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6 Wood Discoloration

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164 8 Habitat of <strong>Wood</strong> Fungi<br />

Table 8.3. Some bark diseases (compiled from Butin 1995, supplemented from Jung and<br />

Blaschke 2005)<br />

Disease Causal fungus Classification<br />

Phacidium disease of conifers Phacidium coniferarum (Hahn) DiCosmo Helotiales (A)<br />

Spruce bark disease Nectria fuckeliana Booth Hypocreales (A)<br />

Crumenulopsis stem canker Crumenulopsis soraria (P. Karsten) Groves Helotiales (A)<br />

of pine<br />

Pine stem rust Cronartium flaccidum (Alb. & Schwein.) Uredinales (B)<br />

(Resin-top disease) Winter<br />

Endocronartium pini (Pers.) Hiratsuka Uredinales (B)<br />

White pine blister rust Cronartium ribicola J.C. Fischer Uredinales (B)<br />

Larch canker Lachnellula willkommii (R. Hartig) Dennis Helotiales (A)<br />

Beech canker Nectria ditissima Tul. Hypocreales (A)<br />

Beech bark disease Nectria species Hypocreales (A)<br />

Black bark scab of beech Ascodichaena rugosa Butin Rhytismatales (A)<br />

Fusicoccum bark canker of oak Fusicoccum quercus Oudem. Coelomycetes (D)<br />

Chestnut blight Cryphonectria parasitica (Murrill) Barr Diaporthales (A)<br />

Dothichiza bark necrosis and Cryptodiaporthe populea (Sacc.) Butin Diaporthales (A)<br />

dieback of poplar<br />

Canker stain of plane Ceratocystis fimbriata (Ellis & Halstead)<br />

Davidson f. platani Walter Ophiostomatales (A)<br />

Stereum canker rot of Red oak Stereum rugosum (Pers.) Fr. Aphyllophorales (B)<br />

Pezicula canker of Red oak Pezicula cinnamomea (DC.) Sacc. Helotiales (A)<br />

Coral spot Nectria cinnabarina (Tode) Fr. Hypocreales (A)<br />

Sooty bark disease of sycamore Cryptostroma corticale (Ell. & Ev.) Hyphomycetes (D)<br />

Gregory & Waller<br />

Sudden oak death Phytophthora ramarum (Werres, Pythiales (O)<br />

De Cock & Man in’t Veld)<br />

A ascomycete, B basidiomycete, D deuteromycete, O oomycete<br />

Lang 1980; Eisenbarth et al. 2001). It develops particularly on trees older<br />

than 60 years of European Fagus sylvatica and American beech F. grandifolia<br />

by a disturbance of the water regime due to a abiotic/biotic factor complex:<br />

moist site, dry summer, participation of the Beech scale, Cryptococcus fagisuga<br />

(Lunderstädt 2002) and either one of two bark-killing Ascomycetes, in Europe<br />

Nectria galligena and in North America N. coccinea var. faginata (Mahoney<br />

et al. 1999), and possibly of mycoplasmas. Classical pathogenesis is an often<br />

short-lived mass reproduction of the Beech scale, which causes subcortical<br />

changes and subsequent infestation with Nectria. Xylem breeding Trypodendron<br />

domesticum and Hylecoetus dermestoides may follow. The larval galleries<br />

may be subsequently colonized by white-rot fungi. The susceptibility to the<br />

disease is biotically effected, whereby the physiological condition of the tree<br />

and its genetic potential determine the efficacy of the damaging agents (Beech<br />

scale, Nectria spp., beetles, white-rot fungi). The outbreak and/or healing can<br />

be controlled by the site conditions (Braun 1977; Lunderstädt 1992).<br />

The fungus invades the bark that was previously altered by the feeding<br />

activity of the Beech scale. A red-brown to blackish (bark tannic substances)<br />

slimy liquid may ooze from the bark tissue (Wudtke 1991). Under the bark<br />

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