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Decomposition of Microbial Necromass Is Divergent at the Individual Taxonomic Level in Soil
The turnover of microbial biomass plays an important part in providing a significant source of carbon (C) to soil organic C. However, whether the decomposition of microbial necromass (non-living microbial biomass) in the soil varies at the individual taxa level remains largely unknown. To fill up th...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Frontiers Media S.A.
2021
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8283313/ https://www.ncbi.nlm.nih.gov/pubmed/34276613 http://dx.doi.org/10.3389/fmicb.2021.679793 |
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author | Dong, Weiling Song, Alin Yin, Huaqun Liu, Xueduan Li, Jianwei Fan, Fenliang |
author_facet | Dong, Weiling Song, Alin Yin, Huaqun Liu, Xueduan Li, Jianwei Fan, Fenliang |
author_sort | Dong, Weiling |
collection | PubMed |
description | The turnover of microbial biomass plays an important part in providing a significant source of carbon (C) to soil organic C. However, whether the decomposition of microbial necromass (non-living microbial biomass) in the soil varies at the individual taxa level remains largely unknown. To fill up these gaps, we compared the necromass decomposition of bacterial and archaeal taxa by separating live microbial biomass with (18)O-stable isotope probing from dead microbial biomass in soil. Our results showed that most of the microbial necromass at the operational taxonomic unit level (88.51%), which mainly belong to Acidobacteria, Actinobacteria, Gemmatimonadetes, and Proteobacteria, decomposed significantly after 30 days. In addition, there were great variations in necromass decomposition within each phylum, such as the decomposition of operational taxonomic units in Proteobacteria that ranged from 51% (Beijerinckia) to 92% (Nitrosospira). More importantly, the necromass decomposition was not related to the chemical composition of the cell wall but might positively correlate with the guanine–cytosine content of DNA and negatively correlated with genome size. This study provided a new insight that the decomposition of microbial necromass in soil was divergent at the individual taxonomic level and could not be fully explained by previously proposed mechanisms. |
format | Online Article Text |
id | pubmed-8283313 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-82833132021-07-17 Decomposition of Microbial Necromass Is Divergent at the Individual Taxonomic Level in Soil Dong, Weiling Song, Alin Yin, Huaqun Liu, Xueduan Li, Jianwei Fan, Fenliang Front Microbiol Microbiology The turnover of microbial biomass plays an important part in providing a significant source of carbon (C) to soil organic C. However, whether the decomposition of microbial necromass (non-living microbial biomass) in the soil varies at the individual taxa level remains largely unknown. To fill up these gaps, we compared the necromass decomposition of bacterial and archaeal taxa by separating live microbial biomass with (18)O-stable isotope probing from dead microbial biomass in soil. Our results showed that most of the microbial necromass at the operational taxonomic unit level (88.51%), which mainly belong to Acidobacteria, Actinobacteria, Gemmatimonadetes, and Proteobacteria, decomposed significantly after 30 days. In addition, there were great variations in necromass decomposition within each phylum, such as the decomposition of operational taxonomic units in Proteobacteria that ranged from 51% (Beijerinckia) to 92% (Nitrosospira). More importantly, the necromass decomposition was not related to the chemical composition of the cell wall but might positively correlate with the guanine–cytosine content of DNA and negatively correlated with genome size. This study provided a new insight that the decomposition of microbial necromass in soil was divergent at the individual taxonomic level and could not be fully explained by previously proposed mechanisms. Frontiers Media S.A. 2021-07-02 /pmc/articles/PMC8283313/ /pubmed/34276613 http://dx.doi.org/10.3389/fmicb.2021.679793 Text en Copyright © 2021 Dong, Song, Yin, Liu, Li and Fan. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Microbiology Dong, Weiling Song, Alin Yin, Huaqun Liu, Xueduan Li, Jianwei Fan, Fenliang Decomposition of Microbial Necromass Is Divergent at the Individual Taxonomic Level in Soil |
title | Decomposition of Microbial Necromass Is Divergent at the Individual Taxonomic Level in Soil |
title_full | Decomposition of Microbial Necromass Is Divergent at the Individual Taxonomic Level in Soil |
title_fullStr | Decomposition of Microbial Necromass Is Divergent at the Individual Taxonomic Level in Soil |
title_full_unstemmed | Decomposition of Microbial Necromass Is Divergent at the Individual Taxonomic Level in Soil |
title_short | Decomposition of Microbial Necromass Is Divergent at the Individual Taxonomic Level in Soil |
title_sort | decomposition of microbial necromass is divergent at the individual taxonomic level in soil |
topic | Microbiology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8283313/ https://www.ncbi.nlm.nih.gov/pubmed/34276613 http://dx.doi.org/10.3389/fmicb.2021.679793 |
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