1. Effect of plant diversity on the diversity of soil organic compounds
- Author
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El Moujahid, Lamiae, Le Roux, Xavier, MICHALET, Serge, BELLVERT, Floriant, Weigelt, Alexandra, Poly, Franck, Laboratoire d'Ecologie Microbienne - UMR 5557 (LEM), Institut National de la Recherche Agronomique (INRA)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Ecole Nationale Vétérinaire de Lyon (ENVL), Department Systematic Botanic and Functional Biodiversity, Institute Biology, Universität Leipzig [Leipzig], Agence Nationale de la Recherche ANR ANR-05-BDIV-010-01, Ecology Department of the National Research Institute for Agronomy Research (INRA EFPA), Ecology Institute of CNRS (CNRS INEE), Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Vétérinaire de Lyon (ENVL)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de la Recherche Agronomique (INRA)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS), Ecologie microbienne ( EM ), Centre National de la Recherche Scientifique ( CNRS ) -Ecole Nationale Vétérinaire de Lyon ( ENVL ) -Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Institut National de la Recherche Agronomique ( INRA ) -VetAgro Sup ( VAS ), and University of Leipzig
- Subjects
Botanics ,sol ,Ecological Metrics ,[ SDV.BV.BOT ] Life Sciences [q-bio]/Vegetal Biology/Botanics ,Soil Science ,lcsh:Medicine ,composé phénolique ,composé organique ,soil ,biodiversité ,Phenols ,Germany ,Medicinal Plants ,Organic Chemicals ,lcsh:Science ,Ecosystem ,phenolic compound ,communauté microbienne ,Ecology ,Ecology and Environmental Sciences ,Edaphology ,Organic Chemistry ,lcsh:R ,fungi ,Organisms ,Chemical Compounds ,Biology and Life Sciences ,food and beverages ,Species Diversity ,Biodiversity ,Plants ,[SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics ,diversité végétale ,Grassland ,Botanique ,Chemistry ,Organic Acids ,Physical Sciences ,lcsh:Q ,microbial community ,Acids ,human activities ,organic compounds ,rhizosphère ,Research Article - Abstract
The effect of plant diversity on aboveground organisms and processes was largely studied but there is still a lack of knowledge regarding the link between plant diversity and soil characteristics. Here, we analyzed the effect of plant identity and diversity on the diversity of extractible soil organic compounds (ESOC) using 87 experimental grassland plots with different levels of plant diversity and based on a pool of over 50 plant species. Two pools of low molecular weight organic compounds, LMW1 and LMW2, were characterized by GC-MS and HPLC-DAD, respectively. These pools include specific organic acids, fatty acids and phenolics, with more organic acids in LMW1 and more phenolics in LMW2. Plant effect on the diversity of LMW1 and LMW2 compounds was strong and weak, respectively. LMW1 richness observed for bare soil was lower than that observed for all planted soils; and the richness of these soil compounds increased twofold when dominant plant species richness increased from 1 to 6. Comparing the richness of LMW1 compounds observed for a range of plant mixtures and for plant monocultures of species present in these mixtures, we showed that plant species richness increases the richness of these ESOC mainly through complementarity effects among plant species associated with contrasted spectra of soil compounds. This could explain previously reported effects of plant diversity on the diversity of soil heterotrophic microorganisms.
- Published
- 2017
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