在Bacillus thuringiensis菌株BTG中的多个基因表明具有广泛的杀虫活性
Alexander Arsov1, Maria Gerginova1, Tsvetelina Paunova-Krasteva1
1Institute of Microbiology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria.
International journal of molecular sciences
|July 14, 2023
概括
突菌株 (Bacillus thuringiensis) 在广泛的害虫防治方面表现有前途. 一种新型菌株BTG拥有多个cry基因,使其能够对各种农业害虫有强大的作用.
科学领域:
- 微生物学 微生物学
- 昆虫毒理学 昆虫毒理学
- 农业科学 农业科学
背景情况:
- 硫杆菌 (Bt) 是一种成熟的生物杀虫剂,其亚种向特定的害虫.
- 开发广泛的Bt菌株对于有效的农业害虫管理至关重要.
研究的目的:
- 从保加利亚土壤中分离和描述Bacillus thuringiensis菌株,以潜在的广泛害虫控制.
- 识别具有大量和多样化的晶体 (Cry) 内毒素基因的菌株.
主要方法:
- 从保加利亚土壤息地分离出20种Bacillus thuringiensis菌株.
- 使用PCR和特定的原始对进行哭泣基因查.
- 扫描电子显微镜 (SEM) 用于晶体形态分析.
- 全基因组测序和最有前途的菌株 (BTG) 的注释.
主要成果:
- 20个分离物中的7个含有哭泣基因.
- 菌株PL1,PL3和PL20至少含有三个cry基因;BTG至少含有四个.
- SEM揭示了各种各样的晶体形态 (双金字塔形,多角形,立方形,球形).
- 在BTG基因组测序中,发现了7个cry基因 (cry1Ab35,cry1Db,cry1Fb,cry1Ib,cry2Ab,cry8Ea1,cry9Ba) 并没有发现任何等离子体.
结论:
- 甲状腺菌 (Bacillus thuringiensis serovar galleriae BTG) 拥有独特的哭泣基因组合,这表明它可能具有广泛的杀虫活性.
- 在BTG中发现的Cry毒素可能会向类,大类,类,半类和胃类的害虫.
- 全基因组测序证实了BTG在开发新型,广泛的生物杀虫剂方面的潜力.
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