Arid
DOI10.1007/s00792-005-0444-5
A diversity of bacteriophage forms and genomes can be isolated from the surface sands of the Sahara Desert
Prigent, M; Leroy, M; Confalonieri, F; Dutertre, M; DuBow, MS
通讯作者DuBow, MS
来源期刊EXTREMOPHILES
ISSN1431-0651
EISSN1433-4909
出版年2005
卷号9期号:4页码:289-296
英文摘要

The surface sands of the Sahara Desert are exposed to extremes of ultraviolet light irradiation, desiccation and temperature variation. Nonetheless, the presence of bacteria has recently been demonstrated in this environment by cultivation methods and by 16S rDNA analyses from total DNA isolated from surface sands. To discern the presence of bacteriophages in this harsh environment, we searched for extracellular phages and intracellularly located phages present as prophages or within pseudolysogens. Mild sonication of the sand, in different liquid culture media, incubated with and without Mitomycin-C, was followed by differential centrifugation to enrich for dsDNA phages. The resulting preparations, examined by electron microscopy, revealed the presence of virus-like particles with a diversity of morphotypes representative of all three major double-stranded DNA bacteriophage families (Myoviridae, Siphoviridae and Podoviridae). Moreover, pulsed-field gel electrophoresis of DNA, extracted from the enriched bacteriophage preparations, revealed the presence of distinct bands suggesting the presence of putative dsDNA phage genomes ranging in size from 45 kb to 270 kb. Characterization of the bacteriophages present in the surface sands of the Sahara Desert extends the range of environments from which bacteriophages can be isolated, and provides an important point of departure for the study of phages in extreme terrestrial environments.


英文关键词bacteriophages electron microscopy biodiversity phage morphology Sahara Desert sand
类型Article
语种英语
国家France
收录类别SCI-E
WOS记录号WOS:000231020800004
WOS关键词PSEUDOMONAS-AERUGINOSA ; MARINE-ENVIRONMENT ; VIRUSES ; COMMUNITY ; DYNAMICS ; SOIL ; MICROORGANISMS ; MORTALITY ; LYSOGENY ; BIOFILMS
WOS类目Biochemistry & Molecular Biology ; Microbiology
WOS研究方向Biochemistry & Molecular Biology ; Microbiology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/148987
作者单位(1)Univ Paris 11, Inst Genet & Microbiol, CNRS, UMR 8621, F-91405 Orsay, France
推荐引用方式
GB/T 7714
Prigent, M,Leroy, M,Confalonieri, F,et al. A diversity of bacteriophage forms and genomes can be isolated from the surface sands of the Sahara Desert[J],2005,9(4):289-296.
APA Prigent, M,Leroy, M,Confalonieri, F,Dutertre, M,&DuBow, MS.(2005).A diversity of bacteriophage forms and genomes can be isolated from the surface sands of the Sahara Desert.EXTREMOPHILES,9(4),289-296.
MLA Prigent, M,et al."A diversity of bacteriophage forms and genomes can be isolated from the surface sands of the Sahara Desert".EXTREMOPHILES 9.4(2005):289-296.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Prigent, M]的文章
[Leroy, M]的文章
[Confalonieri, F]的文章
百度学术
百度学术中相似的文章
[Prigent, M]的文章
[Leroy, M]的文章
[Confalonieri, F]的文章
必应学术
必应学术中相似的文章
[Prigent, M]的文章
[Leroy, M]的文章
[Confalonieri, F]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。