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Han X, Huang C, Qi H, Zhu Y, Hu X, Wen Y, Long Y, Xu L, Zhang F. The construction and evaluation of secretory expression engineering bacteria for the trans-Cry3Aa-T-HasA fusion protein against the Monochamus alternatus vector. Front Cell Infect Microbiol 2024; 14:1362961. [PMID: 38465234 PMCID: PMC10921938 DOI: 10.3389/fcimb.2024.1362961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 02/06/2024] [Indexed: 03/12/2024] Open
Abstract
Pine wood nematode disease is currently the most deadly forest disease in China, and the Monochamus alternatus is its primary vector. Controlling the M. alternatus is crucial for managing pine wood nematode disease. This study, based on the selected HasA (pGHKW4) secretory expression vector, used electroporation to combine the genetically modified high-toxicity toxin Cry3Aa-T with the entomopathogenic bacterium Yersinia entomophaga isolated from the gut of the M. alternatus. The SDS-PAGE and Western blotting techniques were employed to confirm the toxin protein's secretion capability. The engineered bacteria's genetic stability and effectiveness in controlling M. alternatus were assessed for their insecticidal activity. The results of the SDS-PAGE and Western blotting analyses indicate that the HasA system effectively expresses toxin protein secretion, demonstrates certain genetic stability, and exhibits high insecticidal activity against M. alternatus. This study constructed a highly toxic entomopathogenic engineered bacterial strain against M. alternatus larvae, which holds significant implications for controlling M. alternatus, laying the foundation for subsequent research and application of this strain.
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Affiliation(s)
- Xiaohong Han
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Province University, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Chenyan Huang
- State Key Laboratory of Biocontrol, School of Ecology, Sun Yat-sen University, Guangzhou, China
| | - Huan Qi
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Province University, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yukun Zhu
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Province University, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xinran Hu
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Province University, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yingxin Wen
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Province University, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yirong Long
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Province University, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Lei Xu
- Graduate School of Chinese Academy of Agricultural Sciences, Beijing, China
| | - Feiping Zhang
- College of Forestry, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Integrated Pest Management in Ecological Forests, Fujian Province University, Fujian Agriculture and Forestry University, Fuzhou, China
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Álvarez SP, Ardisana EFH. Biotechnology of Beneficial Bacteria and Fungi Useful in Agriculture. Fungal Biol 2021. [DOI: 10.1007/978-3-030-54422-5_12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Liu Y, Xue Y, Tang J, Chen J, Chen M. Efficient mesophyll protoplast isolation and development of a transient expression system for castor-oil plant (Ricinus communis L.). Biol Futur 2019; 70:8-15. [PMID: 34554435 DOI: 10.1556/019.70.2019.02] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 02/21/2019] [Indexed: 11/19/2022]
Abstract
INTRODUCTION We investigated the main factors affecting the efficacy of protoplast isolation, including leaf-obtaining period, cutting shapes of leaf material, enzyme concentration, enzymolysis time, and centrifugal speed. METHODS Protoplast isolation was optimal on the condition of 20 days of leaf materials, 2-mm filament of leaves, 1.6% RS and 0.8% R-10, 80 min of enzymolysis, and 700 rpm of centrifugation, resulting in the best yield (1.19 X 106 protoplasts/g FW) and vitality (80.34%) of mesophyll protoplasts. The transient expression vector pGFPl with green fluorescent protein was transfected into the obtained protoplasts from castor by polyethylene glycol-mediated method with a transformation efficiency of 12.37%. RESULTS Moreover, the applicability of the system for studying the subcellular localization of Re FATA (an acyl-ACP thioesterase) was validated via the protoplast isolation and transient expression protocol in this study. DISCUSSION Collectively, the efficient mesophyll protoplast isolation and protoplast transient expression system facilitate to analyze the function of specific gene in castor (Ricinus communis L).
