First report of Xanthomonas axonopodis pv. citri in Bolivia
In Bolivia, during 1999-2000, lesions were observed on leaves, twigs and fruits on cultivated citrus in the Cochabamba and Santa Cruz Departments. Lesions were yellow/brown, raised and corky. They later darkened and developed central depressions. The edges of the lesions remained raised and were frequently surrounded by a chlorotic halo. Gram-negative bacteria producing yellow-pigmented, mucoid colonies on yeast dextrose agar were consistently isolated from the leaf lesions. Various tests (pathogenicity tests, fatty acid profiles, several PCR assays) showed that the Bolivian isolates were Xanthomonas axonopodis pv. citri (EPPO A1 quarantine pest). The authors noted that although citrus canker has been suspected in Bolivia for a number of years, this is the first confirmed report in Bolivia.
The situation of Xanthomonas axonopodis pv. citri in Bolivia can be described as follows: Present, first found in 1999/2000 in Cochabamba and Santa Cruz Departments.
Sources
|
Braithwaite, M.; Leite, R.P.; Smith, J.J.; Boa, E.; Saddler, G.S. (2001) First report of citrus canker caused by Xanthomonas campestris pv. citri on Citrus sinensis in Bolivia.
New Disease Reports, volume 4.
http://www.bspp.org.uk/ndr/jan2002/2001-39.htm
|