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Greater soil microbial biomass carbon and nitrogen in well-watered treatment than Laboratory studies have shown that priming effects, caused by inputs of carbon into the rhizosphere, can change the rate of soil organic matter (SOM) decomposition and could have significant impacts on soil carbon cycling. However, there have been few studies in field conditions because of experimental constraints but field data are needed to improve models that forecast the effects of climate 382 Kuzyakov Review: Factors affecting rhizosphere priming effects Yakov Kuzyakov1* 1 Institute of Soil Science and Land Evaluation, University of Hohenheim, Emil-Wolff-Straûe 27, D-70599 Stuttgart, Germany Accepted 31 May 2002 Summary ± Zusammenfassung Einflussfaktoren auf Priming-Effekte in der Rhizosphäre Living plants change the local environment in the rhizosphere and consequently Abstract Rhizosphere priming is crucial for regulating soil carbon and nitrogen biogeochemical cycles. An appreciable number of studies have been conducted to quantify the rhizosphere priming effect (RPE), and have shown that the RPE is sensitive to changes of plant and soil conditions. These diverse results across individual studies offer us an opportunity to explore for potential general The temperature sensitivity of soil organic matter (SOM) decomposition has been a crucial topic in global change research, yet remains highly uncertain. One of the contributing factors to this uncertainty is the lack of understanding about the role of rhizosphere priming effect (RPE) in shaping the temperature sensitivity. Using a novel continuous 13C-labeling method, we investigated the Rhizosphere priming effects differ between Norway spruce (Picea abies) and Scots pine seedlings cultivated under two levels of light intensity. / Li, Jian; Zhou, Moyan; Alaei, Saeed; Bengtson, Per. In: Soil Biology and Biochemistry, Vol. 145, 107788, 2020.

Values represent the mean ± standard errors (n = 3). And the relationships between rhizosphere priming effects (RPE) and qCO 2 (d), RPE and CUE (e), RPE and MI C:N (f) across all planted treatments. +1 Information of paddy soil and lou soil. 2021-02-01 Search within Search term The temperature sensitivity of soil organic matter (SOM) decomposition has been a crucial topic in global change research, yet remains highly uncertain. One of the contributing factors to this uncertainty is the lack of understanding about the role of rhizosphere priming effect (RPE) in shaping the temperature sensitivity.

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Without P fertilization, rhizosphere priming effect increased soil C, N and P release. • P fertilization decreased the rhizosphere priming of grass on soil C and N release when N was limiting, but not for legume.

Plant roots increase carbon emission from permafrost soils

Effects of rhizosphere properties on the rhizosphere priming effect (RPE) are unknown. This study aimed to link species variation in RPE with plant traits and rhizosphere properties. Four C3 species (chickpea, Cicer arietinum; field pea, Pisum sativum; wheat, Triticum aestivum; and white lupin, Lupinus albus) differing in soil acidification and root exudation, were grown in a C4 soil.

We investigated RPEs of three tree species (larch, ash and Chinese ﬁr) and the impact of Rhizosphere acidiﬁcation was shown to be an important factor affecting the magnitude and direction of RPE. Future studies on RPE modelling and mechanistic understanding of the pro-cesses that regulate RPE should consider the effect of rhizosphere pH. Introduction In decomposition studies, a priming effect is deﬁned as a strong The change in native soil organic carbon (SOC) decomposition caused by plant roots or the rhizosphere priming effect (RPE) is a common phenomenon. Although most of the SOC is stored in aggregates with different size classes, the RPE in aggregates and the underlying mechanisms remain unclear. of these rhizosphere interactions is the rhizosphere priming effect (RPE), which is deﬁned as the stimulation or suppression of soil organic matter (SOM)decomposition by live roots and associated rhizosphere organisms when compared to SOM decomposition from rootless soils under the same environmental conditions. One of the contributing factors to this uncertainty is the lack of understanding about the role of rhizosphere priming effect (RPE) in shaping the temperature sensitivity. Using a novel continuous 13 C‐labeling method, we investigated the temperature sensitivity of RPE and its impact on the temperature sensitivity of SOM decomposition.
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This study introduced a chemical process that could also contribute to RPE: root exudates (organic acid ligands) could liberate mineral-protected carbon (C) in soil for microbial degradation.

rhizosphere priming effect Evidencia experimental de la abundancia de bacterias del suelo como el principal iniciador del efecto de preparación de la rizosfera Ma YP1,2,3#, ZJ Zhang1,2#, TQ Su1#, CA Busso4, ER Johnston5, XG Han1,6, XM Zhang2* Resumen.
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The change in native soil organic carbon (SOC) decomposition caused by plant roots or the rhizosphere priming effect (RPE) is a common phenomenon. Although most of the SOC is stored in aggregates with different size classes, the RPE in aggregates and the underlying mechanisms remain unclear. 2021-02-21 · The mechanisms underlying the rhizosphere priming effect (RPE) along the nitrogen (N) fertilization gradient. Under low N input, N competition between microorganisms (MO) and plants is strong, which leads to an increase in microbial N demand, microbial C:N imbalance, and root-C input. Rhizosphere interactions have high influence on the fluxes of carbon to and from terrestrial ecosystems. One very important part of the rhizosphere interactions is the rhizosphere priming effect (RPE) which is defined as changes in the decomposition rate of soil organic matter (SOM) in response to labile organic carbon input from plant roots.

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The rhizosphere priming effect (RPE) is a mechanism by which plants interact with soil functions. The large impact of the RPE on soil organic matter decomposition rates (from 50% reduction to 380% increase) warrants similar attention to that being paid to climatic controls on ecosystem functions. Rhizosphere priming effect on soil organic carbon decomposition under plant species differing in soil acidiﬁcation and root exudation Xiaojuan Wang1, Caixian Tang1, Julia Severi1, Clayton R. Butterly1 and Jeff A. Baldock2 Living plants change the local environment in the rhizosphere and consequently affect the rate of soil organic matter (SOM) decomposition. The rate may increase for 3‐ to 5‐folds, or decrease by 10 % to 30 % by plant cultivation. Such short‐term changes of rate (intensity) of SOM decomposition are due to the priming effect.

Both microbial carbon efficiency (CUE) and microbial of these rhizosphere interactions is the rhizosphere priming effect (RPE), which is deﬁned as the stimulation or suppression of soil organic matter (SOM)decomposition by live roots and associated rhizosphere organisms when compared to SOM decomposition from rootless soils under the same environmental conditions. interactions is the rhizosphere priming effect (RPE) which is defined as changes in the SOM decomposition rate in response to labile organic carbon input from plant roots (Dijkstra et al., 2013). The RPE can be divided into positive and negative effects on rhizosphere priming, where a “positive priming effect” is defined as an increase in the Rhizosphere priming effect on soil organic carbon decomposition under plant species differing in soil acidiﬁcation and root exudation Xiaojuan Wang1, Caixian Tang1, Julia Severi1, Clayton R. Butterly1 and Jeff A. Baldock2 1Department of Animal, Plant and Soil Sciences, Centre for AgriBioscience, La Trobe University, Melbourne Campus, Bundoora, VIC 3086, Australia; 2CSIRO Agriculture, Glen Conceptual diagram of the effects of N form (NO 3-N vs. NH 4-N)-induced pH changes on the rhizosphere priming effect (the RPE) and involved N immobilization mechanisms.