Short-Term Simulated Warming Changes the Beta Diversity of Bacteria in Taiga Forests’ Permafrost by Altering the Composition of Dominant Bacterial Phyla
Permafrost is widely degraded in the context of global warming. The spatial distribution of soil microbes in these cold habitats has received a lot of attention. However, knowledge on the changes in permafrost microbial communities following permafrost thaw is still limited. We used permafrost soil...
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ftdoajarticles:oai:doaj.org/article:f929664a30e84bd9a6f2833ffd1c873b 2024-09-09T20:02:51+00:00 Short-Term Simulated Warming Changes the Beta Diversity of Bacteria in Taiga Forests’ Permafrost by Altering the Composition of Dominant Bacterial Phyla Yunbing Jiang Song Wu Libin Yang Yongzhi Liu Mingliang Gao Hongwei Ni 2024-04-01T00:00:00Z https://doi.org/10.3390/f15040693 https://doaj.org/article/f929664a30e84bd9a6f2833ffd1c873b EN eng MDPI AG https://www.mdpi.com/1999-4907/15/4/693 https://doaj.org/toc/1999-4907 doi:10.3390/f15040693 1999-4907 https://doaj.org/article/f929664a30e84bd9a6f2833ffd1c873b Forests, Vol 15, Iss 4, p 693 (2024) short-term simulated warming permafrost soil bacteria composition and diversity Plant ecology QK900-989 article 2024 ftdoajarticles https://doi.org/10.3390/f15040693 2024-08-05T17:49:32Z Permafrost is widely degraded in the context of global warming. The spatial distribution of soil microbes in these cold habitats has received a lot of attention. However, knowledge on the changes in permafrost microbial communities following permafrost thaw is still limited. We used permafrost soil from a taiga forest for indoor experiments using pristine soil as a control (CK, −2 °C), simulating warming for 15 days at temperatures of 0 °C (T 1 ), 2 °C (T 2 ), and 4 °C (T 3 ). Amplicons of the hypervariable V4 region of the bacterial 16S rRNA gene were sequenced to identify bacterial communities present in the soils of pristine and warming treatments. Warming increased the average relative abundance of Proteobacteria (5.71%) and decreased that of Actinobacteriota (7.82%). The Beta diversity changed ( p = 0.001) and significantly correlated with the pH, microbial biomass carbon (MBC), and available potassium (AK) of the soil ( p < 0.05). Warming further increased the Alpha diversity (Simpson index), changing the functional pathways of the bacterial communities, whereby secondary functional pathways produced significant correlations with bacterial phyla ( p < 0.05). Combined, the results indicated that short-term warming altered the Beta diversity of soil bacteria in a taiga forest’s permafrost soil by decreasing the abundance of Actinobacteria and increasing that of Ascomycetes, while pH, MBC, and AK were identified as the soil factors influencing the structure and diversity of the bacterial communities. Article in Journal/Newspaper permafrost taiga Directory of Open Access Journals: DOAJ Articles Forests 15 4 693 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
short-term simulated warming permafrost soil bacteria composition and diversity Plant ecology QK900-989 |
spellingShingle |
short-term simulated warming permafrost soil bacteria composition and diversity Plant ecology QK900-989 Yunbing Jiang Song Wu Libin Yang Yongzhi Liu Mingliang Gao Hongwei Ni Short-Term Simulated Warming Changes the Beta Diversity of Bacteria in Taiga Forests’ Permafrost by Altering the Composition of Dominant Bacterial Phyla |
topic_facet |
short-term simulated warming permafrost soil bacteria composition and diversity Plant ecology QK900-989 |
description |
Permafrost is widely degraded in the context of global warming. The spatial distribution of soil microbes in these cold habitats has received a lot of attention. However, knowledge on the changes in permafrost microbial communities following permafrost thaw is still limited. We used permafrost soil from a taiga forest for indoor experiments using pristine soil as a control (CK, −2 °C), simulating warming for 15 days at temperatures of 0 °C (T 1 ), 2 °C (T 2 ), and 4 °C (T 3 ). Amplicons of the hypervariable V4 region of the bacterial 16S rRNA gene were sequenced to identify bacterial communities present in the soils of pristine and warming treatments. Warming increased the average relative abundance of Proteobacteria (5.71%) and decreased that of Actinobacteriota (7.82%). The Beta diversity changed ( p = 0.001) and significantly correlated with the pH, microbial biomass carbon (MBC), and available potassium (AK) of the soil ( p < 0.05). Warming further increased the Alpha diversity (Simpson index), changing the functional pathways of the bacterial communities, whereby secondary functional pathways produced significant correlations with bacterial phyla ( p < 0.05). Combined, the results indicated that short-term warming altered the Beta diversity of soil bacteria in a taiga forest’s permafrost soil by decreasing the abundance of Actinobacteria and increasing that of Ascomycetes, while pH, MBC, and AK were identified as the soil factors influencing the structure and diversity of the bacterial communities. |
format |
Article in Journal/Newspaper |
author |
Yunbing Jiang Song Wu Libin Yang Yongzhi Liu Mingliang Gao Hongwei Ni |
author_facet |
Yunbing Jiang Song Wu Libin Yang Yongzhi Liu Mingliang Gao Hongwei Ni |
author_sort |
Yunbing Jiang |
title |
Short-Term Simulated Warming Changes the Beta Diversity of Bacteria in Taiga Forests’ Permafrost by Altering the Composition of Dominant Bacterial Phyla |
title_short |
Short-Term Simulated Warming Changes the Beta Diversity of Bacteria in Taiga Forests’ Permafrost by Altering the Composition of Dominant Bacterial Phyla |
title_full |
Short-Term Simulated Warming Changes the Beta Diversity of Bacteria in Taiga Forests’ Permafrost by Altering the Composition of Dominant Bacterial Phyla |
title_fullStr |
Short-Term Simulated Warming Changes the Beta Diversity of Bacteria in Taiga Forests’ Permafrost by Altering the Composition of Dominant Bacterial Phyla |
title_full_unstemmed |
Short-Term Simulated Warming Changes the Beta Diversity of Bacteria in Taiga Forests’ Permafrost by Altering the Composition of Dominant Bacterial Phyla |
title_sort |
short-term simulated warming changes the beta diversity of bacteria in taiga forests’ permafrost by altering the composition of dominant bacterial phyla |
publisher |
MDPI AG |
publishDate |
2024 |
url |
https://doi.org/10.3390/f15040693 https://doaj.org/article/f929664a30e84bd9a6f2833ffd1c873b |
genre |
permafrost taiga |
genre_facet |
permafrost taiga |
op_source |
Forests, Vol 15, Iss 4, p 693 (2024) |
op_relation |
https://www.mdpi.com/1999-4907/15/4/693 https://doaj.org/toc/1999-4907 doi:10.3390/f15040693 1999-4907 https://doaj.org/article/f929664a30e84bd9a6f2833ffd1c873b |
op_doi |
https://doi.org/10.3390/f15040693 |
container_title |
Forests |
container_volume |
15 |
container_issue |
4 |
container_start_page |
693 |
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1809934764070666240 |