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dc.contributor.authorMedina-Sauza, Regina M
dc.contributor.authorAlvarez-Jimenez, Marycruz
dc.contributor.authorDelhal, Alix
dc.contributor.authorReverchon, Frederique
dc.contributor.authorBlouin, Manuel
dc.contributor.authorGuerrero-Analco, Jose A
dc.contributor.authorCerdan, Carlos R
dc.contributor.authorGuevara, Roger
dc.contributor.authorVillain, Luc
dc.contributor.authorBarois, Isabelle
dc.date.accessioned2020-01-13T23:09:36Z
dc.date.available2020-01-13T23:09:36Z
dc.date.issued2019
dc.identifier.issn2296-665X
dc.identifier.doi10.3389/fenvs.2019.00081
dc.identifier.urihttp://hdl.handle.net/10072/390182
dc.description.abstractThe positive effect of earthworms on soil processes and plant growth has been extensively documented. The capacity of earthworms to decompose organic matter has been attributed to the microbial communities that inhabit their digestive track or the structures they build, which in turn contribute to make up the drilosphere, a hotspot for microbial activity. However, how earthworms modify the structure of soil microbial communities and how these changes affect soil microbial processes is still unclear. Do earthworms reduce microbial abundance and activity because they feed on microorganisms or do they select and stimulate specific microbial groups? We hypothesise that “the effect of earthworms on nutrient cycling and plant growth is not only a direct effect but is mainly mediated indirectly, via modifications of the microbial community.” The objective of this review is to synthesize the existing literature concerning the influence of earthworms on the structure and function of soil microbial communities, as well as to understand how earthworm-induced changes in the soil microbiota would in turn impact soil processes, particularly those occurring in the rhizosphere and involved in plant growth and health. Recent reports have shown that specific bacterial groups consistently increase in soils where earthworms are present, regardless of the earthworm functional group. The extent of this increase seems to be dependent upon the type of substrate under study. Our synthesis also reveals that endogeic and anecic earthworms regularly induce an increase in soil nutrients, whilst this positive effect is not as evident in the presence of epigeic earthworms. The effect of earthworms on nutrient cycling has been further investigated with microbial functional genes, although existing reports largely focus on nitrogen cycling. Earthworms seem to enhance denitrification, most likely through the increase in organic compounds due to organic matter decomposition. By enhancing soil nutrient availability, earthworms indirectly promote plant growth, which has also been attributed to the induction of signal molecules. However, no experiment to date has been able to prove a direct causal relationship between specific signal molecules, earthworms and plant growth promotion. Finally, we propose a framework for earthworm-microbiota interactions and recommend further research.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherFrontiers Media
dc.relation.ispartofjournalFrontiers in Environmental Science
dc.relation.ispartofvolume7
dc.subject.fieldofresearchEnvironmental Science and Management
dc.subject.fieldofresearchcode0502
dc.subject.keywordsScience & Technology
dc.subject.keywordsLife Sciences & Biomedicine
dc.subject.keywordsEnvironmental Sciences
dc.subject.keywordsEnvironmental Sciences & Ecology
dc.subject.keywordssoil nutrient hotspots
dc.titleEarthworms Building Up Soil Microbiota, a Review
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationMedina-Sauza, RM; Alvarez-Jimenez, M; Delhal, A; Reverchon, F; Blouin, M; Guerrero-Analco, JA; Cerdan, CR; Guevara, R; Villain, L; Barois, I, Earthworms Building Up Soil Microbiota, a Review, Frontiers in Environmental Science, 2019, 7
dcterms.licensehttp://creativecommons.org/licenses/by/4.0/
dc.date.updated2020-01-13T23:06:38Z
dc.description.versionVersion of Record (VoR)
gro.rights.copyright© 2019 Medina-Sauza, Álvarez-Jiménez, Delhal, Reverchon, Blouin, Guerrero-Analco, Cerdán, Guevara, Villain and Barois. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
gro.hasfulltextFull Text
gro.griffith.authorReverchon, Frederique


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