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Molecular Biology of Bacillus Thuringiensis

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Advances in Microbial Control of Insect Pests

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Abstract

Bacillus thuringiensis (Bt) is a Gram-positive bacterium, belonging to Genus 2, Bacillus, in Group 18, as classified in Bergey’s Manual of Determinative Bacteriology (ninth Edition). One of the characteristics of Bt is that proteinaceous crystals appear in the cells during sporulation. The parasporal crystals have been extensively researched and wildly applied in the world because of its specific insecticidal activities against many insects in the orders of Lepidoptera, Diptera, and Coleoptera, as well as some pests like plant/animal parasitic nematodes, mites, protozoan and fluke. According to the variation of flagellum antigen and other characteristics, 70 serotypes and 83 subspecies of B. thuringiensis were identified (Lacedet et al., 1999; Li Rongsen, unpublished). Different subspecies, even different bacterial strains, possess quite different kinds and quantities of insecticidal crystal proteins, resulting exuberance in the diversity of the toxicity. In recent ten years, some review articles elucidated the insecticidal crystal proteins and their genes in many aspects (Feitelson et al., 1992; Gill et al., 1992; Lereclus et al., 1989b, 1993; Aronson, 1993; Visser et aí.,1993 ; Yamamoto and Powell, 1993; Knowles, 1994; Schnepf et aí.,1998).

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  1. College of Life Science and Technology, Huazhong Agricultural University, Wuhan, Hubei, 430070, P.R. China

    Ming Sun, Lei Zhang & Ziniu Yu

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Sun, M., Zhang, L., Yu, Z. (2002). Molecular Biology of Bacillus Thuringiensis . In: Upadhyay, R.K. (eds) Advances in Microbial Control of Insect Pests. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-4437-8_2

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