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Jantzen JR, Laliberté E, Carteron A, Beauchamp-Rioux R, Blanchard F, Crofts AL, Girard A, Hacker PW, Pardo J, Schweiger AK, Demers-Thibeault S, Coops NC, Kalacska M, Vellend M, Bruneau A. Evolutionary history explains foliar spectral differences between arbuscular and ectomycorrhizal plant species. THE NEW PHYTOLOGIST 2023; 238:2651-2667. [PMID: 36960543 DOI: 10.1111/nph.18902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 03/16/2023] [Indexed: 05/19/2023]
Abstract
Leaf spectra are integrated foliar phenotypes that capture a range of traits and can provide insight into ecological processes. Leaf traits, and therefore leaf spectra, may reflect belowground processes such as mycorrhizal associations. However, evidence for the relationship between leaf traits and mycorrhizal association is mixed, and few studies account for shared evolutionary history. We conduct partial least squares discriminant analysis to assess the ability of spectra to predict mycorrhizal type. We model the evolution of leaf spectra for 92 vascular plant species and use phylogenetic comparative methods to assess differences in spectral properties between arbuscular mycorrhizal and ectomycorrhizal plant species. Partial least squares discriminant analysis classified spectra by mycorrhizal type with 90% (arbuscular) and 85% (ectomycorrhizal) accuracy. Univariate models of principal components identified multiple spectral optima corresponding with mycorrhizal type due to the close relationship between mycorrhizal type and phylogeny. Importantly, we found that spectra of arbuscular mycorrhizal and ectomycorrhizal species do not statistically differ from each other after accounting for phylogeny. While mycorrhizal type can be predicted from spectra, enabling the use of spectra to identify belowground traits using remote sensing, this is due to evolutionary history and not because of fundamental differences in leaf spectra due to mycorrhizal type.
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Affiliation(s)
- Johanna R Jantzen
- Département de Sciences Biologiques, Institut de Recherche en Biologie Végétale, Université de Montréal, 4101 Sherbrooke Est, Montréal, QC, H1X 2B2, Canada
| | - Etienne Laliberté
- Département de Sciences Biologiques, Institut de Recherche en Biologie Végétale, Université de Montréal, 4101 Sherbrooke Est, Montréal, QC, H1X 2B2, Canada
| | - Alexis Carteron
- Dipartimento di Scienze e Politiche Ambientali, Università degli Studi di Milano, Milano, Italy
| | - Rosalie Beauchamp-Rioux
- Département de Sciences Biologiques, Institut de Recherche en Biologie Végétale, Université de Montréal, 4101 Sherbrooke Est, Montréal, QC, H1X 2B2, Canada
| | - Florence Blanchard
- Département de Sciences Biologiques, Institut de Recherche en Biologie Végétale, Université de Montréal, 4101 Sherbrooke Est, Montréal, QC, H1X 2B2, Canada
| | - Anna L Crofts
- Département de Biologie, Université de Sherbrooke, Sherbrooke, QC, J1K 2X9, Canada
| | - Alizée Girard
- Département de Sciences Biologiques, Institut de Recherche en Biologie Végétale, Université de Montréal, 4101 Sherbrooke Est, Montréal, QC, H1X 2B2, Canada
| | - Paul W Hacker
- Department of Forest Resources Management, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
| | - Juliana Pardo
- Département de Sciences Biologiques, Institut de Recherche en Biologie Végétale, Université de Montréal, 4101 Sherbrooke Est, Montréal, QC, H1X 2B2, Canada
| | - Anna K Schweiger
- Département de Sciences Biologiques, Institut de Recherche en Biologie Végétale, Université de Montréal, 4101 Sherbrooke Est, Montréal, QC, H1X 2B2, Canada
- Department of Geography, Remote Sensing Laboratories, University of Zurich, Winterthurerstrasse 190, 8057, Zürich, Switzerland
| | - Sabrina Demers-Thibeault
- Département de Sciences Biologiques, Institut de Recherche en Biologie Végétale, Université de Montréal, 4101 Sherbrooke Est, Montréal, QC, H1X 2B2, Canada
| | - Nicholas C Coops
- Department of Forest Resources Management, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
| | - Margaret Kalacska
- Department of Geography, McGill University, Montréal, QC, H3A 0B9, Canada
| | - Mark Vellend
- Département de Biologie, Université de Sherbrooke, Sherbrooke, QC, J1K 2X9, Canada
| | - Anne Bruneau
- Département de Sciences Biologiques, Institut de Recherche en Biologie Végétale, Université de Montréal, 4101 Sherbrooke Est, Montréal, QC, H1X 2B2, Canada
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