ArticleWorld journal of microbiology & biotechnology2018
Multilocus sequence typing for phylogenetic view and vip gene diversity of Bacillus thuringiensis strains of the Assam soil of North East India.
Article in World journal of microbiology & biotechnology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- A potent Vip3Aa94 protein from ThaiPeerJ · 2026Article
- Whole genome sequencing of a novel Bacillus thuringiensis isolated from Assam soil.BMC microbiology · 2023Article
- Vegetative Insecticidal Protein (Vip): A Potential Contender FromFrontiers in microbiology · 2021Review
- Current Insights on Vegetative Insecticidal Proteins (Vip) as Next Generation Pest Killers.Toxins · 2020Review
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Abstract
An agriculturally important insecticidal bacterium, Bacillus thuringiensis have been isolated from the soil samples of various part of Assam including the Kaziranga National Park. Previously, the isolates were characterized based on morphology, 16S rDNA sequencing, and the presence of the various classes' crystal protein gene(s). In the present study, the phylogenetic analysis of a few selected isolates was performed by an unambiguous and quick method called the multiple locus sequence typing (MLST). A known B. thuringiensis strain kurstaki 4D4 have been used as a reference strain for MLST. A total of four the MLST locus of housekeeping genes, recF, sucC, gdpD and yhfL were selected. A total of 14 unique sequence types (STs) was identified. A total number of alleles identified for the locus gdpD and sucC was 12, followed by locus yhfL was 11, however, only 6 alleles were detected for the locus recF. The phylogenetic analysis using MEGA 7.0.26 showed three major lineages. Approximately, 87% of the isolates belonged to the STs corresponding to B. thuringiensis, whereas two isolates, BA07 and BA39, were clustered to B. cereus. The isolates were also screened for the diversity of vegetative insecticidal protein (vip) genes. In all, 8 isolates showed the presence of vip1, followed by 7 isolates having vip2 and 6 isolates for vip3 genes. The expression of Vip3A proteins was analyzed by western blot analyses and expression of the Vip3A protein was observed in the isolate BA20. Thus, the phylogenetic relationship and diversity of Bt isolates from Assam soil was established based on MLST, in addition, found isolates having vip genes, which could be used for crop improvement.
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