Investigating the Presence of Biotic Agents Associated with Mundulla Yellows.

The role of biotic agents in the dieback syndrome Mundulla Yellows (MY) was investigated by analysis of 40 Eucalyptus camaldulensis, E. leucoxylon, or E. cladocalyx trees and soil samples from South Australia and Victoria, Australia.

Outbreak of Clover yellow vein virus in a Bean Field in Colusa County, California.

In 1999, a severe outbreak (i.e., 100% infection) of a virus disease was observed in a single field of common bean in Colusa County, CA.

Virions of Heliothis armigera entomopoxvirus contain a homologue of the vaccinia VP8 major core protein.

An antigenic 30 K virion protein of Heliothis armigera entomopoxvirus (HaEPV) has been identified as a homologue of the chordopoxvirus (ChPV) VP8 major virion core protein. Like its homologue in vaccinia virus, the mature HaEPV 30 K protein is derived by post-translational cleavage of a precursor at a conserved AGA motif. The HaEPV 30 K protein is the first EPV structural virion protein to be described, and elucidation of its characteristics provides evidence for the assumption that morphological similarities observed between virions of the sub-families Entomopoxvirinae and Chordopoxvirinae by microscopy reflect corresponding similarities at a molecular level.