Molecular characterization of two genotypes of a new polerovirus infecting brassicas in China |
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| Authors: | Xiang Hai-Ying Dong Shu-Wei Shang Qiao-Xia Zhou Cui-Ji Li Da-Wei Yu Jia-Lin Han Cheng-Gui |
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| Affiliation: | (1) State Key Laboratory for Agrobiotechnology and Ministry of Agriculture Laboratory for Plant Pathology, China Agricultural University, Beijing, 100193, People’s Republic of China;(2) Yunnan Academy of Tobacco Science, Kunming, 650106, People’s Republic of China;(3) Department of Plant Science and Technology, Beijing University of Agriculture, Beijing, 102206, People’s Republic of China;(4) Department of Plant Pathology, China Agricultural University, Beijing, 100193, People’s Republic of China |
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| Abstract: | ![]()
The genomic RNA sequences of two genotypes of a brassica-infecting polerovirus from China were determined. Sequence analysis revealed that the virus was closely related to but significantly different from turnip yellows virus (TuYV). This virus and other poleroviruses, including TuYV, had less than 90% amino acid sequence identity in all gene products except the coat protein. Based on the molecular criterion (>10% amino acid sequence difference) for species demarcation in the genus Polerovirus, the virus represents a distinct species for which the name Brassica yellows virus (BrYV) is proposed. Interestingly, there were two genotypes of BrYV, which mainly differed in the 5′-terminal half of the genome. |
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