Differences in substrate use efficiency: impacts of microbial community composition, land use management, and substrate complexity

Bölscher, Tobias; Wadsö, Lars; Börjesson, Gunnar; Herrmann, Anke M.

doi:10.1007/s00374-016-1097-5

Cited by 65 publications

(32 citation statements)

References 75 publications

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“…For example, seedlings of conifer species can have a whole-plant CUE of around 0.7 (Wang et al, 2015), but conifer forests encompassing a range of tree ages and species exhibit a CUE (defined as net primary productivity, NPP, divided by gross primary productivity, GPP) of around 0.45 (DeLucia et al, 2007;Gifford, 2003). Similarly, ecosystemlevel CUE (defined as net ecosystem productivity, NEP, divided by GPP) emerges from linkages between plants and decomposers and the way both communities process and exchange C (Bradford and Crowther, 2013;Sinsabaugh et al, 2017). Because at the ecosystem level CO 2 is released by both autotrophs and heterotrophs, ecosystem CUE values are lower than those of plant communities.…”

Section: Introductionmentioning

confidence: 99%

Reviews and syntheses: Carbon use efficiency from organisms to ecosystems – definitions, theories, and empirical evidence

et al. 2018

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Abstract. The cycling of carbon (C) between the Earth surface and the atmosphere is controlled by biological and abiotic processes that regulate C storage in biogeochemical compartments and release to the atmosphere. This partitioning is quantified using various forms of C-use efficiency (CUE) – the ratio of C remaining in a system to C entering that system. Biological CUE is the fraction of C taken up allocated to biosynthesis. In soils and sediments, C storage depends also on abiotic processes, so the term C-storage efficiency (CSE) can be used. Here we first review and reconcile CUE and CSE definitions proposed for autotrophic and heterotrophic organisms and communities, food webs, whole ecosystems and watersheds, and soils and sediments using a common mathematical framework. Second, we identify general CUE patterns; for example, the actual CUE increases with improving growth conditions, and apparent CUE decreases with increasing turnover. We then synthesize > 5000 CUE estimates showing that CUE decreases with increasing biological and ecological organization – from unicellular to multicellular organisms and from individuals to ecosystems. We conclude that CUE is an emergent property of coupled biological–abiotic systems, and it should be regarded as a flexible and scale-dependent index of the capacity of a given system to effectively retain C.

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Section: Introductionmentioning

confidence: 99%

Reviews and syntheses: Carbon use efficiency from organisms to ecosystems – definitions, theories, and empirical evidence

et al. 2018

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“…The method allows quantification of energy turnover by soil organisms to show how bioenergetics define biogeochemical processes (Rong et al, 2007). Recently, calorimetry has been used to explore the functional importance of soil biota, including their composition, in various land use systems and across different temperature regimes (Sparling, 1983;Harris et al, 2012;Herrmann et al, 2014;Bölscher et al, 2016Bölscher et al, , 2017. Embedding calorimetry into a phenomics framework (i.e.…”

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Cortical Cell Diameter Is Key To Energy Costs of Root Growth in Wheat

et al. 2019

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Root growth requires substantial amounts of energy and thus carbohydrates. The energy costs of root growth are particularly high in both dry and compacted soil, due to high soil penetration resistance. Consequently, more carbon must be allocated from aboveground plant tissue to roots, which limits crop productivity. In this study, we tested the utility of root cortical cell diameter as a potential selection target to reduce the energy costs of root growth. Isothermal calorimetry was adopted for in situ quantification of the energy costs of root growth of 16 wheat (Triticum aestivum) genotypes under three levels of penetration resistance. We show that cortical cell diameter is a pivotal and heritable trait, which is strongly related to the energy costs of root growth. Genotypic diversity was found for cortical cell diameter and the energy costs of root growth. A large root cortical cell diameter correlated with reduced energy costs of root growth, particularly under high soil penetration resistance. Moreover, significant correlations were found between the ability to radially enlarge cortical cells upon greater penetration resistance (i.e. phenotypic plasticity) and the responsiveness in the energy costs of root growth. A higher degree of phenotypic plasticity in cortical cell diameter was associated with reduced energy costs of root growth as soil penetration resistance increased. We therefore suggest that genotypic diversity and phenotypic plasticity in cortical cell diameter should be harnessed to adapt crops to dry and compacted soils.

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“…Recently, fungi and Gram-negative bacteria have been suggested as important biomarkers when evaluating CUE (Bölscher et al, 2016), but the link between the two is so far not clearly established. The collected CUE data for litter decomposers (arguably mostly fungi, at least in the first phases of litter degradation) suggest a lower CUE than in bacterial communities (Fig.…”

Section: C-use Efficiency Across Levels Of Biological and Ecological mentioning

confidence: 99%

Reviews and syntheses: Carbon use efficiency from organisms to ecosystems – Definitions, theories, and empirical evidence

Manzoni¹,

Čapek²,

Porada³

et al. 2018

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Abstract. The cycling of carbon (C) between the Earth surface and the atmosphere is controlled by biological and abiotic processes that regulate C storage in biogeochemical compartments and release to the atmosphere. This partitioning is quantified using various forms of C-use efficiency (CUE) -the ratio of C remaining in a system 25 over C entering that system. Biological CUE is the fraction of C taken up allocated to new biomass. In soils and sediments C storage depends also on abiotic processes, so the term C-storage efficiency (CSE) can be used. Here we first review and reconcile CUE and CSE definitions proposed for autotrophic and heterotrophic organisms and communities, food webs, whole ecosystems, and soils and sediments using a common mathematical framework.Second, we identify general CUE patterns, such as the CUE increase with improving growing conditions, and 30 apparent decrease due to turnover. We then synthesize >6000 CUE estimates showing that CUE decreases with increasing biological and ecological organization -from unicellular to multicellular organisms, and from individuals to ecosystems. We conclude that CUE is an emergent property of coupled biological-abiotic systems, and it should be regarded as a flexible and scale-dependent index of the capacity of a given system to effectively retain C. 35

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Differences in substrate use efficiency: impacts of microbial community composition, land use management, and substrate complexity

Cited by 65 publications

References 75 publications

Reviews and syntheses: Carbon use efficiency from organisms to ecosystems – definitions, theories, and empirical evidence

Reviews and syntheses: Carbon use efficiency from organisms to ecosystems – definitions, theories, and empirical evidence

Cortical Cell Diameter Is Key To Energy Costs of Root Growth in Wheat

Reviews and syntheses: Carbon use efficiency from organisms to ecosystems – Definitions, theories, and empirical evidence

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