COMPLETE NUCLEOTIDE SEQUENCES OF RICE GALL DWARF VIRUS ISOLATE GUANGDONG FROM CHINA
Q. Zhao, W.-J. Shen, F.-X. Liu, X.-L. Ruan, Y.-X. Zhang, S.-G. Zhang, H.-P. Li
The complete nucleotide sequence of Rice gall dwarf virus (RGDV) isolate Guangdong (GD) from China was determined by sequencing dsRNA segments S1-S5 and S9-S12. Sequence comparisons showed that the genome organization of RGDV-GD is similar to that of isolates FX from Guangdong, GX from Guangxi, and Thai from Thailand with nucleotide and amino acid sequence identities of 90.8-99.6% and 95.2-99.7%, respectively. Higher sequence identity was found among the three Chinese isolates than between these and the Thai isolate. When compared with the sequence of RGDV-Thai, the dsRNA segment S4 of the three Chinese RGDV isolates appeared to lack 139 nucleotides at the 3’ non-coding region and their S11 segment had three bases missing in the central part of its coding region. Our results suggest that isolates GD and Thai are two distinct strains of RGDV.