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Journal of Desert Research ›› 2022, Vol. 42 ›› Issue (5): 177-186.DOI: 10.7522/j.issn.1000-694X.2022.00033

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A review on autotrophic microorganisms research in dryland soils

Kang Zhao1(), Lei Zhang1, Kaikai Li2, Fei Wang3, Bingchang Zhang2()   

  1. 1.School of Life Science /, Shanxi Normal University,Taiyuan 030000,China
    2.School of Geographical Sciences, Shanxi Normal University,Taiyuan 030000,China
    3.College of Resource and Environment,Shanxi Agricultural University,Taiyuan 030000,China
  • Received:2021-12-07 Revised:2022-03-02 Online:2022-09-20 Published:2022-09-22
  • Contact: Bingchang Zhang

Abstract:

Microbial CO2 fixation is an important autotrophic process for maintaining soil microbial community structure and heterotrophic processes in arid areas, which affects the succession and ecological function of biological soil crusts. In recent years, the extensive application of soil microbial genomics has expanded the community of autotrophs, which used to be dominated by cyanobacteria and algae. These results supported the possibility of non-cyanobacteria prokaryotes to import organic matter into soils. In this text, the distribution characteristics of cyanobacteria and algae and the regulation mechanism of environmental factors in dryland soil were reviewed. Moreover, the exploration of non-cyanobacterial autotrophs and their ecological functions in dryland soil in recent years were summarized characterizing by the coupled microbial energy metabolism pathways and biological carbon sequestration cycles. Finally, soil microbial autotrophs in dryland soils were summarized and prospected in order to provide a theoretical basis for understanding the formation and development mechanism of soil microbial community, and to provide a scientific basis for the construction of biological soil crusts.

Key words: autotrophic microorganisms, biological carbon sequestration pathway, biological soil crust, chemolithotrophy, dryland soils

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