Abstract
A newly recognized disease of tulip called veinal streak is described. The disorder occurs more often in tulips grown under glass than in the field, but totally diseased stocks are found under both conditions. When sap from tulip leaves with veinal streak was manually inoculated to test species, no virus isolate was obtained whereas the sap clarified with a mixture of n-butanol and chloroform and concentrated by centrifugation consistently gave isolates of tobacco ringspot virus (TRSV). However, TRSV was also obtained from symptomless and diseased tulips infected with other viruses. Isolates were propagated inNicotiana tabacum ‘White Burley’ and sap from systemically infected leaves was used for serological identification in microprecipitin tests. It is postulated that TRSV is the cause of tulip veinal streak. Generally the virus is latent in tulips. The development of symptoms is associated with particular environmental growing conditions (Asjes and Muller, 1972).
Samenvatting
Een nieuw herkende ziekte in tulpen, genoemd de nerven- of strepenziekte, wordt beschreven. De ziekte treedt meer op in tulpen in de kas dan te velde, doch totaal zieke partijen worden onder beide omstandigheden gevonden. Wanneer sap van tulpebladeren met de nervenziekte mechanisch geïnoculeerd werd op toetsplanten, kon geen virus-isolatie worden verkregen. Het sap gedeeltelijk gezuiverd met een mengsel van n-butanol en chloroform en door centrifugering geconcentreerd gaf steeds weer isolaties van het tabakskringvlekkenvirus (TRSV). Het virus werd echter ook verkregen van symptoomloze planten en zieke tulpen die geïnfecteerd waren met andere virussen. Isolaties werden vermeerderd inNicotiana tabacum ‘White Burley’ en sap van systemisch geïnfecteerde bladeren werd gebruikt voor serologische identificatie in microprecipitatietoetsen. Aangenomen wordt dat TRSV de oorzaak is van de nerven- of strepenziekte van tulpen. Gewoonlijk is het virus latent in tulpen aanwezig. De ontwikkeling van de symptomen gaat samen met bijzondere groeiomstandigheden (Asjes and Muller, 1972).
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Asjes, C.J. Tulip veinal streak, a disorder probably caused by tobacco ringspot virus. Netherlands Journal of Plant Pathology 78, 19–28 (1972). https://doi.org/10.1007/BF01976379
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DOI: https://doi.org/10.1007/BF01976379