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Effects of tree species diversity on foliar fungal distribution

Nguyen, Diem (2015). Effects of tree species diversity on foliar fungal distribution. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae, 1652-6880 ; 2015:130
ISBN 978-91-576-8458-5
eISBN 978-91-576-8459-2
[Doctoral thesis]

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Abstract

European forest ecosystems span many different ecological zones and are rich in tree species. The environment in which the trees grow similarly affects fungal communities that interact with these trees. Fungal pathogens can cause severe damage to trees and potentially impair forest stability. In particular, pathogens that damage the foliage will affect the tree’s photosynthetic ability, partly or completely. At the same time, pathogens can create niches for different plants by removing dominant species. The foliage community also comprises fungal species whose ecological functions are not entirely known and may either positively or negatively impact the tree’s health status.

The aim of this thesis was to understand the effect of tree species diversity in mitigating fungal pathogen damage and in affecting the fungal community distribution. To achieve this, visual assessment of leaves for pathogen damages was carried out on 16 different tree species from six European forests. The fungal communities of Norway spruce needles from four European forests were studied by using next generation sequencing technology, and fungal communities of birch leaves by sequencing and morphological assessment. In this thesis, foliar fungal pathogen damages were positively correlated with tree species richness – latitude interaction, suggesting that tree species diversity may regulate pathogens but was dependent on the forest. Additionally, foliar fungal community composition was found to differ significantly in different forests, which may be attributable to local environmental effects or reflect the evolutionary history of the host tree, and thereby this study contributes to the understanding of biogeographic patterns of microorganisms. Finally, methods used to study fungal communities revealed that the sequencing-based method provided a richer picture of the fungal community than morphological assessment of fungal structures and symptoms, though neither method informed the distribution patterns as it relates to tree species diversity. Overall, impact of tree species diversity on foliar fungal distribution may not be strong, but it invites us to consider other factors that interact with fungal communities and how fungi may in turn shape their environment.

Authors/Creators:Nguyen, Diem
Title:Effects of tree species diversity on foliar fungal distribution
Series/Journal:Acta Universitatis agriculturae Sueciae (1652-6880)
Year of publishing :2015
Depositing date:19 November 2015
Volume:2015:130
Number of Pages:74
Papers/manuscripts:
NumberReferences
IBaeten, Lander; Verheyen, Kris; Wirth, Christian; Bruelheide, Helge; Bussotti, Filippo; Finer, Leena; Jaroszewicz, Bogdan; Selvi, Federico; Valladaresh, Fernando; Allan, Eric; Ampoorter, Evy; Auge, Harald; Avacariei, Daniel; Barbaro, Luc; Barnoaiea, Ionu; Bastias, Cristina C.; Bauhus, Jurgen; Beinhoff, Carsten; Benavides, Raquel; Benneter, Adam; Berger, Sigrid; Berthold, Felix; Boberg, Johanna; Bonal, Damien; Braggernann, Wolfgang; Carnol, Monique; Castagneyrol, Bastien; Charbonnier, Yohan; Checko, Ewa; Coomess, David; Coppi, Andrea; Dalmaris, Eleftheria; Danila, Gabriel; Dawud, Seid M.; de Vries, Wim; De Wandeler, Hans; Deconchat, Marc; Domisch, Timo; Duduman, Gabriel; Fischer, Markus; Fotelli, Mariangela; Gessler, Arthur; Gimeno, Teresa E.; Granier, Andre; Grossiord, Charlotte; Guyot, Virginie; Hantsch, Lydia; Haettenschwiler, Stephan; Hector, Andy; Hermy, Martin; Holland, Vera; Jactel, Herve; Joly, Francois-Xavier; Jucker, Tommaso; Kolb, Simon; Koricheva, Julia; Lexer, Manfred J.; Liebergesell, Mario; Milligan, Harriet; Mueller, Sandra; Muys, Bart; Nguyen, Diem; Nichiforel, Liviu; Pollastrini, Martina; Proulx, Raphael; Rabasa, Sonia; Radoglou, Kalliopi; Ratcliffe, Sophia; Raulund-Rasmussen, Karsten; Seiferling, Ian; Stenlid, Jan; Vesterdal, Lars; von Wilpert, Klaus; Zavala, Miguel A.; Zielinski, Dawid; Scherer-Lorenzen, Michael (2013). A novel comparative research platform designed to determine the functional significance of tree species diversity in European forests. Perspectives In Plant Ecology Evolution And Systematics 15(5), 281-291.
IINguyen, D., Castagneyrol, B., Bruelheide, H., Bussotti, F., Guyot, V., Jactel, H., Jaroszewicz, B., Valladares, F., Stenlid, J., Boberg, J. Tree diversity effects on fungal pathogens change across latitude in European forests (submitted).
IIINguyen, D., Boberg, J., Ihrmark, K., Stenström, E., Stenlid, J. Scaledependent distribution of fungal communities in Norway spruce needles in mature European forests (submitted).
IVNguyen, D., Boberg, J., Cleary, M., Hönig, L., Bruelheide, H., Stenlid, J. Foliar fungi of Birch in mixed tree species stands: comparing highthroughput sequencing and morphological assessment (manuscript).
Place of Publication:Uppsala
Publisher:Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences
ISBN for printed version:978-91-576-8458-5
ISBN for electronic version:978-91-576-8459-2
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:F Plant production > F40 Plant ecology
K Forestry > K01 Forestry - General aspects
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Other Biological Topics
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Forest Science
Agrovoc terms:picea abies, betula pendula, forest trees, leaves, fungi, pathogens, species, biodiversity, ecosystems, genetic structures, forest ecology
Keywords:Foliar fungal community, Tree species diversity, Next generation sequencing, Fungal pathogen, Picea abies, Betula pendula, FUNDIVEUROPE
URN:NBN:urn:nbn:se:slu:epsilon-e-3075
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-3075
ID Code:12831
Faculty:S - Faculty of Forest Sciences
Department:(NL, NJ) > Dept. of Forest Mycology and Plant Pathology
(S) > Dept. of Forest Mycology and Plant Pathology
External funders:EU FP7
Deposited By: Diem Nguyen
Deposited On:19 Nov 2015 10:48
Metadata Last Modified:02 Dec 2015 13:54
Project info:
Name:Functional significance of forest biodiversity in Europe
Acronym:FUNDIVEUROPE
ID:265171
Programme:FP7

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