Dataset Information

Osmotic stress in Listeria monocytogenes serotype 4b strain F2365 grown in BHI medium and BHI medium with 1.2% NaCl

ABSTRACT: Gene expression profiles of L. monocytogenes strain F2365 to osmotic stress was examined. Based on a log2 scale, four and 24 genes were upregulated and downregulated by the stress, respectively.The expression level of ATP-binding cassette superfamily and ribosomal protein L2 genes were increased, whereas genes associated with PTS system, its metabolic enzymes, pathogenesis, and hypothetical protein were downregulated.

ORGANISM(S): Listeria monocytogenes

PROVIDER: GSE19570 | GEO | 2010/01/15

SECONDARY ACCESSION(S): PRJNA122461

REPOSITORIES: GEO

ACCESS DATA

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Project description:Arbuscular mycorrhizal (AM) symbiosis can enhance plant resistance to NaCl stress in several ways. Two fundamental roles involve osmotic and ionic adjustment. By stimulating accumulation of solutes, the symbiosis can help plants sustain optimal water balance and diminish Na(+) toxicity. The size of the AM effect on osmolytes has varied widely and is unpredictable. We conducted a meta-analysis to determine the size of the AM effect on 22 plant solute characteristics after exposure to NaCl and to examine how experimental conditions have influenced the AM effect. Viewed across studies, AM symbioses have had marked effects on plant K(+), increasing root and shoot K(+) concentrations by an average of 47 and 42%, respectively, and root and shoot K(+)/Na(+) ratios by 47 and 58%, respectively. Among organic solutes, soluble carbohydrates have been most impacted, with AM-induced increases of 28 and 19% in shoots and roots. The symbiosis has had no consistent effect on several characteristics, including root glycine betaine concentration, root or shoot Cl(-) concentrations, leaf Ψπ, or shoot proline or polyamine concentrations. The AM effect has been very small for shoot Ca(++) concentration and root concentrations of Na(+), Mg(++) and proline. Interpretations about AM-conferred benefits regarding these compounds may be best gauged within the context of the individual studies. Shoot and root K(+)/Na(+) ratios and root proline concentration showed significant between-study heterogeneity, and we examined nine moderator variables to explore what might explain the differences in mycorrhizal effects on these parameters. Moderators with significant impacts included AM taxa, host type, presence or absence of AM growth promotion, stress severity, and whether NaCl constituted part or all of the experimental saline stress treatment. Meta-regression of shoot K(+)/Na(+) ratio showed a positive response to root colonization, and root K(+)/Na(+) ratio a negative response to time of exposure to NaCl.

Dataset Information

Osmotic stress in Listeria monocytogenes serotype 4b strain F2365 grown in BHI medium and BHI medium with 1.2% NaCl

Dataset's files

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets