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Halophilic and halotolerant bacterial resources and their response to NaCl stress in Emerald Lake of Mangya
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Tangliang LUO1, Yafang ZHAO1, Huimei LIU1, Huiyan MA2, Zhanfeng XIA1, *, Ruixi AI1
Acta Microbiologica Sinica | 2025, 65(4) : 1396 - 1416
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Acta Microbiologica Sinica | 2025, 65(4): 1396-1416
• Microbial resources diversity •
Halophilic and halotolerant bacterial resources and their response to NaCl stress in Emerald Lake of Mangya
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Tangliang LUO1, Yafang ZHAO1, Huimei LIU1, Huiyan MA2, Zhanfeng XIA1, *, Ruixi AI1
Affiliations
  • 1.College of Life Science and Technology, Tarim University, Alar, Xinjiang, China
  • 2.Zoucheng Inspection and Testing Center, Jining, Shandong, China
Published: 2025-04-04 doi: 10.13343/j.cnki.wsxb.20240535
Outline
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The high salt concentration of Emerald Lake in Mangya, Qinghai Province, makes it an ideal environment for mining halophilic (halotolerant) microorganisms. [Objective] To mine the halophilic (halotolerant) microbial resources in the Emerald Lake, compare the morphological characteristics of halophilic (halotolerant) bacteria exposed to different concentrations of NaCl, and explore the response of halophilic (halotolerant) microorganisms to NaCl stress. [Method] Lake water, lake salt, and lakeshore saline soil samples were collected from the nearshore area of the Emerald Lake. The halophilic (halotolerant) bacteria were isolated by eight different media with three salt concentrations (10%, 15%, and 20%). The colony morphology, cell morphology, and internal structures of three strains of halophilic (halotolerant) bacteria exposed to different concentrations of NaCl were observed by optical microscopy, scanning electron microscopy, and transmission electron microscopy, respectively. [Results] A total of 58 strains of halophilic (halotolerant) bacteria were isolated, including 31 strains of halotolerant bacteria and 27 strains of halophilic bacteria, belonging to 16 genera. Halobacillus (40.7%) and Bacillus (19.3%) were the dominant genera of halophilic bacteria and halotolerant bacteria, respectively. The strains tolerant to Na+, Mg2+, K+, and Ca2+ accounted for 84.5%. The cell lengths of Virgibacilluslitoralis TRM 83602 and Piscibacillussalipiscarius TRM 83622 exposed to different concentrations of NaCl were significantly different, while that of Brevibacteriumepidermidis TRM 83610 did not change significantly. [Conclusion] The Emerald Lake harbors abundant halophilic (halotolerant) bacteria. NaCl concentrations can affect the growth, reproduction, colony morphology, cell morphology, and internal structures of halophilic (halotolerant) bacteria. This study enriches the understanding about the microbial resources in the Emerald Lake, providing abundant strain resources for further development and utilization of halophilic (halotolerant) microorganisms.

Emerald Lake of Mangya  /  halophilic bacteria  /  halotolerant bacteria  /  NaCl stress  /  Halobacillus
Tangliang LUO, Yafang ZHAO, Huimei LIU, Huiyan MA, Zhanfeng XIA, Ruixi AI. Halophilic and halotolerant bacterial resources and their response to NaCl stress in Emerald Lake of Mangya[J]. Acta Microbiologica Sinica, 2025 , 65 (4) : 1396 -1416 . DOI: 10.13343/j.cnki.wsxb.20240535
Funding
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  • The Third Xinjiang Scientific Expedition Program(2022xjkk150307)
  • The Open Project of State Key Laboratory of Microbial Metabolism(MMLKF22-01)
  • The President’s Fund of Tarim University(TDZKSS202309)
Appendix
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Year 2025 volume 65 Issue 4
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Article Info
doi: 10.13343/j.cnki.wsxb.20240535
  • Receive Date：2024-08-28
  • Online Date：2026-02-06
  • Published：2025-04-04
Article Data
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History
  • Received：2024-08-28
  • Accepted：2024-12-01
Funding
The Third Xinjiang Scientific Expedition Program(2022xjkk150307)
The Open Project of State Key Laboratory of Microbial Metabolism(MMLKF22-01)
The President’s Fund of Tarim University(TDZKSS202309)
Affiliations
    1.College of Life Science and Technology, Tarim University, Alar, Xinjiang, China
    2.Zoucheng Inspection and Testing Center, Jining, Shandong, China

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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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