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Sphingomonas sp. ATCC 31555

ABSTRACT: Organic Nitrogen Source is Critical for Welan Production in Sphingomonas sp. ATCC 31555

PROVIDER: PRJNA316326 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR3291180_1.fastq.gz	Fastqsanger.gz
	SRR3291180_2.fastq.gz	Fastqsanger.gz
	SRR3291178_1.fastq.gz	Fastqsanger.gz
	SRR3291178_2.fastq.gz	Fastqsanger.gz
	SRR3291179_1.fastq.gz	Fastqsanger.gz

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Organic Nitrogen Source is Critical for Welan Production in Sphingomonas sp. ATCC 31555

2016-03-25 | GSE79497 | GEO

Organic Nitrogen Source is Critical for Welan Production in Sphingomonas sp. ATCC 31555

Project description:Welan gum is mainly produced by Sphingomonas sp. ATCC 31555 and has broad applications in industry such as that in cement production. Both carbon and nitrogen sources are essential for welan production. However, how nitrogen sources affect the metabolism and gene transcription of welan remains elusive. Here, we used next-generation sequencing RNA-seq to analyze the transcriptome of Sphingomonas sp. ATCC 31555 in the presence of inorganic or organic nitrogen sources. Enriched gene expression and pathway analysis suggest that organic nitrogen sources significantly enhanced the expression of genes in central metabolic pathways of Sphingomonas sp. ATCC 31555 and those critical for welan synthesis compared to that observed using inorganic nitrogen sources. The present study improves our understanding of the molecular mechanism underlying the use of nitrogen in welan synthesis in Sphingomonas sp., as well as provides an important transcriptome resource for Sphingomonas sp. in relation to nitrogen sources. Sphingomonas sp. ATCC 31555 strain (stored in our laboratory) was first seeded in an inoculum medium (20 g/L glucose, 3 g/L yeast extract, 3 g/L malt extract, and 5 g/L fish meal protein peptone, pH 7.0), and then cultured in a fermentation medium containing 40 g/L sucrose, 4.0 g/L nitrogen source, 0.6 g/L KH2PO4, and 0.2 g/L MgSO4.7H2O at 37Â°C. The nitrogen sources used in the present study were as follows: NaNO3 (4.0 g/L) as inorganic nitrogen (IN), beef extract (4.0 g/L) as organic nitrogen (ON), and NaNO3 (1.5 g/L) + beef extract (2.5 g/L) as complex nitrogen (CN). All cultivations were conducted in flasks with constant rotary shaking at 400â??1,000 rpm and 37Â°C.

2016-03-25 | E-GEOD-79497 | biostudies-arrayexpress

Expression analysis of motile strain of Sphingomonas sp. A1

Project description:Investigation of whole genome gene expression level in motile strain of Sphingomonas. sp A1 All flagellar genes in motile strain of Sphingomonas. sp A1 are highly transcribed.

2014-11-01 | GSE62901 | GEO

Expression analysis of motile strain of Sphingomonas sp. A1

Project description:Investigation of whole genome gene expression level in motile strain of Sphingomonas. sp A1 All flagellar genes in motile strain of Sphingomonas. sp A1 are highly transcribed. A two chip study using total RNA recovered from wild-type and motile strains of Sphingomonas. sp A1 grown in 0.5% alginate medium.

2014-11-01 | E-GEOD-62901 | biostudies-arrayexpress

Analysis of Curdlan Production in Agrobacterium sp. ATCC 31749

Project description:Gene Expression Analysis of Curdlan Production in Agrobacterium sp. ATCC 31749

2012-01-15 | GSE32576 | GEO

Sphingomonas sp. ATCC 31555

Project description:Sphingomonas sp. ATCC 31555 Genome sequencing and assembly

| PRJNA170137 | ENA

Coupling of cellular processes and their coordinated oscillations under continuous light in cyanothece sp. ATCC 51142, a diazotrophic unicellular cyanobacteria

Project description:Transcriptional profiling of a unicelluar diazotrophic cyanobacterium Cyanothece sp. ATCC 51142 in constant light under nitrogen fixing condition. The controls comprised of equimolar pool of RNA from all time points.

