I came across a refrence to this Columbian Datura Virus today.. I can't remember reading anything mentionng this... [or did it just slip my mind ].. in the years I've been in the study of Brugmansias..
The virus is in hybred Brugmansias...so perhaps the virus was named before the split of theBrugmansias and the daturas..scientifically...
can anyone tell me the way it works..and the harm it does...or anything about it... has anyone come upaganst it.. or perhaps even seen it mentioned... Thanks...
Gordon
Columbian Datura Virus
Hi Gordon. All I know is it is so dreaded and so lethal! I do believe it is the reason plants are so restricted when importing them.
I know little, but the only place I have heard about it was in a nursery in Florida a few years ago. It was a disaster for them though they are getting back on their feet now. On their site they give some interesting info:
"In the past 4 years, our Brugmansia stock (140++ cultivars) were wiped out by a virus that "hasn't been in the United States since 1957". We voluntarily destroyed most of our collection and the USDA has been doing a study, tissue culturing some of our plants (Cream sickle,
etc.) and exposing them to heat & anti-virus compounds to yield guaranteed, virus free clones. We will be the first place you read about the study that involved purchases from dozens of vendors in the United States sent directly to a Doctor of Plant Pathology at the USDA & extensively tested & documented. *Somebody gave us this virus*. We were smart enough to recognize it before we exposed others to it. We did the right thing to avoid somebody trying to say *"He who smelt it, dealt
it!".* Stay tuned for the definitive study by the USDA on this unfortunate stumbling block in Brugmansia culture......."
Also I found this about it with a short description -
https://www.ars.usda.gov/research/publications/Publications.htm?seq_no_115=182622
Kell...
Oh good... I was worried everyone would think I'd posted an April Fools bit... and couldn't remember hearing anything about it before I came upon a reference to it yesterday..
I geuss when I read of it I was worried it was somehow responsible for branches to wither and die on otherwise healthy looking brugs.. Just what would cause this.. part of the information I had on the virus... thought it was spread by aphids...mitess..or some other little insect...
Guess I should be warey of any brugs with an unusual varaigation..least it be the mosaic look of the virus.. funny the nursery owner thought someone had somehow passed it onto his plants.. what a gift... I wonder just where the person might have got the virus to pass along.. some jealous brug a hollic no doubt..
I don't guess there is any danger of having picked this up in out romp through the jungles a month or so ago ...do you.. I'll have to get out the electron beam microscope and check mine out..
Well thanks again...Gordon
This message was edited Apr 1, 2007 8:48 AM
This message was edited Apr 1, 2007 9:18 AM
Hopefully you do not have to worry about this virus, Gordon. As I understand it will go right thru your plants killing them all as it is not just specific to brugs. It is a virus the US is trying to keep out!
The nursery involved probably got plants from all over the world. I guess you could bring one in legally that was infected but not showing yet which is why the powers to be want plants isolated for 2 years, I guess.
So it is April Fools Day! Time for me to get to bed again.
I looked for my bookmarks on " Stranglebond virus " and could find them . There are pictures of it and to me it looked like the spot on a tomato starting to rot . Spreads very fast - no one was sure if by insects , spores , bugs , water splash - the advice was burn all parts of plants and to use old tools and throw in to fire . To mix up cloroban [ the stuff to kill termites ] triple strength and pour over ground . Some one also mentioned copper-nap [ used to coat wood for boats ]
My spelling is really bad and I didn't add Stranglebond to spell checker - I should have [ to add a word like that - type on a new document page spelled correctly , then do spell check and click on learn .
Name new doc. the same , add where you found it , book , bookmark , web site , etc and save to plants
I'll keep looking and post if I find it .
Wow! This is interesting! http://www.pestalert.org/viewNewsAlert.cfm?naid=21
No luck with stanglebond - yet - going to keep checking but a good reference site is
http://image.fs.uidaho.edu/vide/famly124.htm
for a lot of viruses
LIKE I said , my spelling is terible , anyway its called " Stangelbrand " . The pictures are from another site , so do a web search .
This virus is sometimes called S B but so is stem blight - don't confuse them .
Hi Tony,
I don't know much about Columbian Datura Virus, but I thought it was different than Stranglebrand. Did you find some info linking them?
- Tom
Tony, though I sure am no expert on this but I think with time it was felt that stengelbrand is really phoma with or without other fungus (like Fusarium, Phomopsis, Verticillium etc) possibly invading the infected tissue also.
But Gordon is asking about Columbian Datura Virus which is totally diffferent.
From http://image.fs.uidaho.edu/vide/descr290.htmHost range and symptoms
"First reported in Datura sanguinea, Datura candida; from Datura cuttings imported from the Sibundoy Valley, Putumato, Colombia; by Kahn and Bartels (1968).
