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Abstract <p>Zabuye Lake (ZL) is a soda lake, which is located in the Qinghai-Tibet Plateau (QTP) of China at an altitude of 4379 m and is a soda lake known for its unique saline-alkali characteristics. High-throughput sequencing of archaeal 16S rRNA genes was performed to evaluate the archaeal community composition in ZL and examine its relationship with environmental factors. The major archaeal phyla identified in the samples included <i>Euryarchaeota</i> (relative abundance 23.49–99.98%), followed by <i>Woesearchaeota</i> (0–76.42%) and <i>Thaumarchaeota</i> (0–1.96%). The most abundant archaeal genus was <i>Halorubrum</i> (0.04–41.60%), although significant proportions of unclassified archaea (9–20%) were present in all samples. The high relative abundances of <i>Woesearchaeota</i>, <i>Methanolobus</i>, and <i>Methanomassiliicoccus</i> were correlated with concentrations of total salinity, total nitrogen, and total organic carbon and <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11021_2025_8688_Article_IEq1.gif" Format="GIF" Height="20" Rendition="HTML" Resolution="72" Type="Linedraw" Width="49" /> </InlineMediaObject> <EquationSource Format="TEX">\({\text{HCO}}_{3}^{ - }\)</EquationSource> <!--MicBio2460877Tao-m1--> </InlineEquation>, which was consistent with the unique saline-alkali properties of ZL. These results suggest that these archaea may play key roles in the biogeochemical cycling within extreme soda lakes like ZL.</p>

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Archaeal Communities within the Alkaline-Soda Zabuye Lake in the Qinghai-Tibet Plateau

  • 期刊论文

  • 发表日期：

    2025年6月14日

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  • Yujie Tao,
  • Rui Han,
  • Guoping Shen,
  • Xiang Gao,
  • Jiangwa Xing,
  • Rong Wang,
  • Derui Zhu,
  • Peixia Zhang

摘要

Abstract

Zabuye Lake (ZL) is a soda lake, which is located in the Qinghai-Tibet Plateau (QTP) of China at an altitude of 4379 m and is a soda lake known for its unique saline-alkali characteristics. High-throughput sequencing of archaeal 16S rRNA genes was performed to evaluate the archaeal community composition in ZL and examine its relationship with environmental factors. The major archaeal phyla identified in the samples included Euryarchaeota (relative abundance 23.49–99.98%), followed by Woesearchaeota (0–76.42%) and Thaumarchaeota (0–1.96%). The most abundant archaeal genus was Halorubrum (0.04–41.60%), although significant proportions of unclassified archaea (9–20%) were present in all samples. The high relative abundances of Woesearchaeota, Methanolobus, and Methanomassiliicoccus were correlated with concentrations of total salinity, total nitrogen, and total organic carbon and \({\text{HCO}}_{3}^{ - }\) , which was consistent with the unique saline-alkali properties of ZL. These results suggest that these archaea may play key roles in the biogeochemical cycling within extreme soda lakes like ZL.