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Association of Double-stranded RNA and Filamentous Viruslike Particles with Dodonaea Yellows Disease. Wayne B. Borth, Graduate Research Assistant, Department of Plant Pathology, University of Hawaii, Honolulu 96822. Donald E. Gardner, and Thomas L. German. Research Plant Pathologist, National Park Service, Cooperative Park Studies Unit, Department of Botany, and Associate Professor, Department of Plant Pathology, University of Hawaii, Honolulu 96822. Plant Dis. 74:434-437. Accepted for publication 7 November 1989. This article is in the public domain and not copyrightable. It may be freely reprinted with customary crediting of the source. The American Phytopathological Society, 1990. DOI: 10.1094/PD-74-0434.

Dodonaea viscosa in the Hawaiian Islands is affected by a severe yellowing disease with symptoms resembling those of diseases caused by mycoplasmalike organisms in other woody hosts. Double-stranded RNA with an estimated molecular weight of 3 106 was detected in plants displaying disease symptoms but not in asymptomatic plants. Viruslike particles 16 nm in diameter and 700 nm in modal length were also isolated from diseased plants but were not present in extracts of healthy plants.

Keyword(s): MLO diseases.