Plant-mediated partner discrimination in ectomycorrhizal mutualisms

Laura Bogar, Kabir Peay, Ari Kornfeld, Julia Huggins, Sara Hortal, Ian Anderson, Peter G Kennedy

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Although ectomycorrhizal fungi have well-recognized effects on ecological processes ranging from plant community dynamics to carbon cycling rates, it is unclear if plants are able to actively influence the structure of these fungal communities. To address this knowledge gap, we performed two complementary experiments to determine (1) whether ectomycorrhizal plants can discriminate among potential fungal partners, and (2) to what extent the plants might reward better mutualists. In experiment 1, split-root Larix occidentalis seedlings were inoculated with spores from three Suillus species (S. clintonianus, S. grisellus, and S. spectabilis). In experiment 2, we manipulated the symbiotic quality of Suillus brevipes isolates on split-root Pinus muricata seedlings by changing the nitrogen resources available, and used carbon-13 labeling to track host investment in fungi. In experiment 1, we found that hosts can discriminate in multi-species settings. The split-root seedlings inhibited colonization by S. spectabilis whenever another fungus was available, despite similar benefits from all three fungi. In experiment 2, we found that roots and fungi with greater nitrogen supplies received more plant carbon. Our results suggest that plants may be able to regulate this symbiosis at a relatively fine scale, and that this regulation can be integrated across spatially separated portions of a root system.

Original languageEnglish (US)
Pages (from-to)97-111
Number of pages15
JournalMycorrhiza
Volume29
Issue number2
DOIs
StatePublished - Mar 1 2019

Fingerprint

fungus
Fungi
fungi
Suillus
Seedlings
seedling
Carbon
experiment
seedlings
carbon
Pinus muricata
Larix occidentalis
Nitrogen
Larix
Fungal Structures
nitrogen
fungal communities
community dynamics
Pinus
symbiosis

Keywords

  • Ectomycorrhiza
  • Larix occidentalis
  • Partner choice
  • Pinus muricata
  • Stable isotope enrichment
  • Suillus

PubMed: MeSH publication types

  • Journal Article

Cite this

Bogar, L., Peay, K., Kornfeld, A., Huggins, J., Hortal, S., Anderson, I., & Kennedy, P. G. (2019). Plant-mediated partner discrimination in ectomycorrhizal mutualisms. Mycorrhiza, 29(2), 97-111. https://doi.org/10.1007/s00572-018-00879-7

Plant-mediated partner discrimination in ectomycorrhizal mutualisms. / Bogar, Laura; Peay, Kabir; Kornfeld, Ari; Huggins, Julia; Hortal, Sara; Anderson, Ian; Kennedy, Peter G.

In: Mycorrhiza, Vol. 29, No. 2, 01.03.2019, p. 97-111.

Research output: Contribution to journalArticle

Bogar, L, Peay, K, Kornfeld, A, Huggins, J, Hortal, S, Anderson, I & Kennedy, PG 2019, 'Plant-mediated partner discrimination in ectomycorrhizal mutualisms', Mycorrhiza, vol. 29, no. 2, pp. 97-111. https://doi.org/10.1007/s00572-018-00879-7
Bogar L, Peay K, Kornfeld A, Huggins J, Hortal S, Anderson I et al. Plant-mediated partner discrimination in ectomycorrhizal mutualisms. Mycorrhiza. 2019 Mar 1;29(2):97-111. https://doi.org/10.1007/s00572-018-00879-7
Bogar, Laura ; Peay, Kabir ; Kornfeld, Ari ; Huggins, Julia ; Hortal, Sara ; Anderson, Ian ; Kennedy, Peter G. / Plant-mediated partner discrimination in ectomycorrhizal mutualisms. In: Mycorrhiza. 2019 ; Vol. 29, No. 2. pp. 97-111.
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