The preferred hosts of E. tracheiphila are in the cucurbit family (wild and cultivated species), of which cucumbers are “the most susceptible host, followed by. Erwinia tracheiphila is the causal agent of bacterial wilt of cucurbits, an economically important phytopathogen affecting few cultivated. E. tracheiphila induces severe wilting symptoms in many wild and cultivated cucurbits, especially cucumber (Cucumis sativa) and musk melon (Cucumis melo ).

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If the stem is cut near the crown and the ends are slowly pulled apart, the sap should form a viscous string. Foliage appears yellow before the entire plant collapses and dies.

This page was last modified Hoffmann from the Compendium of Cucurbit Diseases. Cucumber beetles must be controlled by appropriate insecticide programs.

Bacterial wilt is a disease of the vascular tissue. Weather has little effect on the incidence of wilt, but may influence the rate of symptom expression. Bacterial wilt of cucurbits. Bacteria spread throughout the plant through adjacent xylem vessels. Privacy policy About Bugwoodwiki Disclaimers. In field trials, vector control using this technique outperformed an insecticidal approach Zehnder et al. Enterobacteriaceae Bacterial plant pathogens and diseases Eudicot diseases.

Cucurbits, Bacterial Wilt

Go to distribution map The bacteria is capable of overwintering in the gut of its insect vectors. Wilted runners will appear dark green at first before becoming necrotic as the wilting becomes irreversible. Continuing to use www. The pathogen overwinters in the digestive tracts of the spotted and striped cucumber beetles. By using this site, you agree to the Terms of Use frwinia Privacy Policy.


Retrieved from ” https: Bacterial wilt is caused by the bacterium Erwinia tracheiphila. The most common symptom is the rapid wilting of individual runners or whole plants.

Bacterial wilt caused by Erwinia tracheiphila is a serious threat to commercial cucumber and melon production and is rapidly becoming more important in pumpkin and squash cultivation.

Plant a sprayed perimeter trap crop of Blue Hubbard squash to protect more susceptible crops. Once a plant is infected, erwniia is no way of stopping the spread of the disease.

Erwinia tracheiphila Bacterial wilt caused by Erwinia tracheiphila is a serious threat to commercial cucumber and melon production and is rapidly becoming more important in pumpkin and squash cultivation. Content is available for non-profit, educational use under our Copyright Agreement. The beetles feed on leaves and stems, E. Resistant cultivars of cucumber are being developed.

For PC, position your mouse cursor on the featured image, click the right mouse button, and choose “Save Trachiphila As Views Read Edit View history. Copyright is not claimed for material provided by United States government employees as part of their work. North American Amphibian Monitoring Program. Contemporary research has focused on plant growth promoting rhizobacteria to reduce feeding by beetle vectors and errwinia spread of E.

Sticky strand test on cut stems, with bacterial slime streaming from xylem tissues. However, the disease will soon spread down the runner and then infect the whole plant, causing it to shrivel and die. The impact of bacterial wilt in more tolerant cucurbits is substantially less Brust, b.


A diagnostic procedure for determining bacterial wilt Latin, is to cut the stem, bring the two cut pieces back together and slowly pull apart. Infected plants serve as a reservoir of bacteria for subsequent infections.

Bacterial wilt, caused by Erwinia tracheiphila.

Erwinia tracheiphila Bacterial wilt of cucurbits From Bugwoodwiki. There is a diagnostic test for bacterial wilt that can be done in the field.

Knowledge Bank home Change location. However, since wilt-resistant plants have not yet been developed, the most effective way to prevent the disease is to keep beetle populations at a minimum. Fruit is rarely harvestable on plants that show wilt symptoms because the fruit is of such poor quality as to be unmarketable.

Erwinia tracheiphila (Bacterial wilt of cucurbits) – Bugwoodwiki

Spunbonded row covers will exclude beetles. Cookies on Plantwise Knowledge Bank Like most websites we use cookies. For Mac, click the only mouse button and follow the same steps.

Like most websites we use cookies. Often affected plant parts will appear dark green before irreversible eerwinia. All components of APSnet are copyrighted and may not be reproduced or distributed except by express permission of APS. Others such as, Yardim et al. This is to ensure that we give you the best experience possible. The beetles acquire E.