1
|
Alves GB, Lemes TSO, Pereira EJG, Jurat-Fuentes JL, Smagghe G, Santos GR, Haddi K, Corrêa RFT, Melo FL, Jumbo LOV, Oliveira EE, Peron AJ, Ribeiro BM, Aguiar RWS. Draft genome of neotropical Bacillus thuringiensis UFT038 and its potential against lepidopteran soybean pests. Folia Microbiol (Praha) 2024; 69:91-99. [PMID: 38017300 DOI: 10.1007/s12223-023-01114-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 11/15/2023] [Indexed: 11/30/2023]
Abstract
Bacillus thuringiensis (Bt) is known for its Cry and Vip3A pesticidal proteins with high selectivity to target pests. Here, we assessed the potential of a novel neotropical Bt strain (UFT038) against six lepidopteran pests, including two Cry-resistant populations of fall armyworm, Spodoptera frugiperda. We also sequenced and analyzed the genome of Bt UFT038 to identify genes involved in insecticidal activities or encoding other virulence factors. In toxicological bioassays, Bt UFT038 killed and inhibited the neonate growth in a concentration-dependent manner. Bt UFT038 and HD-1 were equally toxic against S. cosmioides, S. frugiperda (S_Bt and R_Cry1 + 2Ab populations), Helicoverpa zea, and H. armigera. However, larval growth inhibition results indicated that Bt UFT038 was more toxic than HD-1 to S. cosmioides, while HD-1 was more active against Chrysodeixis includens. The draft genome of Bt UFT038 showed the cry1Aa8, cry1Ac11, cry1Ia44, cry2Aa9, cry2Ab35, and vip3Af5 genes. Besides this, genes encoding the virulence factors (inhA, plcA, piplC, sph, and chi1-2) and toxins (alo, cytK, hlyIII, hblA-D, and nheA-C) were also identified. Collectively, our findings reveal the potential of the Bt UFT038 strain as a source of insecticidal genes against lepidopteran pests, including S. cosmioides and S. frugiperda.
Collapse
Affiliation(s)
- Giselly B Alves
- Departamento de Biotecnologia, Universidade Federal de Tocantins, Gurupi, TO, 77413-070, Brazil
| | - Timóteo S O Lemes
- Departamento de Biotecnologia, Universidade Federal de Tocantins, Gurupi, TO, 77413-070, Brazil
| | - Eliseu J G Pereira
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, MG, 36570-900, Brazil
| | - Juan L Jurat-Fuentes
- Department of Entomology and Plant Pathology, University of Tennessee, Knoxville, TN, 37996, USA
| | - Guy Smagghe
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000, Ghent, Belgium
| | - Gil R Santos
- Departamento de Biotecnologia, Universidade Federal de Tocantins, Gurupi, TO, 77413-070, Brazil
| | - Khalid Haddi
- Departamento de Entomologia, Universidade Federal de Lavras, Lavras, MG, 37200-900, Brazil
| | - Roberto F T Corrêa
- Departamento de Biologia Celular, Universidade de Brasília, Brasília, DF, 70910-900, Brazil
| | - Fernando L Melo
- Departamento de Biologia Celular, Universidade de Brasília, Brasília, DF, 70910-900, Brazil
| | - Luis O Viteri Jumbo
- Departamento de Biotecnologia, Universidade Federal de Tocantins, Gurupi, TO, 77413-070, Brazil
- Carrera de Agronomía, Universidad Nacional de Loja (UNL), Loja, 110103, Ecuador
| | - Eugenio E Oliveira
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, MG, 36570-900, Brazil
| | - Antônio J Peron
- Departamento de Biotecnologia, Universidade Federal de Tocantins, Gurupi, TO, 77413-070, Brazil
| | - Bergmann M Ribeiro
- Departamento de Biologia Celular, Universidade de Brasília, Brasília, DF, 70910-900, Brazil
| | - Raimundo W S Aguiar
- Departamento de Biotecnologia, Universidade Federal de Tocantins, Gurupi, TO, 77413-070, Brazil.
| |
Collapse
|
2
|
Jiang L, Li R, Han Z, Zhao X, Cao D, Ow DW. Target lines for recombinase-mediated gene stacking in soybean. TAG. THEORETICAL AND APPLIED GENETICS. THEORETISCHE UND ANGEWANDTE GENETIK 2022; 135:1163-1175. [PMID: 35325256 DOI: 10.1007/s00122-021-04015-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 12/06/2021] [Indexed: 05/10/2023]
Abstract
KEY MESSAGE Five soybean target lines with recombinase sites at suitable genomic positions were obtained and tested for site-specific gene stacking. For introgression of new transgenic traits to field cultivars, adding new DNA to an existing transgene locus would reduce the number of segregating loci to reassemble back into a breeding line. We described previously an in planta transgene stacking system using the Bxb1 integrase to direct new DNA into a genomic target, but for this system to operate, the target locus must have a preexisting recombination site for Bxb1-mediated integration. Here, we describe 5 soybean target lines from the screening of 118 Agrobacterium-mediated transgenic plants that were positive for gus expression. Each of the 5 target lines has a single copy of the transgenic DNA with precise DNA sequences of the recombinase recognition sites, located at least 1 kb away from the nearest coding region, not close to the centromere, and showed good expression of the reporter gene. We tested Bxb1 integrase-mediated integration of a gfp-containing plasmid into each of these lines and showed precise site-specific integration in bombarded calluses. For plant regeneration, we used embryonic axes of mature soybean seeds to conduct a new set of biolistic transformation with a DsRed-containing plasmid. Three integration events were regenerated into whole plants, demonstrating the principle that target lines can serve as foundation lines for the stacking of DNA to predefined locations in the soybean genome.
