Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1271711 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR33821054.fastq.gz | Fastqsanger.gz | |||
| SRR33821055.fastq.gz | Fastqsanger.gz | |||
| SRR33821056.fastq.gz | Fastqsanger.gz | |||
| SRR33821057.fastq.gz | Fastqsanger.gz | |||
| SRR33821058.fastq.gz | Fastqsanger.gz |
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Project description:To gain improved temporal, spatial and phylogenetic resolution of marine microbial communities, in this study we expanded the original prototype genome proxy array (an oligonucleotide microarray targeting marine microbial genome fragments and genomes), evaluated it against metagenomic sequencing, and applied it to time series samples from the Monterey Bay long term ecological research site. The expanded array targeted 268 microbial genotypes (vs. 14 in the original prototype) across much of the known diversity of cultured and uncultured marine microbes. The target abundances measured by the genome proxy array were highly correlated to pyrosequence-based abundances (linear regression R2 = 0.85-0.91, p<0.0001). Fifty-seven samples from ~4-years in Monterey Bay were examined with the array, spanning the photic zone (0m), the base of the surface mixed layer (30m), and the subphotic zone (200m). 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The array provided cost-effective (~$15 per array, for construction and use) insights into the natural history of uncultivated lineages in the wild. To gain improved temporal, spatial and phylogenetic resolution of marine microbial communities, in this study we expanded the original prototype genome proxy array (an oligonucleotide microarray targeting marine microbial genome fragments and genomes), evaluated it against metagenomic sequencing, and applied it to time series samples from the Monterey Bay long term ecological research site. The expanded array targeted 268 microbial genotypes (vs. 14 in the original prototype) across much of the known diversity of cultured and uncultured marine microbes. The target abundances measured by the genome proxy array were highly correlated to pyrosequence-based abundances (linear regression R2 = 0.85-0.91, p<0.0001). 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Although 51 cultivated organisms were targeted (representing 19% of the array) the majority of targets detected and of total target signal (85% and ~92%, respectively) were from uncultivated lineages, often those derived from Monterey Bay. The array provided cost-effective (~$15 per array, for construction and use) insights into the natural history of uncultivated lineages in the wild. The expanded genome proxy array was designed as in (Rich et al., 2008). Briefly, each genotype was targeted using suites of ~20 70-mer oligonucleotide probes designed using the program ArrayOligoSelector (Zhu et al., 2003). Probes had approximately the same %GC (40%) and were distributed across the target genome or genome fragment, with no more than one probe per gene and avoiding 16S and 23S rRNA genes. The array included positive and negative control probes designed using the same method, to Halobacterium salinarum NRC-1 and a random genome sequence, respectively. 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