Vigfrid Ness wrote:-
>> My comment is: Have you tried the NAD/H amplification system for AP-conjugates.
> My own experience with it isn't the best - the system was too sensitive when
> it came to background noice but I know about people in Wageningen who has
> had good experience with it for detection of plant pathogens.
> Thanks for your comment. I have in fact tried the NAD/H amplification
system, and my experience was exactly the same as yours. The situation
was even worse when I tried to use tuber sap as opposed to leaf sap. I
have also used a luminescence based assay, which did actually prove to
be about 10 x more sensitive at it's best, but the Titanium oxide plates
I purchased from Dynatech were very unreliable and tended to go of over
Has anyone else had any similar problems?
e-mail: djones at scri.sari.ac.uk