Abstract
Quantitation and detection of xylem-limited bacteria with an enzyme-linked immunosorbent assay with a peroxidase conjugate is described. The use of the Trinder reagent (4-aminoantipyrine) allows the determination of extremely small quantities of peroxidase with no precipitate formation or inactivation of the enzyme by H2O2. Comparison of the enzyme-linked immunosorbent assay method with microscopic and histochemical tests for the presence of the phony peach disease bacterium in 9-year-old “June Gold” peach trees gave comparable results. The peroxidase conjugate with the Trinder reagent is more sensitive than the alkaline phosphatase conjugate typically used for enzyme-linked immunosorbent assay quantitation.
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Selected References
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