Faulkner P, Kuzio J, Williams GV, et al. Analysis of p74, a PDV envelope protein of Autographa californica nucleopolyhedrovirus required for occlusion body infectivity in vivo[J]. J Gen Virol, 1997, 78（Pt 12）：3091-3100.
[2]
Garcia-Maruniak A, Abd-Alla AM, Salem TZ, et al. Two viruses that cause salivary gland hypertrophy in Glossina pallidipes and Musca domestica are related and form a distinct phylogenetic clade[J]. J Gen Virol, 2009, 90：334-346.
[3]
Bezier A, Annaheim M, Herbiniere J, et al. Polydnaviruses of braconid wasps derive from an ancestral nudivirus[J]. Science, 2009, 323：926-930.
[4]
Yao L, Zhou W, Xu H, et al. The Heliothis armigera single nucleocapsid nucleopolyhedrovirus envelope protein P74 is required for infection of the host midgut[J]. Virus Res, 2004, 104：111-121.
[5]
Slack JM, Lawrence SD, Krell PJ, et al. Trypsin cleavage of the baculovirus occlusion-derived virus attachment protein P74 is prerequisite in per os infection[J]. J Gen Virol, 2008, 89：2388-2397.
[6]
Slack JM, Lawrence SD, Krell PJ, et al. A soluble form of P74 can act as a per os infectivity factor to the Autographa californica multiple nucleopolyhedrovirus[J]. J Gen Virol, 2010, 91：915-918.
[7]
Peng K, van Lent JW, Vlak JM, et al. In situ cleavage of baculovirus occlusion-derived virus receptor binding protein P74 in the peroral infectivity complex[J]. J Virol, 2011, 85：10710-10718.
[8]
Wang L, Salem TZ, Campbell DJ, et al. Characterization of a virion occlusion-defective Autographa californica multiple nucleopolyhedrovirus mutant lacking the p26, p10 and p74 genes[J]. J Gen Virol, 2009, 90：1641-1648.
[9]
Peng K, van Lent JW, Boeren S, et al. Characterization of novel components of the baculovirus per os infectivity factor complex[J]. J Virol, 2012, 86：4981-4988.
[10]
Peng K, van Oers MM, Hu Z, et al. Baculovirus per os infectivity factors form a complex on the surface of occlusion-derived virus[J]. J Virol, 2010, 84：9497-9504.
[11]
Kikhno I, Gutierrez S, Croizier L, et al. Characterization of pif, a gene required for the per os infectivity of Spodoptera littoralis nucleopolyhedrovirus[J]. J Gen Virol, 2002, 83：3013-3022.
[12]
Pijlman GP, Pruijssers AJ, Vlak JM. Identification of pif-2, a third conserved baculovirus gene required for per os infection of insects[J]. J Gen Virol, 2003, 84：2041-2049.
[13]
Wang Y, Kleespies RG, Huger AM, et al. The genome of Gryllus bimaculatus nudivirus indicates an ancient diversification of baculovirus-related nonoccluded nudiviruses of insects[J]. J Virol, 2007, 81：5395-5406.
[14]
Xu HJ, Yang ZN, Wang F, et al. Bombyx mori nucleopolyhedrovirus ORF79 encodes a 28-kDa structural protein of the ODV envelope[J]. Arch Virol, 2006, 151：681-695.
[15]
Fang M, Nie Y, Harris S, et al. Autographa californica multiple nucleopolyhedrovirus core gene ac96 encodes a per os infectivity factor（PIF-4）[J]. J Virol, 2009, 83：12569-12578.
[16]
Deng F, Wang R, Fang M, et al. Proteomics analysis of Helicoverpa armigera single nucleocapsid nucleopolyhedrovirus identified two new occlusion-derived virus-associated proteins, HA44 and HA100[J]. J Virol, 2007, 81：9377-9385.
[17]
Perera O, Green TB, Stevens SM Jr, et al. Proteins associated with Culex nigripalpus nucleopolyhedrovirus occluded virions[J]. J Virol, 2007, 81：4585-4590.
[18]
Wang XF, Zhang BQ, Xu HJ, et al. ODV-associated proteins of the Pieris rapae granulovirus[J]. J Proteome Res, 2011, 10：2817-2827.
[19]
Xu F, Ince IA, Boeren S, et al. Protein composition of the occlusion derived virus of Chrysodeixis chalcites nucleopolyhedrovirus[J]. Virus Res, 2011, 158：1-7.
[20]
Wang R, Deng F, Hou D, et al. Proteomics of the Autographa californica nucleopolyhedrovirus budded virions[J]. J Virol, 2010, 84：7233-7242.
[21]
Harrison RL, Bonning BC. Application of maximum-likelihood mo-dels to selection pressure analysis of group I nucleopolyhedrovirus genes[J]. J Gen Virol, 2004, 85：197-210.
