Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3389/fmicb.2017.01435 |
Microbial Community Structure and the Persistence of Cyanobacterial Populations in Salt Crusts of the Hyperarid Atacama Desert from Genome-Resolved Metagenomics | |
Finstad, Kari M.1,5; Probst, Alexander J.2; Thomas, Brian C.2; Andersen, Gary L.1,3; Demergasso, Cecilia4; Echeverria, Alex4; Amundson, Ronald G.1; Banfield, Jillian F.1,2 | |
通讯作者 | Banfield, Jillian F. |
来源期刊 | FRONTIERS IN MICROBIOLOGY
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ISSN | 1664-302X |
出版年 | 2017 |
卷号 | 8 |
英文摘要 | Although once thought to be devoid of biology, recent studies have identified salt deposits as oases for life in the hyperarid Atacama Desert. To examine spatial patterns of microbial species and key nutrient sources, we genomically characterized 26 salt crusts from three sites along a fog gradient. The communities are dominated by a large variety of Halobacteriales and Bacteroidetes, plus a few algal and Cyanobacterial species. CRISPR locus analysis suggests the distribution of a single Cyanobacterial population among all sites. This is in stark contrast to the extremely high sample specificity of most other community members. Only present at the highest moisture site is a genomically characterized Thermoplasmatales archaeon (Marine Group II) and six Nanohaloarchaea, one of which is represented by a complete genome. Parcubacteria (OD1) and Saccharibacteria (TM7), not previously reported from hypersaline environments, were found at low abundances. We found no indication of a N-2 fixation pathway in the communities, suggesting acquisition of bioavailable nitrogen from atmospherically derived nitrate. Samples cluster by site based on bacterial and archaeal abundance patterns and photosynthetic capacity decreases with increasing distance from the ocean. We conclude that moisture level, controlled by coastal fog intensity, is the strongest driver of community membership. |
英文关键词 | metagenome Atacama Desert salt crust hyperarid hypersaline environmental genomics salar |
类型 | Article |
语种 | 英语 |
国家 | USA ; Chile |
收录类别 | SCI-E |
WOS记录号 | WOS:000406463100001 |
WOS关键词 | CHILE ; LIFE ; ENVIRONMENTS ; COLONIZATION ; BACTERIA ; VIRUSES ; ARCHAEA ; SHIFTS ; HOT |
WOS类目 | Microbiology |
WOS研究方向 | Microbiology |
来源机构 | University of California, Berkeley |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/199054 |
作者单位 | 1.Univ Calif Berkeley, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA; 2.Univ Calif Berkeley, Dept Earth & Planetary Sci, Berkeley, CA 94720 USA; 3.Lawrence Berkeley Natl Lab, Earth Sci Div, Ecol Dept, Berkeley, CA USA; 4.Univ Catolic Norte, Ctr Biotecnol, Antofagasta, Chile; 5.Lawrence Livermore Natl Lab, Ctr Accelerator Mass Spectrometry, Livermore, CA USA |
推荐引用方式 GB/T 7714 | Finstad, Kari M.,Probst, Alexander J.,Thomas, Brian C.,et al. Microbial Community Structure and the Persistence of Cyanobacterial Populations in Salt Crusts of the Hyperarid Atacama Desert from Genome-Resolved Metagenomics[J]. University of California, Berkeley,2017,8. |
APA | Finstad, Kari M..,Probst, Alexander J..,Thomas, Brian C..,Andersen, Gary L..,Demergasso, Cecilia.,...&Banfield, Jillian F..(2017).Microbial Community Structure and the Persistence of Cyanobacterial Populations in Salt Crusts of the Hyperarid Atacama Desert from Genome-Resolved Metagenomics.FRONTIERS IN MICROBIOLOGY,8. |
MLA | Finstad, Kari M.,et al."Microbial Community Structure and the Persistence of Cyanobacterial Populations in Salt Crusts of the Hyperarid Atacama Desert from Genome-Resolved Metagenomics".FRONTIERS IN MICROBIOLOGY 8(2017). |
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