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액체배지에서 눈꽃동충하초균(Paecilomyces tenuipes)의 계대증식에 따른 증식 특성

Growth Characteristics of Paecilomyces tenuipes by the Passage in Liquid Media

  • 오정미 (충북대학교 농업생명환경대학 식물의학과) ;
  • 이재경 (충북대학교 농업생명환경대학 식물의학과) ;
  • 구현나 (충북대학교 농업생명환경대학 식물의학과) ;
  • 우수동 (충북대학교 농업생명환경대학 식물의학과)
  • Oh, Jeong-Mi (Department of Plant Medicine, College of Agriculture, Life & Environment Sciences, Chungbuk National University) ;
  • Lee, Jae-Kyung (Department of Plant Medicine, College of Agriculture, Life & Environment Sciences, Chungbuk National University) ;
  • Koo, Hyun-Na (Department of Plant Medicine, College of Agriculture, Life & Environment Sciences, Chungbuk National University) ;
  • Woo, Soo-Dong (Department of Plant Medicine, College of Agriculture, Life & Environment Sciences, Chungbuk National University)
  • 발행 : 2008.06.30

초록

눈꽃동충하초균(Paecilomyces tenuipes)의 균사 및 포자 형성에 영향을 미치는 계대증식에서의 특성을 알아보기 위하여, 액체배지로써는 누에 유충분말이 함유된 SL배지와 일반적인 PD배지를 이용하였고, 고체배지로는 누에 번데기 분말을 넣은 현미배지상에서, 세대증식이 이루어진 각 균주에 대해서 조사하였다. 그 결과, 액체 배지에서의 포자 생산량은 세대에 따라 큰 차이를 보였으나, 현미배지에서의 포자 생성율은 세대간에 큰 차이를 보이지 않음으로써, 액체배지에서 계대증식이 고체배지에서의 포자생산량에는 큰 영향을 미치지 않는 것으로 나타났다. 또한 현미배지에 대한 최적 포자 접종량은 각각 $1{\times}10^{10}$ conidia/ml, $1{\times}10^6$ conidia/ml, $1{\times}10^6$ conidia/ml의 농도로 접종하였을 경우 농도에 따른 생산량에 차이가 나타나지 않아서 $1{\times}10^6$ conidia/ml만으로도 충분한 것으로 나타났다.

The growth characteristics of Paecilomyces tenuipes according to the passage in the two kind of liquid media were investigated by comparing the mycelium and conidium formation degrees. The potato dextrose broth medium and the silkworm larvae medium containing the silkworm powder were used as the liquid media, and the potato dextrose agar medium and the brown rice medium containing the powder of silkworm pupa were used as the solid media. The conidium formation degree in liquid media differed by the passages but that in solid media was not. This suggested that the passage in liquid media did not affect significantly the conidium formation in solid media. When the brown rice media were inoculated with the concentration of $1{\times}10^{10}$ conidia/ml, $1{\times}10^8$ conidia/ml and $1{\times}10^6$ conidia/ml, respectively, the conidium formation degrees were similar. This indicated that the optimal inoculation concentration of conidium to the brown rice media is $1{\times}10^6$ conidia/ml.

키워드

참고문헌

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