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- Title
Bacillus thuringiensis: A Common Member of Microflora in Activated Sludges of a Sewage Treatment Plant.
- Authors
Mizuki, Eiichi; Maeda, Minoru; Tanaka, Rie; Lee, Dae-Weon; Hara, Miki; Akao, Tetsuyuki; Yamashita, Satoko; Kim, Ho-San; Ichimatsu, Tokio; Ohba, Michio
- Abstract
Bacillus thuringiensis was recovered at a high frequency from activated-sludge system environments in an urban sewage-digestive plant. All of the test materials, sampled at several digesting steps, contained the organism. Of 515 colonies belonging to the B. cereus/B. thuringiensis group, 45 (8.7%) were assigned to B. thuringiensis. The highest density of this bacterium was 1.6 × 103 cfu/ml in a scum sample of the first aeration basin. Among the 45 isolates, 7 were assigned to the known H serovars. Two isolates of the serovar kenyae isolates exhibited Lepidoptera-specific toxicity. Diptera-specific toxicity was shown by an isolate of serovar israelensis and a serologically undefined isolate. Lectin activity was associated with 12 isolates.
- Subjects
BACILLUS thuringiensis; SEWAGE; EFFECT of sewage on plants; LEPIDOPTERA; ACANTHOPTEROCTETIDAE; INSECTS
- Publication
Current Microbiology, 2001, Vol 42, Issue 6, p422
- ISSN
0343-8651
- Publication type
Article
- DOI
10.1007/s002840010241