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Stem necrosis of Populus deltoides X P. trichocarpa in New Zealand caused by Xanthomonas campestris pv. Populi
Author(s) -
Hawortharsen R. H.,
Spiers A. G.
Publication year - 1988
Publication title -
european journal of forest pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.535
H-Index - 49
eISSN - 1439-0329
pISSN - 0300-1237
DOI - 10.1111/j.1439-0329.1988.tb00919.x
Subject(s) - biology , xanthomonas campestris , populus trichocarpa , necrosis , xanthomonas , outbreak , blight , botany , bacteria , xanthomonas campestris pv. campestris , microbiology and biotechnology , virology , genetics , genome , gene
One‐year‐old nursery‐grown trees of Populus deltoides X P. trichocarpa parentage exhibited stem necrosis and lesioning during the unusually moist 1985–1986 growing season. A yellow‐pigmented, Gram negative, aerobic, monotrichous bacterium which utilized salicin was isolated from infected tissue almost in pure culture. The bacterium was identified as Xanthomonas campestris pv. populi and pathogenicity tests revealed it to be the causal organism. This is the first recorded outbreak in New Zealand of stem necrosis of poplars caused by X. campestris pv. populi. The bacterium appears to be an opportunistic pathogen.