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Taxonomic patterns in the host ranges of viruses among grasses, and suggestions on generic sampling for host‐range studies
Author(s) -
WATSON L.,
GIBBS A. J.
Publication year - 1974
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1974.tb01384.x
Subject(s) - biology , host (biology) , range (aeronautics) , mosaic virus , barley yellow dwarf , plant virus , brome mosaic virus , rhopalosiphum maidis , botany , agronomy , virus , virology , ecology , pest analysis , homoptera , aphididae , genetics , rna , materials science , rna dependent rna polymerase , gene , composite material
SUMMARY Analyses of published host‐range data for certain viruses reveal correlations with taxonomic groupings of grasses. Barley yellow dwarf virus (BYDV), cocksfoot mottle and phleum mottle viruses are found to have infected greater proportions of the festucoid grasses than of the non‐festucoids to which they were inoculated. By contrast, all strains of sugarcane mosaic virus (SCMV) and of the closely related maize dwarf mosaic virus (MDMV) infected more non‐festucoids than festucoids. In addition, infected plants from grass groups containing higher concentrations of genera susceptible to BYDV, SCMV and MDMV usually show clear symptoms, whereas infected plants from less susceptible groups are frequently symptomless. Some viruses, such as barley stripe mosaic, brome mosaic, cocksfoot streak and ryegrass mosaic, show no apparent preferences for particular grass groups. Samples of grasses employed in host‐range studies are usually strongly biased towards festucoids. It is suggested that viruses ought to be adequately tested against genera from all the major groups, and a classified list of grass genera suitable for host‐range studies is provided.