Canadian Forest Service Publications

Fireweed (Epilobium angustifolium) as a possible inoculum reservoir for root-rotting Armillaria species. 1993. Klein-Gebbinck, H.W.; Blenis, P.V.; Hiratsuka, Y. Canadian Journal of Plant Pathology 42: 132-136.

Year: 1993

Available from: Northern Forestry Centre

Catalog ID: 21130

Language: English

CFS Availability: Order paper copy (free), PDF (request by e-mail)

Abstract

Two glasshouse experiments were conducted to determine the potential for Armillaria species to infect fireweed and subsequently use it as a food base for attacking lodgepole pine. Aspen segments colonized by A. mellea and A. ostoyae were used to inoculate fireweed roots. Both species caused infection, although the former was more pathogenic, attacking 28 of 42 inoculated fireweed roots as opposed to 8 of 60 in the case of the latter species. None of the nine pines inoculated with segments of fireweed roots colonized by A. ostoyae became infected, even though the isolates were pathogenic on pine when aspen segments were used as the food base. In contrast, 8 of 29 pine seedlings inoculated with fireweed colonized by A. mellea were killed, thus suggesting that fireweed could play some role in the epidemiology of this disease.

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