Xanthomonas hortorum
| Xanthomonas hortorum | |
|---|---|
| Leaf spot on English ivy plant, caused by Xanthomonas hortorum | |
| Scientific classification | |
| Domain: | Bacteria |
| Kingdom: | Pseudomonadati |
| Phylum: | Pseudomonadota |
| Class: | Gammaproteobacteria |
| Order: | Xanthomonadales |
| Family: | Xanthomonadaceae |
| Genus: | Xanthomonas |
| Species: | X. hortorum |
| Binomial name | |
| Xanthomonas hortorum Vauterin et al. 1995 | |
Xanthomonas hortorum is a plant pathogen. It includes the following pathovars:
- pv. hederae, common ivy and possibly other Araliaceae
- pv. taraxaci, Pelargonium peltatum
- pv. carotae, wild carrot
- pv. pelargonii, Kazakh dandelion
- pv. vitians, bacterial leafspot and headrot of lettuce, using the neopathotype of LMG 938
- pv. cynarae, formerly Xanthomonas cynarae, pathogenic on artichoke
- pv. gardneri, formerly Xanthomonas gardneri and briefly X. cynarae pv. gardneri, bacterial leafspot of peppers and tomatoes (pathotype also causes BLS on lettuce surprisingly)
The species was originally defined in 1995 as a grouping of pathovars hederae, taraxaci, carotae, pelargonii from Xanthomonas campestris, and the lettuce-infecting part of X. c. pv. vitians. (X. c. pv. vitians was found to consist of two genetic groups, only one of which causes disease on lettuce.)