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Arch Virol. 2012 Sep;157(9):1831-4. doi: 10.1007/s00705-012-1373-0. Epub 2012 Jun 8.

A novel mycovirus from Clitocybe odora.

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University of Hamburg, Biocenter Klein Flottbek, Ohnhorststr. 18, 22609 Hamburg, Germany.


The Ninth Report of the International Committee on Taxonomy of Viruses (ICTV) reports only a few species whose members replicate in fungi. Most of these mycoviruses are described to replicate in phytopathogenic and commercially cultivated fungi. A few reports describe virus-like symptoms and virus-like particles in non-cultivated basidiocarps such as Boletus edulis, Laccaria spp. and Cantharellus spp. However, viral sequences from non-cultivated Agaricomycotina are not available yet. In this report, I present a partial sequence of a virus found in Clitocybe odora (Bull.:Fr.) P. Kumm var. odora coding for a putative RNA-dependent RNA polymerase (RdRp) and a small 20-kDa ORF that may encode a coat protein (CP). The sequence of the putative RdRp (ORF 1) of C. odora clusters with those of the Tanathephorus cucumeris virus RdRp and the Tuber aestivum mitovirus RdRp. In addition to sequence homology, Tanathephorus cucumeris virus shows a similar codon usage and TA content in the 5'- and 3' non-translated regions, but it does not encode a putative CP. A viral DNA form proposed for Tanathephorus cucumeris virus was not found in Clitocybe odora. This viral sequence does not fit into any of the existing virus taxa.

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