{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T20:59:39Z","timestamp":1790801979597,"version":"4.1.0"},"reference-count":82,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2017,8,21]],"date-time":"2017-08-21T00:00:00Z","timestamp":1503273600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2017,8,21]],"date-time":"2017-08-21T00:00:00Z","timestamp":1503273600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Sci Rep"],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Maize inoculation by\n                    <jats:italic>Azospirillum<\/jats:italic>\n                    stimulates root growth, along with soil nitrogen (N) uptake and root carbon (C) exudation, thus increasing N use efficiency. However, inoculation effects on soil N-cycling microbial communities have been overlooked. We hypothesized that inoculation would (i) increase roots-nitrifiers competition for ammonium, and thus decrease nitrifier abundance; and (ii) increase roots-denitrifiers competition for nitrate and C supply to denitrifiers by root exudation, and thus limit or benefit denitrifiers depending on the resource (N or C) mostly limiting these microorganisms. We quantified (de)nitrifiers abundance and activity in the rhizosphere of inoculated and non-inoculated maize on 4 sites over 2 years, and ancillary soil variables. Inoculation effects on nitrification and nitrifiers (AOA, AOB) were not consistent between the three sampling dates. Inoculation influenced denitrifiers abundance (\n                    <jats:italic>nirK<\/jats:italic>\n                    ,\n                    <jats:italic>nirS)<\/jats:italic>\n                    differently among sites. In sites with high C limitation for denitrifiers (i.e. limitation of denitrification by C\u2009&gt;\u200966%), inoculation increased\n                    <jats:italic>nirS<\/jats:italic>\n                    -denitrifier abundance (up to 56%) and gross N\n                    <jats:sub>2<\/jats:sub>\n                    O production (up to 84%), likely due to increased root C exudation. Conversely, in sites with low C limitation (&lt;47%), inoculation decreased\n                    <jats:italic>nirS<\/jats:italic>\n                    -denitrifier abundance (down to \u221223%) and gross N\n                    <jats:sub>2<\/jats:sub>\n                    O production (down to \u221218%) likely due to an increased roots-denitrifiers competition for nitrate.\n                  <\/jats:p>","DOI":"10.1038\/s41598-017-08589-4","type":"journal-article","created":{"date-parts":[[2017,8,10]],"date-time":"2017-08-10T07:51:52Z","timestamp":1502351512000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":48,"title":["Soil C and N statuses determine the effect of maize inoculation by plant growth-promoting rhizobacteria on nitrifying and denitrifying communities"],"prefix":"10.1038","volume":"7","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6814-8675","authenticated-orcid":false,"given":"Alessandro","family":"Florio","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas","family":"Pommier","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jonathan","family":"Gervaix","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Annette","family":"B\u00e9rard","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xavier","family":"Le Roux","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2017,8,21]]},"reference":[{"key":"8589_CR1","doi-asserted-by":"publisher","first-page":"789","DOI":"10.1038\/nrmicro3109","volume":"11","author":"L Philippot","year":"2013","unstructured":"Philippot, L., Raaijmakers, J. 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