Аннотация: 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.
WOS
Держатели документа:
VN Sukachev Inst Forest SB RAS, Lab Reforestat Mycol & Plant Pathol, Krasnoyarsk 660036, Russia.
Reshetnev Siberian State Univ Sci & Technol, Dept Chem Technol Wood & Biotechnol, Krasnoyarsk 660037, Russia.
Swedish Univ Agr Sci SLU, Dept Forest Mycol & Plant Pathol, POB 7026, SE-75007 Uppsala, Sweden.
Mendel Univ Brno, Dept Forest Protect & Wildlife Management, Zemedelska 3, Brno 61300, Czech Republic.
Доп.точки доступа:
Pavlov, Igor N.; Vasaitis, Rimvydas; Litovka, Yulia A.; Stenlid, Jan; Jankovsky, Libor; Timofeev, Anton A.; Menkis, Audrius; Timofeev, Anton; Swedish Research Council FormasSwedish Research CouncilSwedish Research Council Formas [2019-00597]; EU European Structural and Investment Funds, Operational Programme Research, Development and Education, (OP RDE project "MENDELU international development") [CZ.02.2.69/0.0/0.0/16_027/0007953]; Ministry of Education, Youth and Sports of the Czech RepublicMinistry of Education, Youth & Sports - Czech Republic; Swedish University of Agricultural Sciences