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Old 04-02-2010, 02:00 AM   #1
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Default PubMed: Ecogenomics: using massively parallel pyrosequencing to understand virus ecol

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Ecogenomics: using massively parallel pyrosequencing to understand virus ecology.

Mol Ecol. 2010 Mar;19 Suppl 1:81-8

Authors: Roossinck MJ, Saha P, Wiley GB, Quan J, White JD, Lai H, Chavarría F, Shen G, Roe BA

Environmental samples have been analysed for viruses in metagenomic studies, but these studies have not linked individual viruses to their hosts. We designed a strategy to isolate double-stranded RNA, a hallmark of RNA virus infection, from individual plants and convert this to cDNA with a unique four nucleotide Tag at each end. Using 96 different Tags allowed us to pool samples and still retain the link to the original sample. We then analysed the sequence of pooled samples using massively parallel sequencing with Roche 454 pyrosequencing such that 384 samples could be assessed per picotiter plate. Using this method we have been able to analyse thousands of plants, and we have discovered several thousand new plant viruses, all linked to their specific plant hosts. Here we describe the method in detail, including the results and analysis for eight pools of samples. This technology will be extremely useful in understanding the full scope of plant virus biodiversity.

PMID: 20331772 [PubMed - in process]



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