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The interaction of soil phototrophs and fungi with pH and their impact on soil CO 2 , CO 18 O and OCS exchange

hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorSAUZE, Joana
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorOGÉE, Jérôme
hal.structure.identifierAgroécologie [Dijon]
dc.contributor.authorMARON, Pierre-Alain
hal.structure.identifierEcologie fonctionnelle et écotoxicologie des agroécosystèmes [ECOSYS]
hal.structure.identifierUniversité Paris-Saclay
dc.contributor.authorCROUZET, Olivier
hal.structure.identifierAgroécologie [Dijon]
dc.contributor.authorNOWAK, Virginie
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorWOHL, Steven
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorKAISERMANN, Aurore
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorJONES, Samuel
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorWINGATE, Lisa
dc.date.accessioned2024-04-08T12:04:23Z
dc.date.available2024-04-08T12:04:23Z
dc.date.issued2017
dc.identifier.issn0038-0717
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196308
dc.description.abstractEnThe stable oxygen isotope composition of atmospheric CO2 and the mixing ratio of carbonyl sulphide (OCS) are potential tracers of biospheric CO2 fluxes at large scales. However, the use of these tracers hinges on our ability to understand and better predict the activity of the enzyme carbonic anhydrase (CA) in different soil microbial groups, including phototrophs. Because different classes of the CA family (α, β and γ) may have different affinities to CO2 and OCS and their expression should also vary between different microbial groups, differences in the community structure could impact the ‘community-integrated’ CA activity differently for CO2 and OCS. Four soils of different pH were incubated in the dark or with a diurnal cycle for forty days to vary the abundance of native phototrophs. Fluxes of CO2, CO18O and OCS were measured to estimate CA activity alongside the abundance of bacteria, fungi and phototrophs. The abundance of soil phototrophs increased most at higher soil pH. In the light, the strength of the soil CO2 sink and the CA-driven CO2-H2O isotopic exchange rates correlated with phototrophs abundance. OCS uptake rates were attributed to fungi whose abundance was positively enhanced in alkaline soils but only in the presence of increased phototrophs. Our findings demonstrate that soil-atmosphere CO2, OCS and CO18O fluxes are strongly regulated by the microbial community structure in response to changes in soil pH and light availability and supports the idea that different members of the microbial community express different classes of CA, with different affinities to CO2 and OCS.
dc.language.isoen
dc.publisherElsevier
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/
dc.subject.enCarbonic anhydrase
dc.subject.enFungi
dc.subject.enPhototrophs
dc.subject.enOCS
dc.subject.enpH
dc.subject.enRespiration
dc.titleThe interaction of soil phototrophs and fungi with pH and their impact on soil CO 2 , CO 18 O and OCS exchange
dc.typeArticle de revue
dc.identifier.doi10.1016/j.soilbio.2017.09.009
dc.subject.halSciences du Vivant [q-bio]
bordeaux.journalSoil Biology and Biochemistry
bordeaux.page371-382
bordeaux.volume115
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-01608085
hal.version1
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01608085v1
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