Diaporthe actinidiae, a New Species Causing Stem-End Rot of Chinese Gooseberry Fruits

1 May 1975

journal article
research article
Published by Taylor & Francis in Mycologia

Vol. 67 (3) , 650-653
https://doi.org/10.2307/3758400

Abstract

A stem-end rot of ripe fruit of the Chinese gooseberry or "Kiwi" (Actinidia chinensis Planchon) imported from the Auckland region of New Zealand was observed in Chicago (USA) in 1968 by Beraha, who described the disease. Isolations from diseased fruits consistently yielded a Phomopsis sp. highly pathogenic to gooseberry fruits. Forty-five isolates were observed in culture but none produced the sexual state. In 1971, isolations were made from similarly diseased New Zealand fruits at Davis, California (USA) of 17 isolates, 12 produced only the Phomopsis state, while 5 developed abundant perithecia of an apparently undescribed Diaporthe sp. [D. actinidiae sp. nov.] after 6-8 wk on potato-dextrose agar (PDA) at 20-25.degree. C. Neither perithecia nor pycnidia were observed in the host fruit.

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