isolates (89%) were identified as the genus Streptomyces. Many of the representative isolates had antimicrobial activities against plant pathogenic fungi and Gram-positive bacteria. In addition, most of the isolates (78%) showed biochemical properties to hydrolyze cellulose and casein. The results demonstrated that diverse and valuable actinomycetes could be isolated from insect fecal samples, indicating that insect guts can be rich sources for novel bioactive compounds.


Supported by : 국립농업과학원


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