Priming effects in the rhizosphere and root detritusphere of two wet-grassland graminoids

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F22%3A43905633" target="_blank" >RIV/60076658:12310/22:43905633 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007/s11104-021-05191-6" target="_blank" >https://link.springer.com/article/10.1007/s11104-021-05191-6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11104-021-05191-6" target="_blank" >10.1007/s11104-021-05191-6</a>

Result language

angličtina

Original language name

Priming effects in the rhizosphere and root detritusphere of two wet-grassland graminoids

Original language description

Aims The rhizosphere and root detritusphere are hotspots of microbial activity, where root-derived inputs induce intensive priming effects (PE) on soil organic carbon (SOC) decomposition. These conditions for induced PE differ between rhizosphere and detritusphere and are modified by plant traits.Methods Continuous labelling with C-13-depleted CO2 allowed for the partitioning of plant and soil C sources of CO2 efflux and the investigation of the PE in the rhizosphere and detritusphere of slow-growing conservative Carex acuta and fast-growing acquisitive Glyceria maxima.Results Glyceria allocated more C into the soil, induced higher microbial activity and a larger portion of active microorganisms, and depleted mineral N stronger than Carex. Its rhizosphere PE was 2.5 times stronger than that of Carex. Root residues (detritusphere) induced negative PE at the early stage of decomposition (1-9 months). The depletion of available organic substances in the detritusphere of more easily decomposable Glyceria roots resulted in positive PE after 3 months. The PE in the detritusphere of N-poorer Carex roots was more intensive but started after 9 months.Conclusions The rhizosphere PE was positive and stronger than the detritusphere PE, which switched from initially negative to positive PE after depletion of available substances during few months. More productive species with faster N-uptake and higher belowground C input (here Glyceria) induce larger rhizosphere PE than slower-growing species (here Carex). The N-rich Glyceria roots decompose faster than N-poor roots of Carex and, consequently, have a lower impact on SOC dynamics and induced a smaller positive detritusphere PE. Graphic abstract

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

40104 - Soil science

Project

<a href="/en/project/GA19-17139S" target="_blank" >GA19-17139S: The role of nutrient availability in microbial soil organic matter formation and stabilization in agricultural soils of different C saturation status</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Plant and Soil

ISSN

0032-079X

e-ISSN

1573-5036

Volume of the periodical

472

Issue of the periodical within the volume

1-2

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

22

Pages from-to

105-126

UT code for WoS article

000710050500001

EID of the result in the Scopus database

2-s2.0-85117711860