• discovery
  • The discovery of plant viruses causing disease is often accredited to A. Mayer (1886) working in the Netherlands demonstrated that the sap of mosaic obtained from tobacco leaves developed mosaic symptom when injected in healthy plants. (wikipedia.org)
  • host
  • Like all other viruses, plant viruses are obligate intracellular parasites that do not have the molecular machinery to replicate without a host. (wikipedia.org)
  • Viruses in wild plants have been poorly studied, but those studies that exist almost overwhelmingly show that such interactions between wild plants and their viruses do not appear to cause disease in the host plants. (wikipedia.org)