[22]
Braunagel SC, He H, Ramamurthy P, et al. Transcription, translation, and cellular localization of three Autographa californica nuclear polyhedrosis virus structural proteins：ODV-E18, ODV-E35, and ODV-EC27[J]. Virology, 1996, 222,:100-114.
[23]
Wang D, Zhang CX. HearSNPV orf83 encodes a late, nonstructural protein with an active chitin-binding domain[J]. Virus Res, 2006, 117：237-243.
[24]
Lapointe R, Popham HJ, Straschil U, et al. Characterization of two Autographa californica nucleopolyhedrovirus proteins, Ac145 and Ac150, which affect oral infectivity in a host-dependent manner[J]. J Virol, 2004, 78：6439-6448.
[25]
Zhang JH, Ohkawa T, Washburn JO, et al. Effects of Ac150 on virulence and pathogenesis of Autographa californica multiple nucleopolyhedrovirus in noctuid hosts[J]. J Gen Virol, 2005, 86：1619-1627.
[26]
Russell RL, Rohrmann GF. Characterization of P91, a protein asso-ciated with virions of an Orgyia pseudotsugata baculovirus[J]. Virology, 1997, 233：210-223.
[27]
Xiang X, Shen Y, Yang R, et al. Bombyx mori nucleopolyhedrovirus BmP95 plays an essential role in budded virus production and nucleocapsid assembly[J]. J Gen Virol, 2013, 94：1669-1679.
[28]
Zhu S, Wang W, Wang Y, et al. The baculovirus core gene ac83 is required for nucleocapsid assembly and per os infectivity of Autographa californica nucleopolyhedrovirus[J]. J Virol, 2013, 87：10573-10586.
[29]
Shi SL, Pan MH, Lu C. Characterization of Antheraea pernyi nucleopolyhedrovirus p11 gene, a homologue of Autographa californica nucleopolyhedrovirus orf108[J]. Virus Genes, 2007, 35：97-101.
[30]
Simon O, Palma L, Williams T, et al. Analysis of a naturally-occurring deletion mutant of Spodoptera frugiperda multiple nucleopolyhedrovirus reveals sf58 as a new per os infectivity factor of lepidopteran-infecting baculoviruses[J]. J Invertebr Pathol, 2012, 109：117-126.
[31]
Zhou W, Yao L, Xu H, et al. The function of envelope protein P74 from Autographa californica multiple nucleopolyhedrovirus in primary infection to host[J]. Virus Genes, 2005, 30：139-150.
[32]
Wang Y, Jehle JA. Nudiviruses and other large, double-stranded circular DNA viruses of invertebrates：new insights on an old topic[J]. J Invertebr Pathol, 2009, 101：187-193.
[33]
Hou D, Zhang L, Deng F, et al. Comparative proteomics reveal fundamental structural and functional differences between the two progeny phenotypes of a baculovirus[J]. J Virol, 2013, 87：829-839.
[34]
Slack JM, Dougherty EM, Lawrence SD. A study of the Autographa californica multiple nucleopolyhedrovirus ODV envelope protein p74 using a GFP tag[J]. J Gen Virol, 2001, 82：2279-2287.
[35]
Haas-Stapleton EJ, Washburn JO, Volkman LE. P74 mediates specific binding of Autographa californica M nucleopolyhedrovirus occlusion-derived virus to primary cellular targets in the midgut epithelia of Heliothis virescens larvae[J]. J Virol, 2004, 78：6786-6791.
[36]
Alfonso V, Lopez MG, Carrillo E, et al. Surface display of AcMNPV occlusion-derived P74 does not enhance oral infectivity of budded viruses[J]. Intervirology, 2012, 55：247-251.
[37]
Ohkawa T, Washburn JO, Sitapara R, et al. Specific binding of Autographa californica M nucleopolyhedrovirus occlusion-derived virus to midgut cells of Heliothis virescens larvae is mediated by products of pif genes Ac119 and Ac022 but not by Ac115[J]. J Virol, 2005, 79：15258-15264.
[38]
Cheng CH, Liu SM, Chow TY, et al. Analysis of the complete genome sequence of the Hz-1 virus suggests that it is related to members of the Baculoviridae[J]. J Virol, 2002, 76：9024-9034.
[39]
Fang M, Nie Y, Wang Q, et al. Open reading frame 132 of Helicoverpa armigera nucleopolyhedrovirus encodes a functional per os infectivity factor（PIF-2）[J]. J Gen Virol, 2006, 87：2563-2569.
[40]
Huang H, Wang M, Deng F, et al. ORF85 of HearNPV encodes the per os infectivity factor 4（PIF4）and is essential for the formation of the PIF complex[J]. Virology, 2012, 427：217-223.
