Data/hora: 11/06/2024 11:17:35

Provedor de dados: | 58
País: | Brazil
Título: | Histopathology of cotton bollworm midgut infected with Helicoverpa armigera cytoplasmic polyhedrosis virus
Autores: | Marzban,Rasoul; He,Qian; Zhang,Qingwen; Liu,Xiao Xia.
Data: | 2013-12-01
Ano: | 2013
Palavras-chave: | Cytoplasmic polyhedrosis virus; Helicoverpa armigera; Histopathology; HaCPV.
Resumo: | This research was carried out to examine cytopathological effects of Helicoverpa armigera Cytoplasmic polyhedrosis virus (HaCPV) on infected midgut cotton bollworm (Helicoverpa armigera) using transmission and scanning electron microscope. The symptoms on infected host larvae of the host, compared with healthy ones, were getting swollen with milky-white and fragile Histopathological examinations showed infection with HaCPV small polyhedral inclusion bodies (PIB) after 1 or 2 days which were observed in columnar cells of midgut. Virions were partially or completely occupied in a polyhedral matrix to form polyhedral inclusion bodies (PIB) at periphery of virogenic stroma. PIBs were measured 0.5 to 3.5 mm and virions about 46 nm in diameter. Microvilli of infected columnar cells were affected and degenerated immediately prior to rupture of the cell. Some infected columnar cells ruptured to release PIB into the gut lumen 3 days after infection. In addition,PIB were found in goblet cells, 5 or 6 days after infection. Infected goblet cells degenerate to such an extent that only a few of the original microvillus-like cytoplasmic projections and cell organells were left. These cytopathic effects caused in the midgut by HaCPV on cotton bollworm larvae are essentially similar to those have been reported for lepidoperan and dipteran infection by CPV.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400029
Editor: | Sociedade Brasileira de Microbiologia
Relação: | 10.1590/S1517-83822013000400029
Formato: | text/html
Fonte: | Brazilian Journal of Microbiology  v.44 n.4 2013
Fonte: | info:eu-repo/semantics/openAccess