Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1093/gbe/evw189 |
Comparative Metagenomic Analysis Reveals Mechanisms for Stress Response in Hypoliths from Extreme Hyperarid Deserts | |
Phuong Thi Le1,2,3; Makhalanyane, Thulani P.1; Guerrero, Leandro D.1; Vikram, Surendra1; Van de Peer, Yves1,2,3,4; Cowan, Don A.1 | |
通讯作者 | Van de Peer, Yves ; Cowan, Don A. |
来源期刊 | GENOME BIOLOGY AND EVOLUTION
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ISSN | 1759-6653 |
出版年 | 2016 |
卷号 | 8期号:9页码:2737-2747 |
英文摘要 | Understanding microbial adaptation to environmental stressors is crucial for interpreting broader ecological patterns. In the most extreme hot and cold deserts, cryptic niche communities are thought to play key roles in ecosystem processes and represent excellent model systems for investigating microbial responses to environmental stressors. However, relatively little is known about the genetic diversity underlying such functional processes in climatically extreme desert systems. This study presents the first comparative metagenome analysis of cyanobacteria-dominated hypolithic communities in hot (Namib Desert, Namibia) and cold (Miers Valley, Antarctica) hyperarid deserts. The most abundant phyla in both hypolith metagenomes were Actinobacteria, Proteobacteria, Cyanobacteria and Bacteroidetes with Cyanobacteria dominating in Antarctic hypoliths. However, no significant differences between the two metagenomes were identified. The Antarctic hypolithic metagenome displayed a high number of sequences assigned to sigma factors, replication, recombination and repair, translation, ribosomal structure, and biogenesis. In contrast, the Namib Desert metagenome showed a high abundance of sequences assigned to carbohydrate transport and metabolism. Metagenome data analysis also revealed significant divergence in the genetic determinants of amino acid and nucleotide metabolism between these two metagenomes and those of soil from other polar deserts, hot deserts, and non-desert soils. Our results suggest extensive niche differentiation in hypolithic microbial communities from these two extreme environments and a high genetic capacity for survival under environmental extremes. |
英文关键词 | stress response deserts comparative metagenomics Antarctica Namib Desert hypoliths soils biomes |
类型 | Article |
语种 | 英语 |
国家 | South Africa ; Belgium |
收录类别 | SCI-E |
WOS记录号 | WOS:000384307900008 |
WOS关键词 | SOIL MICROBIAL COMMUNITIES ; ANTARCTIC DRY VALLEY ; ROSS SEA REGION ; CLIMATE-CHANGE ; NAMIB DESERT ; ENVIRONMENTAL GRADIENTS ; BACTERIAL COMMUNITIES ; ECOSYSTEM FUNCTION ; BACILLUS-SUBTILIS ; ORTHOLOG GROUPS |
WOS类目 | Evolutionary Biology ; Genetics & Heredity |
WOS研究方向 | Evolutionary Biology ; Genetics & Heredity |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/193148 |
作者单位 | 1.Univ Pretoria, Dept Genet, CMEG, Pretoria, South Africa; 2.VIB, Dept Plant Syst Biol, Ghent, Belgium; 3.Univ Ghent, Dept Plant Biotechnol & Bioinformat, Ghent, Belgium; 4.Univ Ghent, Bioinformat Inst Ghent, Technol Pk 927, Ghent, Belgium |
推荐引用方式 GB/T 7714 | Phuong Thi Le,Makhalanyane, Thulani P.,Guerrero, Leandro D.,et al. Comparative Metagenomic Analysis Reveals Mechanisms for Stress Response in Hypoliths from Extreme Hyperarid Deserts[J],2016,8(9):2737-2747. |
APA | Phuong Thi Le,Makhalanyane, Thulani P.,Guerrero, Leandro D.,Vikram, Surendra,Van de Peer, Yves,&Cowan, Don A..(2016).Comparative Metagenomic Analysis Reveals Mechanisms for Stress Response in Hypoliths from Extreme Hyperarid Deserts.GENOME BIOLOGY AND EVOLUTION,8(9),2737-2747. |
MLA | Phuong Thi Le,et al."Comparative Metagenomic Analysis Reveals Mechanisms for Stress Response in Hypoliths from Extreme Hyperarid Deserts".GENOME BIOLOGY AND EVOLUTION 8.9(2016):2737-2747. |
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