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The effect of microbial diversity and biomass on microbial respiration in two soils along the soil chronosequence
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SYSNO ASEP 0564377 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The effect of microbial diversity and biomass on microbial respiration in two soils along the soil chronosequence Author(s) Vicena, J. (CZ)
Ardestani, Masoud Mortazavi (BC-A) RID, ORCID
Baldrian, Petr (MBU-M) RID, ORCID
Frouz, Jan (BC-A) RID, ORCIDArticle number 1920 Source Title Microorganisms. - : MDPI
Roč. 10, č. 10 (2022)Number of pages 14 s. Language eng - English Country CH - Switzerland Keywords carbon availability ; decomposition of soil organic matter ; fungal biomass ; leaf litter ; microbial biomass ; microbial diversity Subject RIV DF - Soil Science OECD category Soil science Subject RIV - cooperation Institute of Microbiology - Microbiology, Virology R&D Projects LM2015075 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) EF16_013/0001782 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) 8I20001 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access Institutional support BC-A - RVO:60077344 ; MBU-M - RVO:61388971 UT WOS 000873107100001 EID SCOPUS 85140903821 DOI 10.3390/microorganisms10101920 Annotation Microbial diversity plays an important role in the decomposition of soil organic matter. However, the pattern and drivers of the relationship between microbial diversity and decomposition remain unclear. In this study, we followed the decomposition of organic matter in soils where microbial diversity was experimentally manipulated. To produce a gradient of microbial diversity, we used soil samples at two sites of the same chronosequence after brown coal mining in Sokolov, Czech Republic. Soils were X-ray sterilized and inoculated by two densities of inoculum from both soils and planted with seeds of six local plant species. This created two soils each with four levels of microbial diversity characterized by next-generation sequencing. These eight soils were supplied, or not, by litter of the bushgrass Calamagrostis epigejos, and microbial respiration was measured to assess the rate of decomposition. A strong positive correlation was found between microbial diversity and decomposition of organic matter per gram of carbon in soil, which suggests that microbial diversity supports decomposition if the microbial community is limited by available carbon. In contrast, microbial respiration per gram of soil negatively correlated with bacterial diversity and positively with fungal biomass, suggesting that in the absence of a carbon limitation, decomposition rate is controlled by the amount of fungal biomass. Soils with the addition of grass litter showed a priming effect in the initial stage of decomposition compared to the samples without the addition of litter. Thus, the relationship between microbial diversity and the rate of decomposition may be complex and context dependent. Workplace Biology Centre (since 2006) Contact Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Year of Publishing 2023 Electronic address https://www.mdpi.com/2076-2607/10/10/1920
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