The ATP concentration in the soil microbial biomass

Contin, Marco; Todd, A. D.; Brookes, Philip C.

doi:10.1016/s0038-0717(00)00204-2

Cited by 79 publications

(30 citation statements)

References 24 publications

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“…This high concentration (around 10-12 μmol ATP g -1 Bc) is unchanged irrespective of soil organic matter content and soil management or if readily decomposable substrates, e.g., glucose or plant residues, have recently been given, which can trigger intense microbial activity (Contin et al, 2001;De Nobili et al, 1996). Literature data support the concept of the biomass having, for all practical considerations, throughout the world, an ATP concentration around 10-12 µmol ATP g -1 Bc (Table 2) (Contin et al, 2001). Zero C inputs are quite frequent in cultivated soils, which may be kept fallow for relatively long periods, receiving hardly any C input, until the crop grows again.…”

Section: Conserved Biological Properties Of the Soil Microbial Biomasmentioning

confidence: 98%

“…The microbial biomass ATP concentration (about 11-14 μmol ATP g -1 Bc) by 12 d of incubation was the same as in fresh soil. Therefore, a fraction of the microbial biomass that had survived storage (about 20% by 47 years of storage and 10% by 80 years) in the FYM-treated soils appears to be able to resume normal metabolic activity, at least in terms of its high and typical microbial biomass ATP concentration (Contin et al, 2001). …”

Section: Resistance and Resilience Of Soil Microbial Biomass To Dryinmentioning

confidence: 99%

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The complexity of soil biological sustainability

Nobili¹,

Brookes²,

Sánchez-Monedero³

et al. 2016

Acta Hortic.

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Additions of organic amendments to soil not only compensate for decreased soil C, but also contribute to energy requirements for conserving biological activity levels. The soil microbial biomass displays some highly conserved, and possibly unique, characteristics that do not permit a classic interpretation of microbial metabolic parameter data. The resilience of soil microbial biomass and the role of soil organic matter in sustaining microbial biomass under practically zero C inputs were assessed in two long term incubation experiments using soils from the Broadbalk experiment at Rothamsted (UK). Soils with low organic C contents, showed the greatest decline in biomass C during the first 30 d of incubation. The ATP concentration of this rapidly declining microbial biomass did not change during the prolonged incubation period, confirming this peculiar character of the soil microbial biomass. Specific respiration rate did not depend upon substrate availability, being higher in soils that had received the lowest C inputs. Qualitative and quantitative changes observed in humic fractions suggest that humified soil organic matter is a much more dynamic soil fraction than is normally considered and provides a utilizable energy reserve for soil microorganisms. Carbon levels can be successfully restored in soils through practices such as incorporation of crop residues, re-vegetation and application of manures, biosolids and composts. Some amendments, such as olive mill waste compost, promote incorporation of altered lignin structures, N-containing compounds and carbohydrates into humic acids. The mineral-bound fraction of humic C also increases, after their addition, and contributes to the accumulation of the most inert soil C pools.

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Section: Conserved Biological Properties Of the Soil Microbial Biomasmentioning

confidence: 98%

Section: Resistance and Resilience Of Soil Microbial Biomass To Dryinmentioning

confidence: 99%

The complexity of soil biological sustainability

Nobili¹,

Brookes²,

Sánchez-Monedero³

et al. 2016

Acta Hortic.

View full text Add to dashboard Cite

show abstract

“…There is now a much larger literature base than previously. Contin et al (2001) combined all the available literature, including soils below pH 4.8, those containing actively decomposing substrates and soils without a conditioning incubation. The mean biomass ATP concentration was 11.0 µmol ATP g -1 biomass C, based on 207 separate analyses, remarkably close to the earlier values.…”

Section: The Atp Concentration Of the Soil Microbial Biomassmentioning

confidence: 99%

Through the Eye of the Needle — The Story of the Soil Microbial Biomass

Powlson¹,

Xu²,

Brookes³

2017

Microbial Biomass

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“…The toxic effect of actinides, the activating effect of glucose, the effect of temperature and moisture content on microbial biomass and activity are observed. The estimation of biomass is done by ATP measurement [30,31,32,33]. The global activity of microorganisms is measured by their respiration.…”

Section: Batch Experimentsmentioning

confidence: 99%