干旱区生态环境知识资源中心(Arid): Multiple energy sources and metabolic strategies sustain microbial diversity in Antarctic desert soils

Arid

DOI	10.1073/pnas.2025322118
	Multiple energy sources and metabolic strategies sustain microbial diversity in Antarctic desert soils
	Ortiz, Maximiliano; Leung, Pok Man; Shelley, Guy; Jirapanjawat, Thanavit; Nauer, Philipp A.; Van Goethem, Marc W.; Bay, Sean K.; Islam, Zahra F.; Jordaan, Karen; Vikram, Surendra; Chown, Steven L.; Hogg, Ian D.; Makhalanyane, Thulani P.; Grinter, Rhys; Cowan, Don A.; Greening, Chris
通讯作者	Cowan, DA (corresponding author), Univ Pretoria, Ctr Microbial Ecol & Genom, Dept Biochem Genet & Microbiol, ZA-0002 Pretoria, South Africa. ; Leung, PM ; Greening, C (corresponding author), Monash Biomed Discovery Inst, Dept Microbiol, Clayton, Vic 3800, Australia. ; Greening, C (corresponding author), Monash Univ, Sch Biol Sci, Clayton, Vic 3800, Australia.
来源期刊	PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN	0027-8424
出版年	2021
卷号	118 期号:45
英文摘要	Numerous diverse microorganisms reside in the cold desert soils of continental Antarctica, though we lack a holistic understanding of the metabolic processes that sustain them. Here, we profile the composition, capabilities, and activities of the microbial communities in 16 physicochemically diverse mountainous and glacial soils. We assembled 451 metagenome-assembled genomes from 18 microbial phyla and inferred through Bayesian divergence analysis that the dominant lineages present are likely native to Antarctica. In support of earlier findings, metagenomic analysis revealed that the most abundant and prevalent microorganisms are metabolically versatile aerobes that use atmospheric hydrogen to support aerobic respiration and sometimes carbon fixation. Surprisingly, however, hydrogen oxidation in this region was catalyzed primarily by a phylogenetically and structurally distinct enzyme, the group 1l [NiFe]-hydrogenase, encoded by nine bacterial phyla. Through gas chromatography, we provide evidence that both Antarctic soil communities and an axenic Bacteroidota isolate (Hymenobacter roseosalivarius) oxidize atmospheric hydrogen using this enzyme. Based on ex situ rates at environmentally representative temperatures, hydrogen oxidation is theoretically sufficient for soil communities to meet energy requirements and, through metabolic water production, sustain hydration. Diverse carbon monoxide oxidizers and abundant methanotrophs were also active in the soils. We also recovered genomes of microorganisms capable of oxidizing edaphic inorganic nitrogen, sulfur, and iron compounds and harvesting solar energy via microbial rhodopsins and conventional photosystems. Obligately symbiotic bacteria, including Patescibacteria, Chlamydiae, and predatory Bdellovibrionota, were also present. We conclude that microbial diversity in Antarctic soils reflects the coexistence of metabolically flexible mixotrophs with metabolically constrained specialists.
英文关键词	Antarctica actinobacteria trace gas metabolic water hydrogen
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000720926900016
WOS关键词	SOR RONDANE MOUNTAINS ; 16S RIBOSOMAL-RNA ; HIGH-AFFINITY ; BACTERIAL DIVERSITY ; DRY VALLEYS ; H-2 ; MAINTENANCE ; WIDESPREAD ; ECOLOGY ; ICE
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/373842
作者单位	[Ortiz, Maximiliano; Van Goethem, Marc W.; Jordaan, Karen; Vikram, Surendra; Hogg, Ian D.; Makhalanyane, Thulani P.; Cowan, Don A.] Univ Pretoria, Ctr Microbial Ecol & Genom, Dept Biochem Genet & Microbiol, ZA-0002 Pretoria, South Africa; [Leung, Pok Man; Jirapanjawat, Thanavit; Bay, Sean K.; Islam, Zahra F.; Grinter, Rhys; Greening, Chris] Monash Biomed Discovery Inst, Dept Microbiol, Clayton, Vic 3800, Australia; [Shelley, Guy; Bay, Sean K.; Islam, Zahra F.; Greening, Chris] Monash Univ, Sch Biol Sci, Clayton, Vic 3800, Australia; [Nauer, Philipp A.] Monash Univ, Sch Chem, Clayton, Vic 3800, Australia; [Van Goethem, Marc W.] Lawrence Berkeley Natl Lab, Environm Genom & Syst Biol Div, Berkeley, CA 94720 USA; [Jordaan, Karen] Pontificia Univ Catolica Chile, Fac Ciencias Biol, Dept Genet Mol & Microbiol, Santiago 8331150, Chile; [Chown, Steven L.] Monash Univ, Sch Biol Sci, Securing Antarct Environm Future, Clayton, Vic 3800, Australia; [Hogg, Ian D.] Univ Waikato, Sch Sci, Hamilton 3240, New Zealand; [Hog...
推荐引用方式 GB/T 7714	Ortiz, Maximiliano,Leung, Pok Man,Shelley, Guy,et al. Multiple energy sources and metabolic strategies sustain microbial diversity in Antarctic desert soils[J],2021,118(45).
APA	Ortiz, Maximiliano.,Leung, Pok Man.,Shelley, Guy.,Jirapanjawat, Thanavit.,Nauer, Philipp A..,...&Greening, Chris.(2021).Multiple energy sources and metabolic strategies sustain microbial diversity in Antarctic desert soils.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,118(45).
MLA	Ortiz, Maximiliano,et al."Multiple energy sources and metabolic strategies sustain microbial diversity in Antarctic desert soils".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 118.45(2021).