Availability of iron to Pseudomonas fluorescens in rhizosphere and bulk soil evaluated with an ice nucleation reporter gene
Article Abstract:
Soil pH is the main factor determining the iron-availability for Pseudomonas fluorescens Pf-5, indicated by the activity of an ice nucleation reporter gene (inaZ). High activity of the gene (INA) indicates low iron availability. The INA activity is lower in soils with a pH of 5.4 as compared to soils with higher pH. The INA activity is high immediately after P. fluorescens is innoculated onto root surfaces and later decreases. This indicates an initial low iron availability that later increases.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1997
User Contributions:
Comment about this article or add new information about this topic:
Reciprocal regulation of pyoluteorin production with membrane transporter gene expression in Pseudomonas fluorescens Pf-5
Article Abstract:
A cluster of genes linked to the pyoluteorin biosynthetic gene cluster whose nucleotide sequences are similar to those of ATP-binding cassette (ABC) export proteins, a class of ATP-powered, multisubunit membrane transporters is reported. Evidence is provided for a coordination of production and the transcription of genes encoding a linked transport apparatus, wherein each requires the other for optimal expression.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 2005
User Contributions:
Comment about this article or add new information about this topic:
Positive autoregulation and signaling properties of pyoluteorin, an antibiotic produced by the biological control organism Pseudomonas fluorescens Pf-5
Article Abstract:
Evidence that the regulatory circuit governing pyoluteorin production includes positive autoregulation, is presented. The most familiar example of positive autoregulation is that of N-acyl homoserine lactones.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 2004
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Influence of earthworm activity on gene transfer from Pseudomonas fluorescens to indigenous soil bacteria. Presence of culturable bacteria in cocoons of the earthworm Eisenia fetida
- Abstracts: Silencing of human polycomb target genes is associated with methylation of histone H3 Lys 27. A silencing pathway to induce H3-K9 and H4-K20 trimethylation at constitutive heterochromatin
- Abstracts: Role of spontaneous current oscillations during high-efficiency electrotransformation of thermophilic anaerobes
- Abstracts: Comparison of prevalence and antimicrobial susceptibilities of Campylobacter spp. isolates from organic and conventional dairy herds in Wisconsin
- Abstracts: Salinity responses of benthic microbial communities in a solar saltern (Eilat, Israel). Novel sulfonolipid in the extremely halophilic bacterium Salinibacter ruber