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Stoichiometric imbalances between soil microorganisms and their resources regulate litter decomposition

hal.structure.identifierChinese Academy of Sciences [Beijing] [CAS]
hal.structure.identifierUniversity of Chinese Academy of Sciences [Beijing] [UCAS]
dc.contributor.authorLI, Bing
hal.structure.identifierChinese Academy of Sciences [Beijing] [CAS]
dc.contributor.authorLI, Yingbin
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorFANIN, Nicolas
hal.structure.identifierNetherlands Institute of Ecology [NIOO-KNAW]
dc.contributor.authorVEEN, G.
hal.structure.identifierChinese Academy of Sciences [Beijing] [CAS]
dc.contributor.authorHAN, Xu
hal.structure.identifierChinese Academy of Sciences [Beijing] [CAS]
dc.contributor.authorDU, Xiaofang
hal.structure.identifierChinese Academy of Sciences [Beijing] [CAS]
hal.structure.identifierUniversity of Chinese Academy of Sciences [Beijing] [UCAS]
dc.contributor.authorLI, Yuhui
hal.structure.identifierChinese Academy of Sciences [Beijing] [CAS]
dc.contributor.authorSUN, Yixin
hal.structure.identifierChinese Academy of Sciences [Beijing] [CAS]
dc.contributor.authorLI, Qi
dc.date.accessioned2024-04-08T11:40:49Z
dc.date.available2024-04-08T11:40:49Z
dc.date.issued2024
dc.identifier.issn0269-8463
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/195054
dc.description.abstractEnLitter decomposition is dependent on the requirements of decomposer communities and their ability to acquire energy and nutrients from their substrates (i.e. litter) and the surrounding environment (i.e. soil). However, knowledge about whether and how stoichiometric imbalance (i.e. the differences in C:N:P ratios between microorganisms and their substrates) regulate litter decomposition rates and whether it can be compensated by soil resources have rarely been evaluated, and even less across different decomposition stages over time. In this study, we conducted a reciprocal litter transplantation experiment using a stoichiometric gradient along the forest‐steppe ecotone to evaluate mechanisms underlying litter‐microbe‐soil interactions at different moments during litter breakdown. We measured the C:N:P stoichiometry of litter, soil, microbes, enzyme ratios and soil microbial community composition (via metabarcoding) after 6 and 12 months of litter decomposition. We found that the stoichiometric imbalances between soil microorganisms and litter substrate controlled decomposition rates directly during the early phase of decomposition. In contrast, the stoichiometric imbalances between soil microorganisms and soil substrate regulated decomposition rates during the later phase of decomposition, but this was an indirect effect mediated via shifts in the saprophytic fungal community composition and enzyme allocation. These findings highlight that the stoichiometric imbalance between soil microorganisms and litter substrates can be partly compensated by the local soil resources over the course of the decomposition process. We conclude that the stoichiometric imbalance between soil microorganisms and their resources is a key mechanism that should not be ignored when predicting soil C and nutrient cycling in terrestrial ecosystems. Read the free Plain Language Summary for this article on the Journal blog.
dc.language.isoen
dc.publisherWiley
dc.subject.endecomposer community
dc.subject.enforest-steppe ecotone
dc.subject.enlitter decomposition stage
dc.subject.enlitter-microbe-soil interactions
dc.subject.enmicrobial community composition
dc.subject.enstoichiometric imbalance
dc.title.enStoichiometric imbalances between soil microorganisms and their resources regulate litter decomposition
dc.typeArticle de revue
dc.identifier.doi10.1111/1365-2435.14459
dc.subject.halSciences de l'environnement
bordeaux.journalFunctional Ecology
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-04286738
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04286738v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Functional%20Ecology&rft.date=2024&rft.eissn=0269-8463&rft.issn=0269-8463&rft.au=LI,%20Bing&LI,%20Yingbin&FANIN,%20Nicolas&VEEN,%20G.&HAN,%20Xu&rft.genre=article


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