caa a22 4500 606219919 CHVBK 20210128101120.0 cr unu---uuuuu 210128e20150901xx s 000 0 eng 10.1007/s11104-015-2531-4 doi (NATIONALLICENCE)springer-10.1007/s11104-015-2531-4 Rhizodeposition of organic carbon by plants with contrasting traits for resource acquisition: responses to different fertility regimes [Elektronische Daten] [Florence Baptist, Iker Aranjuelo, Nicolas Legay, Luis Lopez-Sangil, Gemma Molero, Pere Rovira, Salvador Nogués] Background and aims: Rhizodeposition plays an important role in mediating soil nutrient availability in ecosystems. However, owing to methodological difficulties (i.e., narrow zone of soil around roots, rapid assimilation by soil microbes) fertility-induced changes in rhizodeposition remain mostly unknown. Methods: We developed a novel long-term continuous 13C labelling method to address the effects of two levels of nitrogen (N) fertilization on rhizodeposited carbon (C) by species with different nutrient acquisition strategies. Results: Fertility-induced changes in rhizodeposition were modulated by root responses to N availability rather than by changes in soil microbial biomass. Differences among species were mostly related to plant biomass: species with higher total leaf and root biomass also had higher total rhizodeposited C, whereas species with lower root biomass had higher specific rhizodeposited C (per gram root mass). Experimental controls demonstrated that most of the biases commonly associated with this type of experiment (i.e., long-term steady-state labelling) were avoided using our methodological approach. Conclusions: These results suggest that the amount of rhizodeposited C from plants grown under different levels of N were driven mainly by plant biomass and root morphology rather than microbial biomass. They also underline the importance of plant characteristics (i.e., biomass allocation) as opposed to traits associated with plant resource acquisition strategies in predicting total C rhizodeposition. Springer International Publishing Switzerland, 2015 Carbon nationallicence Exudation nationallicence Leaf traits nationallicence Root traits nationallicence Nitrogen nationallicence Plant nutrient use strategies nationallicence Baptist Florence Departament de Biologia Vegetal, Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, Spain aut Aranjuelo Iker Departament de Biologia Vegetal, Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, Spain aut Legay Nicolas Laboratoire d'Ecologie Alpine, UMR 5553 CNRS Université Joseph Fourier, BP 53, 38041, Grenoble Cedex 9, France aut Lopez-Sangil Luis Departament de Biologia Vegetal, Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, Spain aut Molero Gemma Departament de Biologia Vegetal, Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, Spain aut Rovira Pere Centre Tecnològic Forestal de Catalunya (CTFC), Carretera Sant Llorenç de Morunys, km 2, E-25280, Solsona, Spain aut Nogués Salvador Departament de Biologia Vegetal, Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, Spain aut Plant and Soil Springer International Publishing 394/1-2(2015-09-01), 391-406 0032-079X 394:1-2<391 2015 394 11104 https://doi.org/10.1007/s11104-015-2531-4 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11104-015-2531-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Baptist Florence Departament de Biologia Vegetal, Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, Spain aut NATIONALLICENCE 700 1- Aranjuelo Iker Departament de Biologia Vegetal, Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, Spain aut NATIONALLICENCE 700 1- Legay Nicolas Laboratoire d'Ecologie Alpine, UMR 5553 CNRS Université Joseph Fourier, BP 53, 38041, Grenoble Cedex 9, France aut NATIONALLICENCE 700 1- Lopez-Sangil Luis Departament de Biologia Vegetal, Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, Spain aut NATIONALLICENCE 700 1- Molero Gemma Departament de Biologia Vegetal, Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, Spain aut NATIONALLICENCE 700 1- Rovira Pere Centre Tecnològic Forestal de Catalunya (CTFC), Carretera Sant Llorenç de Morunys, km 2, E-25280, Solsona, Spain aut NATIONALLICENCE 700 1- Nogués Salvador Departament de Biologia Vegetal, Universitat de Barcelona, Av. Diagonal 643, E-08028, Barcelona, Spain aut NATIONALLICENCE 773 0- Plant and Soil Springer International Publishing 394/1-2(2015-09-01), 391-406 0032-079X 394:1-2<391 2015 394 11104