Brenneria (genus)

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symptoms of oak decline, a) weeping stem, b) cracked bark, c) lesions in the inner bark - with Brenneria goodwinii being present in 80% of the advanced symptomatic tissues (click on image to enlarge it)
Author(s): Carrie Brady, Dawn Arnold, James McDonald and Sandra Denman
Source: World Journal of Microbiology and Biotechnology (2017), art. 143, p. 2

Brenneria Hauben et al. 1999

This genus of bacteria is widely distributed and belongs to the Enterobacteria. It contains around 10 species that are mainly pathogens of woody plants, including forest trees like willow, poplar and oak, or nut trees. They mainly infect the xylem of their host trees, causing trunk cankers, often bleeding ones, that result in wilting and decline diseases. For example, Brenneria nigrifluens is a pathogens of walnut in Europe and western Asia. The species have been previously classified under the genus Erwinia and are Gram-negative rods, 1½-3 µm long.

Type species: Brenneria salicis


Currently, the following species have been entered into the system: