AI Article Synopsis

  • Little cherry disease (LChD) affects sweet cherry production in western North America, with the apple mealybug as the main vector.
  • Researchers isolated filamentous virus particles from LChD-infected trees, revealing single-stranded RNA linked to the disease's double-stranded RNA.
  • The virus has similarities to the closterovirus genus and is closely related to the RNA polymerase of a virus found in grapes, but has distinct characteristics compared to European strains associated with similar diseases.

Article Abstract

ABSTRACT Little cherry disease (LChD) is a serious economic problem of sweet cherry production in western North America where apple mealybug is the principle vector. LChD is associated with a distinct species of double-stranded (ds) RNA. In this study, filamentous virus particles were purified from LChD-infected trees and shown to contain single-stranded RNA corresponding to the previously reported dsRNA isolated from infected trees. The virus particles were characterized and were similar to monopartite members of the genus Closterovirus. A portion of the genome was sequenced and found to be most closely related to the RNA-dependent RNA polymerase of Grapevine leafroll-associated virus-3, a mealybug-transmitted closterovirus. The characteristics of the mealybug-transmitted Little cherry virus in North America are very different from those of a closterovirus associated with a similar disease in Europe.

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Source
http://dx.doi.org/10.1094/PHYTO.2001.91.3.268DOI Listing

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