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Dutch Elm Disease Treatment

Larry Daley daleyl at bcc.orst.edu
Wed Jun 12 11:04:44 EST 1996

To all:

Prof. Gary Strobel (Plant Pathology, Montana State Univ., Bozeman, MT
59717) worked out a method to p[rotect against Dutch Elm disease using a
bioengineered endophytic bacteria Pseudomonas spp. It worked but he ran
into regulatory troubles.  Treated trees have lasted as long as ten years
without infection.  The work done in Holland with non transformed strains
of Pseudomanas had some success, but is not considered to be as effective. 

Regulations have changed a lot since then and now are more accepting of 
bioengineered strains of bacteria.  It is about time that this method was 
released for general use.

Larry Daley

On 7 Jun 1996, Frits v/d Laan wrote:

> In article <4p1hbi$8cb at acme.freenet.columbus.oh.us>, rcharles at freenet.columbus.oh.us (Robert Charles) says:
> >
> >
> >Does anyone know of a treatment for Dutch Elm Disease.
> >
> >I have six 5 yr old trees in my yard and would like to save them.
> >What is the nature of the disease and it's carrier?
> It's a fungus that damages the tree and by trying to undo the damage
> the tree kills itself by distorting the waterflow upwards so the leaves
> will dry out.
> The fungus is spread by small beetles wich live under the bark of the tree.
> As far as I know there is no real cure. Here in Holland sick trees are felled
> by the thousands.
> Frits v/d Laan
> Biologische boomkwekerij
> Gouda
> http://web.inter.nl.net/users/F.vd.Laan/

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