VON BARGEN, Susanne; DIECKMANN, Heike-Luisa; CANDRESSE, Thierry; MÜHLBACH, Hans-Peter; ROSSBACH, Jenny; BÜTTNER, Carmen

doi:10.1007/s00705-019-04275-0

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VON BARGEN, Susanne
Humboldt-Universität zu Berlin = Humboldt University of Berlin = Université Humboldt de Berlin [HU Berlin]

DIECKMANN, Heike-Luisa
Humboldt-Universität zu Berlin = Humboldt University of Berlin = Université Humboldt de Berlin [HU Berlin]

CANDRESSE, Thierry
Biologie du fruit et pathologie [BFP]

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Ce document a été publié dans

Archives of Virology. 2019, vol. 164, n° 7, p. 1937-1941

Springer Verlag

Résumé en anglais

We report the complete genome sequence, comprising six single-stranded RNAs of negative orientation, of a European mountain ash ringspot-associated virus (EMARaV) isolate identified in a diseased Sorbus intermedia (Swedish whitebeam) tree exhibiting prominent chlorotic ringspots, mottle and line pattern on leaves. Since the first observation of EMARaV-like symptoms and detection of the virus in whitebeam in 2012, the tree displayed leaf symptoms every year in at least one third of its canopy, developed dieback symptoms, and showed signs of decline. Two previously unrecorded genome segments of the virus were identified, each encoding a single protein in a negative orientation. RNA5 is 1629 nucleotides long and encodes the putative movement protein (MP) of EMARaV with a molecular mass of 42.4 kDa. RNA6 (1362 nucleotides) encodes a small protein (26.8 kDa) exhibiting some sequence similarity to the P4 protein encoded by EMARaV RNA4. However, its biological function remains to be elucidated. Both novel genome segments are systematically present in EMARaV-infected Sorbus spp., and no additional genome segments could be identified by two independent methods. It is concluded that the six RNAs represent the complete genome of EMARaV.< Réduire

Mots clés

EMARaV

Mots clés en anglais

European mountain ash ringspot-associated emaravirus

Sorbus intermedia