title: Cloning and rescue of the genome of Bombyx mori bidensovirus, and characterization of a recombinant virus.
abstract: Bombyx mori bidensovirus (BmBDV), which belongs to the Bidnaviridae family established by the International Committee on Taxonomy of Viruses in 2011, was the first bidensovirus identified in insects. The structure of BmBDV is similar to that of parvoviruses, while its replication is similar to that of adenoviruses. Although BmBDV has the potential to be used as a tool in biological pest control and as an expression vector, virus rescue has been a bottleneck in the application of this virus.
  
  
  
  In this study, we constructed a full-length genomic clone of BmBDV and showed that its terminal structure was restored. A recombinant BmBDV that expressed the green fluorescence protein (GFP) gene was constructed. Then, BmN cells, which are an ovarian cell line, were co-transfected with the linearized genome using continuous culture and expanded cell culture methods.
  
  
  
  The results showed that the GFP gene was expressed successfully, and that cell lesions occurred in virus-infected cells. Furthermore, typical densonucleosis viruses were observed in reinfected silkworm larvae and larval midgut tissues infected by BmBDV, as evidenced by the emission of green fluorescence.
  
  
  
  Overall, these results suggest that the virus could be rescued from the infected BmN cells after co-transfection with the linear full length virus genome.
authors.affiliation: Institute of Life Sciences, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, China.
authors.forename: Panpan
authors.initials: P
authors.lastname: Zhang
authors.affiliation: Institute of Life Sciences, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, China.
authors.forename: Di
authors.initials: D
authors.lastname: Miao
authors.affiliation: Institute of Life Sciences, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, China.
authors.forename: Yahui
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Institute of Life Sciences, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, China.
authors.forename: Meizi
authors.initials: M
authors.lastname: Wang
authors.affiliation: Institute of Life Sciences, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, China.
authors.forename: Zhaoyang
authors.initials: Z
authors.lastname: Hu
authors.affiliation: Institute of Life Sciences, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, China.
authors.forename: Peng
authors.initials: P
authors.lastname: Lü
authors.affiliation: Institute of Life Sciences, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, China. yaoqin@ujs.edu.cn.
authors.forename: Qin
authors.initials: Q
authors.lastname: Yao
mesh_terms: D000818:Animals; D012831:Bombyx / Q000821:virology*; D002460:Cell Line; D003001:Cloning, Molecular; D016679:Genome, Viral; D049452:Green Fluorescent Proteins / Q000235:genetics / Q000378:metabolism; D007814:Larva / Q000821:virology; D018155:Orthopoxvirus / Q000145:classification / Q000235:genetics* / Q000302:isolation & purification / Q000378:metabolism; D011995:Recombination, Genetic; D014162:Transfection
chemical_list: D049452:Green Fluorescent Proteins
keywords: Bombyx mori bidensovirus; genome clone; linear co-transfection; virus rescue