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Sinorhizobium meliloti BL225C

ABSTRACT: Sinorhizobium meliloti BL225C genome sequencing project

PROVIDER: PRJNA42477 | ENA |

REPOSITORIES: ENA

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			Action	DRS
		Other
	SRR058927.fastq.gz	Fastqsanger.gz
	SRR058928.fastq.gz	Fastqsanger.gz
	SRR058929.fastq.gz	Fastqsanger.gz
	SRR060185.fastq.gz	Fastqsanger.gz

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Single-cell RNA sequencing of Medicago truncatula roots after exposure to Ensifer meliloti (formerly Sinorhizobium meliloti)

Project description:Single-cell RNA sequencing of Medicago truncatula roots was generated from nuclei using the 10X Genomics' Chromium technology. Roots were harvested and processed 24h after exposure to Ensifer meliloti (formerly Sinorhizobium meliloti).

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Expression analysis of Sinorhizobium meliloti 1021rpoH1 rpoH2 mutant during heat shock

Project description:Investigation of whole genome gene expression level changes in a Sinorhizobium meliloti 1021 rpoH1 rpoH2 double mutant, compared to the wild-type strain. The mutations engineered into this strain render it deficient in symbiotic nitrogen fixation. The mutants analyzed in this study are further described in Mitsui, H, T. Sato, Y. Sato, and K. Minamisawa. 2004. Sinorhizobium meliloti RpoH1 is required for effective nitrogen-fixing symbiosis with alfalfa. Mol Gen Genomics 271:416-425.

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Project description:Sinorhizobium meliloti lives as a soil saprophyte, and engages in a nitrogen fixing symbiosis with plant roots. To succeed in such diverse environments, the bacteria must continually adjust gene expression. Transcriptional plasticity in eubacteria is often mediated by alternative sigma factors interacting with core RNA polymerase. The S. meliloti genome encodes 14 of these alternative sigmas, including 11 extracytoplasmic function (ECF) sigmas. We used custom Affymetrix Symbiosis Chips to characterize the global transcriptional response of S. meliloti overexpressing the ECF sigma factor, RpoE2. Our work identifies over 200 genes whose expression is dependent on RpoE2.

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Project description:Sinorhizobium meliloti can live as a soil saprophyte, and can engage in a nitrogen fixing symbiosis with plant roots. To succeed in such diverse environments, the bacteria must continually adjust gene expression. Transcriptional plasticity in eubacteria is often mediated by alternative sigma factors interacting with core RNA polymerase. The S. meliloti genome encodes 14 of these alternative sigmas, including two putative RpoH (heat shock) sigmas. We used custom Affymetrix Symbiosis Chips to characterize the global transcriptional response of S. meliloti rpoH1, rpoH2 and rpoH1 rpoH2 mutants during heat shock and stationary phase growth. Under these conditions, expression of over 300 genes is dependent on rpoH1 and rpoH2.

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