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Acta Virologica Vol.52, No.1, p.59-62, 2008 |
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Title: SEQUENCE ANALYSIS OF CP AND HC-Pro GENES OF TURNIP MOSAIC VIRUS ISOLATES FROM CHINA | ||
Author: M. L. SHI, H. Y. LI, J. SCHUBERT, X. P. ZHOU | ||
Abstract: Fourteen isolates of Turnip mosaic virus (TuMV) were obtained from the leaves of diseased cruciferous plants in China. According host tests, the isolates were classified into B-host and BR-host group. The nucleotide sequences of the coat protein (CP) and helper component proteinase (HC-Pro) genes of the isolates were determined. The CP genes consisted of 864 nucleotides encoding a polypeptide of 288 amino acids. The HC-Pro genes comprised 1374 nucleotides encoding a polypeptide of 458 amino acids. The genes CP and HC-Pro of the 14 isolates shared nucleotide sequence identities ranging from 89.2 to 99.5% and 79.1 to 99.9%, respectively. Amino acid sequence identities of CP and HC-Pro proteins ranged from 95.1 to 100% and 94.8 to 99.8%, respectively. Phylogenetic tree based on the CP gene indicated that 13 of the 14 TuMV isolates belonged to the world-B group, while the remaining isolate ZJ1 belonged to the basal-BR group. The phylogenetic tree based on the HC-Pro gene was similar to that of CP gene with the exception of the isolate JX that clustered with the Asian-BR group. Our results were consistent with the previous results demonstrating that a majority of the isolates collected from Brassica spp. belonged to the world-B group. |
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Keywords: Turnip mosaic virus; HC-Pro gene; CP gene; phylogenetic relationship | ||
Year: 2008, Volume: 52, Issue: 1 | Page From: 59, Page To: 62 | |
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