Abstract

Here, we present the whole genome sequence of Bt S2160-1, a potential alternative to the mosquitocidal model strain, Bti. One chromosome genome and four mega-plasmids were contained in Bt S2160-1, and 13 predicted genes encoding predicted insecticidal crystal proteins were identified clustered on one plasmid pS2160-1p2 containing two pathogenic islands (PAIs) designed as PAI-1 (Cry54Ba, Cry30Ea4, Cry69Aa-like, Cry50Ba2-like, Cry4Ca1-like, Cry30Ga2, Cry71Aa-like, Cry72Aa-like, Cry70Aa-like, Cyt1Da2-like and Vpb4C1-like) and PAI-2 (Cyt1Aa-like, and Tpp80Aa1-like). The clusters appear to represent mosquitocidal toxin islands similar to pathogenicity islands. Transcription/translation of 10 of the 13 predicted genes was confirmed by whole-proteome analysis using LTQ-Orbitrap LC–MS/MS. In summary, the present study identified the existence of a mosquitocidal toxin island in Bacillus thuringiensis, and provides important genomic information for understanding the insecticidal mechanism of B. thuringiensis.

Details

Title
Mosquitocidal toxin-like islands in Bacillus thuringiensis S2160-1 revealed by complete-genome sequence and MS proteomic analysis
Author
Zhou, Yan 1 ; Zhang, Wenfei 2 ; Wan, Yusong 3 ; Jin, Wujun 3 ; Zhang, Yan 4 ; Li, Youzhi 5 ; Chen, Baoshan 6 ; Jiang, Mingguo 1 ; Fang, Xuanjun 7 

 Guangxi Minzu University, Guangxi Key Laboratory for Polysaccharide Materials and Modifications, School of Marine Sciences and Biotechnology, Nanning, China (GRID:grid.411860.a) (ISNI:0000 0000 9431 2590) 
 Hainan Normal University, Ministry of Education Key Laboratory for Ecology of Tropical Islands, College of Life Sciences, Haikou, China (GRID:grid.440732.6) (ISNI:0000 0000 8551 5345) 
 Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China (GRID:grid.418873.1) 
 School of Life Science and Technology, Harbin Institute of Technology, Harbin, China (GRID:grid.19373.3f) (ISNI:0000 0001 0193 3564) 
 Guangxi University, Guangxi Research Center for Microbial and Enzyme Engineering Technology, College of Life Science and Technology, Nanning, China (GRID:grid.256609.e) (ISNI:0000 0001 2254 5798) 
 Guangxi University, State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Agriculture, Nanning, China (GRID:grid.256609.e) (ISNI:0000 0001 2254 5798) 
 Hainan Institute of Tropical Agricultural Resources, Sanya, China (GRID:grid.411860.a); Jiyang College of Zhejiang A&F University, Institute of Life Science, Zhuji, China (GRID:grid.495252.d) 
Pages
15216
Publication year
2024
Publication date
2024
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
3074884592
Copyright
© The Author(s) 2024. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.