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Research article - Peer-reviewed, 2020

Occurrence and pathogenicity of Corinectria spp. - an emerging canker disease of Abies sibirica in Central Siberia

Pavlov, Igor N.; Vasaitis, Rimvydas; Litovka, Yulia A.; Stenlid, Jan; Jankovsky, Libor; Timofeev, Anton A.; Menkis, Audrius

Abstract

During recent years, a new disease of Siberian fir (A. sibirica) emerged in Central Siberia, exhibiting symptoms of stem/branch deformation, cambium necrosis, and dieback of branches and twigs, the causal agent remaining unknown. The aim was to identify agent of the disease and to investigate its pathogenicity to A. sibirica and Norway spruce (Picea abies). Symptomatic tissues of fir were subjected to pure culture isolation of anticipated pathogen(s). Obtained isolates were subjected to molecular identification, phylogenetic analyses, and pathogenicity tests with A. sibirica saplings, and seeds and seedlings of A. sibirica and P. abies. The study demonstrated that, (i) most commonly isolated fungus from canker wounds of A. sibirica exhibited Acremonium-like anamorphs; (ii) phylogeny demonstrated that investigated fungi belong to genus Corinectria, but are genetically well separated from other worldwide known Corinectria spp.; (iii) one species of isolated fungi has the capacity to cause the disease and kill A. sibirica saplings and seedlings, but also seedlings of P. abies. Guidelines for future research were defined in order to generate needed information on species description, its origin and ecology, and estimation of potential risks upon the eventual invasion of the pathogen to new geographic areas, in particular of Europe.

Published in

Scientific Reports
2020, volume: 10, number: 1, article number: 5597
Publisher: NATURE PUBLISHING GROUP

Authors' information

Pavlov, Igor N.
Russian Academy of Sciences
Swedish University of Agricultural Sciences, Department of Forest Mycology and Plant Pathology
Litovka, Yulia A.
Russian Academy of Sciences
Swedish University of Agricultural Sciences, Department of Forest Mycology and Plant Pathology
Jankovský, Libor
Mendel University in Brno
Timofeev, Anton A.
Russian Academy of Sciences
Swedish University of Agricultural Sciences, Department of Forest Mycology and Plant Pathology

Sustainable Development Goals

SDG15 Life on land

UKÄ Subject classification

Forest Science

Publication Identifiers

DOI: https://doi.org/10.1038/s41598-020-62566-y

URI (permanent link to this page)

https://res.slu.se/id/publ/107717