In addition, it's always questionable for who it is beneficial?!
Virusses are also in use as treatment against pests, as is the case in
the Dutch Elm disease, I believe.
R.
renevanwezel at hotmail.com (Rene) wrote in message news:<fc41d9d1.0310070911.29679325 at posting.google.com>...
> There's the fact that some viruses in apple (trees) have an impact on
> apple colour and sweetness. For legal reasons, the nursery material
> has to be certified pathogen free and when trees are been selected for
> breeding, they are tested. When positive they can be (heat) treated to
> drive out the virus. When virus free, the apple sometimes is nothing
> special anymore.
>> Whether the virus in this case is only beneficial for us and not
> harmful for the tree, I don't know.
>>> Rene.
>>>weissm at rockefeller.edu (Martin Weiss) wrote in message news:<p06002002bb8cc63eeae7@[192.168.1.115]>...
> > The public perception is that germs are bad and to be
> > avoided. Most-about 1% of microorganisms-are not pathogenic. Most
> > examples of beneficial or benign microorganisms are bacteria. What
> > about viruses? Are there examples of viruses having a positive
> > effect? Benign might be difficult to document.
> >
> > Cheers,
> >
> > Martin
> >
> > --
> > Martin Weiss, Ph.D.
> > Director of Science
> > New York Hall of Science
> > 47-01 111 th Street
> > Corona, New York 11368
> > phone: 718 699 0005 x 356
> > facsimile:718 699 1341
> > mweiss at nyhallsci.org> > http://www.nyhallsci.org> > ---
