title: High-Throughput Sequencing Reveals Drastic Changes in Fungal Communities in the Phyllosphere of Norway Spruce (Picea abies) Following Invasion of the Spruce Bud Scale (Physokermes piceae).
abstract: The aim of this study was to assess the diversity and composition of fungal communities in damaged and undamaged shoots of Norway spruce (Picea abies) following recent invasion of the spruce bud scale (Physokermes piceae) in Lithuania. Sampling was done in July 2013 and included 50 random lateral shoots from ten random trees in each of five visually undamaged and five damaged 40-50-year-old pure stands of P. abies. DNA was isolated from 500 individual shoots, subjected to amplification of the internal transcribed spacer of fungal ribosomal DNA (ITS rDNA), barcoded and sequenced. Clustering of 149,426 high-quality sequences resulted in 1193 non-singleton contigs of which 1039 (87.1 %) were fungal. In total, there were 893 fungal taxa in damaged shoots and 608 taxa in undamaged shoots (p < 0.0001). Furthermore, 431 (41.5 %) fungal taxa were exclusively in damaged shoots, 146 (14.0 %) were exclusively in undamaged shoots, and 462 (44.5 %) were common to both types of samples. Correspondence analysis showed that study sites representing damaged and undamaged shoots were separated from each other, indicating that in these fungal communities, these were largely different and, therefore, heavily affected by P. piceae. In conclusion, the results demonstrated that invasive alien tree pests may have a profound effect on fungal mycobiota associated with the phyllosphere of P. abies, and therefore, in addition to their direct negative effect owing physical damage of the tissue, they may also indirectly determine health, sustainability and, ultimately, distribution of the forest tree species.
authors.affiliation: Department of Forest Mycology and Plant Pathology, Uppsala BioCenter, Swedish University of Agricultural Sciences, P.O. Box 7026, SE-75007, Uppsala, Sweden. Audrius.Menkis@slu.se.
authors.forename: Audrius
authors.initials: A
authors.lastname: Menkis
authors.affiliation: Institute of Forestry, Lithuanian Research Centre for Agriculture and Forestry, Liepų str. 1, Girionys, LT-53101, Kaunas, Lithuania.
authors.forename: Adas
authors.initials: A
authors.lastname: Marčiulynas
authors.affiliation: Institute of Forestry, Lithuanian Research Centre for Agriculture and Forestry, Liepų str. 1, Girionys, LT-53101, Kaunas, Lithuania.
authors.forename: Artūras
authors.initials: A
authors.lastname: Gedminas
authors.affiliation: Institute of Forestry, Lithuanian Research Centre for Agriculture and Forestry, Liepų str. 1, Girionys, LT-53101, Kaunas, Lithuania.
authors.forename: Jūratė
authors.initials: J
authors.lastname: Lynikienė
authors.affiliation: Institute of Forestry, Lithuanian Research Centre for Agriculture and Forestry, Liepų str. 1, Girionys, LT-53101, Kaunas, Lithuania.
authors.forename: Aistė
authors.initials: A
authors.lastname: Povilaitienė
mesh_terms: D000818:Animals; D001483:Base Sequence; D044822:Biodiversity; D057231:Climate Change; D004271:DNA, Fungal / Q000235:genetics; D004275:DNA, Ribosomal / Q000235:genetics; D021903:DNA, Ribosomal Spacer / Q000235:genetics; D065928:Forests; D005658:Fungi / Q000145:classification / Q000235:genetics* / Q000472:pathogenicity; D008097:Lithuania; D009664:Norway; D010802:Phylogeny; D028222:Picea / Q000382:microbiology*; D028223:Pinus / Q000382:microbiology*; D018515:Plant Leaves / Q000382:microbiology; D018520:Plant Shoots / Q000235:genetics / Q000382:microbiology; D016133:Polymerase Chain Reaction; D017422:Sequence Analysis, DNA; D014197:Trees / Q000382:microbiology*
chemical_list: D004271:DNA, Fungal; D004275:DNA, Ribosomal; D021903:DNA, Ribosomal Spacer
keywords: Climate change; Forest health; Fungal community; Pathogens; Pest insects