Brenneria salicis
| Brenneria salicis | |
|---|---|
| Scientific classification | |
| Kingdom: | Bacteria |
| Phylum: | Proteobacteria |
| Class: | Gamma Proteobacteria |
| Order: | Enterobacteriales |
| Family: | Enterobacteriaceae |
| Genus: | Brenneria |
| Binomial name | |
|
Brenneria salicis (Day 1924) Hauben et al. 1999 |
|
| Synonyms | |
|
Bacterium salicis Day 1924 |
|
Bacterium salicis Day 1924
Phytomonas salicis (Day 1924) Magrou 1937
Pseudobacterium salicis (Day 1924) Krasil’nikov 1949
Erwinia amylovora var. salicis Martinec and Kocur 1963
Pseudomonas saliciperda Lindeijer 1932
Erwinia salicis (Day 1924) Chester 1939
Brenneria salicis is a Gram-negative bacterium that is pathogenic on plants.
The bacterium is known to cause 'watermark disease' in willow (Salix ssp.) trees. Watermark disease affects infected trees by occluding the xylem vessels, impeding circulation. Early signs of the disease are wilting or dried-out, dead leaves on intermittent branches throughout the tree's crown. Cross sections from affected branches show a watery, transparent discoloration to an orange-brown staining in the wood. Cross sections of a killed tree's main stem are blanched completely white.
The white willow, S. alba, is very sensitive to watermark disease, while the crack willow, S. fragilis, is considerably less so. Hybrids of these two species have shown intermediate sensitivity.
Maes, M; Baeyen, S; De Croo, H; De Smet, K; Steenackers, M (2002). "Monitoring of endophytic Brenneria salicis in willow and its relation to watermark disease.". Plant Protection Science. 38 (Special Issue 2): 528.
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