Abstract
An attempt was made to identify a mosaic disease inHippeastrum hybridum. Infectious virus material could be demonstrated in roots, leaves, stem, perianth, stamen and pistil. Inclusion bodies were found in the epidermis of leaves, stem, spatha leaves and in the perianth. Virus concentration in a young stage was high but decreased by aging of the perianth. Efforts to transmit the virus by aphids failed. However, the virus was transmitted by seed in a few cases. Plants of 30 species reacted negatively upon inoculation with the virus.Hippeastrum hybridum, Gomphrena globosa, Chlorophytum spec. andLycopersicum esculentum could be infected experimentally. On account of the host range and presence of inclusion bodies the mosaic symptoms inHippeastrum are not caused by tomato spotted wilt virus or Cucumber mosaic virus. Results suggest that the virus under investigation is theHippeastrum mosaic virus. Dr.M. K. Corbett, Wageningen, succeeded in purifying the virus by density gradient centrifugation. Whe preparation contained flexuous rod particles. Plants ofDatura stramonium, Nicotiana glutinosa andN. tabacum ‘Samsun’ could be infected. Within two weeks after inoculation with purified virus solution these plants showed systemic symptoms.
Samenvatting
In een kwekerij te Hoorn werden planten vanHippeastrum hybridum aangetroffen, die mozaïekverschijnselen vertoonden. De oorzaak hiervan werd nagegaan. Infectieus virusmateriaal kon worden aangetoond in wortels, bladeren, bloemstengel, bloemdekbladen, meeldraden en stijl. Celinsluitsels kwamen voor in de epidermis van bladeren en stengel en in de bloemschede. De aanwezigheid van insluitsels in het bloemdek was afhankelijk van de ouderdom van de bloem. Er schijnt een omgekeerd evenredige relatie te bestaan tussen de virusconcentratie en het aantal insluitsels in bloemen.
Pogingen om het virus over te brengen door bladluizen mislukten. In enkele gevallen had zaadoverdracht plaats.
Dertig plantesoorten reageerden negatief op een inoculatie met virushoudend sap.Hippeastrum hybridum, Gomphrena globosa, Chlorophytum spec. enLycopersicum esculentum konden wel worden geïnfecteerd. Gezien de waardplantenreeks en het voorkomen van celinsluitsels kunnen de mozaïeksymptomen inHippeastrum niet toegeschreven worden aan „Tomato spotted wilt”-virus of het komkommer-mozaïek-virus, maar is het waarschijnlijk dat zij worden veroorzaakt door hetHippeastrum-mozaïek-virus, reeds beschreven doorBrierley (1948),Johnson (1951) enProcenko & Procenko (1964).
Dr.M. K. Corbett, Wageningen, slaagde erin het virus te zuiveren door middel van „density gradient”-centrifugering.Datura stramonium, N. glutinosa enN. tabacum ‘Samsun’ werden systemisch ziek binnen twee weken na inoculatie met de gezuiverde virus-oplossing.
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Hendrina Brants, D., van den Heuvel, J. Investigation ofHippeastrum mosaic virus inHippeastrum hybridum . Netherlands Journal of Plant Pathology 71, 145–151 (1965). https://doi.org/10.1007/BF01987405
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DOI: https://doi.org/10.1007/BF01987405