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Microbial Catabolic Activity: Methods, Pertinence, and Potential Interest for Improving Microbial Inoculant Efficiency

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Title: Microbial Catabolic Activity: Methods, Pertinence, and Potential Interest for Improving Microbial Inoculant Efficiency
Authors: Ndour, P. M. S., Bargaz, A., Rchiad, Z., Pawlett, M., Clark, I. M., Mauchline, T. H., Harris, J., Lyamlouli, K.
Source: Microbial Ecology. 86:2211-2230
Publisher Information: Springer Science and Business Media LLC, 2023.
Publication Year: 2023
Subject Terms: 2. Zero hunger, CLPP, Agriculture, 15. Life on land, Microbial catabolic activity, Agricultural Inoculants, 6. Clean water, Carbon, Soil, Soil quality indicators, Microbial inoculant efficiency, Soil function, Microbial inoculant effciency, Soil Microbiology
Description: Microbial catabolic activity (MCA) defined as the degrading activity of microorganisms toward various organic compounds for their growth and energy is commonly used to assess soil microbial function potential. For its measure, several methods are available including multi-substrate-induced respiration (MSIR) measurement which allow to estimate functional diversity using selected carbon substrates targeting specific biochemical pathways. In this review, the techniques used to measure soil MCA are described and compared with respect to their accuracy and practical use. Particularly the efficiency of MSIR-based approaches as soil microbial function indicators was discussed by (i) showing their sensitivity to different agricultural practices including tillage, amendments, and cropping systems and (ii) by investigating their relationship with soil enzyme activities and some soil chemical properties (pH, soil organic carbon, cation exchange capacity). We highlighted the potential of these MSIR-based MCA measurements to improve microbial inoculant composition and to determine their potential effects on soil microbial functions. Finally, we have proposed ideas for improving MCA measurement notably through the use of molecular tools and stable isotope probing which can be combined with classic MSIR methods. Graphical abstract describing the interrelation between the different parts and the concepts developed in the review.
Document Type: Article
File Description: application/pdf
Language: English
ISSN: 1432-184X
0095-3628
DOI: 10.1007/s00248-023-02250-6
Access URL: https://pubmed.ncbi.nlm.nih.gov/37280438
https://dspace.lib.cranfield.ac.uk/handle/1826/19933
Rights: Springer Nature TDM
Accession Number: edsair.doi.dedup.....be231430e6b5a60ee43b1a7457f2b7ef
Database: OpenAIRE
Description
Abstract:Microbial catabolic activity (MCA) defined as the degrading activity of microorganisms toward various organic compounds for their growth and energy is commonly used to assess soil microbial function potential. For its measure, several methods are available including multi-substrate-induced respiration (MSIR) measurement which allow to estimate functional diversity using selected carbon substrates targeting specific biochemical pathways. In this review, the techniques used to measure soil MCA are described and compared with respect to their accuracy and practical use. Particularly the efficiency of MSIR-based approaches as soil microbial function indicators was discussed by (i) showing their sensitivity to different agricultural practices including tillage, amendments, and cropping systems and (ii) by investigating their relationship with soil enzyme activities and some soil chemical properties (pH, soil organic carbon, cation exchange capacity). We highlighted the potential of these MSIR-based MCA measurements to improve microbial inoculant composition and to determine their potential effects on soil microbial functions. Finally, we have proposed ideas for improving MCA measurement notably through the use of molecular tools and stable isotope probing which can be combined with classic MSIR methods. Graphical abstract describing the interrelation between the different parts and the concepts developed in the review.
ISSN:1432184X
00953628
DOI:10.1007/s00248-023-02250-6