Characterization of spore coat proteins of Bacillus thuringiensis and Bacillus cereus |
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| Affiliation: | 1. State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, PR China;2. Department of Tissue Engineering & Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences (IUMS), Tehran, Iran;1. Guangdong Provincial Research Center for Environment Pollution Control and Remediation Materials, Department of Ecology, College of Life Science and Technology, Jinan University, Guangzhou 510632, China;2. State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China;3. Consortium on Health, Environment, Education and Research (CHEER) and Department of Science and Environmental Studies, The Education University of Hong Kong, Tai Po, Hong Kong, China |
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| Abstract: | ![]()
- 1.1. Spore coat extracts from Bacillus thuringiensis subspecies kurstaki and israelensis and Bacillus cereus T and B. cereus NRRL 569 were characterized by polyacrylamide gel electrophoresis in sodium dodecyl sulfate and by amino acid analysis.
- 2.2. Both B. cereus spore coats had similar electrophoretic profiles.
- 3.3. The B. thuringiensis spore coats contained crystal proteins as major components as well as lower mol. wt proteins.
- 4.4. B. thuringiensis subsp. israelensis had a unique coat protein profile which was different from B. cereus and B. thuringiensis subsp. kurstaki coats.
- 5.5. Insecticidal activity of spores against the tobacco hornworm, Manduca sexta, and the mosquito, Aedes aegypti, also was determined.
- 6.6. B. thuringiensis subsp. kurstaki spores were lethally toxic to the tobacco hornworm (Lepidoptera) larvae, whereas spores of the other subspecies were not.
- 7.7. Except for subspecies israelensis, none of the spores was effective against the mosquito (Diptera) larvae.
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