Thank you, Henry, for that link. I checked on that, it's very intereresting to learn about RNA replication in virus. Thanks for expanding my horizon.

Be nice if someone recorded it placed on web.

Henry, I've talked with Alma and her major professor about her thesis. It's one of those written as chapters suitable for publication. Both told me that the two (of four total) that deal with RRD (then) are the two published in Weed Science with several co-authors. Can your library access Weed Science? If not, let me know. Cutting off an infected cane HAS to be done before the virus moves down into the roots (assuming stem meristem infection) and back out. I've saved several roses from different classes in my yard by catching the problem when only a single leaf node (or three on one side of the cane) were infected in fall. I saved an American Pillar in spring when it was out on a cane about ten feet from the roots. I've never saved a HT, and I've only seen RRD on HTs in spring. That may have something to do with the transmission times in fall to late fall. The one thing that (I don't think) has been addressed is what it is about RRD that ultimately kills the host rose. Epstein and Hill reported a lack of sugar to starch conversion in long infected canes. The odd thing that I watched this year was that some roses I've watched for four years finally got down to scrawney, skinny leaves often with PM and then they died in May (which was not a time of drought or too much rain- just really nice weather.) We know from Glen Viehmeyer and Percy Wright that both saw RRD overwinter in the colder parts of Canada. I don't think we know much about temperature and the whole batch of EMARviruses.

This is the link to Publication 3355 referred to in the initial article. http://text.lsuagcenter.com/NR/rdonlyres/8367B058-35D5-4E5C-A74A-15A3430B1BFC/98105/pub3355RosetteDiseaseFINAL.pdf