Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1093/femsec/fiw051 |
Characterization of bacterial communities in lithobionts and soil niches from Victoria Valley, Antarctica | |
Van Goethem, Marc W.1; Makhalanyane, Thulani P.1; Valverde, Angel1; Cary, Stephen C.2; Cowan, Don A.1 | |
通讯作者 | Cowan, Don A. |
来源期刊 | FEMS MICROBIOLOGY ECOLOGY
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ISSN | 0168-6496 |
EISSN | 1574-6941 |
出版年 | 2016 |
卷号 | 92期号:4 |
英文摘要 | Here we provide the first exploration of microbial diversity from three distinct Victoria Valley edaphic habitats, namely lithobionts (hypoliths, endoliths) and surface soils. Using a combination of terminal restriction fragment length polymorphism (T-RFLP) analysis and 16S rRNA gene amplicon pyrosequencing we assess community structure and diversity patterns, respectively. Our analysis revealed that habitat type (endolithic versus hypolithic versus surface soils) significantly influenced bacterial community composition, even though dominant phyla such as Actinobacteria (41% of total reads) were common to all samples. Consistent with previous surveys in other Dry Valley ecosystems, we found that lithobionts were colonized by a few highly dominant phylotypes (such as Gemmatimonas and Leptolyngbya). Our analyses also show that soil bacteria were more diverse and evenly distributed than initially expected based on previous evidence. In contrast to total bacteria, the distribution of Cyanobacteria was not strongly influenced by habitat type, although soil-and endolith-specific cyanobacterial lineages were found. The detection of cyanobacterial lineages in these habitats appears to be influenced by the dispersal of aquatic inocula from lacustrine communities or benthic mats which are abundant in Victoria Valley. Together, our results provide insights into the phylogenetic variation and community structure across niche habitats in Victoria Valley. |
英文关键词 | Antarctica bacteria Cyanobacteria endolith hypolith soil |
类型 | Article |
语种 | 英语 |
国家 | South Africa ; New Zealand |
收录类别 | SCI-E |
WOS记录号 | WOS:000374479400016 |
WOS关键词 | MCMURDO DRY VALLEYS ; HYPOLITHIC MICROBIAL COMMUNITIES ; RIBOSOMAL-RNA SEQUENCES ; MIERS VALLEY ; GEN. NOV. ; DIVERSITY ; DESERT ; CYANOBACTERIA ; ECOLOGY ; ROCKS |
WOS类目 | Microbiology |
WOS研究方向 | Microbiology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/192928 |
作者单位 | 1.Univ Pretoria, Dept Genet, Ctr Microbial Ecol & Genom, Lynwood Rd, ZA-0028 Pretoria, South Africa; 2.Univ Waikato, Dept Biol Sci, Private Bag 3105, Hamilton 3120, New Zealand |
推荐引用方式 GB/T 7714 | Van Goethem, Marc W.,Makhalanyane, Thulani P.,Valverde, Angel,et al. Characterization of bacterial communities in lithobionts and soil niches from Victoria Valley, Antarctica[J],2016,92(4). |
APA | Van Goethem, Marc W.,Makhalanyane, Thulani P.,Valverde, Angel,Cary, Stephen C.,&Cowan, Don A..(2016).Characterization of bacterial communities in lithobionts and soil niches from Victoria Valley, Antarctica.FEMS MICROBIOLOGY ECOLOGY,92(4). |
MLA | Van Goethem, Marc W.,et al."Characterization of bacterial communities in lithobionts and soil niches from Victoria Valley, Antarctica".FEMS MICROBIOLOGY ECOLOGY 92.4(2016). |
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