GEO DataSets

(Submitter supplied) A conserved regulatory pathway directs developmental transitions and asymmetries in Agrobacterium tumefaciens. Core components of this coordination of division and development (CDD) pathway include two integrated phosphorelays. One of these phosphorelays includes at least four histidine sensor kinase homologues, DivJ, PleC, PdhS1, and PdhS2, and at least two response regulators, DivK and PleD. Previously we demonstrated that PdhS2 reciprocally regulates biofilm formation and swimming motility. more...

Organism:

Agrobacterium tumefaciens

Type:

Expression profiling by array

Platform:

GPL18993

3 Samples

Download data: GPR, PDF, XLSX

(Submitter supplied) Many bacteria colonize surfaces and transition to a sessile mode of growth. The plant pathogen Agrobacterium tumefaciens produces a unipolar polysaccharide (UPP) adhesin at single cell poles that contact surfaces. Here we report that elevated levels of the intracellular signal cyclic diguanosine monophosphate (c-di-GMP) lead to surface-contact-independent UPP production and a red colony phenotype due to production of UPP and the exopolysaccharide cellulose, when A. more...

Organism:

Agrobacterium tumefaciens

Type:

Expression profiling by array

Platform:

GPL18993

3 Samples

Download data: GPR, TXT

(Submitter supplied) In the model organism Caulobacter crescentus, a network of two-component systems involving the response regulators CtrA, DivK and PleD coordinate cell cycle progression with differentiation. Active phosphorylated CtrA prevents chromosome replication in G1 cells while simultaneously regulating expression of genes required for morphogenesis and development. At the G1-S transition, phosphorylated DivK (DivK~P) and PleD (PleD~P) accumulate to indirectly inactivate CtrA, which triggers DNA replication initiation and concomitant cellular differentiation. more...

Organism:

Caulobacter vibrioides

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL22063

3 Samples

Download data: XLSX

(Submitter supplied) The plant pathogen Agrobacterium tumefaciens attaches to and forms biofilms on both biotic and abiotic surfaces. The transition between free-living, planktonic A. tumefaciens and multicellular biofilms is regulated by several well-defined environmental and nutritional inputs, including pH, oxygen tension, and phosphate concentration. In many bacterial species limiting iron levels inhibit attachment and biofilm formation. more...

Organism:

Agrobacterium tumefaciens

Type:

Expression profiling by array

Platform:

GPL18993

4 Samples

Download data: GPR, PDF, XLSX

(Submitter supplied) The plant pathogen Agrobacterium tumefaciens attaches to and forms biofilms on both biotic and abiotic surfaces. The transition between free-living, planktonic A. tumefaciens and multicellular biofilms is regulated by several well-defined environmental and nutritional inputs, including pH, oxygen tension, and phosphate concentration. In many bacterial species limiting iron levels inhibit attachment and biofilm formation. more...

Organism:

Agrobacterium tumefaciens

Type:

Expression profiling by array

Platform:

GPL18993

4 Samples

Download data: GPR, XLS

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Agrobacterium tumefaciens

Type:

Expression profiling by array

Platform:

GPL18993

7 Samples

Download data: GPR

(Submitter supplied) Agrobacterium tumefaciens is a facultative plant pathogen and the causative agent of crown gall disease. The initial stage of infection involves attachment to plant tissues and, subsequently, biofilms may form at these sites. This study focuses on the periplasmic ExoR regulator, which was identified based on the severe biofilm deficiency of A. tumefaciens exoR mutants. Genome-wide expression analysis was performed to elucidate the complete ExoR regulon. more...

Organism:

Agrobacterium tumefaciens

Type:

Expression profiling by array

Platform:

GPL18993

3 Samples

Download data: GPR, TXT, XLS

(Submitter supplied) Agrobacterium tumefaciens is a facultative plant pathogen and the causative agent of crown gall disease. The initial stage of infection involves attachment to plant tissues and, subsequently, biofilms may form at these sites. This study focuses on the periplasmic ExoR regulator, which was identified based on the severe biofilm deficiency of A. tumefaciens exoR mutants. Genome-wide expression analysis was performed to elucidate the complete ExoR regulon. more...

Organism:

Agrobacterium tumefaciens

Type:

Expression profiling by array

Platform:

GPL18993

4 Samples

Download data: GPR, TXT, XLS

(Submitter supplied) Bacteria are extremely versatile organisms which rapidly adapt to changing environments. When Escherichia coli cells switch from planktonic growth to biofilm, flagellum formation is turned off, and the production of fimbriae and extracellular polysaccharides is switched on. Here we show that BolA protein is a new bacterial transcription factor which modulates the switch from planktonic to sessile lifestyle. more...

Organism:

Escherichia coli str. K-12 substr. MG1655; Escherichia coli

Type:

Expression profiling by array

Platform:

GPL3154

12 Samples

Download data: CEL

(Submitter supplied) Alphaproteobacteria stand out for their complex cell cycles, which are often regulated by the DivJ/PleC-DivK-DivL-CckA-ChpT-CtrA pathway. DivJ and PleC set up the polarity of the cell, thereby eventually leading to differential activation of the DNA-binding response regulator CtrA in the two nascent daughter cells. CtrA regulates replication and transcription of many genes, thereby ensuring that processes such as motility and cell division take place at the appropriate cell cycle stage. more...

Organism:

Hyphomonas neptunium

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL26030

4 Samples

Download data: XLS

(Submitter supplied) Performed RNASeq analysis comparing A. tumefaciens C58 (fabrum) harboring a plasmid driving ectopic expression of mirA regulator gene (ATU_RS08050) from Plac promoter with the isogenic strain haboring the same plasmid with no mirA (Vector control)

Organism:

Agrobacterium fabrum str. C58

Type:

Expression profiling by high throughput sequencing

Platform:

GPL30075

6 Samples

Download data: TXT

(Submitter supplied) Rugose V. cholerae cells with an in-frame deletion of vpsT (VCA0952) were used in this study. Cells containing pBAD-Myc/His-B vector, or the vector containing a wild-type copy of vpsT, or vpsT with point mutations M17D, D60A, R134A, or I141E were grown to exponential phase and expression profiles compared.

Organism:

Vibrio cholerae

Type:

Expression profiling by array

Platform:

GPL5747

6 Samples

Download data: GPR

(Submitter supplied) We investigated the role of the LysR-type transcriptional regulator VtlR/LsrB (Atu2186) from Agrobacterium tumefaciens C58 (alias A. fabrum C58), which regulates the expression of small-regulatory-RNA (sRNA) genes such as AbcR1 and the expression of genes encoding small proteins with a domain of unknown function DUF1127. For this purpose, we constructed a vtlR/lsrB deletion mutant. Total RNA was isolated from this mutant as well as from an AbcR1 deletion mutant (Wilms et al., 2011) at optical densities (OD) of 0.5 or 0.5 and 1.5, respectively. more...

Organism:

Agrobacterium fabrum str. C58

Type:

Expression profiling by high throughput sequencing

Platform:

GPL28562

9 Samples

Download data: CSV

(Submitter supplied) Purpose: The goals of this study is to compare the reponse of Agrobacterium tumefaciens C58 in the presence and absence of the two opines nopaline and agrocinopine (more precisely agrocinopine A) to delineated the key-genes associated to opines-response in A. tumefaciens C58.

Organism:

Agrobacterium tumefaciens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24197

6 Samples

Download data: TXT