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Affiliation(s)
- Ying Liu
- Department of Biotechnology, Faculty of Agricultural Science, Guangdong Ocean University, Zhanjiang, Guangdong, P. R. China
| | - Yingbin Xue
- Department of Biotechnology, Faculty of Agricultural Science, Guangdong Ocean University, Zhanjiang, Guangdong, P. R. China
| | - Jianian Tang
- Department of Biotechnology, Faculty of Agricultural Science, Guangdong Ocean University, Zhanjiang, Guangdong, P. R. China.,State Key Laboratory for Conservation and Utilization of Subtropical Afro-Bioresources, South China Agricultural University, Guangzhou, Guangdong, P. R. China
| | - Jianping Chen
- Department of Food Science and Engineering, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang, Guangdong, P. R. China.
| | - Miao Chen
- Department of Biotechnology, Faculty of Agricultural Science, Guangdong Ocean University, Zhanjiang, Guangdong, P. R. China. .,State Key Laboratory for Conservation and Utilization of Subtropical Afro-Bioresources, South China Agricultural University, Guangzhou, Guangdong, P. R. China.
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Toxicity of Bacillus thuringiensis crystal proteins against eri silkworm, Samia cynthia ricini (Lepidoptera: Saturniidae). J Invertebr Pathol 2016; 138:116-9. [DOI: 10.1016/j.jip.2016.06.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 06/29/2016] [Accepted: 06/30/2016] [Indexed: 11/23/2022]
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Lee KR, Chen GQ, Kim HU. Current progress towards the metabolic engineering of plant seed oil for hydroxy fatty acids production. PLANT CELL REPORTS 2015; 34:603-615. [PMID: 25577331 DOI: 10.1007/s00299-015-1736-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2014] [Accepted: 12/30/2014] [Indexed: 06/04/2023]
Abstract
Hydroxy fatty acids produced in plant seed oil are important industrial material. This review focuses on the use of metabolic engineering approaches for the production of hydroxy fatty acids in transgenic plants. Vegetable oil is not only edible but can also be used for industrial purposes. The industrial demand for vegetable oil will increase with the continued depletion of fossil fuels and ensuing environmental issues such as climate change, caused by increased carbon dioxide in the air. Some plants accumulate high levels of unusual fatty acids in their seeds, and these fatty acids (FAs) have properties that make them suitable for industrial applications. Hydroxy fatty acids (HFAs) are some of the most important of these industrial FAs. Castor oil is the conventional source of HFA. However, due to the presence of toxin ricin in its seeds, castor is not cultivated on a large scale. Lesquerella is another HFA accumulator and is currently being developed as a new crop for a safe source of HFAs. The mechanisms of HFA synthesis and accumulation have been extensively studied using castor genes and the model plant Arabidopsis. HFAs accumulated to 17% in the seed oil of Arabidopsis expressing a FA hydroxylase gene from castor (RcFAH12), but its seed oil content and plant growth decreased. When RcFAH12 gene was coexpressed with additional castor gene(s) in Arabidopsis, ~30% HFAs were accumulated and the seed oil content and plant growth was almost restored to the wild-type level. Further advancement of our understanding of pathways, genes and regulatory mechanisms underlying synthesis and accumulation of HFAs is essential to developing and implementing effective genetic approaches for enhancing HFA production in oilseeds.
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Affiliation(s)
- Kyeong-Ryeol Lee
- Department of Agricultural Biotechnology, National Academy of Agricultural Science, Rural Development Administration, Jeonju, 560-500, Republic of Korea
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Sujatha M, Visarada KBRS. Transformation of nuclear DNA in meristematic and embryogenic tissues. Methods Mol Biol 2013; 940:27-44. [PMID: 23104331 DOI: 10.1007/978-1-62703-110-3_3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Particle bombardment/biolistic delivery is a very popular method of genetic transformation of diverse targets including cells and intact tissues. Delivery of DNA through particle bombardment is genotype and species independent, nevertheless, an efficient protocol for large-scale generation of transgenic plants through embryogenic tissues with a high (≥80%) shoot regeneration efficiency is a prerequisite. Young embryogenic tissues or multiple shoot buds in early stages of induction are the most suited target tissues for recovery of transgenic plants. We describe the protocol for delivery of foreign genes using particle delivery system (Biorad gene gun, PDS-1000/He) in to the meristematic tissues of embryonic axes derived from mature seeds of castor. With the optimized physical and biological parameters, putative transformants were obtained at a frequency of 1.4% through particle gun bombardment of castor embryo axes. Also, transformation of embryogenic calli of sorghum using particle inflow gun (PIG) is described.
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Affiliation(s)
- Mulpuri Sujatha
- Directorate of Oilseeds Research, Rajendranagar, Hyderabad, India.
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