Carbon and nitrogen recycling from microbial necromass to cope with C:N stoichiometric imbalance by priming

Cui, Jun; Zhu, Ziyuan; Xu, Xingliang; Liu, Shoulong; Jones, Davey L.; Kuzyakov, Yakov; Shibistova, Olga; Wu, Jinshui; Ge, Tida

doi:10.1016/j.soilbio.2020.107720

Cited by 277 publications

(125 citation statements)

References 73 publications

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“…In this study, SA and BA significantly increased total PLFA concentration ( Figure S2a,b), and changed microbial community structure ( Figure 5; Figure S2c,d), indicating the choice of substrates dictated specific growth and reproduction of soil microorganisms. The C/N ratio of the substrates regulated microbial community composition due to close relationship between the C/N ratio of substrates and decomposing microorganisms (Cui et al, 2020). In fact, fungi can utilize substrates of wider C/N ratio than that of substrates used by bacteria (Hogberg et al, 2007).…”

Section: Microbial Mechanisms Of C Sequestration In Straw and Biochmentioning

confidence: 99%

Greater microbial carbon use efficiency and carbon sequestration in soils: Amendment of biochar versus crop straws

Liu

et al. 2020

GCB Bioenergy

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Section: Microbial Mechanisms Of C Sequestration In Straw and Biochmentioning

confidence: 99%

Greater microbial carbon use efficiency and carbon sequestration in soils: Amendment of biochar versus crop straws

Liu

et al. 2020

GCB Bioenergy

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“…Soil microorganisms play an important role in biogeochemical cycle, which were affected by different fertilizer management and was closely relative with crop growth, nutrient cycling, and sustainability of soil productivity 1 . Soil microbial activity and community structure were affected by different agriculture management measures, such as the crop types, tillage, fertilizer regime, irrigation patterns, and so on 2 – 4 . Soil physicochemical properties were mainly affected by different fertilizer management, and the soil microbial activities and communities were also changed under application of different fertilizer condition 5 .…”

Section: Introductionmentioning

confidence: 99%

“…As a result, the object of this study were: (1) to analyze the effect on soil microbial community following 3-year of continuous application of different manure N input management, (2) to investigate the relationship between soil bacteria, fungi community and soil properties, and (3) to choose an proper fertilizer practice in a double-cropping paddy field of southern China.…”

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confidence: 99%

Effects of short-term manure nitrogen input on soil microbial community structure and diversity in a double-cropping paddy field of southern China

Tang

Xiao

et al. 2020

Sci Rep

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The soil physicochemical properties and soil microbial communities were affected by different fertilizer management. Fertilizer regime were closely relative to the soil texture and nutrient status in a doublecropping paddy field of southern China. However, there was limited information about the influence of different manure nitrogen (N) input on soil microbial communities in a double-cropping rice (Oryza sativa L.) field. Therefore, the short-term different manure N input rate management on soil bacterial and fungal diversity in a double-cropping paddy field of southern China were studied by using Illumina sequencing and quantitative real-time polymerase chain reaction technology in the present paper. The filed experiment were including 100% N of chemical fertilizer (M0), 30% N of organic manure and 70% N of chemical fertilizer (M30), 50% N of organic manure and 50% N of chemical fertilizer (M50), 100% N of organic manure (M100), and without N fertilizer input as control (CK). The results showed that diversity indices of soil microbial communities with application of organic manure and chemical N fertilizer treatments were higher than that of CK treatment. Application of organic manure and chemical N fertilizer management increase soil bacterial abundance of the phylum Actinobacteria, Proteobacteria and Gammaproteobacteria, and soil fungi abundance of the phylum Basidiomycota and Zygomycota were also increased. Compared with CK treatment, the value of Richness, Shannon and McIntosh indices, and taxonomic diversity were increased with M30, M50 and M100 treatments. This finding demonstrated that M30, M50 and M100 treatments modify soil bacterial and fungal diversity. Therefore, the combined application of organic manure and chemical fertilizer N management could significantly increase the abundance of profitable functional bacteria and fungi species in a doublecropping rice field of southern China.

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“…This organic C is often readily available for microorganisms and has a high turnover rate (Kuzyakov, 2002). However, rhizodeposits can also be stabilized by physical (aggregation), chemical (e.g., SOC-mineral interaction), and microbial processes (assimilated into the biomass and humified) and preserved as SOC (Six et al, 2002;Cotrufo et al, 2013;Wei et al, 2019;Cui et al, 2020). Recent studies have reported significant increases in SOC in paddy soil (Pan et al, 2004;Wu, 2011), largely due to the practice of residue incorporation and enhanced belowground C inputs (i.e., root and rhizodeposits) (Lu et al, 2002(Lu et al, , 2003.…”

Section: Introductionmentioning

confidence: 99%

Legacy effect of elevated CO2 and N fertilization on mineralization and retention of rice (Oryza sativa L.) rhizodeposit-C in paddy soil aggregates

Yuan

Chen

et al. 2020

Soil Ecol. Lett.

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Rhizodeposits in rice paddy soil are important in global C sequestration and cycling. This study explored the effects of elevated CO 2 and N fertilization during the rice growing season on the subsequent mineralization and retention of rhizodeposit-C in soil aggregates after harvest. Rice (Oryza sativa L.) was labeled with 13 CO 2 under ambient (400 ppm) and elevated (800 ppm) CO 2 concentrations with and without N fertilization. After harvest, soil with labeled rhizodeposits was collected, separated into three aggregate size fractions, and flood-incubated for 100 d. The initial rhizodeposit-13 C content of N-fertilized microaggregates was less than 65% of that of non-fertilized microaggregates. During the incubation of microaggregates separated from N-fertilized soils, 3%-9% and 9%-16% more proportion of rhizodeposit-13 C was mineralized to 13 CO 2 , and incorporated into the microbial biomass, respectively, while less was allocated to soil organic carbon than in the non-fertilized soils. Elevated CO 2 increased the rhizodeposit-13 C content of all aggregate fractions by 10%-80%, while it reduced cumulative 13 CO 2 emission and the bioavailable C pool size of rhizodeposit-C, especially in N-fertilized soil, except for the silt-clay fraction. It also resulted in up to 23% less rhizodeposit-C incorporated into the microbial biomass of the three soil aggregates, and up to 23% more incorporated into soil organic carbon. These results were relatively weak in the silt-clay fraction. Elevated CO 2 and N fertilizer applied in rice growing season had a legacy effect on subsequent mineralization and retention of rhizodeposits in paddy soils after harvest, the extent of which varied among the soil aggregates.

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Carbon and nitrogen recycling from microbial necromass to cope with C:N stoichiometric imbalance by priming

Cited by 277 publications

References 73 publications

Greater microbial carbon use efficiency and carbon sequestration in soils: Amendment of biochar versus crop straws

Greater microbial carbon use efficiency and carbon sequestration in soils: Amendment of biochar versus crop straws

Effects of short-term manure nitrogen input on soil microbial community structure and diversity in a double-cropping paddy field of southern China

Legacy effect of elevated CO2 and N fertilization on mineralization and retention of rice (Oryza sativa L.) rhizodeposit-C in paddy soil aggregates

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