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Feng C, Guo X, Gu T, Hua Y, Zhuang X, Zhang K. Generation of a Triple-Shuttling Vector and the Application in Plant Plus-Strand RNA Virus Infectious cDNA Clone Construction. Int J Mol Sci 2023; 24:ijms24065477. [PMID: 36982550 PMCID: PMC10056883 DOI: 10.3390/ijms24065477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 03/02/2023] [Accepted: 03/08/2023] [Indexed: 03/18/2023] Open
Abstract
Infectious cloning of plant viruses is a powerful tool for studying the reverse genetic manipulation of viral genes in virus–host plant interactions, contributing to a deeper understanding of the life history and pathogenesis of viruses. Yet, most of the infectious clones of RNA virus constructed in E. coli are unstable and toxic. Therefore, we modified the binary vector pCass4-Rz and constructed the ternary shuttle vector pCA4Y. The pCA4Y vector has a higher copy number in the E. coli than the conventional pCB301 vector, can obtain a high concentration of plasmid, and is economical and practical, so it is suitable for the construction of plant virus infectious clones in basic laboratories. The constructed vector can be directly extracted from yeast and transformed into Agrobacterium tumefaciens to avoid toxicity in E. coli. Taking advantage of the pCA4Y vector, we established a detailed large and multiple DNA HR-based cloning method in yeast using endogenous recombinase. We successfully constructed the Agrobacterium-based infectious cDNA clone of ReMV. This study provides a new choice for the construction of infectious viral clones.
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Affiliation(s)
- Chenwei Feng
- Department of Plant Pathology, College of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Xiao Guo
- Department of Plant Pathology, College of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Tianxiao Gu
- Department of Plant Pathology, College of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Yanhong Hua
- Department of Plant Pathology, College of Plant Protection, Yangzhou University, Yangzhou 225009, China
| | - Xinjian Zhuang
- Department of Plant Pathology, College of Plant Protection, Yangzhou University, Yangzhou 225009, China
- Joint International Research Laboratory of Agriculture, Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou 225009, China
| | - Kun Zhang
- Department of Plant Pathology, College of Plant Protection, Yangzhou University, Yangzhou 225009, China
- Joint International Research Laboratory of Agriculture, Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou 225009, China
- Plant Protection Research Institute, Guangdong Academy of Agricultural Sciences/Guangdong Provincial Key Laboratory of High, Technology for Plant Protection, Guangzhou 510640, China
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Jiangsu Engineering and Technology Research Center for Microbiology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China
- Correspondence: or ; Tel.: +86-182-5274-7896
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Jin T, Yin J, Wang T, Xue S, Li B, Zong T, Yang Y, Liu H, Liu M, Xu K, Wang L, Xing G, Zhi H, Li K. R SC3 K of soybean cv. Kefeng No.1 confers resistance to soybean mosaic virus by interacting with the viral protein P3. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2023; 65:838-853. [PMID: 36330964 DOI: 10.1111/jipb.13401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 11/02/2022] [Indexed: 06/16/2023]
Abstract
Soybean mosaic virus (SMV) is one of the most devastating viral pathogens of soybean (Glycine max (L.) Merr). In total, 22 Chinese SMV strains (SC1-SC22) have been classified based on the responses of 10 soybean cultivars to these pathogens. However, although several SMV-resistance loci in soybean have been identified, no gene conferring SMV resistance in the resistant soybean cultivar (cv.) Kefeng No.1 has been cloned and verified. Here, using F2 -derived F3 (F2:3 ) and recombinant inbred line (RIL) populations from a cross between Kefeng No.1 and susceptible soybean cv. Nannong 1138-2, we localized the gene in Kefeng No.1 that mediated resistance to SMV-SC3 strain to a 90-kb interval on chromosome 2. To study the functions of candidate genes in this interval, we performed Bean pod mottle virus (BPMV)-induced gene silencing (VIGS). We identified a recombinant gene (which we named RSC3 K) harboring an internal deletion of a genomic DNA fragment partially flanking the LOC100526921 and LOC100812666 reference genes as the SMV-SC3 resistance gene. By shuffling genes between infectious SMV DNA clones based on the avirulent isolate SC3 and virulent isolate 1129, we determined that the viral protein P3 is the avirulence determinant mediating SMV-SC3 resistance on Kefeng No.1. P3 interacts with RNase proteins encoded by RSC3 K, LOC100526921, and LOC100812666. The recombinant RSC3 K conveys much higher anti-SMV activity than LOC100526921 and LOC100812666, although those two genes also encode proteins that inhibit SMV accumulation, as revealed by gene silencing in a susceptible cultivar and by overexpression in Nicotiana benthamiana. These findings demonstrate that RSC3 K mediates the resistance of Kefeng No.1 to SMV-SC3 and that SMV resistance of soybean is determined by the antiviral activity of RNase proteins.
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Affiliation(s)
- Tongtong Jin
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Soybean-Ministry of Agriculture, National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jinlong Yin
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Soybean-Ministry of Agriculture, National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing, 210095, China
- Jiangsu Key Laboratory for Microbes and Functional Genomics, College of Life Sciences, Nanjing Normal University, Nanjing, 210023, China
| | - Tao Wang
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Soybean-Ministry of Agriculture, National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Song Xue
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Soybean-Ministry of Agriculture, National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Bowen Li
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Soybean-Ministry of Agriculture, National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Tingxuan Zong
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Soybean-Ministry of Agriculture, National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yunhua Yang
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Soybean-Ministry of Agriculture, National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Hui Liu
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Soybean-Ministry of Agriculture, National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Mengzhuo Liu
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Soybean-Ministry of Agriculture, National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Kai Xu
- Jiangsu Key Laboratory for Microbes and Functional Genomics, College of Life Sciences, Nanjing Normal University, Nanjing, 210023, China
| | - Liqun Wang
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Soybean-Ministry of Agriculture, National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Guangnan Xing
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Soybean-Ministry of Agriculture, National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Haijian Zhi
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Soybean-Ministry of Agriculture, National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Kai Li
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Soybean-Ministry of Agriculture, National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing, 210095, China
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