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Cellular life from the three domains and viruses are transcriptionally active in a hypersaline deser...

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Record title

Cellular life from the three domains and viruses are transcriptionally active in a hypersaline desert community

Record identifier

TN_cdi_proquest_journals_2313812655

Cellular life from the three domains and viruses are transcriptionally active in a hypersaline desert community

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https://collection.sl.nsw.gov.au/record/TN_cdi_proquest_journals_2313812655

Cellular life from the three domains and viruses are transcriptionally active in a hypersaline desert community

Full title

Cellular life from the three domains and viruses are transcriptionally active in a hypersaline desert community

Publisher

Cold Spring Harbor: Cold Spring Harbor Laboratory Press

Journal title

BioRxiv, 2019

Record Identifier

TN_cdi_proquest_journals_2313812655

Language

English

Formats

Publication information

Publisher

Cold Spring Harbor: Cold Spring Harbor Laboratory Press

More information

SCOPE AND CONTENTS

Contents

Microbial communities play essential roles in the biosphere and understanding the mechanisms underlying their functional adaptations to environmental conditions is critical for predicting their behavior. This aspect of microbiome function has not been well characterized in natural high-salt environments. To address this knowledge gap, and to build a general framework of relating the genomic and transcriptomic components in a microbiome, we performed a meta-omic survey of extremophile communities inhabiting halite (salt) nodules in the Atacama Desert. We found that the major phyla of this halophilic community have very different levels of total transcriptional activity and that different metabolic pathways were activated in their transcriptomes. We report that a novel Dolichomastix alga - the only eukaryote found in this system - was by far the most active community member. It produced the vast majority of the community's photosynthetic transcripts despite being outnumbered by members of the Cyanobacteria. The divergence in the transcriptional landscapes of these segregated communities, compared to the relatively stable metagenomic functional potential, suggests that microbiomes in each salt nodule undergo unique transcriptional adjustments to adapt to local conditions. We also report the characterization of several previously unknown halophilic viruses, many of which exhibit transcriptional activity indicative of host infection. Footnotes * https://github.com/ursky/metatranscriptome_paper...

ALTERNATIVE TITLES

Full title

Cellular life from the three domains and viruses are transcriptionally active in a hypersaline desert community

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PRIMARY IDENTIFIERS

Record Identifier

TN_cdi_proquest_journals_2313812655

Permalink

https://collection.sl.nsw.gov.au/record/TN_cdi_proquest_journals_2313812655

OTHER IDENTIFIERS

DOI

10.1101/839134

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