Genotypic traits and tradeoffs of fast growth in silver birch, a pioneer tree

Show simple item record Mikola, Juha Koikkalainen, Katariina Rasehorn, Mira Silfver, Tarja Paaso, Ulla Rousi, Matti 2021-08-31T06:01:01Z 2021-08-31T06:01:01Z 2021-08
dc.identifier.citation Mikola , J , Koikkalainen , K , Rasehorn , M , Silfver , T , Paaso , U & Rousi , M 2021 , ' Genotypic traits and tradeoffs of fast growth in silver birch, a pioneer tree ' , Oecologia , vol. 196 , pp. 1049-1060 .
dc.identifier.other PURE: 167652162
dc.identifier.other PURE UUID: 9a9c1f3b-143d-4285-b8d1-31343209bb7e
dc.identifier.other WOS: 000678410900002
dc.identifier.other ORCID: /0000-0002-4336-2648/work/99269023
dc.identifier.other ORCID: /0000-0003-0619-5008/work/99273493
dc.description.abstract Fast-growing and slow-growing plant species are suggested to show integrated economics spectrums and the tradeoffs of fast growth are predicted to emerge as susceptibility to herbivory and resource competition. We tested if these predictions also hold for fast-growing and slow-growing genotypes within a silver birch, Betula pendula population. We exposed cloned saplings of 17 genotypes with slow, medium or fast height growth to reduced insect herbivory, using an insecticide, and to increasing resource competition, using naturally varying field plot grass cover. We measured shoot and root growth, ectomycorrhizal (EM) fungal production using ergosterol analysis and soil N transfer to leaves using N-15-labelled pulse of NH4+. We found that fast-growing genotypes grew on average 78% faster, produced 56% and 16% more leaf mass and ergosterol, and showed 78% higher leaf N uptake than slow-growing genotypes. The insecticide decreased leaf damage by 83% and increased shoot growth, leaf growth and leaf N uptake by 38%, 52% and 76%, without differences between the responses of fast-growing and slow-growing genotypes, whereas root mass decreased with increasing grass cover. Shoot and leaf growth of fast-growing genotypes decreased and EM fungal production of slow-growing genotypes increased with increasing grass cover. Our results suggest that fast growth is genotypically associated with higher allocation to EM fungi, better soil N capture and greater leaf production, and that the tradeoff of fast growth is sensitivity to competition, but not to insect herbivory. EM fungi may have a dual role: to support growth of fast-growing genotypes under low grass competition and to maintain growth of slow-growing genotypes under intensifying competition. en
dc.format.extent 12
dc.language.iso eng
dc.relation.ispartof Oecologia
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject Allocation cost
dc.subject Betula
dc.subject EM fungi
dc.subject Herbivory
dc.subject Resource competition
dc.subject ROOT TRAITS
dc.subject LIFE-HISTORY
dc.subject LONG-TERM
dc.subject LEAF
dc.subject HERBIVORE
dc.subject 1181 Ecology, evolutionary biology
dc.subject 11831 Plant biology
dc.title Genotypic traits and tradeoffs of fast growth in silver birch, a pioneer tree en
dc.type Article
dc.contributor.organization Ecosystems and Environment Research Programme
dc.description.reviewstatus Peer reviewed
dc.relation.issn 0029-8549
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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