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<identifier>oai:HAL:hal-01031901v1</identifier>
<datestamp>2018-01-11</datestamp>
<setSpec>type:ART</setSpec>
<setSpec>subject:sdv</setSpec>
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<setSpec>collection:UNIV-AG</setSpec>
<setSpec>collection:AGROPARISTECH</setSpec>
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<publisher>HAL CCSD</publisher>
<title lang=en>Do mycorrhizas improve tropical tree seedling performance under water stress and low light conditions ? A case study with dicorynia guianensis (Caesalpiniaceae)</title>
<creator>Bereau, Moïse</creator>
<creator>Bonal, Damien</creator>
<creator>Louisanna, Eliane</creator>
<creator>GARBAYE, Jean</creator>
<contributor>Ecologie des forêts de Guyane (ECOFOG) ; Ecole Nationale du Génie Rural, des Eaux et des Forêts (ENGREF) - Institut National de la Recherche Agronomique (INRA) - Université des Antilles et de la Guyane (UAG) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Interactions Arbres-Microorganismes (IAM) ; Institut National de la Recherche Agronomique (INRA) - Université de Lorraine (UL)</contributor>
<source>ISSN: 0266-4674</source>
<source>EISSN: 1469-7831</source>
<source>Journal of Tropical Ecology</source>
<publisher>Cambridge University Press (CUP)</publisher>
<identifier>hal-01031901</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01031901</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01031901</source>
<source>Journal of Tropical Ecology, Cambridge University Press (CUP), 2005, 21 (4), pp.375-381. 〈10.1017/S0266467405002348〉</source>
<identifier>DOI : 10.1017/S0266467405002348</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1017/S0266467405002348</relation>
<language>en</language>
<subject lang=en>LEAF GAS EXCHANGE</subject>
<subject lang=en>MYCORRHIZAL SYMBIOSIS</subject>
<subject lang=en>TROPICAL FOREST</subject>
<subject lang=en>WATER LIMITATION</subject>
<subject>[SDV.SA] Life Sciences [q-bio]/Agricultural sciences</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>We tested the response of seedlings of Dicorynia guianensis, a major timber tree species of French Guiana, to mycorrhizal symbiosis and water limitation in a semi-controlled experiment under natural light conditions. Under well-watered conditions, mycorrhizal colonization resulted in an increase of net photosynthesis, growth and phosphorus uptake. When submitted to water stress, no growth reduction of mycorrhizal seedlings was observed. Mycorrhizal seedlings were more sensitive to drought than non-mycorrhizal ones in terms of carbon assimilation, but not with regard to stomatal closure. In contrast to previous studies on temperate tree seedlings, this result precludes a mycorrhizal effect on the hydraulic properties of this species. Furthermore, our results suggest that below a specific threshold of soil moisture, carbon assimilation of D. guianensis seedlings was decreased by the mycorrhizal symbiosis. This is probably related to the competition between the plant and its host fungus for carbon allocation under low light intensity, even though it did not seem to have a significant effect on mortality in our experiment.</description>
<date>2005</date>
</dc>
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