Fungal Diversity (2008) 31, 73-81

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L. Lombard, M. Bogale, F. Montenegro, B.D. Wingfield and M.J. Wingfield (2008)
A new bark canker disease of the tropical hardwood tree Cedrelinga cateniformis in Ecuador
Fungal Diversity 31, 73-81
Abstract: Cedrelinga cateniformis is an indigenous leguminous tree that occurs naturally in the Amazonian regions of Ecuador, Peru and Colombia. This tree is economically valuable for wood production and it is also culturally important to rural communities in these countries. A canker disease has recently emerged on C. cateniformis in Ecuadorian plantations of this tree. The disease is characterized by severe cracks in the bark, from which kino exudes; wood discoloration is associated with these cracks; as well as die-back and stunted growth. The aim of this study was to determine the cause of the disease. Isolation from cankers consistently yielded species of Fusarium. These species were identified as F. solani, F. oxysporum and F. decemcellulare based on morphology as well as on comparisons of their partial Translation Elongation Factor-1a gene sequences. In inoculation trials, all three species resulted in cankers that were similar to those found on trees under natural conditions. The three species were also consistently re-isolated from lesions that resulted from inoculations. Results of this study suggest that the canker disease on C. cateniformis is caused by the three Fusarium spp., which have similar degrees of pathogenicity.
Full text of article
Database assignments for author(s): Lorenzo Lombard, Michael J. Wingfield, Brenda D. Wingfield, Mesfin Bogale

Research topic(s) for pests/diseases/weeds:
identification/taxonomy


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Neocosmospora solani Cedrelinga (crop) Ecuador (continental)