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<title lang=en>Mutualistic ants contribute to tank-bromeliad nutrition.</title>
<creator>Leroy, Céline</creator>
<creator>Carrias, Jean-François</creator>
<creator>Corbara, Bruno</creator>
<creator>Pélozuelo, Laurent</creator>
<creator>Dézerald, Olivier</creator>
<creator>Brouard, Olivier</creator>
<creator>Dejean, Alain</creator>
<creator>Céréghino, Régis</creator>
<contributor>Botanique et Modélisation de l'Architecture des Plantes et des Végétations (UMR AMAP) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD) - Institut national de la recherche agronomique [Montpellier] (INRA Montpellier) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS) - Institut de Recherche pour le Développement (IRD [France-Sud])</contributor>
<contributor>Laboratoire Microorganismes : Génome et Environnement (LMGE) ; Université Blaise Pascal - Clermont-Ferrand 2 (UBP) - Université d'Auvergne - Clermont-Ferrand I (UdA) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Laboratoire Ecologie Fonctionnelle et Environnement - ECOLAB (ECOLAB) ; Institut National Polytechnique [Toulouse] (INP) - Université Paul Sabatier - Toulouse 3 (UPS) - Observatoire Midi-Pyrénées (OMP) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Ecologie des forêts de Guyane (ECOFOG) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (CIRAD) - Institut National de la Recherche Agronomique (INRA) - Université des Antilles et de la Guyane (UAG) - AgroParisTech - Centre National de la Recherche Scientifique (CNRS)</contributor>
<description>International audience</description>
<source>ISSN: 0305-7364</source>
<source>EISSN: 1095-8290</source>
<source>Annals of Botany</source>
<publisher>Oxford University Press (OUP)</publisher>
<identifier>hal-00849045</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00849045</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00849045</source>
<source>Annals of Botany, Oxford University Press (OUP), 2013, epub ahead of print. 〈10.1093/aob/mct147〉</source>
<identifier>DOI : 10.1093/aob/mct147</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1093/aob/mct147</relation>
<identifier>PUBMED : 23864002</identifier>
<relation>info:eu-repo/semantics/altIdentifier/pmid/23864002</relation>
<language>en</language>
<subject lang=en>tank bromeliad</subject>
<subject lang=en>Algae</subject>
<subject lang=en>ants</subject>
<subject lang=en>Bromeliaceae</subject>
<subject lang=en>d15N</subject>
<subject lang=en>food webs</subject>
<subject lang=en>French Guiana</subject>
<subject lang=en>Formicinae</subject>
<subject lang=en>mutualistic interactions</subject>
<subject lang=en>nitrogen</subject>
<subject lang=en>phytotelmata</subject>
<subject lang=en>stable isotopes</subject>
<subject lang=en>tank bromeliad.</subject>
<subject>[SDV.EE.IEO] Life Sciences [q-bio]/Ecology, environment/Symbiosis</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Background and AimsEpiphytism imposes physiological constraints resulting from the lack of access to the nutrient sources available to ground-rooted plants. A conspicuous adaptation in response to that lack is the phytotelm (plant-held waters) of tank-bromeliad species that are often nutrient-rich. Associations with terrestrial invertebrates also result in higher plant nutrient acquisition. Assuming that tank-bromeliads rely on reservoir-assisted nutrition, it was hypothesized that the dual association with mutualistic ants and the phytotelm food web provides greater nutritional benefits to the plant compared with those bromeliads involved in only one of these two associations.MethodsQuantitative (water volume, amount of fine particulate organic matter, predator/prey ratio, algal density) and qualitative variables (ant-association and photosynthetic pathways) were compared for eight tank- and one tankless-bromeliad morphospecies from French Guiana. An analysis was also made of which of these variables affect nitrogen acquisition (leaf N and δ(15)N).Key ResultsAll variables were significantly different between tank-bromeliad species. Leaf N concentrations and leaf δ(15)N were both positively correlated with the presence of mutualistic ants. The amount of fine particulate organic matter and predator/prey ratio had a positive and negative effect on leaf δ(15)N, respectively. Water volume was positively correlated with leaf N concentration whereas algal density was negatively correlated. Finally, the photosynthetic pathway (C3 vs. CAM) was positively correlated with leaf N concentration with a slightly higher N concentration for C3-Tillandsioideae compared with CAM-Bromelioideae.ConclusionsThe study suggests that some of the differences in N nutrition between bromeliad species can be explained by the presence of mutualistic ants. From a nutritional standpoint, it is more advantageous for a bromeliad to use myrmecotrophy via its roots than to use carnivory via its tank. The results highlight a gap in our knowledge of the reciprocal interactions between bromeliads and the various trophic levels (from bacteria to large metazoan predators) that intervene in reservoir-assisted nutrition.</description>
<date>2013-07-16</date>
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