2020-6-20 · The rhizosphere priming effect (RPE) is the change in native soil C mineralization rate relative to the unplanted control. ANPP above-ground net primary productivity BNPP below-ground net primary productivity. For details about species selection and C and N budget computation see Supporting Information Methods S1. Plant images by Alice Trotel.
2021-4-1 · Rhizosphere priming is a process where inputs of labile C compounds contained in root exudates results in increased decomposition of soil organic matter (SOM). Recent discoveries demonstrate that
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. Implications of rhizosphere priming effects on SOM
2017-7-2 · Collectively our results show that ecosystem responses to global change may hinge on the balance between rhizosphere priming and SOM protection and highlight the importance of dynamically linking plants and microbes in terrestrial biosphere models.
2020-6-20 · The rhizosphere priming effect (RPE) is the change in native soil C mineralization rate relative to the unplanted control. ANPP above-ground net primary productivity BNPP below-ground net primary productivity. For details about species selection and C and N budget computation see Supporting Information Methods S1. Plant images by Alice Trotel.
Rhizosphere is the most important place where the priming effects take place. Rhizosphere priming effects reflect the turnover rate of soil carbon and nitrogen and affect the acquisition of competition for nutrients by plants and microorganisms thus maintaining nutrient balance among the various components of an ecosystem.
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
2017-8-1 · 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.
2020-6-20 · The rhizosphere priming effect (RPE) is the change in native soil C mineralization rate relative to the unplanted control. ANPP above-ground net primary productivity BNPP below-ground net primary productivity. For details about species selection and C and N budget computation see Supporting Information Methods S1. Plant images by Alice Trotel.
2003-9-1 · The rhizosphere priming effect was responsible for a major portion of the total soil C efflux. Cumulative soil C loss caused by rhizosphere effects during the whole growing season equated to the amount of root biomass C for the soybean treatment and 71 of root biomass C for the wheat treatment.
2020-5-7 · The priming of soil C induced by glucose remained higher than that induced by alanine for up to 15 h. After this the priming of soil C induced by glucose declined and the priming of soil C induced by alanine remained relatively constant until the end of the 7-d study.
2018-3-7 · The rhizosphere priming effect (RPE) is the acceleration or retardation of SOM decomposition by living roots and associated rhizosphere organisms (Kuzyakov 2002 Cheng Kuzyakov 2005) and is one of the most important components of rhizosphere interactions (Finzi et al. 2015).
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
2013-7-29 · Rhizosphere priming is the change in decomposition of soil organic matter (SOM) caused by root activity. Rhizosphere priming plays a crucial role in soil carbon (C) dynamics and their response to global climate change. Rhizosphere priming may be affected by soil nutrient availability but rhizosphere priming
2016-12-13 · Maize rhizosphere priming field estimates using 13Cnatural abundance Amit Kumar Yakov Kuzyakov Johanna Pausch Received 22 March 2016/Accepted 9 June 2016/Published online 15 June 2016 # Springer International Publishing Switzerland 2016 Abstract Introduction Root-mediated changes in soil organic matter(SOM)decomposition
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
2010-10-8 · 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.
2021-2-21 · Background and aims 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. Methods 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
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. Implications of rhizosphere priming effects on SOM
2016-9-1 · Rhizosphere priming effects i.e. changes in the rate of SOM decomposition were indicated by an increase or decrease of SOM-derived CO 2 production in planted compared to an unplanted soil. By continuously labeling plants with 13 C-depleted CO 2 we were able to differentiate root-derived CO 2 from SOM-derived CO 2 and calculate RPE as the difference in SOM-derived CO 2 between planted
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.
2016-4-22 · The four species differed substantially in their rhizosphere priming effect (RPE). Except at Day 84 white lupin showed the greatest positive RPE of all species in contrast to the negative RPE produced by chickpea. This was further evidenced by an apparent loss and accumulation of soil organic carbon (SOC) in the rhizosphere of white lupin and
2021-4-1 · Rhizosphere priming is a process where inputs of labile C compounds contained in root exudates results in increased decomposition of soil organic matter (SOM). Recent discoveries demonstrate that
2019-10-14 · 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.
Rhizosphere interactions (activity in the root zone) has a high influence on the fluxes of carbon to and from the soil. One very important part of the rhizosphere interactions is the rhizosphere priming effect (RPE) which is defined as changes in the SOM decomposition rate
2019-10-14 · 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.
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