TY - JOUR
T1 - Two Ustilago maydis viral dsRNAs of different size code for the same product
AU - Fild, Loren J.
AU - Bruenn, Jeremy A.
AU - Chang, Tien hsien
AU - Pinhasi, Orit
AU - Koltin, Yigal
N1 - Funding Information:
ACKNCWLEDnEHKNTS We thank Alan Siegel for technical assistance in micrcoscopy and the NIB (grant number GM29928) for support.
PY - 1983/5/11
Y1 - 1983/5/11
N2 - UmV is a double-stranded RNA (dsRNA) virus of the corn fungus Ustilago maydin. There are three viral subtypes, PI, P4 and P6, which differ in the specificity of their secreted killer toxins. Bach has three size classes of dsRNAs: H (heavy), M (medium), and L (light). We find that, unique among dsRNA viruses, two segments of diferent size code for the same product - the toxin resistance factor. The smaller dsRNA (L) is homologous to one end of the larger (M), and may have arisen by replication and packaging of a sub-genomic mRNA. We have also compared all the UmV dsRNAs with each other and with the dsRNAs of the similar yeast virus (ScV) by Northern gel and by 3′ sequence analysis. Like those of ScV, many of the UmV dsRNAs have one 3′ terminus with the sequence UUUUUCAOH or UUUUUCGOH the H AND L dSRNAs Of similar size in different viral subtypes are generally related in sequence. The UmV H dsRNAs of different size are not detectably related in sequence.
AB - UmV is a double-stranded RNA (dsRNA) virus of the corn fungus Ustilago maydin. There are three viral subtypes, PI, P4 and P6, which differ in the specificity of their secreted killer toxins. Bach has three size classes of dsRNAs: H (heavy), M (medium), and L (light). We find that, unique among dsRNA viruses, two segments of diferent size code for the same product - the toxin resistance factor. The smaller dsRNA (L) is homologous to one end of the larger (M), and may have arisen by replication and packaging of a sub-genomic mRNA. We have also compared all the UmV dsRNAs with each other and with the dsRNAs of the similar yeast virus (ScV) by Northern gel and by 3′ sequence analysis. Like those of ScV, many of the UmV dsRNAs have one 3′ terminus with the sequence UUUUUCAOH or UUUUUCGOH the H AND L dSRNAs Of similar size in different viral subtypes are generally related in sequence. The UmV H dsRNAs of different size are not detectably related in sequence.
UR - https://www.scopus.com/pages/publications/0021100792
U2 - 10.1093/nar/11.9.2765
DO - 10.1093/nar/11.9.2765
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C2 - 6856475
AN - SCOPUS:0021100792
SN - 0305-1048
VL - 11
SP - 2765
EP - 2778
JO - Nucleic Acids Research
JF - Nucleic Acids Research
IS - 9
ER -