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Identification of an aphid-transmitted cowpea mosaic virus

Identificatie van een door bladluizen overgebrachtVigna-mozaïekvirus

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Abstract

A virus disease of cowpea widespread in North Italy has been found to be caused by a virus which has the following properties: a. rod-shaped particles about 750 mµ in length; b. serological affinity with bean common mosaic virus; c. aphid-transmission; d. seed-transmission in cowpea at a percentage of 0.3–1.59; e. fairly wide host range covering 19 species representing 13 genera and 6 families; f. dilution end-point 1:4000; g. thermal inactivation point 60–62°C; h. longevity in vitro 5 days. The virus is tentatively called “cowpea aphid-borne mosaic virus”.

Samenvatting

Van een in Noord-Italië veel voorkomende en soms zeer schadelijke mozaïekziekte vanVigna unguiculata (fig. 1) werd aangetoond dat deze door een virus wordt veroorzaakt. Het virus heeft draadvormige deeltjes van ongeveer 750 mµ lengte en vertoont serologische verwantschap met het rolmozaïekvirus van boon. Het wordt verspreid door bladluizen en kon hiermee of met sap kunstmatig worden overgebracht op 19 plantesoorten uit 13 geslachten en 6 families (fig. 2–4). InVigna gaat het virus voor 0,3–1,59% over met zaad. Het verdunningseindpunt van het virus in uitgeperst sap bedroeg 1:4000, het thermale inactiveringspunt 60–62°C en de houdbaarheid in vitro vijf dagen. Aan het virus werd voorlopig de naam “Cowpea aphid-borne mosaic virus” gegeven.

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Authors and Affiliations

  1. Impresa Centro Nazionale sui Virus dei Vegetali del Consiglio Nazionale delle Ricerche Sezione III, Istituto di Entomologia della Università di Torino, Italy

    O. Lovisolo & M. Conti

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  1. O. Lovisolo
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  2. M. Conti
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Papers on virus diseases of the Working Group of the Italian National Research Council: LXXXV. Paper presented at the 2nd Meeting of the International Working Group on Legume Viruses, Wageningen, July 10, 1965. Pubblicazione N. 103 del “Centro di Entomologia alpina e forestale del Consiglio Nazionale delle Ricerche” (diretto dal Prof. Athos Goidanich).

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Lovisolo, O., Conti, M. Identification of an aphid-transmitted cowpea mosaic virus. Netherlands Journal of Plant Pathology 72, 265–269 (1966). https://doi.org/10.1007/BF02650216

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