last revised April 04, 2016
by Henry Kuska
retired, Associate Professor, Department of Chemistry, University of Akron
Ph.D., Physical Chemistry
"This page gives the information that I have collected from my own literature searches and from others posting on the internet. Please let me know if you feel anything is not clear or is not addressed at all as I am continually updating/modifying it as I get feedback." The bold face was added by me for emphasis (H.Kuska).
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The virus was determined to be of the family Tombusviridae. It was very similar to Rosa rugosa leaf distortion virus ( RrLDV) and similar to pelargonium chorotic ring pattern virus (PCRPV) and to pelargonium line pattern virus (PLPV).
http://link.springer.com/article/10.1007/s00705-014-2106-3#page-1
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What does this infection look like?
This virus was detected in the Rose hybrid cultivar Softee that was purchased from a commercial nursery. The symptoms were leaf yellowing and premature senescence.
Fortunately, pictures of infected leaves in the rose cv. Softee and in the rose cv. Red Cascade were included in a more recent paper (Figure 5): Mollov , D., Lockhart, B. and Zlesak, D.C. SYMPTOMS, TRANSMISSION, AND DETECTION OF FOUR NEW ROSE VIRUSES. Acta Hort. (ISHS) 1064: pages 303-310, (2015)
http://www.actahort.org/books/1064/1064_37.htm
Pictures of infected leaves are also available in the free Ph.D. thesis of Dimitre Mollow, page 71
http://hdl.handle.net/11299/171458
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Mode of transmission
No natural transmission studies have been reported for RYLY nor for the similar pelargonium (as far as I could findl).
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Concerning whether the virus is a temperature sensitive virus.
Since this virus is reported to show symptoms throughout the season, it appears that it is not a temperature sensitive virus. Unfortunately, I could not find any conclusive evidence for the similar pelargonium viruses.
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Report that this virus is the same as Rose rugosa leaf distortion virus (RrLDV)
A recent paper states: "Rose yellow leaf virus (RYLV), a pathogen whose nearly complete nucleotide sequence has been determined recently [25], is considered an isolate of RrLDV (and not a member of a separate species) on the basis of the high sequence identity shared by their corresponding
proteins (90 %, 95 %, 82 %, and 86 %, respectively, for RdRp, CP, MP1 and MP2) [33]."
http://link.springer.com/content/pdf/10.1007%2Fs00705-015-2500-5.pdf
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My other rose virus sites can be reached from the following index page: