There is some research at the Univ. of Calif. Davis to indicate that RMV may be transmitted by root grafting. That would require virused Dr. Huey roots to come into close contact with your non-virused rose roots. At Davis, the roses were planted 18 inches apart. In my climate, Dr. Huey is a rampant root division grower, meaning I am digging out Dr. Hueys for years after the plant was removed. The present record is 5 years. I may have to resort to Roundup to remove all those Dr. Hueys.

A shot of the own root plants that your think may be showing virus would be helpful, along with the names of the roses.

Can we see a picture of the affected foliage?

My 'Gene Boerner' from Chamblees has RMV. I don't think they sell that one any more. Since nothing had ever been planted in that area before, I know it had RMV when it arrived. It is large and healthy despite the infection.

Yes.
It is possible.
A recent paper by Golino et al discussed in detail the root to root transmission of RMV. The abstract for that paper is on line at the link below.
Golino works at UC Davis with the collections of grapes, strawberries and roses that are there to provide disease free plant material. The paper on root to root came about because they were seeing RMV where it shouldn't have been.
I talked to her several weeks ago and the info in the paper still stands.
In addition, there are a lot of papers about other root-to-root transmission of other viruses in other plants in Rosaceae.
If you have access to a university library, you should be able to get the full paper from that library. It's well worth the effort.

And there is also the possibility that Chamblees might have RMV in some of their roses. RMV in my garden definitely shows in times of stress.

Here is a link that might be useful: Abstract :Transmission of RMVs

Yellowed veins in the leaves, tho, aren't the most common sign of RMV --
I'd look more to the presence of a toxin.
(Maybe even rotting old rose roots?)

Also, I'm not sure for your area, but out here, we more commonly see
the signs of RMV in the spring.

Jeri

Here is a link that might be useful: RMV images & Text

Okay, here is the best photo I could get this morning. this is a spring planted own-root Graham Thomas.

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And here is an extra for you. Caught this guy on the Shasta Daisies.

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That is not RMV. No one can tell you your rose doesn't have RMV, but that isn't what it looks like. The rest of that plant looks perfectly healthy. I think you're seeing "nitrogen remobilization" of an older leaf as the plant slowly kills off that leaflet while reabsorbing the nutrients.

Here is a link that might be useful: click on thumbnails to see RMV

Scorpio, these images are a bit "soft," so it's hard to say for sure, but
I've never seen Rose Mosaic Virus expressed in this manner.

From what I can see, the problem looks like more one of too much or too little
of some element, or too much heat, or too much water, or or or.

Is it possible for you to put a couple of leaves in a flatbed scanner,
and scan both the top and underside of the leaves???

Jeri

There are two different symptom expressions tied to rose leaf discoloration caused by virus.
Mosaic is when there is a sharp border between the discolored area and the not-discolored leaf.
Mottle is when there is a fuzzy border and a diffuse less predictable pattern.

I am glad to know that the general concensus is that this is probably not RMV! The roses that used to be in that spot have heavy yellow veining in the leaves, the kind that looks like a worm crawled all over them and left a bright yellow trail. So when I saw this rose getting yellowed, I started to wonder!

I will see about scanning, Jeri, but our printer/scanner isn't working right since we got this computer and I have to do a reinstall (I think). Lemme see what I can do.

J