Parsnip Yellow Fleck Virus, Type Member of a Proposed New Plant Virus Group, and a Possible Second Member, Dandelion Yellow Mosaic Virus

  • A. F. Murant
Part of the The Viruses book series (VIRS)


Parsnip yellow fleck virus (PYFV) (Murant and Goold, 1968; Murant, 1974) has isometric particles approximately 30 nm in diameter, which contain a single species of ssRNA of unusually high molecular weight,approximately 3.3 × 106 (Murant et al., 1981). PYFV is transmitted by aphids in a semipersistent manner,but only in association with a helper virus, anthriscus yellows (AYV) (Murant and Goold, 1968). The two viruses resemble each other in particle composition (Hemida and Murant, 1985, 1986) but, whereas PYFV infects cells throughout the leaf and is transmissible experimentally by mechanical inoculation, AYV is restricted to phloem cells and is not mechanically transmissible. AYV is therefore unlikely to be classified with PYFV, and will not be considered in detail in this chapter. PYFV is proposed here as the type member of a new plant virus group.


Helper Virus Rice Tungro Bacilliform Virus Rice Tungro Spherical Virus Bottom Component Yellow Mosaic Disease 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Plenum Press, New York 1988

Authors and Affiliations

  • A. F. Murant
    • 1
  1. 1.Scottish Crop Research InstituteDundeeUK

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