title: Histopathology and effect on development of the PhopGV on larvae of the potato tubermoth, Phthorimaea operculella (Lepidoptera: Gelechiidae).
abstract: Larvae of the potato tubermoth (PTM), Phthorimaea operculella, feed on potato plants and tubers and are a major pest in the tropics and subtropics worldwide, causing up to 100% damage. The PTM granulovirus (PhopGV) provides significant potato protection, but little is known about its effect on larval development or its histopathology. Here we show that only 10% of larvae exited from PhopGV-treated tubers (1.4×10(8) granule/ml), lagging significantly behind controls, and most of these died by 72 h after emergence. Histopathology studies showed the fat body and epidermis were the principal tissues infected. PhopGV morphogenesis was similar to other GVs, the exception being small vesicles between mature granules.
authors.affiliation: USDA-ARS, Yakima Agricultural Research Laboratory, Wapato, WA 98951, USA. lerrylacey@yahoo.com
authors.forename: Lawrence A
authors.initials: LA
authors.lastname: Lacey
authors.forename: Darlene F
authors.initials: DF
authors.lastname: Hoffmann
authors.forename: Brian A
authors.initials: BA
authors.lastname: Federici
mesh_terms: D000818:Animals; D025722:Granulovirus / Q000502:physiology* / Q000648:ultrastructure; D007814:Larva / Q000254:growth & development / Q000648:ultrastructure / Q000821:virology; D009036:Moths / Q000254:growth & development / Q000648:ultrastructure / Q000821:virology*; D010572:Pest Control, Biological; D011198:Solanum tuberosum