Analysis of the genetic diversity of genes 5 and 6 among group C rotaviruses using cDNA probes.
Two partial cDNA clones of genes 5 (encoding the major inner capsid protein VP 6) and 6 (encoding a nonstructural protein) of the porcine group (Gp) C rotavirus (Cowden strain) were radiolabeled with 32P and used individually as probes in Northern and dot blot hybridization assays. The specificity of each probe was tested against genomic dsRNA from: (1) porcine Gp A, B, and C rotaviruses; (2) Gp C rotaviruses from different species; and (3) porcine Gp C rotavirus field strains with varying electropherotype patterns. Neither probe hybridized with ds RNA from the porcine Gp A and B strains under the stringency conditions employed in the study. However, the gene 5 probe hybridized with the corresponding gene from the homologous porcine and the heterologous human and bovine Gp C rotaviruses tested. The gene 6 probe hybridized with the corresponding gene from the homologous Cowden strain, but hybridized weakly with gene 6 from the human and bovine Gp C rotaviruses. Both probes recognized all six different porcine Gp C field strains, although with varying intensities. Our results demonstrate that the gene 5 and 6 probes used in this study are specific for Gp C rotaviruses. However, evidence for greater genetic variation in the gene 6 among porcine, bovine and human Gp C strains suggested that the gene 5 probe may prove more broadly reactive among Gp C strains from different species. cDNA probes used in our study should prove useful for the detection of Gp C rotaviruses in feces and facilitate epidemiologic studies.
Jiang
B M
BM
Food Animal Health Research Program, Ohio Agricultural Research and Development Center, Ohio State University, Wooster.
Tsunemitsu
H
H
Qian
Y
Y
Green
K Y
KY
Oseto
M
M
Yamashita
Y
Y
Saif
L J
LJ
D000956:Antigens, Viral; D015152:Blotting, Northern; D002213:Capsid / Q000235:genetics*; D036022:Capsid Proteins; D015342:DNA Probes / Q000235:genetics; D005814:Genes, Viral / Q000235:genetics*; D014644:Genetic Variation / Q000235:genetics*; D012330:RNA, Double-Stranded / Q000235:genetics; D012367:RNA, Viral / Q000235:genetics; D012401:Rotavirus / Q000235:genetics*; D014758:Viral Core Proteins / Q000235:genetics*; D017361:Viral Nonstructural Proteins
D000956:Antigens, Viral; D036022:Capsid Proteins; D015342:DNA Probes; D012330:RNA, Double-Stranded; D012367:RNA, Viral; C061332:VP6 protein, Rotavirus; D014758:Viral Core Proteins; D017361:Viral Nonstructural Proteins