Salinity Effect on Soil Bacterial and Archaeal Diversity and Assembly in <i>Phragmites australis</i> Salt Marshes in the Qaidam Basin, China
Extreme environments foster phylogenetically diverse microorganisms and unique community assembly patterns. Plateau saline marsh lakes represent understudied extreme habitats characterized by dual stressors of high salinity and low temperature. Here, we analyzed the soil bacterial and archaeal diver...
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2025-05-01
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| author | Pengcheng Zhu Yuhui Wang Wenyi Sheng Mingyang Yu Wei Wei Wenlong Sun Jian Gao Zhenwei Xu Ming Cao Yuzhi Wang Lele Liu Weihua Guo |
| author_facet | Pengcheng Zhu Yuhui Wang Wenyi Sheng Mingyang Yu Wei Wei Wenlong Sun Jian Gao Zhenwei Xu Ming Cao Yuzhi Wang Lele Liu Weihua Guo |
| author_sort | Pengcheng Zhu |
| collection | DOAJ |
| description | Extreme environments foster phylogenetically diverse microorganisms and unique community assembly patterns. Plateau saline marsh lakes represent understudied extreme habitats characterized by dual stressors of high salinity and low temperature. Here, we analyzed the soil bacterial and archaeal diversity in three salt marshes of the Qaidam Basin on the Qinghai-Tibetan Plateau, China. While the bacterial and archaeal alpha diversity showed no significant differences among the three salt marshes, the community composition varied significantly. Notably, soil salinity (indicated by electric conductivity, EC) exerted opposing effects on microbial diversity—suppressing bacterial while promoting archaeal communities. Stochastic processes were the predominant mechanism for both bacterial and archaeal community assembly, where the weights were, in descending order, drift, homogeneous selection, and dispersal limitation. Network analysis revealed predominantly positive co-occurrence patterns within both bacterial and archaeal communities. We did not find a direct relationship between any bacterial or archaeal co-occurrence network properties and soil EC, but there was a significant correlation of network complexity to microbial diversity, which was influenced by EC. Our findings indicate distinct responses of bacterial and archaeal diversity to varying salinity levels, while the underlying assembly processes appear to be conserved in driving shifts in community diversity in plateau salt marsh wetlands. |
| format | Article |
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| institution | Kabale University |
| issn | 2076-2607 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
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| series | Microorganisms |
| spelling | doaj-art-c3d5f4ec080e4f4eb6f0700242af4b502025-08-20T03:29:44ZengMDPI AGMicroorganisms2076-26072025-05-01136125310.3390/microorganisms13061253Salinity Effect on Soil Bacterial and Archaeal Diversity and Assembly in <i>Phragmites australis</i> Salt Marshes in the Qaidam Basin, ChinaPengcheng Zhu0Yuhui Wang1Wenyi Sheng2Mingyang Yu3Wei Wei4Wenlong Sun5Jian Gao6Zhenwei Xu7Ming Cao8Yuzhi Wang9Lele Liu10Weihua Guo11Qingdao Key Laboratory of Ecological Protection and Restoration, School of Life Sciences, Shandong University, Qingdao 266237, ChinaNational Glycoengineering Research Center, Shandong University, Qingdao 266237, ChinaQingdao Key Laboratory of Ecological Protection and Restoration, School of Life Sciences, Shandong University, Qingdao 266237, ChinaQingdao Key Laboratory of Ecological Protection and Restoration, School of Life Sciences, Shandong University, Qingdao 266237, ChinaQingdao Key Laboratory of Ecological Protection and Restoration, School of Life Sciences, Shandong University, Qingdao 266237, ChinaQingdao Key Laboratory of Ecological Protection and Restoration, School of Life Sciences, Shandong University, Qingdao 266237, ChinaKey Laboratory of Intelligent Health Perception and Ecological Restoration of Rivers and Lakes, Ministry of Education, Hubei University of Technology, 28 Linan Road, Wuhan 430068, ChinaInstitute of Ecology, Key Laboratory for Earth Surface Processes of the Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing 100871, ChinaCollege of Biotechnology, Tianshui Normal University, Tianshui 741001, ChinaQingdao Key Laboratory of Ecological Protection and Restoration, School of Life Sciences, Shandong University, Qingdao 266237, ChinaQingdao Key Laboratory of Ecological Protection and Restoration, School of Life Sciences, Shandong University, Qingdao 266237, ChinaQingdao Key Laboratory of Ecological Protection and Restoration, School of Life Sciences, Shandong University, Qingdao 266237, ChinaExtreme environments foster phylogenetically diverse microorganisms and unique community assembly patterns. Plateau saline marsh lakes represent understudied extreme habitats characterized by dual stressors of high salinity and low temperature. Here, we analyzed the soil bacterial and archaeal diversity in three salt marshes of the Qaidam Basin on the Qinghai-Tibetan Plateau, China. While the bacterial and archaeal alpha diversity showed no significant differences among the three salt marshes, the community composition varied significantly. Notably, soil salinity (indicated by electric conductivity, EC) exerted opposing effects on microbial diversity—suppressing bacterial while promoting archaeal communities. Stochastic processes were the predominant mechanism for both bacterial and archaeal community assembly, where the weights were, in descending order, drift, homogeneous selection, and dispersal limitation. Network analysis revealed predominantly positive co-occurrence patterns within both bacterial and archaeal communities. We did not find a direct relationship between any bacterial or archaeal co-occurrence network properties and soil EC, but there was a significant correlation of network complexity to microbial diversity, which was influenced by EC. Our findings indicate distinct responses of bacterial and archaeal diversity to varying salinity levels, while the underlying assembly processes appear to be conserved in driving shifts in community diversity in plateau salt marsh wetlands.https://www.mdpi.com/2076-2607/13/6/1253salt marshescommunity assemblysoil salinitystochastic processesmicrobial interactions |
| spellingShingle | Pengcheng Zhu Yuhui Wang Wenyi Sheng Mingyang Yu Wei Wei Wenlong Sun Jian Gao Zhenwei Xu Ming Cao Yuzhi Wang Lele Liu Weihua Guo Salinity Effect on Soil Bacterial and Archaeal Diversity and Assembly in <i>Phragmites australis</i> Salt Marshes in the Qaidam Basin, China Microorganisms salt marshes community assembly soil salinity stochastic processes microbial interactions |
| title | Salinity Effect on Soil Bacterial and Archaeal Diversity and Assembly in <i>Phragmites australis</i> Salt Marshes in the Qaidam Basin, China |
| title_full | Salinity Effect on Soil Bacterial and Archaeal Diversity and Assembly in <i>Phragmites australis</i> Salt Marshes in the Qaidam Basin, China |
| title_fullStr | Salinity Effect on Soil Bacterial and Archaeal Diversity and Assembly in <i>Phragmites australis</i> Salt Marshes in the Qaidam Basin, China |
| title_full_unstemmed | Salinity Effect on Soil Bacterial and Archaeal Diversity and Assembly in <i>Phragmites australis</i> Salt Marshes in the Qaidam Basin, China |
| title_short | Salinity Effect on Soil Bacterial and Archaeal Diversity and Assembly in <i>Phragmites australis</i> Salt Marshes in the Qaidam Basin, China |
| title_sort | salinity effect on soil bacterial and archaeal diversity and assembly in i phragmites australis i salt marshes in the qaidam basin china |
| topic | salt marshes community assembly soil salinity stochastic processes microbial interactions |
| url | https://www.mdpi.com/2076-2607/13/6/1253 |
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