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Polydnavirus genomes reflect their dual roles as mutualists and pathogens.
TLDR
It is concluded that the similar organizational features of PDV genomes reflect their shared life cycle but that PDVs associated with ichneumonid and braconid wasps have likely evolved different strategies to cause disease in the wasp's host and promote parasitoid survival. Expand
Parasitism-linked block of host plasma melanization.
TLDR
This study demonstrates that the CsIV-mediated inhibition of melanization is associated with reduction in the enzymatic activity and protein titer of key enzymes in the melanization pathway, phenoloxidase, dopachrome isomerase, and DOPA decarboxylase. Expand
Polydnavirus infection inhibits translation of specific growth-associated host proteins.
  • K. Shelby, B. Webb
  • Biology, Medicine
  • Insect biochemistry and molecular biology
  • 1 March 1997
TLDR
The wasp Campoletis sonorensis injects a polydnavirus (CsPDV) along with its egg during parasitization of Heliothis virescens larvae, and the effect of this translational discrimination is to shunt host resources away from larval growth and adult development, which presumably makes them available to the developing endoparasitoid. Expand
Polydnavirus infection inhibits synthesis of an insect plasma protein, arylphorin.
  • K. Shelby, B. Webb
  • Biology, Medicine
  • The Journal of general virology
  • 1 September 1994
TLDR
Injection of purified virus elicited the response observed in naturally parasitized larvae, demonstrating that the effect on arylphorin synthesis is mediated, either directly or indirectly, by polydnavirus gene product(s). Expand
Polydnavirus-mediated suppression of insect immunity.
TLDR
Evidence from the Campoletis sonorensis polydnavirus system indicates that the unique genomic organization ofpolydnaviruses may have evolved to amplify the synthesis of immunosuppressive viral proteins. Expand
Polydnavirus‐mediated inhibition of lysozyme gene expression and the antibacterial response
TLDR
It is proposed that the immunodeficiencies caused by CsPDV injection are caused, in part, by the targeted translational inhibition of specific humoral immune response transcripts. Expand
Plasma phenoloxidase of the larval tobacco budworm, Heliothis virescens, is virucidal
TLDR
It is confirmed that phenoloxidase is the predominate activity in larval plasma accounting for inactivation of HzSNPV in vitro, and that PhenoloxIDase-dependent H2O2 production may contribute to this virucidal activity. Expand
Potent virucidal activity in larval Heliothis virescens plasma against Helicoverpa zea single capsid nucleopolyhedrovirus.
TLDR
In the plasma of larval lepidopterans, the enzyme phenol oxidase may act as a constitutive, humoral innate antiviral immune response, which could limit the spread of virus from initial infective foci within the haemocoel. Expand
Influence of diet on long-term cold storage of the predator Podisus maculiventris (Say) (Heteroptera: Pentatomidae)
TLDR
The results demonstrate an influence of nutrient quality on the response to cold storage at different developmental stages, and that an optimal food source for continuous rearing is not necessarily an optimalFood source for cold storage. Expand
Uptake of dietary micronutrients from artificial diets by larval Heliothis virescens.
TLDR
Metal content of pupae and plugs of the artificial diet on which they had developed from hatching was analyzed and metals were identified that might well impact the fitness of a given colony of insects in relation to their diet. Expand
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