KMID : 0545120070170040632
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Journal of Microbiology and Biotechnology 2007 Volume.17 No. 4 p.632 ~ p.637
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A Cytoplasmic Polyhedrosis Virus Isolated from the Pine Processionary Caterpillar, Thaumetopoea pityocampa
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Ince Ikbal-Agah
Demir Ismail Demirbag Zihni Nalcacioglu Remziye
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Abstract
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A cytoplasmic polyhedrosis virus (CPV) was isolated from the larvae of Thaumetopoea pityocampa and shown to cause an infection of midgut cells. This viral infection revealed several important diagnostic symptoms, including discoloration of the posterior midgut, reduced feeding, and extended development time of the larvae. The virus infection is lethal to Thaumetopoea pityocampa, and with the increasing doses kills the larvae within 4-5 days post infection. Electron microscopy studies showed typical cytoplasmic polyhedral inclusion bodies that are icosahedral, and ranged from 2.4 to 5.3 ¥ìm in diameter. Electrophoretic analysis of the RNA genome showed that the virus has a genome composed of 10 equimolar RNA segments with the sizes of 3,907, 3,716, 3,628, 3,249, 2,726, 1,914, 1,815, 1,256, 1,058, and 899 bp, respectively. Based on morphology and nucleic acid analysis, this virus was named Thaumetopoea pityocampa cytoplasmic polyhedrosis virus (TpCPV), and belongs to the genus Cypovirus, family Reoviridae
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KEYWORD
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Thaumetopoea pityocampa, cytoplasmic polyhedrosis virus, Cypovirus, anaphylactic shock, biological control
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