Natural host range and symptoms
Symptoms persist, or disappear soon after infection.
Datura candida, D. sanguinea - veinbanding, chlorotic flecking followed by mottling. "
This site has a great info on it.
http://www.pestalert.org/viewNewsAlert.cfm?naid=21
It seems to be spreading in Europe. And from this it can be symptomless in Brugs yet contagious to other plants. Another reason to be so leery in bringing in brugs from Europe.
"Colombian datura virus expanding host range to other Solanaceous crops in Europe ...........
Significance:
Colombian datura virus (CDV) was first described by Kahn and Bartels (1968) who found the virus in plant material of Brugmansia (syn. Datura) candida Pers. and B. (syn. Datura) sanguinea (Ruiz. and Pav.) D. Don (common name: Angel's trumpet) imported from Colombia (Sibundoy Valley, Putumayo).
Little else was reported about the virus until Lesemann et al., (1996) indicated that virus-infected Brugmansia were observed in private and commercial European collections. A survey in parts of Germany and Netherlands by Lesemann et al. confirmed CDV in Brugmansia x arborea, B. aurea, B. x aurea, B. candida, B. x candida, B. cornigera, B. x flava, B. sanguinea, B. suaveolens, B. versicolor, various Brugsmania hybrids, a few plants of Juanulloa aurantiaca, and one plant of Petunia hybrida 'Otto'.
Also around that time, CDV was detected in approximately 300 plants of tomato (Lycopersicon esculentum) cv. Cabrion growing in a Netherlands greenhouse (Verhoeven et al., 1996). Evidence suggests aphids (Myzus persicae) within the greenhouse transmitted the virus from an infected Brugmansia plant to the tomato plants. Infected tomato plants showed reduced growth, mosaic on young leaves, and fruit discoloration. While additional distribution information from Europe was mostly lacking, Verhoeven et al. believed the virus was likely in other parts of Europe in ornamental Brugmansia (1996).
Eight years later (2004), a virus-like infection of field grown tobacco was observed in Poland, Germany, and Hungary. By means of cloning and partial cDNA sequencing the causal agent was eventually identified as CDV (Schubert et al., 2006).
The virus is now known to be sporadically distributed in Europe and Japan, mainly under glass. In parts of Europe the virus has been found outside glasshouses, on Brugmansia, Cape gooseberry (Physalis peruviana) and pepino (Solanum muricatum). Recently the virus was found in the United States, in both terrestrial orchids (Spiranthese cernua, Fry et al., 2004) and Brugmansia (Adkins et al., 2005)."
I haven't found any pictures yet but I will look later. Right now I am too busy. But I sure would like to see what it looks like if anyone wants to look for some.
Since I am on Europeen google servers I thought I would have better luck on finding info on the virus.
Here is a site on viruses and other nastys on plants
http://www.dsmz.de/nf-plvirus/index.html
Here is the virus info in question
http://www.dsmz.de/nf-plvirus/viruses/cdv.html
Here is google for pictures of the nasty thing
http://images.google.se/images?svnum=10&um=1&hl=sv&q=Potyviridae+Potyvirus+
Janett
Gosh, after reading all the kinds of virus there are listed in your first link, it is amazing any plants survive at all, Janett. Thanks. Have you seen Columbian Datura Virus in person?
No, I havent had virus of any kind on any plants but since this virus started in Europe and almost all outbrakes have been here I thought I would have more luck to find info on it and I have ordered some brugs that are prone to get/have virus I better read up on it.
If you dont find info on what you are looking for try other google servers. almost every country have its own google server and your google server dont give you all the info that is out there.
A google server can only show you info from sites that has passed through your google server by other people that have visited sites deliberitly (known the adress)through your server or that the sites have been "linked" for google by your server. SO if you dont find info try google.de google.co.uk or any other server. Firefox has a list on every google server there is.
Ron Convulvulus and I compared the result on google as he couldnt find any info on a lot of Morning glorys.hehe when I was finished he had hundreds and hundreds of sites to read on MG:s he never found sites on before.
Janett
That is so interesting, Janett. I had no clue. THANKS for the info!
Tony, There is no definition for Stangelbrand. The word is a German term that sure has caused a lot of confusion. USA collectors believed they were dealing with some strange, new, unheard of disease imported from Europe. So this disease was called Stem Blight (SB) instead.
Obviously I have no way of knowing the results of every AG Dept test done on brugs. But the results I have read about have been different combinations of various diseases. Never Stem Blight alone. No case has been identical.
So in reality Stem Blight when used with brugs is not a good term either, unless it is diagnosed as a 100% Stem Blight of some kind. It is better to know every disease the plant was diagnosed with.