Data/hora: 07/06/2024 17:08:17

Biblioteca(s): | Embrapa Soja.
Data corrente: | 01/12/1992
Data da última atualização: | 01/12/1992
Autoria: | GALLO, L. G.; CORSARO, B. G.; HUGHES, P. R.; GRANADOS, R. R.
Afiliação: | Boyce Thompson Institute for Plant Research at Cornell University, Tower Road, Ithaca, New York 14853.
Título: | In vivo enhancement of baculovirus infection by the viral enhancing factor of a granulosis virus of the cabbage looper, Trichoplusia ni (Lepidoptera: Noctuidade).
Ano de publicação: | 1991
Fonte/Imprenta: | Journal of Invertebrate Pathology, v.58, p.203-210, 1991.
Idioma: | Inglês
Conteúdo: | The ability of the viral enhancing factor (VEF) from Trichoplusia ni granulosis virus to enhance the infectivity of Autographa californica multiply enveloped nuclear polyhedrosis virus (AcMNPV) was measured in mid-fourth instar T. ni bioassays. In dose-response bioassays with a constant AcMNPV dose and VEF concentrations varying from 1 to 40 ng/larba, mortality increased linearly with the log dose of VEF from 20.8 to 93.1%. Reciprocal bioassays in which the dose of VEF was constant while that of the virus was varied yielded parallel dose response lines with a calculated potency ratio (LD 50 for virus alone/LD 50 for virus + VEF) of 3. In addition to increasing mortality, 40 ng of VEF significantly reduced median survival times of LD 20 and LD 90 doses of AcMNPV by 9.5 and 10.7 hr, respectively. VEF also enhanced AcMNPV in neonates of T. ni. Increased susceptibility of T. ni larvae to T. ni sigly enveloped nuclear polyhedrosis virus (a potency ratio of 16 with 40 ng of VEF), and Anticarsia gemmatalis multiply enveloped nuclear polydrosis virus (a potency ratio of ca. 10.0 with 40 ng of VEF) was also demonstrated.
Palavras-Chave: | AcMNPV; AgMNPV; Bioassay; Granulosis virus; TnSNPV; Viral enhancing factor (VEF).
Thesagro: | Baculovirus; Trichoplusia Ni.
Thesaurus Nal: | biological control.
Categoria do assunto: | --
Registro original: | Embrapa Soja (CNPSO)
Exemplares: | CNPSO - (13706-1) - ADC - SP - -- - 9907 -  - 9907 - DIS