ID Aids for Xanthomonas diseases

We were motivated to select this set of ID Aids by a recent quarantine expansion for citrus canker in Texas. Citrus canker is one of many plant diseases caused by Xanthomonas species. Xanthomonas pathovars (pathogenic varieties within a species) tend to be highly host-specific, and citrus is only one of the economically important plants that they can infect. We chose ID Aids that illustrate the range of crop and horticulture plants Xanthomonas affects.

Be on the lookout for ID Aids focusing on citrus canker in the near future.

Bacterial Blight of Anthuriums: Hawaii’s Experience with a Global Disease

University of Hawaii, United States of America

Covers Xanthomonas axonopodis pv. dieffenbachiae introduction, symptoms, detection, and monitoring. Includes images of symptoms on Anthurium plants.

Sugarcane Leaf Scald Disease

University of Florida, United States of America

This fact sheet on Xanthomonoas albilineans describes symptoms and includes images of the symptoms on sugarcane, and covers bacterium ecology and disease spread, prevention and control.

Pathogen Profile - Xanthomonas oryzae pathovars: Model Pathogens of a Model Crop

Molecular Plant Pathology 7 (5): 303-324

Discusses X. oryzae pv. oryzae and X. oryzae pv. oryzicola, causal agents of bacterial blight and bacterial leaf streak in rice, respectively. Covers classification, distribution, symptoms, morphology, physiology, dissemination, modes of infection, and molecular data. Includes images of rice symptoms as well as of the pathogens themselves.

Xanthomonas Leaf Blight of Onion

Colorado State University Extension, United States of America

Fact sheet describes and illustrates Xanthomonas axonopodis pv. allii disease development, symptoms, and management in onion.

Bacterial Angular Leaf Spot of Strawberry

Cornell University Cooperative Extension, United States of America

Describes Xanthomonas fragariae symptoms in strawberry (accompanied by images), the disease cycle, and conditions favoring infection.