NDLI: Comparison of complete nucleotide sequences of genomic RNAs of four Soybean dwarf virus strains that differ in their vector specificity and symptom production

Content Provider	Springer Nature Link
Author	Terauchi, H. Kanematsu, S. Honda, K. Mikoshiba, Y. Ishiguro, K. Hidaka, S.
Copyright Year	2001
Abstract	Soybean dwarf virus (SbDV) is divided into four strains, namely YS, YP, DS and DP. YS and YP cause yellowing in soybeans, while DS and DP cause dwarfing. YS and DS are transmitted by Aulacorthum solani, while YP and DP are transmitted by Acyrthosiphon pisum. To clarify the taxonomic relationship between the four strains and to classify SbDV into an appropriate genus in the Luteoviridae, we determined the complete nucleotide sequences of genomic RNAs of four isolates belonging to each of the strains. The genomes of the four isolates had a chimeric form between Barley yellow dwarf virus-PAV and poleroviruses, and the genome organizations were similar to the Australian isolate SbDV Tas-1. In all of the non-coding regions and ORFs, nucleotide and deduced amino acid sequence identity between the same symptom-type strains was higher than that between the different symptom-type strains. However, in the N-terminal half of the readthrough domain (RTD) the deduced amino acid identity between the same aphid transmissibility-type strains was higher than that between the different aphid transmissibility-type strains. These data suggest that the N-terminal half of the RTD is closely related to the aphid transmission specificity, and that the present strains were generated from ancestral Y and D strains by mutations and strong selection pressures of efficient aphid transmission. Therefore, we propose that SbDV should be classified into a new genus in the family Luteoviridae and that the four strains described should be regarded as different strains of the same virus, rather than as distinct virus species.
Starting Page	1885
Ending Page	1898
Page Count	14
File Format	PDF
ISSN	03048608
Journal	Archives of Virology
Volume Number	146
Issue Number	10
e-ISSN	14328798
Language	English
Publisher	Springer-Verlag
Publisher Date	2001-10-01
Publisher Place	Wien
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Virology Medicine

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