Collapse
Affiliation(s)
- Li Jiang
- Plant Gene Engineering Center; Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China
- University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing, 100049, China
| | - Ruyu Li
- Plant Gene Engineering Center; Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China.
| | - Zhiguo Han
- Plant Gene Engineering Center; Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China
| | - Xiaohui Zhao
- The Innovative Academy of Seed Design, Key Laboratory of Soybean Molecular Design Breeding, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, 150081, China
| | - Dong Cao
- The Innovative Academy of Seed Design, Key Laboratory of Soybean Molecular Design Breeding, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, 150081, China
| | - David W Ow
- Plant Gene Engineering Center; Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Guangdong Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China.
| |
Collapse
|
3
|
Nguyen TD, La VH, Nguyen VD, Bui TT, Nguyen TT, Je YH, Chung YS, Ngo XB. Convergence of Bar and Cry1Ac Mutant Genes in Soybean Confers Synergistic Resistance to Herbicide and Lepidopteran Insects. FRONTIERS IN PLANT SCIENCE 2021; 12:698882. [PMID: 34733296 PMCID: PMC8559871 DOI: 10.3389/fpls.2021.698882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 09/13/2021] [Indexed: 06/13/2023]
Abstract
Soybean is a globally important crop species, which is subject to pressure by insects and weeds causing severe substantially reduce yield and quality. Despite the success of transgenic soybean in terms of Bacillus thuringiensis (Bt) and herbicide tolerance, unforeseen mitigated performances have still been inspected due to climate changes that favor the emergence of insect resistance. Therefore, there is a need to develop a biotech soybean with elaborated gene stacking to improve insect and herbicide tolerance in the field. In this study, new gene stacking soybean events, such as bialaphos resistance (bar) and pesticidal crystal protein (cry)1Ac mutant 2 (M#2), are being developed in Vietnamese soybean under field condition. Five transgenic plants were extensively studied in the herbicide effects, gene expression patterns, and insect mortality across generations. The increase in the expression of the bar gene by 100% in the leaves of putative transgenic plants was a determinant of herbicide tolerance. In an insect bioassay, the cry1Ac-M#2 protein tested yielded higher than expected larval mortality (86%), reflecting larval weight gain and weight of leaf consumed were less in the T1 generation. Similarly, in the field tests, the expression of cry1Ac-M#2 in the transgenic soybean lines was relatively stable from T0 to T3 generations that corresponded to a large reduction in the rate of leaves and pods damage caused by Lamprosema indicata and Helicoverpa armigera. The transgenic lines converged two genes, producing a soybean phenotype that was resistant to herbicide and lepidopteran insects. Furthermore, the expression of cry1Ac-M#2 was dominant in the T1 generation leading to the exhibit of better phenotypic traits. These results underscored the great potential of combining bar and cry1Ac mutation genes in transgenic soybean as pursuant of ensuring resistance to herbicide and lepidopteran insects.
Collapse
Affiliation(s)
- Tien Dung Nguyen
- Department of Biotechnology and Food Technology, Thai Nguyen University of Agriculture and Forestry, Thai Nguyen, Vietnam
| | - Van Hien La
- Department of Biotechnology and Food Technology, Thai Nguyen University of Agriculture and Forestry, Thai Nguyen, Vietnam
| | - Van Duy Nguyen
- Department of Biotechnology and Food Technology, Thai Nguyen University of Agriculture and Forestry, Thai Nguyen, Vietnam
| | - Tri Thuc Bui
- Department of Biotechnology and Food Technology, Thai Nguyen University of Agriculture and Forestry, Thai Nguyen, Vietnam
| | - Thi Tinh Nguyen
- Department of Biotechnology and Food Technology, Thai Nguyen University of Agriculture and Forestry, Thai Nguyen, Vietnam
| | - Yeon Ho Je
- Department of Agricultural Biotechnology, College of Agriculture and Life Science, Seoul National University, Seoul, South Korea
| | - Young Soo Chung
- Department of Genetic Engineering, Dong A University, Busan, South Korea
| | - Xuan Binh Ngo
- Department of Biotechnology and Food Technology, Thai Nguyen University of Agriculture and Forestry, Thai Nguyen, Vietnam
- Department of Science and Technology for Economic Technical Branches, Ministry of Science and Technology, Ha Noi, Vietnam
| |
Collapse
|
4
|
Farder-Gomes CF, Saravanan M, Martínez LC, Plata-Rueda A, Zanuncio JC, Serrão JE. Azadirachtin-based biopesticide affects the respiration and digestion in Anticarsia gemmatalis caterpillars. TOXIN REV 2021. [DOI: 10.1080/15569543.2021.1892764] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
| | - Meenakshi Saravanan
- Karunya Institute of Technology and Sciences, Coimbatore, India
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Brasil
| | | | | | - José Cola Zanuncio
- Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, Brasil
| | - José Eduardo Serrão
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Brasil
| |
Collapse
|