Characterization of two different apricot latent virus variants associated with peach asteroid spot and peach sooty ringspot diseases

Characterization of two different apricot latent virus variants associated with peach asteroid... Peach asteroid spot (PAS) and peach sooty ringspot (PSRS) are two diseases of stone fruit trees of unknown aetiology. The use of a cRNA probe of the newly described Apricot latent virus (ApLV), a tentative member of the Foveavirus genus, indicated the presence of cross-hybridizing agents in PAS isolate LA2 and in PSRS isolates Caserta 12 and Clava J4. Analysis of dsRNA patterns revealed in each case the presence of a major dsRNA band of about 9.6 kbp. The purified dsRNAs were used to obtain cDNA clones for isolates LA2 and Caserta 12. Sequence analysis of a 1.1 kbp cDNA clone from isolate LA2 showed very high homology with the known ApLV sequence, indicating that this isolate represents a closely related variant of ApLV. Sequence analysis of a 3.06 kbp Caserta 12 cDNA clone representing the 3′ region of the genome revealed a genomic organization similar to that reported for other members of the Foveavirus genus, including the triple gene block and a large, 43.6 kDa coat protein. Sequence comparison with the CP gene of ApLV, the only sequenced region so far for this virus, showed an overall homology of 78%. These results indicate that the foveavirus represented by the Caserta 12 isolate of PSRS disease may be regarded as a distant variant of ApLV. The present results indicate that the viral agents associated with peach asteroid spot and peach sooty ringspot diseases might be variants of the recently described ApLV. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Characterization of two different apricot latent virus variants associated with peach asteroid spot and peach sooty ringspot diseases

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Publisher
Springer Journals
Copyright
Copyright © 2001 by Springer-Verlag/Wien
Subject
Legacy
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s007050170071
Publisher site
See Article on Publisher Site

Abstract

Peach asteroid spot (PAS) and peach sooty ringspot (PSRS) are two diseases of stone fruit trees of unknown aetiology. The use of a cRNA probe of the newly described Apricot latent virus (ApLV), a tentative member of the Foveavirus genus, indicated the presence of cross-hybridizing agents in PAS isolate LA2 and in PSRS isolates Caserta 12 and Clava J4. Analysis of dsRNA patterns revealed in each case the presence of a major dsRNA band of about 9.6 kbp. The purified dsRNAs were used to obtain cDNA clones for isolates LA2 and Caserta 12. Sequence analysis of a 1.1 kbp cDNA clone from isolate LA2 showed very high homology with the known ApLV sequence, indicating that this isolate represents a closely related variant of ApLV. Sequence analysis of a 3.06 kbp Caserta 12 cDNA clone representing the 3′ region of the genome revealed a genomic organization similar to that reported for other members of the Foveavirus genus, including the triple gene block and a large, 43.6 kDa coat protein. Sequence comparison with the CP gene of ApLV, the only sequenced region so far for this virus, showed an overall homology of 78%. These results indicate that the foveavirus represented by the Caserta 12 isolate of PSRS disease may be regarded as a distant variant of ApLV. The present results indicate that the viral agents associated with peach asteroid spot and peach sooty ringspot diseases might be variants of the recently described ApLV.

Journal

Archives of VirologySpringer Journals

Published: Aug 1, 2001

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