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CHARACTERIZATION OF CYMBIDIUM CHLOROTIC MOSAIC VIRUS FROM CYMBIDIUM TORTISEPALUM IN CHINA

Z. Zhang, K. Zheng, J. Dong, J.H. McBeath, X. Wang

Abstract


The complete nucleotide sequence of isolate YN of the putative sobemovirus Cymbidium chlorotic mosaic virus (CyCMV) from Cymbidium tortisepalum plants showing chlorotic and necrotic spots in Yunnan province (southwest China) was determined by deep sequencing. Dips from symptomatic leaves showed that this virus has icosahedral particles ca. 30 nm in diameter. The viral genome is a positive-strand RNA molecule 4,081 nt in size (GenBank accession No. KR996515) encoding four open reading frames with an organization similar to that described for sobemoviruses. The complete sequence of CyCMV-YN shares 89.5% identity at the nucleotide level with that of CyCMV-JP isolated from Cymbidium goeringii in Japan. This is the first report of a sobemovirus infecting orchid in China.

Keywords


Sobemovirus; electron microscopy

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DOI: http://dx.doi.org/10.4454/JPP.V97I3.034

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