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Subject: First report of stem canker of pitahaya (Hylocereus undatus Haworth) caused by Botryosphaeria dothidea in Mexico
Date posted: July 02, 2003
Source: British Society of Plant Pathology, New Disease Reports
Hylocereus undatus Haworth or pitahaya is an epiphytic cactus plant endemic to Mexico. The harvested fruit is gaining popularity as an export commodity from small-scale farms in Mexico. In 2001 and 2002, samples of H. undatus with stem spots were collected from various sites in Puebla, Mexico. A fast-growing gray fungus was consistently isolated from the stems and was later determined to be Botryosphaeria dothidea (Moug.:Fr.) Ces. & De Not. This is the first report of stem canker of H. undatus caused by B. dothidea, a fungus previously reported to cause panicle and shoot blight and canker diseases in pistachio, peach, apple, forest trees, chaparral bushes, and many other plant species.

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