2015-02-03 | GSE65429 | GEO

Expression analysis of Sphingomonas. sp A1 AlgO-deficient mutant grown in 0.5% alginate medium or 0.5% yeast extract medium

Project description:Investigation of whole genome gene expression level changes in Sphingomonas. sp A1 AlgO-deficient mutant grown on alginate compared with that on yeast extract AlgO is a possble transcriptional factor described in J. Bacteriol. (2000) 182(14):3998-4004 by Momma K, Okamoto M, Mishima Y, Mori S, Hashimoto W, and Murata K. A two chip study using total RNA recovered from two cultures of Sphingomonas. sp A1 AlgO-deficient mutant grown in 0.5% alginate medium and 0.5% yeast extract medium. Each chip measures the expression level of genes from Sphingomonas. sp A1.

2014-01-28 | E-GEOD-54410 | biostudies-arrayexpress

Expression analysis of Sphingomonas paucimobilis sp. EPA505 during biodegradation kinetics of various PAHs and detection of gene in a contaminated soil S3

Project description:Studying eight enzymes involved in the degradation of polycyclic aromatic hydrocarbons from the model strain Sphingomonas paucimobilis sp. EPA505 using a designed microarray of 8,048 probes. During the biodegradation kinetics with phenanthrene, fluoranthene or a mix of both pollutants, we identified the targeted set of genes induced by these pollutants, compared to basal expression detected with glucose. Hybridizing total DNA extracted from S3, we show the efficiency of our probe design to study a complex environment. Despite the relative small size of our probes (23-mers), their sensitivity is reliable as we can detect the presence of genes in this complex mixture. Obtained results are further described in Sébastien Terrat, Eric Peyretaillade, Olivier Gonçalves, Eric Dugat-Bony, Fabrice Gravelat, and Pierre Peyret. 2010 - Studying the ‘Unkown’ with Metabolic Design, a new probe design software for explorative functional microarrays development. Nucleic Acids Research (submited). A 17 chip study was realized using total RNA recovered from separate cultures of Sphingomonas paucimobilis sp. EPA505 with phenanthrene, fluoranthene or a mix of these both pollutants as sole carbon and energy source. A negative kinetic expermient was realized with glucose as sole carbon and energy source. Each chip measures the expression level of 8 genes from Sphingomonas paucimobilis sp. EPA505 with 23-mer probes (a total of 8,048 probes) using a new design approach. We also assess metabolic capacities of microbial communities in an aromatic hydrocarbons contaminated soil named S3. Each probe was spotted in triplicate, and a total of 8,863 random probes was used to determine the background noise.

2010-10-01 | E-GEOD-21402 | biostudies-arrayexpress

Biofilms of the PAH-degrading Sphingomonas sp. LH128 on solute stress when actively degrading and growing on phenanthrene

Project description:This study examines the transcriptomic response of biofilms of the PAH-degrading Sphingomonas sp. LH128 on solute stress when actively degrading and growing on the PAH compound. To address the effect of solute stress on bacterial physiology and transcriptomic response, NaCl was used as osmolyte. Both acute and chronic solute stress was invoked to assess differences in short-term and long-term responses. Transcriptomic response of phenanthrene degrading Sphingomonas sp. LH128 biofilms as a response to short-term and long-term solute (NaCl) stress was studied using genome-wide gene expression analysis. For this purpose, the strain was grown in customized continuous glass flow chambers that contain solid phenanthrene as a sole carbon source and that allow easy recovery of biofilm cells for transcriptomic and physiological analysis. A NaCl stress of 450 mM was imposed on LH128 biofilms growing on phenanthrene crystals coated on glass slides either for 4 hours (acute stress) or for 3 days (chronic stress). RNA was extracted from the biofilm and cDNA was synthesized and labeled with Cy3. Transcriptomic response in the stressed biofilms of three replicates per conditions were analyzed and compared with non-stressed

2012-06-18 | E-GEOD-38296 | biostudies-arrayexpress

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