Survey of six rose viruses in a rose virus collection 3-7-2

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henry kuska
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Survey of six rose viruses in a rose virus collection 3-7-2

Post: # 67268Post henry kuska
Thu Mar 08, 2018 9:26 pm

I would hope that sooner or later this research will be published in more detail.
See:
https://www.ars.usda.gov/research/publi ... 115=339038

Don
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Re: Survey of six rose viruses in a rose virus collection 3-

Post: # 67275Post Don
Fri Mar 09, 2018 1:15 pm

Out of six hundred cultivars "No roses tested positive for RRV..."

Interesting.
What doesn't kill them makes them stronger.

henry kuska
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Joined: Thu Dec 15, 2011 9:06 pm
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Re: Survey of six rose viruses in a rose virus collection 3-

Post: # 67296Post henry kuska
Sun Mar 11, 2018 4:13 pm

If you are not familiar with some of these viruses, you can read further about them at my viruses page:

https://sites.google.com/site/rosevirusindexpage/

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Don, two of the reasons that I am not surprised that they did not find RRV (Rose Rosette Virus) in that block are because an RRV infection is generally considered to be fatal within about 3 to 5 years and the symptoms are normally very noticeable.

I have seen at least one reference that the infection could lie dormant for awhile.

"The virus can be dormant in roses for two years before symptoms appear."
http://hoosiergardener.com/?s=rose

If they had one or more roses like that, a positive test would depend on whether the dormant virus concentration was above the sensitively limit of the test method (RT-qPCR ).

Don
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Re: Survey of six rose viruses in a rose virus collection 3-

Post: # 67297Post Don
Sun Mar 11, 2018 5:06 pm

That makes sense, thanks Dr. Kuska. I wonder if that accounts for the fact that I have not see RRD in my own environs since the 80's. It may have simply burned out.
What doesn't kill them makes them stronger.

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