Pleurotus abieticola (Agaricales, Basidiomycota) as a pioneer xylosaprotroph associated with spruce sites dieback caused by Ips typographus

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Resumo

The xylosaprotrophic agaricomycete Pleurotus abieticola, described in 1997, is still poorly studied in ecological terms. The objective of this paper is to study the ecological characteristics of P. abieticola using the material from two large dry spruce sites (causal agent Ips typographus) in the Gladyshevsky and Shchuchye Lake protected areas (Saint Petersburg, Russia), where mass fructification of this species was found. The field species identification was confirmed by the results of ITS rDNA sequencing. A detailed study of drying stands revealed new fine features of the ecology and morphology of P. abieticola. A saprotrophic pioneer complex which includes P. abieticola has been identified (Fomitopsis pinicola, Trichaptum abietinum, Gloeophyllum sepiarium, Armillaria ostoyae, Amaropostia stiptica, Exidia nigricans, E. saccharina, Dacrymyces stillatus, Heterobasidion parviporum, Phlebiopsis gigantea, Stereum sanguinolentum). The causes of the mass distribution of Pleurotus abieticola in spruce stands affected by Ips typographus are discussed.

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Sobre autores

D. Shabunin

St. Petersburg State Forest Technical University named after S. M. Kirov

Autor responsável pela correspondência
Email: ds1512@mail.ru
Rússia, St. Petersburg

I. Zmitrovich

Komarov Botanical Institute of the Russian Academy of Sciences

Email: iv_zmitrovich@mail.ru
Rússia, St. Petersburg

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2. Fig. 1. The drying European spruce site as a result of the impact of Ips typographus (Shchuchye Lake protected area).

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3. Fig. 2. Pleurotus abieticola basidiomata: a – on a dead trunk of Picea abies in stand attacked by Ips typographus (Shchuchye Lake protected area); b – on a dead trunk of Pinus sylvestris affected by Tomicus piniperda (Gladyshevsky protected area).

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4. Fig. 3. Basidiomata of Pleurotus abieticola (LE 287757, LE 287758) appeared on dead wood of Picea abies (Gladyshevsky protected area): a – upperside of young fruiting bodies; b – upperside of mature fruiting bodies; c – young fruiting bodies from the front; d – hymenophore of mature fruiting bodies (the favoloid pattern is visible on the part of descending onto the stipe). Scale bar – 5 cm.

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5. Fig. 4. Basidiomata of Pleurotus abieticola grown on a necrotic area of a living Picea abies tree (Leningrad Region, Vaskelovo settlement, 12.09.2014, leg. I. V. Zmitrovich).

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