Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
권호 표지

Cultural Characteristics and Pathogenicity Test of a Die-back Fungus, Cenangium ferruginosum Isolated from Pinus koraiensis

잣나무에서 분리(分離)한 피목가지마름병균, Cenangium ferruginosum의 배양특성(培養特性) 및 병원성(病原性) 검정(檢定)

  • Lee, Sang Yong (Dept. of Forest Resources Protection, Kangwon Nat'l Univ.) ;
  • Jung, Joo Hae (Dept. of Forest Resources Protection, Kangwon Nat'l Univ.) ;
  • Lee, Jong Kyu (Dept. of Forest Resources Protection, Kangwon Nat'l Univ.)
  • 이상용 (강원대학교 삼림자원보호학과) ;
  • 정주해 (강원대학교 삼림자원보호학과) ;
  • 이종규 (강원대학교 삼림자원보호학과)
  • Received : 1998.07.30
  • Published : 1998.12.31
Download PDF
⟨ Previous Next ⟩

Abstract

A die-back fungus isolated from Pinus koraiensis was identified as Cenangium ferruginosum. Mycelial growth of the fungus was the best on PDA among five media tested. Mycelial growths on agar media supplemented with extracts from coniferous trees were relatively better than those on media with extracts from non-coniferous trees. Optimum temperature and pH for the mycelial growth of C. ferruginosum on PDA were $10^{\circ}C$ and pH 5, respectively. When five-years-old P. koraiensis seedlings were artificially inoculated with the fungus for the pathogenicity test of this fungus, 80% of seedlings were infected. and the same symptoms and signs were developed as those of naturally-infected trees.

피목가지마름병에 감염된 잣나무로부터 병원균을 분리 동정한 결과, Cenangium ferruginosum으로 동정되었다. C. ferruginosum의 균사생장은 공시한 5종의 인공배지 중에서 PDA(Potato Dextrose Agar)에서 가장 왕성하였으며, 활엽수 추출물 첨가배지에서보다 침엽수 추출물 첨가배지에서 상대적으로 좋았다. PDA에서의 균사생장 최적온도 및 pH는 각각 $10^{\circ}C$ 및 pH5 였다. 한편, 5년생 잣나무에 인공배양한 균사를 접종하여 병원성을 검정한 결과, 80%가 고사하였으며, 자연상태에서 감염원 이병목과 동일한 병징을 나타내었다.

Keywords