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Effect of Bacillus spp. Having Gelatin Decomposing Activity on Root-knot Nematode, Meloidogyne incognita on Pepper

젤라틴 분해력이 있는 Bacillus균의 고추 고구마뿌리혹선충에 미치는 영향

  • Kim, Jin Han (Natural Product Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB)) ;
  • Park, Chan Sun (Natural Product Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB)) ;
  • Kim, Young-Ho (Kroea Stevia Research Institute) ;
  • Kim, Yu Ri (Natural Product Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB)) ;
  • Lee, Seung Woong (Natural Product Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB)) ;
  • Rho, Mun Chual (Natural Product Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB))
  • 김진한 (한국생명공학연구원 천연물소재연구센터) ;
  • 박찬선 (한국생명공학연구원 천연물소재연구센터) ;
  • 김영호 (한국스테비아(주)) ;
  • 김유리 (한국생명공학연구원 천연물소재연구센터) ;
  • 이승웅 (한국생명공학연구원 천연물소재연구센터) ;
  • 노문철 (한국생명공학연구원 천연물소재연구센터)
  • Received : 2016.10.14
  • Accepted : 2016.11.29
  • Published : 2016.12.31

Abstract

This study investigated the decomposing activities on gelatin and egg sac of root-knot nematode (Meloidogyne incognita). Ten Bacillus isolates (KRB-1~10) isolated from the soils of Mt. Naejang. Among them, KRB-5, 9, and 10 showed decomposing activities, and identified as Bacillus subtilis KRB-5, Bacillus amyloliquefaciens KRB-9, and KRB-10 by 16S rRNA sequence analysis, respectively. Under pot experiments using pepper, 100-fold diluted culture broth of three isolates reduced the number of egg sac on roots collected 60 days and 90 days and increased the growth of aerial part compared with the group only treated with Meloidogyne incognita. Especially, the group treated B. subtilis KRB-5 was superior in the growth of pepper. These results suggest that the B. subtilis KRB-5 can be used to control the root-knot nematode on pepper.

Acknowledgement

Supported by : 농림수산식품부

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