Antifungal activities of Bacillus thuringiensis isolates on barley and cucumber powdery mildews.
Fourteen Bacillus thuringiensis isolates having both insecticidal activity and in vitro antifungal activity were selected and tested for in vivo antifungal activity against tomato late blight, wheat leaf rust, tomato gray mold, and barley powdery mildew in growth chambers. All the isolates represented more than 70% disease control efficacy against at least one of four plant diseases. Specifically, 12 isolates exhibited strong control activity against barley powdery mildew. Under glasshouse conditions, four (50-02, 52-08, 52-16, and 52- 18) of the isolates also displayed potent control efficacy against cucumber powdery mildew. To our knowledge, this is the first report of B. thuringiensis isolates that have disease control efficacy against powdery mildew of barley and cucumber as well as insecticidal activity.
Choi
Gyung Ja
GJ
Chemical Biotechnology Research Center, Korea Research Institute of Chemical Technology, Daejeon 305-343, Korea. kjchoi@krict.re.kr
Kim
Jin-Cheol
JC
Jang
Kyoung Soo
KS
Lee
Dong-Hyun
DH
D000935:Antifungal Agents / Q000494:pharmacology*; D001413:Bacillus thuringiensis / Q000737:chemistry*; D018553:Cucumis sativus; D005659:Fungicides, Industrial / Q000494:pharmacology; D001467:Hordeum; D009181:Mycoses / Q000382:microbiology* / Q000517:prevention & control; D010935:Plant Diseases / Q000382:microbiology*
D000935:Antifungal Agents; D005659:Fungicides, Industrial