Mycobiology.  2008 Dec;36(4):199-202. 10.4489/MYCO.2008.36.4.199.

Introduction to Distribution and Ecology of Sterile Conks of Inonotus obliquus

• Lee MW
• Hur H
• Chang KC
• Lee TS
• Ka KH
• Jankovsky

• KMID: 1487345
• DOI: http://doi.org/10.4489/MYCO.2008.36.4.199

Abstract

Inonotus obliquus is a fungus that causes white heart rot on several broad-leaved species. This fungus forms typical charcoal-black, sterile conks (chaga) or cinder conks on infected stems of the birche (Betula spp). The dark brown pulp of the sterile conk is formed by a pure mycelial mass of fungus. Chaga are a folk remedy in Russia, reflecting the circumboreal distribution of I. obliquus in boreal forest ecosystems on Betula spp. and in meridional mountain forests on beech (Fagus spp.) in Russia, Scandinavia, Central Europe, and Eastern Europe. Distribution at lower latitudes in Western and Southern Europe, Northern America, Asia, Japan, and Korea is rare. Infected trees grow for many years without several symptoms of decline. The infection can penetrate through stem injuries with exterior sterile conks developing later. In the Czech Republic, cinder conk is found on birches inhabiting peat bogs and in mountain areas with a colder and more humid climate, although it is widespread in other broad leaved species over the Czech Republic. The most common hosts are B. pendula, B. pubescens, B. carpatica, and F. sylvatica. Less frequent hosts include Acer campestre, Acer pseudoplatanus, Alnus glutinosa, Alnus incana, Fraxinus excelsior, Quercus cerris, Q. petraea, Q. robur, Q. delachampii, and Ulmus sp.

Keyword

Betula spp.; Birch; Chaga; Cinder conk; Inonotus obliquus; Sterile conks

MeSH Terms

Acer
Alnus
Asia
Betula
Climate
Czech Republic
Ecology
Ecosystem
Europe
Europe, Eastern
European Continental Ancestry Group
Fagus
Fraxinus
Fungi
Heart
Humans
Japan
Korea
Medicine, Traditional
North America
Quercus
Russia
Scandinavia
Soil
Trees
Ulmus
Wetlands
Soil