Pseudomonas putida KT2440
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA682829 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR13206000_1.fastq.gz | Fastqsanger.gz | |||
| SRR13206000_2.fastq.gz | Fastqsanger.gz | |||
| SRR13206001_1.fastq.gz | Fastqsanger.gz | |||
| SRR13206001_2.fastq.gz | Fastqsanger.gz | |||
| SRR13206002_1.fastq.gz | Fastqsanger.gz |
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Project description:KaiC is the central cog of the circadian clock in Cyanobacteria. Close homologs of this protein are widespread among bacteria not known to have a circadian physiology. The function, interaction network, and mechanism of action of these KaiC homologs are still largely unknown. Here, we focus on KaiC homologs found in environmental Pseudomonas species. We characterize experimentally the only KaiC homolog present in Pseudomonas putida KT2440 and Pseudomonas protegens CHA0. Through phenotypic assays and transcriptomics, we show that KaiC is involved in osmotic and oxidative stress resistance in P. putida and in biofilm production in both P. putida and P. protegens.
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Project description:The bacterium Pseudomonas putida KT2440 has the ability to reduce selenite forming nanoparticles of elemental selenium. This is the transcriptome of the organism when cultured in the presence of selenite.
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Project description:To know whether the microarray technique could be used to detect bacterial gene expression in soil, large quantity of RNA was extracted from soil cultures of Pseudomonas putida KT2440 containing a chloroaromatic degrading plasmid at the presence or absence of the growth substrate, 3-chlorobenzoate (3CB). The quality and quantity of the extracted RNA were proper for a typical microarray analysis. Gene expression patterns of soil cultures were analyzed by DNA microarray using the extracted RNA. Among 5346 genes on the array, 5% and 4.5% of genes showed up- or down-regulation. Analysis done at the DAVID Bioinformatics Resources server suggested that the benzoate degradation via hydroxylation pathway had the most significant changes after treatment with 3CB. Expression of the 3CB degradation genes located in the genome was confirmed by real-time RT-PCR. In addition, real time RT-PCR analysis revealed that the fluorescent signals from plasmid genes on the microarray were saturated so that the induction ratio of the genes located in the plasmid was underestimated in microarray analysis. To our best knowledge, this report represents the first trial to use microarray technique to detect genome-wide bacterial gene expression in soil. A study using total RNA extracted from soil cultures of Pseudomonas putida KT2440/pSL1. Each chip measures the expression level of 5,341 genes from Pseudomonas putida KT2440 genome and 5 genes from an introduced plasmid pSL1 with fourteen 60-mer probes per gene which have five-fold technical redundancy.
2010-04-01 | E-GEOD-19516 | biostudies-arrayexpress
Project description:Transcriptome of the wildtype or evolved Pseudomonas putida KT2440
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Project description:Gene expression patterns of the plant colonizing bacterium,Pseudomonas putida KT2440 were evaluated as a function of growth in the Arabidopsis thaliana rhizosphere. Gene expression in rhizosphere grown P. putida cells was compared to gene expression in non-rhizosphere grown cells. Keywords: Gene expression
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Project description:Pseudomonas putida KT2440 is a metabolically versatile soil bacterium useful both as a model biodegradative organism and as a host of catalytic activities of biotechnological interest. In this report, we present the high-resolution transcriptome of P. putida grown in different carbon sources as revealed by deep sequencing of the corresponding RNA pools. Examination of the data from growth on glycolytic (glucose, fructose) and gluconeogenic (succinate or glycerol) substrates revealed that > 20% of the P. putida genome is differentially expressed depending on the ensuing metabolic regime. Changes affected not only metabolic genes but also a suite of global regulators, e.g. the rpoS sigma subunit of RNAP, various cold-shock proteins and the three HU histone-like proteins. Specifically, the genes encoding HU subunit variants hupA, hupB and hupN drastically altered their expression levels (and thus their ability to form heterodimeric combinations) under the different growth conditions. Furthermore, we found that the two small RNAs crcZ and crcY, known to inhibit the Crc protein that mediates catabolite repression in P. putida, were both down-regulated by glucose.
2013-07-23 | GSE46491 | GEO
Project description:Pseudomonas putida KT2440 is a metabolically versatile soil bacterium useful both as a model biodegradative organism and as a host of catalytic activities of biotechnological interest. In this report, we present the high-resolution transcriptome of P. putida grown in different carbon sources as revealed by deep sequencing of the corresponding RNA pools. Examination of the data from growth on glycolytic (glucose, fructose) and gluconeogenic (succinate or glycerol) substrates revealed that > 20% of the P. putida genome is differentially expressed depending on the ensuing metabolic regime. Changes affected not only metabolic genes but also a suite of global regulators, e.g. the rpoS sigma subunit of RNAP, various cold-shock proteins and the three HU histone-like proteins. Specifically, the genes encoding HU subunit variants hupA, hupB and hupN drastically altered their expression levels (and thus their ability to form heterodimeric combinations) under the different growth conditions. Furthermore, we found that the two small RNAs crcZ and crcY, known to inhibit the Crc protein that mediates catabolite repression in P. putida, were both down-regulated by glucose. cDNA libraries from Pseudomonas supplemented with different carbon sources (glucose, glycerol, fructose, succinate) were sequenced using HiSeq 2000 to yield 91 paired-end reads. Gene expression values were compared.
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Project description:We analyzed gene expression during conjugative transfer of plasmid RP4. Pairs of rifampicin-susceptible (RifS) and -resistance (RifR) strains of Pseudomonas putida KT2440 were conjugated for 10 minute on filter membrane in the presence of rifampicin to discriminate the expression changes in the donor and recipient cells.
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Project description:Transcriptome profiling of Pseudomonas putida KT2440 comparing cells exposed for 1 hour to DIMBOA from maize (Zea mays) to unexposed cells
2012-07-09 | GSE36489 | GEO
Project description:Pseudomonas putida KT2440 encodes 3 homologs of the LitR/CarH family (designated PplR1–PplR3; Pseudomonas putida light-induced transcription; regulator), which is an adenosyl B12-dependent light-sensitive MerR family transcriptional regulator. Transcriptome and individual transcriptional analysis revealed the existence of a number of photo-inducible genes including pplR1, phrB (encoding DNA photolyase), cfaA (cyclopropane synthase), folE (GTP cyclohydrolase I), cryB (cryptochrome-like protein), and multiple hypothetical genes. Transcriptional analysis based on a β-galactosidase reporter assay with single-, double-, and triple-knockout mutants of pplR1–pplR3 showed that deletion of pplR1–pplR3 completely abolished the light-inducible transcription in P. putida, which indicates that the transcription of light-inducible genes is under the ternary regulation of PplR proteins. DNase I footprint assay showed that PplR1 protein specifically binds to the promoter regions of light-inducible genes, suggesting a consensus PplR1-binding site, 5’-T(G/A)TACAn12TGTA(C/T)A-3’, predicted upon nucleotide sequence alignment. The disruption of cobalamin biosynthesis cluster did not affect the light-inducible transcription; however, disruption of ppSB1-LOV and ppSB2-LOV, a blue light photoreceptor genes, which are adjacent to pplR3 and pplR2, respectively, led to the complete loss of light-inducible transcription. Overall, the results suggest that 3 PplR and 2 PpSB-LOV regulate light-induced gene transcription in response to illumination. The high conservation of the pplR/ppSB-LOV cognate pair in Pseudomonas spp. suggests that the response and adaptation to light is similarly regulated in the group of non-phototrophic bacteria.
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