>If I remember well
>this ability is important while "classify" them in "taxonomy" groups.
>If they replicate in the vector they are named to be "persistent" if
>they do not... well NON-PERSISTENT
Sorry to be picky, but the term PERSISTENT relates to the fact that the
virus persists in the insect vector - ie is not lost on moulting. It is not
safe to assume that this means that the virus is replicating. Within the
PERSISTENT grouping there are two subgroups; CIRCULATIVE and PROPAGATIVE.
As these names suggest the PROPAGATIVE viruses are actually replicating,
whearas the CIRCULATIVE ones are not (as far as we know).
There are cases of transovarial transmission - ie from parent to offspring.
If you want a good starting point for some reading you can't do much better
than Chapter 14 of 'Plant Virology', by REF Matthews (3rd Edition) 1991,
Academic press, ISBN 0-12-480553-1
: Dr. Cris Woolston :
: Department of Applied Biology :
: University of Hull, Cottingham Road, Hull HU6 7RX, UK :
: RFC-822: C.J.Woolston at applied-biology.hull.ac.uk :
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