Swallow, M. J. B., Quideau, S. A. Moisture effects on microbial Bird, J. A., Herman, D. J., Firestone, M. K. Rhizosphere priming of soil organic

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.

Our results also showed that rhizosphere priming effects on SOM decomposition were positive at all developmental stages in C 3 plant – `C 4 soil' system, but the direction of the rhizosphere priming effect changed at different developmental stages in the C 4 plant – `C 3 soil' system. Effects of nitrogen addition on soil-derived CO2 (a) and the rhizosphere priming effect (RPE) (b). Values represent the mean ± standard errors (n = 3). The rhizosphere priming effect (RPE) has been explained from the perspective of microbial responses to root exudates and nutrient availability. 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

These diverse results across individual studies offer us an opportunity to explore for potential general Rhizosphere priming effects in soil aggregates with different size classes XIAOHONG WANG, 1,2 FEIKE A. DIJKSTRA,3 LIMING YIN,1, DI SUN,1 AND WEIXIN CHENG 4 1CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China 2University of Chinese Academy of Sciences, Beijing 100049 China 3School of Life and Environmental … 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 negative priming effect, has also been observed (Cheng, 1996; Bader and Cheng, 2007). Although rhizosphere priming effects have frequently been reported in a variety of soil-plant systems, the mechanisms behind these effects remain unclear (Kuzyakov, 2010). EFFECTSOFSOILNUTRIENT AVAILABILITYON RHIZOSPHEREPRIMING The dataset contains output from the PrimeSCale model that combines observation-based data on plant and soil properties to quantify the rhizosphere priming effect (RPE).

As plants tend to increase belowground C allocation with increased temperatures and CO 2 concentrations, priming effects need to be considered in our long-term analysis of soil C bud-gets in a changing environment.

In the presence of plants, a priming effect occurs in the direct vicinity of the living roots, and it is called rhizosphere priming effect (RPE). Plant‐mediated and environmental …

istry rhizosphere priming effect: a meta-analysis. Soil. Biology and 24 Jan 2019 I investigate the mechanisms behind the Rhizosphere Priming Effect (i.e.

Evidence from growth chamber and greenhouse experiments indicates that the rhizosphere priming effect (RPE, stimulation or suppression of soil organic matter (SOM) decomposition by live roots and their rhizospheric biota) may be sensitive to environmental factors such as temperature and level of sunlight.

In this meta-analysis, we searched for relevant articles in Web of Science database 3. Results. Across 2009-09-01 · Although the rhizosphere priming effect on SOM decomposition was highly significant for both planted treatments, soil microbial biomass C was not significantly affected by this priming effect .

nutrient availability may oc cur because priming also depe nds on. soil properties such as total C content a nd te xtur e (Zhang et al., 2021-02-21 · It is known that nitrogen (N) input modulates the rhizosphere priming effect (RPE); however, the magnitude and driving mechanisms of priming under increasing rates of fertilizer application remain unclear. 15N-urea (control, 75 (N75), 150 (N150), 225 (N225), and 300 (N300) kg N ha−1) was applied to a plant (maize)-soil (rice paddy) system and the RPE was monitored during the trumpet period (the most active stage) of plant growth.
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Results. Across 2009-09-01 · Although the rhizosphere priming effect on SOM decomposition was highly significant for both planted treatments, soil microbial biomass C was not significantly affected by this priming effect . The amounts of soil microbial biomass C were not significantly different between the unplanted control and the planted treatments or between different sampling dates. A comprehensive understanding of the rhizosphere priming effect (RPE) on the decomposition of soil organic carbon (SOC) requires an integration of many factors. It is unclear how N form-induced change in soil pH affects the RPE and SOC sequestration.

It is unclear how N form-induced change in soil pH affects the RPE and SOC sequestration. In the presence of plants, a priming effect occurs in the direct vicinity of the living roots, and it is called rhizosphere priming effect (RPE). Plant‐mediated and environmental factors, such as, plant species, development stage, soil organic matter content, photosynthesis intensity, and N fertilization which affect RPE are reviewed and discussed in this paper.
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Rhizosphere priming effects on soil carbon and nitrogen dynamics among tree species with and Rhizosphere Priming Effect Soil Science of Temperate

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Soil microbial activity . Stable C isotopes. organic matter (SOM) or heterotrophic soil respiration, including basal SOM decomposition and rhizosphere priming effect (RPE) in which root-derived labile car-. Rhizosphere priming effect on soil organic carbon decomposition under plant species differing in soil acidification and root exudation. Xiaojuan Wang1, Caixian Background and Aims A comprehensive understanding of the rhizosphere priming effect (RPE) on the decomposition of soil organic carbon (SOC) requires an volume around roots) are priming effects (Cheng et al.