Transcriptome-stable isotope probing provides targeted functional and taxonomic insights into microaerobic pollutant-degrading aquifer microbiota.
Front. Microbiol. 9:2696 (2018)
While most studies using RNA-stable isotope probing (SIP) to date have focused on ribosomal RNA, the detection of C-labeled mRNA has rarely been demonstrated. This approach could alleviate some of the major caveats of current non-target environmental "omics." Here, we demonstrate the feasibility of total RNA-SIP in an experiment where hydrocarbon-degrading microbes from a BTEX-contaminated aquifer were studied in microcosms with C-labeled toluene under microoxic conditions. From the total sequencing reads (∼30 mio. reads per density-resolved RNA fraction), an average of 1.2% of reads per sample were identified as non-rRNA, including mRNA. Members of the (including those related to spp.) were most abundant and enriched in C-rRNA, while well-known aerobic degraders such as spp. remained unlabeled. Transcripts related to cell motility, secondary metabolite formation and xenobiotics degradation were highly labeled with C. mRNA of phenol hydroxylase genes were highly labeled and abundant, while other transcripts of toluene-activation were not detected. Clear labeling of catechol 2,3-dioxygenase transcripts supported previous findings that some of these extradiol dioxygenases were adapted to low oxygen concentrations. We introduce a novel combination of total RNA-SIP with calculation of transcript-specific enrichment factors (EFs) in C-RNA, enabling a targeted approach to process-relevant gene expression in complex microbiomes.
Impact Factor
Scopus SNIP
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Times Cited
Scopus
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Typ der Hochschulschrift
Herausgeber
Schlagwörter
Rna-sip ; Rna-seq ; Dioxygenases ; Groundwater ; Hydrocarbon Degradation ; Metatranscriptomics; Ribosomal-rna; Contaminated Site; Escherichia-coli; Gene-expression; Sp Nov.; Catechol 2,3-dioxygenase; Groundwater; Diversity; Toluene; Community
Keywords plus
Sprache
Veröffentlichungsjahr
2018
Prepublished im Jahr
HGF-Berichtsjahr
2018
ISSN (print) / ISBN
1664-302X
e-ISSN
1664-302X
ISBN
Bandtitel
Konferenztitel
Konferzenzdatum
Konferenzort
Konferenzband
Quellenangaben
Band: 9,
Heft: ,
Seiten: ,
Artikelnummer: 2696
Supplement: ,
Reihe
Verlag
Frontiers
Verlagsort
Avenue Du Tribunal Federal 34, Lausanne, Ch-1015, Switzerland
Tag d. mündl. Prüfung
0000-00-00
Betreuer
Gutachter
Prüfer
Topic
Hochschule
Hochschulort
Fakultät
Veröffentlichungsdatum
0000-00-00
Anmeldedatum
0000-00-00
Anmelder/Inhaber
weitere Inhaber
Anmeldeland
Priorität
Begutachtungsstatus
Peer reviewed
POF Topic(s)
20403 - Sustainable Water Management
30202 - Environmental Health
Forschungsfeld(er)
Environmental Sciences
PSP-Element(e)
G-504300-005
G-504700-001
Förderungen
Copyright
Erfassungsdatum
2018-12-05