GEO DataSets

(Submitter supplied) Exploiting the symbiotic interaction between crops and nitrogen-fixing bacteria is a simple and ecological solution to promote plants growth in prospective extraterrestrial human outposts. In this study, we investigated the adaptation of the legume symbiont Paraburkholderia phymatum to simulated microgravity (s0-g) at the transcriptome level by performing an RNA-Seq analysis. The results revealed a drastic effect on gene expression, with roughly 23 % of P. more...

Organism:

Paraburkholderia phymatum STM815

Type:

Expression profiling by high throughput sequencing

Platform:

GPL22728

6 Samples

Download data: TXT

(Submitter supplied) Paraburkholderia phymatum STM815 is a nitrogen-fixing endosymbiont that forms root nodules on the agriculturally important Phaseolus vulgaris and other host plants. We previously showed that the nodules induced by a STM815 mutant of the gene encoding the master regulator of nitrogen fixation NifA showed no nitrogenase activity (Fix-) and increased in number compared to P. vul-garis plants infected with the wild-type strain. more...

Organism:

Paraburkholderia phymatum STM815; Phaseolus vulgaris

Type:

Expression profiling by high throughput sequencing

Platform:

GPL30237

4 Samples

Download data: TXT

(Submitter supplied) Paraburkholderia phymatum is a beta-proteobacterium, which lives in the soil and is able to enter nitrogen-fixing symbiosis with different legumes. The biological nitrogen fixation (BNF) process is of great ecological and agronomic importance. We previously showed that the expression of the key P. phymatum BNF enzyme – the nitrogenase –is regulated by the sigma factor σ54 (or RpoN) inside root nodules. more...

Organism:

Paraburkholderia phymatum STM815

Type:

Expression profiling by high throughput sequencing

Platform:

GPL22728

6 Samples

Download data: TXT

(Submitter supplied) RpoN (σ54) is the key sigma factor for the regulation of transcription of nitrogen fixation genes in diazotrophic bacteria, which include alpha- and beta-rhizobia. Our previous studies showed that a rpoN mutant of the beta-rhizobial strain Paraburkholderia phymatum formed root nodules on Phaseolus vulgaris that were unable to reduce atmospheric nitrogen into ammonia. In an effort to further characterize the RpoN regulon of P. more...

Organism:

Paraburkholderia phymatum STM815

Type:

Expression profiling by high throughput sequencing

Platform:

GPL22728

4 Samples

Download data: TXT

(Submitter supplied) Paraburkholderia phymatum belongs to the β-subclass of proteobacteria. It has recently been shown to be able to nodulate and fix nitrogen in symbiosis with several mimosoid and papillionoid legumes. In contrast to symbiosis of legumes with α-proteobacteria, very little is known about the molecular determinants underlying the successful establishment of this mutualistic relationship with β-proteobacteria. more...

Organism:

Paraburkholderia phymatum STM815

Type:

Expression profiling by high throughput sequencing

Platform:

GPL22728

9 Samples

Download data: TXT