scholarly journals Truncation of a P1 leader proteinase facilitates potyvirus replication in a non-permissive host

2018 ◽  
Vol 19 (6) ◽  
pp. 1504-1510 ◽  
Author(s):  
Hongying Shan ◽  
Fabio Pasin ◽  
Ioannis E. Tzanetakis ◽  
Carmen Simón-Mateo ◽  
Juan Antonio García ◽  
...  
Keyword(s):  
Permissive Host

scholarly journals Life Span of a Parapoxvirus Ovis Vector and Local Immune Activation in a Non-Permissive Host

2017 ◽  
Vol 08 (05) ◽  
Author(s):  
H Von Buttlar ◽  
M Protschka ◽  
M Muhsen ◽  
G Köhler ◽  
H Lang ◽  
...  
Keyword(s):  
Life Span ◽  
Immune Activation ◽  
Permissive Host ◽  
Parapoxvirus Ovis

Obligatory multiparasitism in the tussock moth,Orgyia leucostigma

Parasitology ◽  
1985 ◽  
Vol 90 (1) ◽  
pp. 1-10 ◽  
Author(s):  
D. Guzo ◽  
D. B. Stoltz
Keyword(s):  
Immune Response ◽  
Viral Genome ◽  
Cross Linking ◽  
Viral Dna ◽  
Permissive Host ◽  
Tussock Moth ◽  
Complete Development ◽  
Orgyia Leucostigma ◽  
Cotesia Melanoscela

Orgyia leucostigmahaemocytes were able to encapsulate and destroy eggs ofHyposoterspecies, thereby preventing successful parasitism. When host larvae had previously been parasitized byCotesia melanoscela, however, this response was not observed, and 3 differentHyposoterspecies could be reared to maturity in the normally non-permissive host. Appropriate injection experiments established thatC. melanoscelavirus and venom were both required in order for successful parasitism byHyposoterto occur. Covalent cross-linking ofC. melanoscelaviral DNA led to an immune response againstHyposoterlarvae, but not eggs, suggesting that an active viral genome may be required for complete development ofHyposoterspecies in tussock moth larvae.

scholarly journals The nucleotide sequence of the region ofsrcgene deletion in transformation-defective Rous sarcoma virus adapted to semi-permissive host cells

1989 ◽  
Vol 17 (8) ◽  
pp. 3294-3294 ◽  
Author(s):  
V.I. Kashuba ◽  
S.V. Zubak ◽  
A.V. Rynditch ◽  
V.M. Kavsan ◽  
I. Hlozanek ◽  
...  
Keyword(s):  
Nucleotide Sequence ◽  
Rous Sarcoma Virus ◽  
Host Cells ◽  
Permissive Host ◽  
Rous Sarcoma ◽  
Sarcoma Virus

scholarly journals Nucleotide sequence of LTR-gag region of Rous sarcoma virus adapted to semi-permissive host

1990 ◽  
Vol 18 (18) ◽  
pp. 5552-5552
Author(s):  
Vladimir I. Kashuba ◽  
Serge V. Zubak ◽  
Vadim M. Kavsan ◽  
Alla V. Rynditch ◽  
Ivo Hlozanek
Keyword(s):  
Nucleotide Sequence ◽  
Rous Sarcoma Virus ◽  
Permissive Host ◽  
Rous Sarcoma ◽  
Sarcoma Virus

scholarly journals Genetic Variation and Biological Activity of Two Closely Related Alphabaculoviruses during Serial Passage in Permissive and Semi-Permissive Heterologous Hosts

Viruses ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 660
Author(s):  
Belda ◽  
Beperet ◽  
Williams ◽  
Caballero
Keyword(s):  
Host Range ◽  
Biological Activities ◽  
Phylogenetic Analyses ◽  
Serial Passage ◽  
Restriction Endonuclease Analysis ◽  
Mamestra Brassicae ◽  
Virus Species ◽  
Initial Inoculum ◽  
Permissive Host ◽  
Multiple Nucleopolyhedrovirus

Phylogenetic analyses suggest that Mamestra brassicae multiple nucleopolyhedrovirus (MbMNPV) and Helicoverpa armigera multiple nucleopolyhedrovirus (HearMNPV) may be strains of the same virus species. Most of the studies comparing their biological activities have been performed in their homologous hosts. A comparison of host range and stability in alternative hosts was performed. The host range of these viruses was compared using high concentrations of inoculum to inoculate second instars of six species of Lepidoptera. One semi-permissive host (Spodoptera littoralis) and one permissive host (S. exigua) were then selected and used to perform six serial passages involving a concentration corresponding to the ~25% lethal concentration for both viruses. Restriction endonuclease analysis showed fragment length polymorphisms in every host-virus system studied. In S. littoralis, serial passage of MbMNPV resulted in decreased pathogenicity and an increase in speed-of-kill, whereas no significant changes were detected for HearMNPV with respect to the initial inoculum. In contrast, both viruses showed a similar trend in S. exigua. These results highlight the low genetic diversity and a high phenotypic stability of HearMNPV with respect to the original inoculum after six successive passages in both insect hosts. This study concludes that host-baculovirus interactions during serial passage are complex and the process of adaptation to a novel semi-permissive host is far from predictable.

scholarly journals The nucleotide sequence of the region of sre gene deletion in transformation-defective Rous sarcoma virus adapted to semi-permissive host cells

1989 ◽  
Vol 17 (5) ◽  
pp. 2120-2120
Author(s):  
V.I Kashuba ◽  
S.V. Zubak ◽  
A.V. Rynditch ◽  
V.M. Kavsan ◽  
I Hlozanek ◽  
...  
Keyword(s):  
Nucleotide Sequence ◽  
Rous Sarcoma Virus ◽  
Gene Deletion ◽  
Host Cells ◽  
Permissive Host ◽  
Rous Sarcoma ◽  
Sarcoma Virus

scholarly journals Assessment of Akodon cursor (Rodentia, Sigmodontinae) as permissive host to Schistosoma mansoni infection: morphology of adult worms

2011 ◽  
Vol 56 (2) ◽  
Author(s):  
José Machado-Silva ◽  
Renata Neves ◽  
Rosângela Rodrigues-Silva ◽  
Regina Oliveira ◽  
Arnaldo Júnior
Keyword(s):  
Schistosoma Mansoni ◽  
Laser Scanning ◽  
Natural Infection ◽  
Laser Scanning Confocal Microscopy ◽  
Laboratory Mice ◽  
Wild Rodent ◽  
Permissive Host ◽  
Scanning Confocal Microscopy ◽  
Parasitic Helminths ◽  
Rodent Populations

AbstractThe natural infection with parasitic helminths is common in wild rodent populations. Once such interactions are better understood in the laboratory, it will be more feasible to extend the findings to infected hosts in nature. The flukes recovered from laboratory-infected Akodon cursor at 63 days post-infection were stained with hydrochloric carmine and individually mounted on glass slide as whole-mounts. Light and laser scanning confocal microscopy studies of adult male and female Schistosoma mansoni are reported. The parasites were examined morphologically and biometrically, which was obtained in a digital system for image analysis. Parameters used were: tegument thickness, digestive, excretory and reproductive systems. The overall conclusion of this experiment is that the morphological features of adult worm were similar to laboratory mice. It has been confirmed that the grass mouse is a permissive host to S. mansoni infection.

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