Abstract
Seven isolates of pea seed-borne mosaic virus (PSbMV) were compared on selectedPisum sativum L. differentials and by microprecipitin and SDS-gel serology and particle length. All isolates were characterized by 750 nm particle-length modes and were closely related serologically, but some were readily distinguished onP. sativum differentials. Isolate distinctions were of the magnitude typical for virus strains. Differentials, diversePisum germplasm from U.S. Plant Introduction accessions, provided a practical means of PSbMV strain differentiation.
Samenvatting
Tussen 1966 en 1970 zijn in verschillende landen virussen gerapporteerd, die bij erwt met zaad overgaan, maar in verschillende opzichten leken te verschillen. Isolaten uit Japan en de USA bleken serologisch nauw aan elkaar verwant, zo niet identiek te zijn. Daarom werd de internationale naam ‘pea seed-borne mosaic virus’ voorgesteld. In Nederland was het virus beschreven onder de naam erwterolmozaïekvirus.
Zeven isolaten van het virus uit de USA, Japan, Tsjechoslowakije en Nederland zijn nader met elkaar vergeleken in reactie op geselecteerde differentiërende rassen van erwt (Pisum sativum) en op enkele andere plantessorten, en in serologische eigenschappen zowel als in deeltjeslengte.
Serologisch waren de isolaten niet van elkaar te onderscheiden, wel echter van het verwante bonescherpmozaïekvirus. De voor alle vormen van het laatste virus onvatbare ‘Perfection’-type erwterassen bleken al eerder alle vatbaar te zijn voor het erwterolmozaïekvirus. Ook verschillen de isolaten niet in deeltjeslengte (750 nm).
Bij toetsing in zes verschillende over de wereld verspreide laboratoria bleek de reactie van de differentiërende erwterassen te variëren van een snelle, de hele plant dodende necrose (groep I) tot onvatbaarheid (groep V). Ook tussen de virusisolaten bestonden kleine verschillen in reactie. Het Nederlandse isolaat E224 gedroeg zich opvallend mild. Ook in de, directe vergelijkingsproeven op enkele toetsplantesoorten bleken kleine biologische verschillen te bestaan. De geconstateerde verschillen overschrijden echter niet die tussen stammen van eenzelfde virus. Wellicht gaat het bij het optreden van necrose en van zwakke symptomen om genen die het vatbaarheidsgensbm modificeren.
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Contribution of the U.S. Department of Agriculture, Science and Education Administration, Agricultural Research, in cooperation with the Agricultural Experiment Station, Oregon State University, Corvallis. Technical Paper No. 5192, Oregon Agricultural Experiment Station.
Mention of a trademark of proprietary product does not constitute a guarantee or warranty of the product by the U.S. Department of Agriculture and does not imply its approval to the exclusion of other products that may also be suitable.
Authors are members of the International Working Group on Legume Viruses.
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Hampton, R., Mink, G., Bos, L. et al. Host differentiation and serological homology of pea seed-borne mosaic virus isolates. Netherlands Journal of Plant Pathology 87, 1–10 (1981). https://doi.org/10.1007/BF01981395
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DOI: https://doi.org/10.1007/BF01981395