Different “metabolomic niches” of the highly diverse tree species of the French Guiana rainforests

Type Article
Date 2020-04
Language English
Author(s) Gargallo-Garriga Albert1, 2, 3, Sardans Jordi1, 2, Granda Victor1, 2, Llusià Joan2, 3, Peguero Guille1, 2, 4, Asensio Dolores2, 3, Ogaya Romà2, 3, Urbina Ifigenia2, 3, Van Langenhove Leandro4, Verryckt Lore T.4, Chave Jérome5, Courtois Elodie A.4, 5, Stahl Clément6, Grau Oriol1, 2, Klem Karel3, Urban Otmar3, Janssens Ivan A.4, Peñuelas Josep1, 2
Affiliation(s) 1 : CSIC, Global Ecology Unit CREAF-CEBAB-CSIC-UAB, Bellaterra, 08193, Catalonia, Spain
2 : CREAF, Cerdanyola del vallès, 08193, Catalonia, Spain
3 : Global Change Research Institute, Czech Academy of Sciences, Bělidla 986/4a, CZ-60300, Brno, Czech Republic
4 : University of Antwerp, Department of Biology, BE-2610, Wilrijk, Belgium
5 : Laboratoire Ecologie, évolution, interactions des systèmes amazoniens (LEEISA), Université de Guyane, CNRS, IFREMER, 97300, Cayenne, French Guiana
6 : INRA, UMR EcoFoG, CNRS, Cirad, AgroParisTech, Université des Antilles, Université de Guyane, 97310, Kourou, France
Source Scientific Reports (2045-2322) (Springer Science and Business Media LLC), 2020-04 , Vol. 10 , N. 1 , P. 6937 (10p.)
DOI 10.1038/s41598-020-63891-y
WOS© Times Cited 3
Abstract

Tropical rainforests harbor a particularly high plant diversity. We hypothesize that potential causes underlying this high diversity should be linked to distinct overall functionality (defense and growth allocation, anti-stress mechanisms, reproduction) among the different sympatric taxa. In this study we tested the hypothesis of the existence of a metabolomic niche related to a species-specific differential use and allocation of metabolites. We tested this hypothesis by comparing leaf metabolomic profiles of 54 species in two rainforests of French Guiana. Species identity explained most of the variation in the metabolome, with a species-specific metabolomic profile across dry and wet seasons. In addition to this “homeostatic” species-specific metabolomic profile significantly linked to phylogenetic distances, also part of the variance (flexibility) of the metabolomic profile was explained by season within a single species. Our results support the hypothesis of the high diversity in tropical forest being related to a species-specific metabolomic niche and highlight ecometabolomics as a tool to identify this species functional diversity related and consistent with the ecological niche theory

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Gargallo-Garriga Albert, Sardans Jordi, Granda Victor, Llusià Joan, Peguero Guille, Asensio Dolores, Ogaya Romà, Urbina Ifigenia, Van Langenhove Leandro, Verryckt Lore T., Chave Jérome, Courtois Elodie A., Stahl Clément, Grau Oriol, Klem Karel, Urban Otmar, Janssens Ivan A., Peñuelas Josep (2020). Different “metabolomic niches” of the highly diverse tree species of the French Guiana rainforests. Scientific Reports, 10(1), 6937 (10p.). Publisher's official version : https://doi.org/10.1038/s41598-020-63891-y , Open Access version : https://archimer.ifremer.fr/doc/00625/73686/