Evolutionary origin of Venturia canescens virus-like particles

Reineke, Annette, Asgari, Sassan and Schmidt, Otto (2006) Evolutionary origin of Venturia canescens virus-like particles. Archives of Insect Biochemistry And Physiology, 61 3: 123-133. doi:10.1002/arch.20113

Author Reineke, Annette
Asgari, Sassan
Schmidt, Otto
Title Evolutionary origin of Venturia canescens virus-like particles
Journal name Archives of Insect Biochemistry And Physiology   Check publisher's open access policy
ISSN 0739-4462
Publication date 2006
Sub-type Article (original research)
DOI 10.1002/arch.20113
Volume 61
Issue 3
Start page 123
End page 133
Total pages 11
Place of publication Hoboken, N.J., U.S.
Publisher Wiley-Liss
Collection year 2006
Language eng
Subject C1
0608 Zoology
060808 Invertebrate Biology
Abstract Insect host-parasitoid interactions provide fascinating examples of evolutionary adaptations in which the parasitoid employs a variety of measures and countermeasures to overcome the immune responses of its host. Maternal factors introduced by the female wasps during egg deposition play an important role in interfering with cellular and humoral components of the host's immune defence. Some of these components actively suppress host immune components and some are believed to confer protection for the developing endoparasitoid by rather passive means. The Venturio conescens/Ephestia kuehniella parrositoid-host system is unique among other systems in that the cellular defence capacity of the host remains virtually intact after parasitization. This system raises some important questions that are discussed in this mini-review: If immune protection of the egg and the emerging larva is achieved by surface properties comprising glycoproteins and virus-like particles (VLPs) produced by the female wasp, why is the prophenoloxidose activating cascade blocked in parasitized caterpillars? Another question is the evolutionary origin of these particles, given that the functional role and structural features of V. canescens VLP proteins are more related to cellular proteins than to viruses.
Keyword Venturia Canescens
Virus-like Particles
Insect Immunity
Biochemistry & Molecular Biology
Wasp Cotesia-congregata
Haemocytic Reaction
Habitual Parasite
Defence Reactions
Q-Index Code C1
Additional Notes Special Issue: Host-Parasitoid Interactions: Genomics, Evolution, and Behavioural Ecology

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Created: Wed, 15 Aug 2007, 08:44:12 EST