An evaluation of the core bacterial communities associated with hypersaline environments in the Qaidam Basin, China

Zhu, Derui; Han, Rui; Long, Qifu; Gao, Xiang; Xing, Jiangwa; Shen, Guoping; Li, Yongzhen

doi:10.1007/s00203-020-01927-7

Cited by 20 publications

(13 citation statements)

References 49 publications

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“…1B). These taxa were formerly veri ed in other hypersaline environments 14,24−26 , consistent with the results of this study, Betaproteobacteria were dominant in the salt water and sediments from Chott El Jerid Lake (75-95%) 23 , and some other studies proved that Gammaproteobacteria 12,13,27 and Alphaproteobacteria were the dominant classes 28 .…”

Section: Discussionsupporting

confidence: 90%

Diversity of Prokaryotic Microorganisms in Alkaline Saline Soil of the Qarhan Salt Lake Area in the Qinghai-Tibet Plateau

Wang¹,

Bao²

2021

Preprint

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Microbial metabolism is the driving force for biogeochemical cycles in the biosphere. The composition of microbial communities varies greatly in various ecological environments, particularly in extreme environments where animals and plants cannot survive. Unique microorganisms are often used as indicators to reflect environmental conditions, but the ecological reasons for the differences in microbial communities are still largely unknown. Here, we analyzed taxonomic and functional community profiles via high-throughput sequencing to determine the alkaline saline soil bacterial and archaeal communities in the Qarhan Salt Lake area in the Qinghai-Tibet Plateau. The results showed that Betaproteobacteria (Proteobacteria) and Halobacteria (Euryarchaeota) were most abundant in the soils of this area, which are most common in high salinity environments. Accordingly, microorganisms in this area that can adapt to local extremes often have functions such as chemoheterotrophy, aerobic chemoheterotrophy, nitrogen fixation, ureolysis, nitrate reduction, fermentation, methanogenesis, hydrogenotrophic methanogenesis, methanogenesis by CO2 reduction with H2, methanogenesis using formate, and dark hydrogen oxidation. There is no doubt that prokaryotic microorganisms in high salinity environments play an irreplaceable role in nitrogen and carbon cycling through special metabolic pathways.

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Section: Discussionsupporting

confidence: 90%

Diversity of Prokaryotic Microorganisms in Alkaline Saline Soil of the Qarhan Salt Lake Area in the Qinghai-Tibet Plateau

Wang¹,

Bao²

2021

Preprint

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“…The majority of the known moderate and extreme halophilic bacteria are included in the phyla Proteobacteria, Firmicutes, Bacteroidetes, Cyanobacteria and Spirochaetes (Jacob et al ., 2017). Hypersaline microbial communities from high altitudes are dominated by members of Proteobacteria, Bacteroidetes, Firmicutes and Actinobacteria and in some environments by members of the Verromicrobia, Cyanobacteria and Deinococcus‐Thermus phyla (Boutaiba et al ., 2011; Casamayor et al ., 2013; Naghoni et al ., 2017; Rathour et al ., 2020; Zhu et al ., 2020), all of which were identified in this study. Nevertheless, in the SdU Firmicutes and Cyanobacteria are not very frequent, and members of the Verrumicrobia and Spirochaetes were only detected in Río Grande.…”

Section: Discussionmentioning

confidence: 96%

Subsurface and surface halophile communities of the chaotropic Salar de Uyuni

Martínez

Escudero

Rodríguez

et al. 2021

Environmental Microbiology

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Salar de Uyuni (SdU) is the biggest athalosaline environment on Earth, holding a high percentage of the known world Li reserves. Due to its hypersalinity, temperature and humidity fluctuations, high exposure to UV radiation, and its elevated concentration of chaotropic agents like MgCl 2 , LiCl and NaBr, SdU is considered a polyextreme environment. Here, we report the prokaryotic abundance and diversity of 46 samples obtained in different seasons and geographical areas. The identified bacterial community was found to be more heterogeneous than the archaeal community, with both communities varying geographically. A seasonal difference has been detected for archaea. Salinibacter, Halonotius and Halorubrum were the most abundant genera in Salar de Uyuni. Different unclassified archaea were also detected. In addition, the diversity of two subsurface samples obtained at 20 and 80 m depth was evaluated and compared with the surface data, generating an evolutionary record of a multilayer hypersaline ecosystem.

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“…Zhu et al . 40 studied the core bacterial communities associated with hypersaline environments in lake water and sediments from the Qaidam Basin. Liu et al .…”

Section: Introductionmentioning

confidence: 99%

Diversity of prokaryotic microorganisms in alkaline saline soil of the Qarhan Salt Lake area in the Qinghai–Tibet Plateau

Wang

Bao

2022

Sci Rep

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The composition of microbial communities varies considerably across ecological environments, particularly in extreme environments, where unique microorganisms are typically used as the indicators of environmental conditions. However, the ecological reasons for the differences in microbial communities remain largely unknown. Herein, we analyzed taxonomic and functional community profiles via high-throughput sequencing to determine the alkaline saline soil bacterial and archaeal communities in the Qarhan Salt Lake area in the Qinghai–Tibet Plateau. The results showed that Betaproteobacteria (Proteobacteria) and Halobacteria (Euryarchaeota) were the most abundant in the soils of this area, which are common in high salinity environments. Accordingly, microbes that can adapt to local extremes typically have unique metabolic pathways and functions, such as chemoheterotrophy, aerobic chemoheterotrophy, nitrogen fixation, ureolysis, nitrate reduction, fermentation, dark hydrogen oxidation, and methanogenesis. Methanogenesis pathways include hydrogenotrophic methanogenesis, CO2 reduction with H2, and formate methanogenesis. Thus, prokaryotic microorganisms in high salinity environments are indispensable in nitrogen and carbon cycling via particular metabolic pathways.

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An evaluation of the core bacterial communities associated with hypersaline environments in the Qaidam Basin, China

Cited by 20 publications

References 49 publications

Diversity of Prokaryotic Microorganisms in Alkaline Saline Soil of the Qarhan Salt Lake Area in the Qinghai-Tibet Plateau

Diversity of Prokaryotic Microorganisms in Alkaline Saline Soil of the Qarhan Salt Lake Area in the Qinghai-Tibet Plateau

Subsurface and surface halophile communities of the chaotropic Salar de Uyuni

Diversity of prokaryotic microorganisms in alkaline saline soil of the Qarhan Salt Lake area in the Qinghai–Tibet Plateau

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