
Effects of Temperature and Culture Media Composition on Sporulation, Mycelial Growth, and Antifungal Activity of Isaria javanica pf185
- Jang Hoon Lee Yong Seong Lee Young Cheol Kim
- 한국식물병리학회
- Research in Plant Disease(식물병연구)
- 식물병연구 제27권 제3호
- 등재여부 : KCI등재
- 2021.09
- 99 - 106 (8 pages)
The fungal isolate Isaria javanica pf185 has potential as a mycopesticide because it demonstrates insecticidal activity against the green peach aphid and antifungal activity against Colletotrichum gloeosporioides. For com- mercialization of this isolate, determination of the optimal and least expensive culture conditions is required; however, these data are not currently available. This study describes the conditions for optimal development of conidia and production of metabolites for the biocontrol of the fungal pathogen. The optimal culture con- ditions were examined using cultures on solid agar and liquid media. High growth temperature enhanced spore formation but reduced antifungal activity in both solid and liquid media. The highest spore yield was obtained in a medium containing glucose as a carbon source and yeast extract as a nitrogen source. Soybean powder and wheat bran were effective nitrogen sources that promoted spore production and antifungal ac- tivity of the isolate. These results revealed the basic, cost-effective growth media for commercial production of a biopesticide with insecticidal and antifungal properties for use in integrated pest management.
Introduction
Materials and Methods
Results
Discussion