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Effect of short-term warming and drought on the methanogenic communities in degraded peatlands in Zoige Plateau

Peatlands in Qinghai-Tibetan are degrading with climate change and human activities. Peatland degradation and climate change affect methane emissions. Methanogens are key functional microbes during methane production; however, knowledge of methanogens in degraded peatlands is lacking. Here, we inves...

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Autores principales: Li, Wei, Shi, Rui, Yuan, Lingchen, Lan, Xianli, Feng, Defeng, Chen, Huai
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9650419/
https://www.ncbi.nlm.nih.gov/pubmed/36386660
http://dx.doi.org/10.3389/fmicb.2022.880300
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author Li, Wei
Shi, Rui
Yuan, Lingchen
Lan, Xianli
Feng, Defeng
Chen, Huai
author_facet Li, Wei
Shi, Rui
Yuan, Lingchen
Lan, Xianli
Feng, Defeng
Chen, Huai
author_sort Li, Wei
collection PubMed
description Peatlands in Qinghai-Tibetan are degrading with climate change and human activities. Peatland degradation and climate change affect methane emissions. Methanogens are key functional microbes during methane production; however, knowledge of methanogens in degraded peatlands is lacking. Here, we investigated the effects of short-term (1 year) warming (OTC), drought (20%), and their combination on methanogens in the degraded peatlands on the Zoige Plateau of China via qPCR and clone library analysis. The results showed that Methanomicrobiales and Methanobacteriales were predominant in all the treatments. Non-metric multidimensional scaling (NMDS) and PERMANOVA analyses showed that the methanogenic community structure among the climate change treatments was not significantly different. The relative abundance of methanogen communities showed insignificant variation among the climate change treatments. The copy number and Shannon diversity of methanogens were significantly different within the climate change treatments, and drought significantly decreased the copy number of methanogens when compared to the control. The Redundancy analysis (RDA) results and correlation analysis showed that the environmental variables measured had no significant effect on methanogenic community structure and Shannon diversity. These results indicate that methanogens are insensitive to short-term climate change in degraded peatlands. This study provides insight into methane emissions from the Zoige Plateau peatlands by focusing on the possible responses of the methanogens to climate-driven changes.
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spelling pubmed-96504192022-11-15 Effect of short-term warming and drought on the methanogenic communities in degraded peatlands in Zoige Plateau Li, Wei Shi, Rui Yuan, Lingchen Lan, Xianli Feng, Defeng Chen, Huai Front Microbiol Microbiology Peatlands in Qinghai-Tibetan are degrading with climate change and human activities. Peatland degradation and climate change affect methane emissions. Methanogens are key functional microbes during methane production; however, knowledge of methanogens in degraded peatlands is lacking. Here, we investigated the effects of short-term (1 year) warming (OTC), drought (20%), and their combination on methanogens in the degraded peatlands on the Zoige Plateau of China via qPCR and clone library analysis. The results showed that Methanomicrobiales and Methanobacteriales were predominant in all the treatments. Non-metric multidimensional scaling (NMDS) and PERMANOVA analyses showed that the methanogenic community structure among the climate change treatments was not significantly different. The relative abundance of methanogen communities showed insignificant variation among the climate change treatments. The copy number and Shannon diversity of methanogens were significantly different within the climate change treatments, and drought significantly decreased the copy number of methanogens when compared to the control. The Redundancy analysis (RDA) results and correlation analysis showed that the environmental variables measured had no significant effect on methanogenic community structure and Shannon diversity. These results indicate that methanogens are insensitive to short-term climate change in degraded peatlands. This study provides insight into methane emissions from the Zoige Plateau peatlands by focusing on the possible responses of the methanogens to climate-driven changes. Frontiers Media S.A. 2022-10-28 /pmc/articles/PMC9650419/ /pubmed/36386660 http://dx.doi.org/10.3389/fmicb.2022.880300 Text en Copyright © 2022 Li, Shi, Yuan, Lan, Feng and Chen. 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
Li, Wei
Shi, Rui
Yuan, Lingchen
Lan, Xianli
Feng, Defeng
Chen, Huai
Effect of short-term warming and drought on the methanogenic communities in degraded peatlands in Zoige Plateau
title Effect of short-term warming and drought on the methanogenic communities in degraded peatlands in Zoige Plateau
title_full Effect of short-term warming and drought on the methanogenic communities in degraded peatlands in Zoige Plateau
title_fullStr Effect of short-term warming and drought on the methanogenic communities in degraded peatlands in Zoige Plateau
title_full_unstemmed Effect of short-term warming and drought on the methanogenic communities in degraded peatlands in Zoige Plateau
title_short Effect of short-term warming and drought on the methanogenic communities in degraded peatlands in Zoige Plateau
title_sort effect of short-term warming and drought on the methanogenic communities in degraded peatlands in zoige plateau
topic Microbiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9650419/
https://www.ncbi.nlm.nih.gov/pubmed/36386660
http://dx.doi.org/10.3389/fmicb.2022.880300
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