کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2091025 1081528 2008 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A novel retrieval system for nearly complete microbial genomic fragments from soil samples
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی بیوتکنولوژی یا زیست‌فناوری
پیش نمایش صفحه اول مقاله
A novel retrieval system for nearly complete microbial genomic fragments from soil samples
چکیده انگلیسی
The construction of a complex genomic library is one of the comprehensive ways to study a complex bacterial community and to access the variety of metabolic pathways present in the rich soil environment. In this report, we developed a new protocol whereby we are able to retrieve nearly complete microbe genomic fragments from soil samples, which are employed to generate a metagenomic library for visualizing the basic scaffolding of the soil microbial community. The use of direct cell lysis within soil-embedded agarose plugs, along with a double-size selection, enabled us to successfully isolate pure and high-molecular weight DNA (0.1-1 Mb) without the need for any further purification. A metagenomic library containing 1.2 Gbp of DNA in total was constructed. Furthermore, analysis of the microbial community structure using 16S rDNA partial sequences found the dominant phylotypes to consist of α-Proteobacteria and Actinobacteria, which are similar to those seen in forest and agricultural soils, and numerous uncultured microbes from a wide variety of bacterial taxa as well. In conclusion, this study presents a novel protocol for generating a metagenomic library that carries much larger and diverse DNA fragments from soil bacteria that will be applied for the reconstruction of soil microbial genomes and the discovery of novel habitat-specific pathways.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Microbiological Methods - Volume 72, Issue 2, February 2008, Pages 197-205
نویسندگان
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