Hosts
D. dadantii causes disease on several different ornamental and horticultural host plants throughout the world including: tropical, subtropical, and temperate climates. The host range of D. dadantii continues growing as new susceptible species are continuously being documented. It has also been found in soils, rivers and irrigation water. Host specificity is not yet fully understood. Originally pathovar groups were documented according to the hosts from which they were isolated. Today 50+ species have been identified and more are possible if another classification system based on biovars were to be used. Disease is most often reported on bananas, carnations, and chrysanthemums, but the list of host species is quite vast. Important host families and species economically affected include:
| Susceptible Families | Examples of specific species affected |
|---|---|
| Solanaceae | peppers, potato, eggplant, tomato, tobacco |
| Convolvulaceae | sweet potato |
| Brassicaceae | brocolli, radishes |
| Apiaceae | celery, carrot |
| Poaceae | sugar cane, sorghum, rice |
| Bromeliaceae | pineapple, urn plant |
| Asparagaceae | asparagus |
| Amaryllidaceae | onions |
There are also many significant hosts for D. dadantii present in ornamental and floriculture industries, with the families including:
| Susceptible Families | Examples of specific species affected |
|---|---|
| Orchidaceae | orchids |
| Liliaceae | tulips |
| Asteracea | chickory, chrysanthemums |
| Caryophyllaceae | carantions |
| Asparagaceae | hyacinths, dracnena |
| Crassulaceae | sedums |
| Amaryllidaceae | amaryllis |
| Begoniaceae | begonia |
Note: the plant families listed above show examples of some specific species infected within each family, not to say D. dadantii has the ability to infect every species within a family.
Read more about this topic: Erwinia Chrysanthemi