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Rybicki, E.P.

Characterization of South African isolates of barley yellow dwarf virus - 1990 - Printed

19 ref

A detailed characterization of two South African isolates is given. One isolate is transmitted by Schizaphis graminum (Rondani) and is SGV-like. The other is transmitted by Rhopalosiphum padi (L.) and Diuraphis noxia (Mordvilko), and is related to PAV-like isolates. The latter has isometric particles 25 + 0.8 nm in diameter and apparent buoyant density of 1.435 g/cm3 in cesium chloride and a protein of Mr 24.5 kDa that degrades to 22.5 kDa on storage. It also contains ssRNA of Mr 1.8 MD and produces dsRNA of Mr 1.8 MD and produces dsRNA of Mr 3.4 MD in infected plants. Both isolates appear relatively vector nonspecific


English

ISBN: 968-6127-39

Subjects--Topical Terms:
Acids
Africa
Africa south of Sahara
Alkali metals
Anglophone africa
Aphididae
Aphidoidea
Arthropoda
Disease transmission
Elements
Hemiptera
Homoptera
Inorganic acid salts
Insecta
Luteoviruses
Metallic elements
Nucleic acids
Nucleic compounds
Organic acids
Pathogenesis
Pests of plants
Plant diseases
Plant viruses
Proximate composition
Salts
Southern Africa
Sternorrhyncha
Viruses

Dewey Class. No.: 91-013832