Microbial community composition and rhizodeposit-carbon assimilation in differently managed temperate grassland soils

Denef, Karolien; Roobroeck, Dries; Wadu, Mihiri C.W. Manimel; Lootens, Peter; Boeckx, Pascal

doi:10.1016/j.soilbio.2008.10.008

Cited by 223 publications

(134 citation statements)

References 46 publications

Supporting

Mentioning

124

Contrasting

Order By: Relevance

“…The fast allocation of recent plant assimilated C to AMF and saprophytic soil fungi and the poor response of actinomycetes is in line with previous studies (Johnson et al, 2002;Treonis et al, 2004;Denef et al, 2009). However, we did not find a time lag between the response of saprophytic fungi and bacteria (Olsson and Johnson, 2005;Denef et al, 2007).…”

Section: Species and Management Effects On C Fluxsupporting

confidence: 91%

“…In contrast, the high levels of 13 C in the saprophytic fungi one week after the pulse could in part be due to recycling of 13 C released by other soil biota upon their death. It is notable that the 13 C signature in the PLFA 18:1ω9, which is often used as fungal PLFA (Treonis et al, 2004;Chung et al, 2007;Denef et al, 2009), showed a pattern more alike that found in bacteria than in the other PLFA indicative for saprophytic fungi. This result may be due to the fact that the PLFA 18:1ω9 is also found in bacteria (Zelles, 1997).…”

Section: Species and Management Effects On C Fluxmentioning

confidence: 94%

“…Management treatments of fertiliser application have been shown to suppress the allocation of recent photosynthetic C to AMF, and more generally to all fungal PLFA biomarkers (Bradley et al, 2006;Denef et al, 2009). In our study we did not find such a response as 13 C enrichment in soil microbial PLFAs were consistent across management treatments.…”

Section: Species and Management Effects On C Fluxmentioning

confidence: 99%

“…We predicted that C uptake by the plants and transfer of this C to soil microbes would be faster in fertilised plots and in plants with high growth rates (Ward et al, 2009). We also expected mycorrhizal fungi to show rapid assimilation of plant C (Johnson et al, 2002) but less so in fertilised plots (Bradley et al, 2006;Denef et al, 2009), with the signal of recent plant C remaining longer in fungi than in shorter-lived bacteria Rousk and Baath, 2007).…”

Section: Introductionmentioning

confidence: 97%

“…The rate of assimilation, transfer and retention of recent photosynthetic assimilated C in ecosystems thus depends on the community composition of plants and/or of soil microbes (Dorrepaal, 2007;Ward et al, 2009;Woodin et al, 2009;Paterson et al, 2009), but also on the activity of the plant and microbial taxa which can be altered by ecosystem management (Treonis et al, 2004;Hill et al, 2007;Denef et al, 2009). In a long-term grassland restoration experiment Smith et al (2003Smith et al ( , 2008 showed that cessation of mineral fertiliser use and the seeding of target plant species increased plant species richness and the abundance of soil fungi, compared to soil bacteria.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Rapid transfer of photosynthetic carbon through the plant-soil system in differently managed species-rich grasslands

et al. 2011

View full text Add to dashboard Cite

Abstract. Plant-soil interactions are central to short-term carbon (C) cycling through the rapid transfer of recently assimilated C from plant roots to soil biota. In grassland ecosystems, changes in C cycling are likely to be influenced by land use and management that changes vegetation and the associated soil microbial communities. Here we tested whether changes in grassland vegetation composition resulting from management for plant diversity influences shortterm rates of C assimilation and transfer from plants to soil microbes. To do this, we used an in situ 13 C-CO 2 pulselabelling approach to measure differential C uptake among different plant species and the transfer of the plant-derived 13 C to key groups of soil microbiota across selected treatments of a long-term plant diversity grassland restoration experiment. Results showed that plant taxa differed markedly in the rate of 13 C assimilation and concentration: uptake was greatest and 13 C concentration declined fastest in Ranunculus repens, and assimilation was least and 13 C signature remained longest in mosses. Incorporation of recent plantderived 13 C was maximal in all microbial phosopholipid fatty acid (PLFA) markers at 24 h after labelling. The greatest incorporation of 13 C was in the PLFA 16:1ω5, a marker for arbuscular mycorrhizal fungi (AMF), while after 1 week most 13 C was retained in the PLFA18:2ω6,9 which is indicative of assimilation of plant-derived 13 C by saprophytic fungi. Our results of 13 C assimilation and transfer within plant species and soil microbes were consistent across management treatments. Overall, our findings suggest that plant diversity restoration management may not directly affect the C assimilation or retention of C by individual plant taxa or groups of soil microbes, it can impact on the fate of recent C byCorrespondence to: G. B. De Deyn (gerlindede@gmail.com) changing their relative abundances in the plant-soil system. Moreover, across all treatments we found that plant-derived C is rapidly transferred specifically to AMF and decomposer fungi, indicating their consistent key role in the cycling of recent plant derived C.

show abstract

Section: Species and Management Effects On C Fluxsupporting

confidence: 91%

Section: Species and Management Effects On C Fluxmentioning

confidence: 94%

Section: Species and Management Effects On C Fluxmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Rapid transfer of photosynthetic carbon through the plant-soil system in differently managed species-rich grasslands

et al. 2011

View full text Add to dashboard Cite

show abstract

The Carbon Cycle

2020

Soil Microbiology

View full text Add to dashboard Cite

Influence of plant traits, soil microbial properties, and abiotic parameters on nitrogen turnover of grassland ecosystems

et al. 2016

View full text Add to dashboard Cite

International audienceAlthough it is known that multiple interactions among plant functional traits, microbial properties , and abiotic soil parameters influence the nutrient turnover, the relative contribution of each of these groups of variables is poorly understood. We manipulated grassland plant functional composition and soil nitrogen (N) availability in a multisite mesocosm experiment to quantify their relative effects on soil N turnover. Overall, root traits, arbuscular mycorrhizal colonization, denitrification potential, as well as N availability and water availability, best explained the variation in measured ecosystem properties, especially the trade-off between nutrient sequestration and plant biomass production. Their relative contributions varied with soil N availability. In relatively N-poor soils (10–20 μg·N·g −1 soil), N turnover was mainly controlled by microbial properties and abiotic soil parameters, whereas in the relatively N-rich soils (110–120 μg·N·g −1 soil), N turnover was mainly controlled by plant traits and microbial properties. This experiment is a strong demonstration of the importance of functional characteristics of both plants and soil microbes, and their interplay with soil N availability, for N turnover in grassland soils

show abstract

Microbial community composition and rhizodeposit-carbon assimilation in differently managed temperate grassland soils

Cited by 223 publications

References 46 publications

Rapid transfer of photosynthetic carbon through the plant-soil system in differently managed species-rich grasslands

Rapid transfer of photosynthetic carbon through the plant-soil system in differently managed species-rich grasslands

The Carbon Cycle

Influence of plant traits, soil microbial properties, and abiotic parameters on nitrogen turnover of grassland ecosystems

Contact Info

Product

Resources

About