Home Acta Virologica 2016 Acta Virologica Vol.60, No.2, p.156-165, 2016

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Founded: 1957
ISSN 0001-723X
E-ISSN 1336-2305

Published in English

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Acta Virologica Vol.60, No.2, p.156-165, 2016

Title: Identification and characterization of two novel genomic RNA segments RNA5 and RNA6 in rose rosette virus infecting roses

Abstract: Rose rosette virus (RRV), a negative-strand RNA virus belonging to the genus Emaravirus, has recently been characterized to be the causal agent of rose rosette disease. Roses showing typical symptoms of RRV collected from a rose nursery in Florida were subjected to reverse transcription-PCR (RT-PCR) assay using primers corresponding to the conserved inverted 13 nucleotide long stretches found at the termini of the RRV genomic RNA segments. RT-PCR analysis yielded two novel genomic RNA segments, RNA5 and RNA6, in addition to the previously identified four RNA segments. The RNA5 is 1650 bp long and encodes for a polypeptide of 465 amino acids (54.3 K), while RNA6 is 1400 bp long and encodes for a polypeptide of 233 amino acids (27.05 K). RACE analysis showed that, both the RNA segments posses at their 5' and 3' termini, stretches of conserved inverted complementary13 nucleotides long sequence with two nucleotide mismatches as previously identified in other genomic RNA segments. Northern blot analysis as well as RT-PCR using specific primers showed the presence of the novel genomic RNA segments in infected plants, but absent in the non-infected plants. The GenBank Acc. Nos. for the sequences reported in this paper are KT007556 and KT007557.

Keywords: Emaravirus; multipartite RNA virus; rose rosette virus; RNA5; RNA6
Published online: 06-Jun-2016
Year: 2016, Volume: 60, Issue: 2 Page From: 156, Page To: 165

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