Virus - Paph villosum?

[naoki]

Originally Posted by Fairorchids

Actually, I have never heard of virus in Paphs. In Phals, Catts, Oncids & Cymbidiums yes (and up to several types, with tobacco & tomato mosaic virus being common).

If anyone has seen a study on virus in Paphs, I would like a link.

Actually, that's a myth. You can easily find them with scholar.google.com. For example, table 1 of this paper should be viewable (not full text is available), and it includes positives for ORSV. If we include viruses which are not known to human yet (plant viruses aren't well studied), it is unlikely that there is any species which has completely escaped from viruses.

People say that Paphs don't show symptoms easily, so this is probably the cause of the myth.

[The Mutant]

Originally Posted by NYCorchidman

I just read an article on the Chinese villosum. I think they are basically the same, with overall very washed out and diluted color, if you like that, but I like the intensely colored form the best. like annamense with yellow dorsal with very very dark vertical line on it.

Well, that's the thing about virus.
It gives me headache the more I think about it. lol

Also, tests only work for two most common one.
I'm sure certain lab will test for all the known orchid virus if you paid them enough. haha

I guess we will just have to practice good culture and whatever looks suspicious and does not do well will have to go.

The thing is, I don't know if it was that type, or another, and I'll never know (I would love a link to the article, though). If it was one with a very diluted colour, I would've sold it. I also prefer the ones with more colour on them.

I'm in contact with Agdia, and it seems they have immunostrips for more than Cymbidium mosaic virus and Odontoglossum ringspot virus (the two most common ones). I've asked if it's possible to mix immunostrips of your own choice in a unit. We'll see what they say.

Yup, I agree. It saves you from a lot of future headaches at least.

Originally Posted by Fairorchids

Actually, I have never heard of virus in Paphs. In Phals, Catts, Oncids & Cymbidiums yes (and up to several types, with tobacco & tomato mosaic virus being common).

If anyone has seen a study on virus in Paphs, I would like a link.

Originally Posted by Leafmite

I have always heard this about Paphs, too. When I saw the pictures, I was surprised that it was suggested to have a virus. I would have thought it to be a nutrition deficiency of some sort or, perhaps even a genetic issue. I am more accustomed to pictures of orchids and other plants with viruses having necrotic streaks and markings or circular markings...perhaps even deformed leaves. This doesn't look classic for virus to me.

As naoki points out, Paphs can and do get virus. I think they're susceptible to at least the most common ones, and probably more. They just don't seem to be affected by the viruses as much, but they can still spread them.

This was one of the problems I had when trying to find pictures of virus infected Paphs... Not many of those around.

The thing with the failed variegation is that it could be a sign of virus, so I understand why people said it. I didn't know this before I asked, but I did know after reading about both variegation and how virus could cause said variegation.

It's still not certain it had virus, could've been something genetic. I will test the Paphs it stood together with though, just as a precaution.

[Leafmite]

I always like learning new things. Thanks naoki!
If it gave you peace of mind to toss the plant, then it is the right thing to do. I hope it wasn't a virus so that your other orchids turn out to be fine.

[lepetitmartien]

It's not consistant with an albomarginata variety, some leaves are really irregular in this regard. Plus it'd be consistantly albomarginata with a consistant variegata, which is not.

It doesn't ring to me virus either, and in this regard, older leaves would be more the playground. Now only a test here can tell.

I eliminate the suckers at work as it's not typical nor distributed the "right" way. (if there's one)

Now it rings some nutritional deficiencies to me…

Now better safe than worried.