11. Subgroups are defined on the basis of viral interference and in vitro host range . 12. Its host range was limited to members of the Commelinaceae. 13. Although the host range differs, the symptoms are relatively similar. 14. They are divided into three orders based on habitat, host range , and trophozoite morphology. 15. The host range of a virus is determined by the specificity of the binding. 16. This difference is minimalized when comparing host ranges of isolates of the same species. 17. In contrast, the other two genotypes had a smaller host range and were locally distributed. 18. This pathogen can occur on many continents and has a wide host range of plants. 19. The virus has a wide host range that includes field grown crops, ornamentals and weeds. 20. A characteristic of the family is the broad host range susceptible to infection by vibrios.