[41]
Braunagel SC, Russell WK, Rosas-Acosta G, et al. Determination of the protein composition of the occlusion-derived virus of Autographa californica nucleopolyhedrovirus[J]. Proc Natl Acad Sci USA, 2003, 100：9797-9802.
[42]
Sparks WO, Harrison RL, Bonning BC. Autographa californica multiple nucleopolyhedrovirus ODV-E56 is a per os infectivity factor, but is not essential for binding and fusion of occlusion-derived virus to the host midgut[J]. Virology, 2011, 409：69-76.
[43]
Xiang X, Chen L, Guo A, et al. The Bombyx mori nucleopolyhedro-virus（BmNPV）ODV-E56 envelope protein is also a per os infect-ivity factor[J]. Virus Res, 2011, 155：69-75.
[44]
Harrison RL, Sparks WO, Bonning BC. Autographa californica multiple nucleopolyhedrovirus ODV-E56 envelope protein is required for oral infectivity and can be substituted functionally by Rachiplusia ou multiple nucleopolyhedrovirus ODV-E56[J]. J Gen Virol, 2010, 91：1173-1182.
[45]
Xu HJ, Yang ZN, Zhao JF, et al. Bombyx mori nucleopolyhedrovirus ORF56 encodes an occlusion-derived virus protein and is not essential for budded virus production[J]. J Gen Virol, 2008, 89：1212-1219.
[46]
Nie Y, Fang M, Erlandson MA, et al. Analysis of the Autographa californica multiple nucleopolyhedrovirus overlapping gene pair lef3 and ac68 reveals that AC68 is a per os infectivity factor and that LEF3 is critical, but not essential, for virus replication[J]. J Virol, 2012, 86：3985-3994.
[47]
Li G, Wang J, Deng R, et al. Characterization of AcMNPV with a deletion of ac68 gene[J]. Virus Genes, 2008, 37：119-127.
[48]
Hong T, Braunagel SC, Summers MD. Transcription, translation, and cellular localization of PDV-E66：a structural protein of the PDV envelope of Autographa californica nuclear polyhedrosis virus[J]. Virology, 1994, 204：210-222.
[49]
Hong T, Summers MD, Braunagel SC. N-terminal sequences from Autographa californica nuclear polyhedrosis virus envelope proteins ODV-E66 and ODV-E25 are sufficient to direct reporter proteins to the nuclear envelope, intranuclear microvesicles and the envelope of occlusion derived virus[J]. Proc Natl Acad Sci USA, 1997, 94：4050-4055.
[50]
Braunagel SC, Burks JK, Rosas-Acosta G, et al. Mutations within the Autographa californica nucleopolyhedrovirus FP25K gene decrease the accumulation of ODV-E66 and alter its intranuclear transport[J]. J Virol, 1999, 73：8559-8570.
[51]
Braunagel SC, Williamson ST, Saksena S, et al. Trafficking of ODV-E66 is mediated via a sorting motif and other viral proteins：facilitated trafficking to the inner nuclear membrane[J]. Proc Natl Acad Sci USA, 2004, 101：8372-8377.
[52]
Xiang X, Chen L, Hu X, et al. Autographa californica multiple nucleopolyhedrovirus odv-e66 is an essential gene required for oral infectivity[J]. Virus Res, 2011, 158：72-78.
[53]
Peng K, Wu M, Deng F, et al. Identification of protein-protein interactions of the occlusion-derived virus-associated proteins of Helicoverpa armigera nucleopolyhedrovirus[J]. J Gen Virol, 2010, 91：659-670.
[54]
Vigdorovich V, Miller AD, Strong RK. Ability of hyaluronidase 2 to degrade extracellular hyaluronan is not required for its function as a receptor for jaagsiekte sheep retrovirus[J]. J Virol, 2007, 81：3124-3129.
[55]
Sugiura N, Setoyama Y, Chiba M, et al. Baculovirus envelope protein ODV-E66 is a novel chondroitinase with distinct substrate specificity[J]. J Biol Chem, 2011, 286：29026-29034.
[56]
Dall D, Luque T, O’Reilly D. Insect-virus relationships：sifting by informatics[J]. Bioessays, 2001, 23：184-193.
[57]
Hao B, Huang J, Sun X, et al. Variants of open reading frame Bm126 in wild-type Bombyx mori nucleopolyhedrovirus isolates exhibit functional differences[J]. J Gen Virol, 2009, 90：153-161.
[58]
Tang Q, Li G, Yao Q, et al. Bm91 is an envelope component of ODV but is dispensable for the propagation of Bombyx mori nucleopolyhedrovirus[J]. J Invertebr Pathol, 2013, 113：70-77.
