Green plants that feed on fungi: facts and questions about mixotrophy.
Identifieur interne : 002A73 ( Main/Corpus ); précédent : 002A72; suivant : 002A74Green plants that feed on fungi: facts and questions about mixotrophy.
Auteurs : Marc-André Selosse ; Mélanie RoySource :
- Trends in plant science [ 1360-1385 ] ; 2009.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Carbon.
- genetics : Orchidaceae.
- physiology : Ericaceae, Mycorrhizae, Orchidaceae.
- Biological Evolution, Photosynthesis, Symbiosis.
Abstract
Several green, photosynthetic plants in orchids and Ericaceae were recently found to recover carbon from the mycorrhizal fungi associated with their roots, a dual nutritional capability called mixotrophy. The physiological and cellular processes allowing carbon gain from the fungus are not well understood. We believe that this phenomenon is overlooked and propose several land plant families and ecosystems that should be investigated for possible mixotrophy. We speculate that mixotrophy allowed, in some lineages, the evolution of heterotrophic plants, that is, non-photosynthetic plants that obtain their carbon from organic compounds. Moreover, the amount of carbon gained from the fungus varies from one site to another in mixotrophs. Drawing a parallel with mixotrophy in planktonic algae, we propose some hypotheses that could account for this.
DOI: 10.1016/j.tplants.2008.11.004
PubMed: 19162524
Links to Exploration step
pubmed:19162524Le document en format XML
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<affiliation><nlm:affiliation>Centre d'Ecologie Fonctionnelle et Evolutive (CNRS, UMR 5175), Equipe Interactions Biotiques, 1919 Route de Mende, 34293 Montpellier cédex 5, France. ma.selosse@wanadoo.fr</nlm:affiliation>
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<author><name sortKey="Selosse, Marc Andre" sort="Selosse, Marc Andre" uniqKey="Selosse M" first="Marc-André" last="Selosse">Marc-André Selosse</name>
<affiliation><nlm:affiliation>Centre d'Ecologie Fonctionnelle et Evolutive (CNRS, UMR 5175), Equipe Interactions Biotiques, 1919 Route de Mende, 34293 Montpellier cédex 5, France. ma.selosse@wanadoo.fr</nlm:affiliation>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Biological Evolution (MeSH)</term>
<term>Carbon (metabolism)</term>
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<term>Orchidaceae (genetics)</term>
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<keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Orchidaceae</term>
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<keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Ericaceae</term>
<term>Mycorrhizae</term>
<term>Orchidaceae</term>
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<front><div type="abstract" xml:lang="en">Several green, photosynthetic plants in orchids and Ericaceae were recently found to recover carbon from the mycorrhizal fungi associated with their roots, a dual nutritional capability called mixotrophy. The physiological and cellular processes allowing carbon gain from the fungus are not well understood. We believe that this phenomenon is overlooked and propose several land plant families and ecosystems that should be investigated for possible mixotrophy. We speculate that mixotrophy allowed, in some lineages, the evolution of heterotrophic plants, that is, non-photosynthetic plants that obtain their carbon from organic compounds. Moreover, the amount of carbon gained from the fungus varies from one site to another in mixotrophs. Drawing a parallel with mixotrophy in planktonic algae, we propose some hypotheses that could account for this.</div>
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<Abstract><AbstractText>Several green, photosynthetic plants in orchids and Ericaceae were recently found to recover carbon from the mycorrhizal fungi associated with their roots, a dual nutritional capability called mixotrophy. The physiological and cellular processes allowing carbon gain from the fungus are not well understood. We believe that this phenomenon is overlooked and propose several land plant families and ecosystems that should be investigated for possible mixotrophy. We speculate that mixotrophy allowed, in some lineages, the evolution of heterotrophic plants, that is, non-photosynthetic plants that obtain their carbon from organic compounds. Moreover, the amount of carbon gained from the fungus varies from one site to another in mixotrophs. Drawing a parallel with mixotrophy in planktonic algae, we propose some hypotheses that could account for this.</AbstractText>
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