Current Research on Agriculture and Life Sciences

  • Volume 17
  • /
  • Pages.7-13
  • /
  • 1999
  • /
  • 2287-271X(pISSN)
  • /
  • 2288-0356(eISSN)
Institute of Agricultural Science and Technology, Kyungpook National University (경북대학교 농업과학기술연구소)
권호 표지

Seedling Growth of Red Pepper and Antagonism on Alternaria alternata Causing Black Rot by Bacillus subtilis J-24 isolated from Red Pepper Rhizosphere

고추 근권에서 분리한 Bacillus subtilis J-24의 검은 곰팡이병원균 Alternaria alternata에 대한 길항력 및 고추의 초기 생육에 미치는 영향

  • Joo, Gil-Jae (Institute of Agricultural Science & Technology, Kyungpook National University) ;
  • Kim, Hak-Yoon (Institute of Agricultural Science & Technology, Kyungpook National University) ;
  • Hur, Sang-Sun (Institute of Agricultural Science & Technology, Kyungpook National University) ;
  • Woo, Churl-Joo (Institute of Agricultural Science & Technology, Kyungpook National University) ;
  • Rhee, In-Koo (Dept. of Agricultural Chemistry, Kyungpook National University)
  • 주길재 (경북대학교 농업과학기술연구소) ;
  • 김학윤 (경북대학교 농업과학기술연구소) ;
  • 허상선 (경북대학교 농업과학기술연구소) ;
  • 우철주 (경북대학교 농업과학기술연구소) ;
  • 이인구 (경북대학교 농화학과)
  • Published : 1999.12.30
Download PDF
⟨ Previous Next ⟩

Abstract

Thirty bacteria were isolated from the red pepper rhizosphere. The isolates were screened for antagonism to Alternaria alteranta causing red pepper black rot. Antagonistic bacterium No. J-24 was selected among the isolated bacteria and was identified as Bacillus subtilis based on morphological and physiological characteristics and MIDI system. B. subtilis J-24 showed antifungal activities against A. alternata(inhibition percentage, 99%), Botrytis cinerea, Phytophthora capsici, Pythium ultimum, Colletotrichum gloeosporioides, Stemphylium botryosum. The growth of red pepper seedling was promoted as compared to control when the microbial inoculants was mixed in bed soil. In the mixed microbial inoculants bed soil, the leaf area of red pepper was increased of 15 percent, the hypocotyl weight 12 percent, the root length 12 percent, total dry weight 13 percent as compared to those grown in the general bed soil.

고추의 뿌리에 서식하고 있는 근권미생물을 30여종 분리하여 고추 검은 곰팡이병원균 A. alteranta에 길항하는 미생물을 분리한 결과 분리주 No. J-24 균주가 가장 길항력이 우수하였으며 Bacillus subtilis로 동정되었다. B. subtilis J-24는 검은곰팡이병균(Alternaria alternata)에 대해서는 생육저지 효과가 99%로 나타났으며, 그외 갯빛곰팡이병균(Botrytis cinerea), 역병균(Phytophthora capsici), 잘록병균(Pythium ultimum), 탄저병균(Colletotrichum gloeosporioides), 겹무늬병균(Stemphylium botryosum)에도 생육저지효과를 강하게 나타내었다. 고추 유묘의 생장활력은 미생물제제가 첨가된 상토가 일반 상토 보다 엽면적이 15%, 줄기길이가 12%, 뿌리길이가 12% 증가하였고 전체 건물중이 약 13% 증가하여 고추유묘의 생장활력이 증가되었다.

Keywords