Impact of chars and readily available carbon on soil microbial respiration and microbial community composition in a dynamic incubation experiment

Lanza, Giacomo; Rebensburg, Philip; Kern, Jürgen; Lentzsch, Peter; Wirth, Stephan

doi:10.1016/j.still.2016.01.005

Cited by 36 publications

(24 citation statements)

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“…As a number of families belonging to Actinobacteria have been characterized as a group that plays an important role in the decomposition of plant cell wall polymers and recalcitrant organic matter (50), we expected the increased soil C% associated with the biochar and Napier grass root exudates would favor the Actinobacteria. Unexpectedly, we observed a decrease in the Actinomycetales relative abundance in biochar-amended samples, which was contrary to the findings of previous studies (32,34,35,38,51). However, previous reports on biochar functionality related to shifts in microbial community composition were often carried out in short-term studies (e.g., less than 1 year) (32,34,35,38,51).…”

Section: Discussioncontrasting

confidence: 99%

“…Unexpectedly, we observed a decrease in the Actinomycetales relative abundance in biochar-amended samples, which was contrary to the findings of previous studies (32,34,35,38,51). However, previous reports on biochar functionality related to shifts in microbial community composition were often carried out in short-term studies (e.g., less than 1 year) (32,34,35,38,51). In contrast, studies have reported decreases in their relative abundance at least 2 years after the initial addition of biochar (44,52).…”

Section: Discussioncontrasting

confidence: 99%

See 1 more Smart Citation

Comparative Metagenomics Reveals Enhanced Nutrient Cycling Potential after 2 Years of Biochar Amendment in a Tropical Oxisol

Deem

Crow

et al. 2019

Appl Environ Microbiol

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The complex structural and functional responses of agricultural soil microbial communities to the addition of carbonaceous compounds such as biochar remain poorly understood. This severely limits the predictive ability for both the potential enhancement of soil fertility and greenhouse gas mitigation. In this study, we utilized shotgun metagenomics in order to decipher changes in the microbial community in soil microcosms after 14 days of incubation at 23°C, which contained soils from biochar-amended and control plots cultivated with Napier grass. Our analyses revealed that biochar-amended soil microbiomes exhibited significant shifts in both community composition and predicted metabolism. Key metabolic pathways related to carbon turnover, such as the utilization of plant-derived carbohydrates as well as denitrification, were enriched under biochar amendment. These community shifts were in part associated with increased soil carbon, such as labile and aromatic carbon compounds, which was likely stimulated by the increased available nutrients associated with biochar amendment. These findings indicate that the soil microbiome response to the combination of biochar addition and to incubation conditions confers enhanced nutrient cycling and a small decrease in CO 2 emissions and potentially mitigates nitrous oxide emissions.Citation Yu J, Deem LM, Crow SE, Deenik J, Penton CR. 2019. Comparative metagenomics reveals enhanced nutrient cycling potential after 2 years of biochar amendment in a tropical oxisol. Appl Environ Microbiol 85:e02957-18. https://doi.

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Section: Discussioncontrasting

confidence: 99%

Section: Discussioncontrasting

confidence: 99%

Comparative Metagenomics Reveals Enhanced Nutrient Cycling Potential after 2 Years of Biochar Amendment in a Tropical Oxisol

Deem

Crow

et al. 2019

Appl Environ Microbiol

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“…Compared with traditional fertilization on sweet corn grown soil, biochar amendment had a larger influence on microorganisms (Nielsen et al, ). However, this was in contrast to Lanza, Rebensburg, Kern, Lentzsch, and Wirth (), who showed in short‐term incubation studies that adding hydrothermal carbonization char into soil did not significantly alter the microbial community distribution. These inconsistent results could be due to different experimental methods (i.e., pot trials, the experimental period), the natural history of the soil, and/or the physicochemical properties and pyrolysis temperature of the biochar.…”

Section: Discussioncontrasting

confidence: 70%

Simultaneous measurement of bacterial abundance and composition in response to biochar in soybean field soil using 16S rRNA gene sequencing

Liu

et al. 2017

Land Degrad Dev

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Biochar is an important soil conditioner. However, we have limited understanding of biochar effects on the microbial community traits of the rhizosphere and bulk soil in the field. The aim of this study was to examine the impacts of biochar amendment on microbial abundance and community in the rhizosphere and bulk soils in soybean‐growing fields. We applied 16S ribosomal RNA (rRNA) gene sequencing with an internal standard gene to quantitatively investigate biochar‐mediated changes in microbial composition and abundance in rhizosphere and bulk soils. The results indicated that the absolute abundance of bacterial taxa with internal standard can be more informative in describing soil microbial population distribution. A linear discriminant analysis effect size differential analysis showed that the biochar amendment significantly altered the soil microbial abundance and community composition. The bacteria in the rhizosphere soil showed more clear responses to biochar addition than the bacteria in the bulk soil. These results highlight the enhanced effect by biochar on bacterial population distribution in the rhizosphere. 16S rRNA gene sequencing with internal standard gene represents an effective method that can substantially improve 16S‐seq based microbiome studies by determining the 16S rRNA gene abundance and bacterial community composition simultaneously.

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“…In this context, Suppadit et al () found high increments in plant height, dry weight, yield, and nutrient amounts in some legumes as a result of biochar application. Also, Lanza et al () reported that biochar addition caused marked shifts in microbial populations, especially for plant growth‐promoting microorganisms (PGPM).…”

Section: Resultsmentioning

confidence: 99%

Interactive effects of biochar and micronutrients on faba bean growth, symbiotic performance, and soil properties

Mohamed

El-Meihy

Ali

et al. 2017

J. Plant Nutr. Soil Sci.

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Leguminous crops are significantly involved in the global symbiotic biological N2 Fixation (BNF), an eco‐friendly process in the agriculture system. Biochar is considered as a vital amendment in improving growth and quality of crops and soils. Few investigations have been conducted to determine the combination effect of biochar with microelements on growth of legumes and soil properties. This study was designed to study the effect of soybean straw‐derived biochar (SSDB) with or without microelements on soil microbial and chemical properties, growth, yield, and seed chemical composition of faba bean (Vicia faba L.). Results revealed that dehydrogenase (DHA) and phosphatase (P‐ase) activities were markedly improved with the increase of SSDB rates under addition of microelements and their highest values were recorded after 90 d. Significant increases were noticed in nodulation activities, nodulation numbers (30.1–72.8), concentrations of N (1.62–1.93%), P (0.15–0.21%), and K (0.53–0.67%), and seed chemical constituents due to the addition of SSDB in the presence of microelements. Moreover, the combination of biochar with microelements caused significant changes in microbial counts. Overall, this investigation shows the potential and role of SSDB in enhancing the growth quality of faba bean seeds as well as an improvement of soil characteristics.

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Impact of chars and readily available carbon on soil microbial respiration and microbial community composition in a dynamic incubation experiment

Cited by 36 publications

References 50 publications

Comparative Metagenomics Reveals Enhanced Nutrient Cycling Potential after 2 Years of Biochar Amendment in a Tropical Oxisol

Comparative Metagenomics Reveals Enhanced Nutrient Cycling Potential after 2 Years of Biochar Amendment in a Tropical Oxisol

Simultaneous measurement of bacterial abundance and composition in response to biochar in soybean field soil using 16S rRNA gene sequencing

Interactive effects of biochar and micronutrients on faba bean growth, symbiotic performance, and soil properties

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