Asian prunus viruses: New related members of the family Flexiviridae in Prunus germplasm of Asian origin

Serological reactivity to Plum pox virus (PPV) antisera has been described in several Prunus sources of Asian origin that are free of PPV infection. Using polyvalent or specific PCR assays, the presence of three closely related agents in two of these sources, Prunus mume cv. Bungo and P. persica cv....

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Veröffentlicht in:Virus research 2006-09, Vol.120 (1), p.176-183
Hauptverfasser: Marais, A., Svanella-Dumas, L., Foissac, X., Gentit, P., Candresse, T.
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creator Marais, A.
Svanella-Dumas, L.
Foissac, X.
Gentit, P.
Candresse, T.
description Serological reactivity to Plum pox virus (PPV) antisera has been described in several Prunus sources of Asian origin that are free of PPV infection. Using polyvalent or specific PCR assays, the presence of three closely related agents in two of these sources, Prunus mume cv. Bungo and P. persica cv. Ku Chu’a Hung, was demonstrated. Similarities in genome organization and sequence comparisons indicate that these agents should be regarded as members of the genus Foveavirus, their only singular trait being a very large (>800 nt) 3′ non-coding region (NCR), as compared to the ca. 130–180 nt 3′ NCR observed in other Foveaviruses. The three agents are very divergent from known Foveaviruses but are also significantly removed one from the others, with overall nucleotide sequence identity levels in the sequenced region of ca. 74–76% and of only 60.8–67.5% in their complete CP gene (61.9–71.3% amino acid sequence identity). Given the species discrimination criteria in the family Flexiviridae, these three agents should be regarded as three related yet distinct new viruses belonging to the Foveavirus genus, for which the names Asian prunus virus 1, 2 and 3 are proposed. Evidence is provided for the presence of variants of these new viruses in other Prunus germplasm of Asian origin.
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subjects Amino Acid Sequence
Asia
Capsid Proteins - genetics
Flexiviridae
Foveavirus
Genes, Viral
Genome
Genome, Viral
Life Sciences
Microbiology and Parasitology
Molecular Sequence Data
Plant Diseases - virology
Plant Viruses - classification
Plant Viruses - genetics
Plum pox virus
Prunus
Prunus - virology
Prunus mume
Sequence Alignment
Sequence Homology, Amino Acid
Sequence Homology, Nucleic Acid
Virology
title Asian prunus viruses: New related members of the family Flexiviridae in Prunus germplasm of Asian origin
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