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Relative Abilities of Phialophora melinii, Fomes connatus, and F. igniarius to Invade Freshly Wounded Tissues of Acer rubrum. Alex L. Shigo, Chief Plant Pathologist, U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station, Durham, New Hampshire 03824; Phytopathology 64:708-710. Accepted for publication 7 December 1973. DOI: 10.1094/Phyto-64-708.

Phialophora melinii, Fomes connatus, and F. igniarius were inoculated into wounds inflicted in Acer rubrum in June. After 12 wk, P. melinii was isolated from 50 of 54 wounds inoculated with it, F. connatus was isolated from one wood chip of 874 from 72 wounds inoculated with it, and F. igniarius was not isolated. Bacteria, Graphium sp. and Cytospora sp. were isolated frequently. Phialophora melinii, Graphium sp., Cytospora sp., and bacteria were pioneer microorganisms infecting the type of wounds inflicted in A. rubrum in June, while F. connatus and F. igniarius were not.

Additional keywords: wood discoloration and decay, succession of microorganisms.