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Capture by: polyclonal antibody
Detection by: polyclonal antibody
Price code: C
Acronym: Xf
Xylella fastidiosa (Xf) causes such diseases as Pierce's
disease of grapes, citrus variegated chlorosis, and phony peach
disease. The bacterium, found in xylem tissue, has a large host range,
including at least 28 families of both monocotyleyledonous and
dicotyledonous plants. It is spread mainly by sharpshooter
leafhoppers, and also by spittlebugs.
Some other diseases Xf causes are alfalfa dwarf, almond leaf scorch, plum leaf scald, periwinkle wilt, and leaf scorch of elm, oak, maple, sycamore, and mulberry. Xf is also being studied as a possible cause of the newly identified disease, oleander leaf scorch, and has been reported in coffee.
This test system is based on a mixture of antibodies from three serologically distinct isolates of Xf. It detects all of a large panel of Xf isolates, including ones from almond, citrus, grape (8 isolates), elm, mulberry (2 isloates), oak (6 isolates), periwinkle, ragweed, and sycamore. This system shows no cross-reaction with any healthy tissue tested.
Although Xf has not been shown to be the causal organism of oleander leaf scorch, this ELISA test reacts positively with samples from oleander plants with the disease.
The highest populations of Xf bacteria occur in petioles of infected plants. When symptoms are evident on leaf surfaces, the bacteria responsible are most likely located in the petioles of affected leaves. We recommend that you use leaf petiole tissue for Xf testing when possible. All other parts of the plant can also be tested with this test system.
Sherald, J. L. and Lei, J. D. 1991. Evaluation of a Rapid ELISA Test Kit for Detection of Xylella fastidiosa in Landscape Trees. Plant Disease 75:200-203.
Beretta, M. J. G. et al. 1996. First report of Xylella fastidiosa in coffee. Plant Disease 80:821. D-1996-050-01N.
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| Conjugated Antibody, Peroxidase label, 5000 testwells Price (USA): $950 | |
| Negative control Price (USA): $20 | |
| Positive control, lyophilized Price (USA): $15 | |
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