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SRX8423645: GSM4578055: TC01_N3; Serratia sp.; RNA-Seq
1 ILLUMINA (Illumina NovaSeq 6000) run: 11M spots, 3.1G bases, 1.1Gb downloads

Submitted by: NCBI (GEO)
Study: Ambigols from the Cyanobacterium Fischerella ambigua increase Prodigiosin Production in Serratia sp.
show Abstracthide Abstract
Screening a library of 573 cyanobacteria extracts for inhibition of the quorum sensing regulated prodigiosin production of Serratia marcescens, an extract of the cyanobacterium Fischerella ambigua (Näg.) Gomont 108b was found to drastically increase the prodigiosin production. Bioactivity-guided isolation of the active compounds resulted in the two new natural products ambigol D and E along with the known ambigols A and C. Ambigol C treatment increased prodiginine production of Serratia sp. ATCC 39006 (S39006) by a factor of 10, while ambigols A and D were found to have antibiotic activity against this strain. RNA-Seq of S39006 treated with ambigol C and subsequent differential gene expression and functional enrichment analyses indicated a significant downregulation of genes associated with the translation machinery and fatty acid biosynthesis in Serratia, as well as increased expression of genes related to the uptake of l-proline. These results suggest that the ambigols increase the prodiginine production in S39006 not by activating the SmaIR quorum sensing system, but possibly by increasing the precursor supply of l-proline and malonyl-CoA. Overall design: Six samples were analyzed in this study. Two different treatments were utilized with three biological replicates of each. The two treatments included growth of Serratia sp. ATCC 39006 with 15.6 µM ambigol C and with DMSO (solvent control).
Sample: TC01_N3
SAMN15053847 • SRS6735076 • All experiments • All runs
Library:
Instrument: Illumina NovaSeq 6000
Strategy: RNA-Seq
Source: TRANSCRIPTOMIC
Selection: cDNA
Layout: PAIRED
Construction protocol: To analyze the influence of ambigols on the transcriptome of Serratia, six S39006 cultures were grown for 7 h in 6-well microtiter plates. Three cultures were incubated with 15.6 μM ambigol C in DMSO, whereas the other three were incubated with DMSO. 0.1 mL of each culture was mixed with two volumes of RNAprotect Bacteria Reagent (QIAGEN). The RNeasy Mini Kit (QIAGEN) was used for total RNA extraction, using the manufacturer's instructions (protocol 4 from the RNAprotect Bacteria Reagent Handbook), followed with two treatments of DNase (QIAGEN). RNA concentrations and quality were evaluated using an Agilent Bioanalyzer (Agilent Technologies). RNA sequencing was performed at the genomics service company GENEWIZ (Leipzig, Germany). RNA was depleted from rRNA using a NEBNext rRNA Depletion Kit (New England Biolabs GmbH), and a sequencing library was constructed using the NEBNext Ultra II RNA Library Prep Kit (New England Biolabs GmbH).
Experiment attributes:
GEO Accession: GSM4578055
Links:
Runs: 1 run, 11M spots, 3.1G bases, 1.1Gb
Run# of Spots# of BasesSizePublished
SRR1187394110,974,3123.1G1.1Gb2020-11-01

ID:
10955410

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