Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR12524490.fastq.gz | Fastqsanger.gz | |||
| SRR12524491.fastq.gz | Fastqsanger.gz | |||
| SRR12524492.fastq.gz | Fastqsanger.gz | |||
| SRR12524493.fastq.gz | Fastqsanger.gz |
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Project description:Transcriptome from a planktonic Radiolaria-Dinophyta system
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Project description:<p>Marine planktonic Radiolaria harboring symbiotic microalgae are ubiquitous in the oceans and abundant in oligotrophic areas. In these low-nutrient environments, they are among the most important primary producers. Systematic studies of radiolarian biology are limited because radiolaria are non-culturable and prone to damage during sampling. To obtain insight into the mechanistic basis of radiolarian photosymbiosis,we address here the metabolic contributions ofthe partners to the performance ofthe holobiont. Therefore, we describe the metabolic inventory of two highly abundant photosymbiotic radiolaria—colony-forming Collodaria and single-celled Acantharia and compare their metabolomes to metabolomes of respective free-living algae. Most of the metabolites detected in the symbiosis are not present in the free-living algae, suggesting a significant transformation of symbionts’ metabolites by the host. The metabolites identified in the holobiont and the free-living algae encompass molecules of primary metabolism and a number of osmolytes, including dimethylsulfoniopropionate. Mass spectrometry imaging revealed the presence of dimethylsulfoniopropionate in the symbionts and host cells, indicating that the algae provide osmolytic protection to the host. Furthermore, our findings suggest a possible dependence of Collodaria on symbiotic vitamin B3. Distinctive differences in phospholipid composition between free-living and symbiotic stages indicate that the algal cell membrane may undergo rearrangement in the symbiosis. Our results demonstrate a strong interdependence and rewiring of the algal metabolism underlying radiolaria-microalgae photosymbioses.</p>
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Project description:A comparative genomic approach was used to identify large sequence polymorphisms among Mycobacterium avium isolates obtained from a variety of host species. DNA microarrays were used as a platform for comparing mycobacteria field isolates with the sequenced bovine isolate Mycobacterium avium subsp. paratuberculosis (Map) K10. ORFs were classified as present or divergent based on the relative fluorescent intensities of the experimental samples compared to Map K10 DNA. Map isolates cultured from cattle, bison, sheep, goat, avian, and human sources were hybridized to the Map microarray. Three large deletions were observed in the genomes of four Map isolates obtained from sheep and four clusters of ORFs homologous to sequences in the Mycobacterium avium subsp. avium (Maa) 104 genome were identified as being present in these isolates. One of these clusters encodes glycopeptidolipid biosynthesis enzymes. One of the Map sheep isolates had a genome profile similar to a group of Mycobacterium avium subsp. silvaticum (Mas) isolates which included four independent laboratory stocks of the organism traditionally identified as Maa strain 18. Genome diversity in Map appears to be mostly restricted to large sequence polymorphisms that are often associated with mobile genetic elements. Keywords: Comparative genomic hybridization
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Project description:Using comparative genomic hybridization we examined the genome content of 30 isolates of E. coli and Shigella to determine the relative location of E. coli isolates from the human neobladder
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