A worldview of root traits: the influence of ancestry, growth form, climate and mycorrhizal association on the functional trait variation of fine-root tissues in seed plants.
Identifieur interne : 000C96 ( Main/Corpus ); précédent : 000C95; suivant : 000C97A worldview of root traits: the influence of ancestry, growth form, climate and mycorrhizal association on the functional trait variation of fine-root tissues in seed plants.
Auteurs : Oscar J. Valverde-Barrantes ; Grégoire T. Freschet ; Catherine Roumet ; Christopher B. BlackwoodSource :
- The New phytologist [ 1469-8137 ] ; 2017.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Nitrogen.
- microbiology : Plants.
- physiology : Mycorrhizae, Plant Leaves.
- Phylogeny, Plant Development, Quantitative Trait, Heritable.
Abstract
Fine-root traits play key roles in ecosystem processes, but the drivers of fine-root trait diversity remain poorly understood. The plant economic spectrum (PES) hypothesis predicts that leaf and root traits evolved in coordination. Mycorrhizal association type, plant growth form and climate may also affect root traits. However, the extent to which these controls are confounded with phylogenetic structuring remains unclear. Here we compiled information about root and leaf traits for > 600 species. Using phylogenetic relatedness, climatic ranges, growth form and mycorrhizal associations, we quantified the importance of these factors in the global distribution of fine-root traits. Phylogenetic structuring accounts for most of the variation for all traits excepting root tissue density, with root diameter and nitrogen concentration showing the strongest phylogenetic signal and specific root length showing intermediate values. Climate was the second most important factor, whereas mycorrhizal type had little effect. Substantial trait coordination occurred between leaves and roots, but the strength varied between growth forms and clades. Our analyses provide evidence that the integration of roots and leaves in the PES requires better accounting of the variation in traits across phylogenetic clades. Inclusion of phylogenetic information provides a powerful framework for predictions of belowground functional traits at global scales.
DOI: 10.1111/nph.14571
PubMed: 28440574
Links to Exploration step
pubmed:28440574Le document en format XML
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<author><name sortKey="Valverde Barrantes, Oscar J" sort="Valverde Barrantes, Oscar J" uniqKey="Valverde Barrantes O" first="Oscar J" last="Valverde-Barrantes">Oscar J. Valverde-Barrantes</name>
<affiliation><nlm:affiliation>International Center of Tropical Botany, Florida International University, Miami, FL, 33199, USA.</nlm:affiliation>
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<affiliation><nlm:affiliation>Department of Biological Sciences, Kent State University, Kent, OH, 44242, USA.</nlm:affiliation>
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<author><name sortKey="Freschet, Gregoire T" sort="Freschet, Gregoire T" uniqKey="Freschet G" first="Grégoire T" last="Freschet">Grégoire T. Freschet</name>
<affiliation><nlm:affiliation>Centre d'Ecologie Fonctionnelle et Evolutive, UMR 5175 (CNRS - Université de Montpellier - Université Paul-Valéry Montpellier - EPHE), Montpellier, 34293, France.</nlm:affiliation>
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<author><name sortKey="Roumet, Catherine" sort="Roumet, Catherine" uniqKey="Roumet C" first="Catherine" last="Roumet">Catherine Roumet</name>
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<author><name sortKey="Blackwood, Christopher B" sort="Blackwood, Christopher B" uniqKey="Blackwood C" first="Christopher B" last="Blackwood">Christopher B. Blackwood</name>
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<author><name sortKey="Valverde Barrantes, Oscar J" sort="Valverde Barrantes, Oscar J" uniqKey="Valverde Barrantes O" first="Oscar J" last="Valverde-Barrantes">Oscar J. Valverde-Barrantes</name>
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<term>Phylogeny (MeSH)</term>
<term>Plant Development (MeSH)</term>
<term>Plant Leaves (physiology)</term>
<term>Plants (microbiology)</term>
<term>Quantitative Trait, Heritable (MeSH)</term>
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<front><div type="abstract" xml:lang="en">Fine-root traits play key roles in ecosystem processes, but the drivers of fine-root trait diversity remain poorly understood. The plant economic spectrum (PES) hypothesis predicts that leaf and root traits evolved in coordination. Mycorrhizal association type, plant growth form and climate may also affect root traits. However, the extent to which these controls are confounded with phylogenetic structuring remains unclear. Here we compiled information about root and leaf traits for > 600 species. Using phylogenetic relatedness, climatic ranges, growth form and mycorrhizal associations, we quantified the importance of these factors in the global distribution of fine-root traits. Phylogenetic structuring accounts for most of the variation for all traits excepting root tissue density, with root diameter and nitrogen concentration showing the strongest phylogenetic signal and specific root length showing intermediate values. Climate was the second most important factor, whereas mycorrhizal type had little effect. Substantial trait coordination occurred between leaves and roots, but the strength varied between growth forms and clades. Our analyses provide evidence that the integration of roots and leaves in the PES requires better accounting of the variation in traits across phylogenetic clades. Inclusion of phylogenetic information provides a powerful framework for predictions of belowground functional traits at global scales.</div>
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<ArticleTitle>A worldview of root traits: the influence of ancestry, growth form, climate and mycorrhizal association on the functional trait variation of fine-root tissues in seed plants.</ArticleTitle>
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<Abstract><AbstractText>Fine-root traits play key roles in ecosystem processes, but the drivers of fine-root trait diversity remain poorly understood. The plant economic spectrum (PES) hypothesis predicts that leaf and root traits evolved in coordination. Mycorrhizal association type, plant growth form and climate may also affect root traits. However, the extent to which these controls are confounded with phylogenetic structuring remains unclear. Here we compiled information about root and leaf traits for > 600 species. Using phylogenetic relatedness, climatic ranges, growth form and mycorrhizal associations, we quantified the importance of these factors in the global distribution of fine-root traits. Phylogenetic structuring accounts for most of the variation for all traits excepting root tissue density, with root diameter and nitrogen concentration showing the strongest phylogenetic signal and specific root length showing intermediate values. Climate was the second most important factor, whereas mycorrhizal type had little effect. Substantial trait coordination occurred between leaves and roots, but the strength varied between growth forms and clades. Our analyses provide evidence that the integration of roots and leaves in the PES requires better accounting of the variation in traits across phylogenetic clades. Inclusion of phylogenetic information provides a powerful framework for predictions of belowground functional traits at global scales.</AbstractText>
<CopyrightInformation>© 2017 The Authors. New Phytologist © 2017 New Phytologist Trust.</CopyrightInformation>
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<AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Valverde-Barrantes</LastName>
<ForeName>Oscar J</ForeName>
<Initials>OJ</Initials>
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<Keyword MajorTopicYN="N">plant evolution</Keyword>
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