role of phosphates in the aluminium detoxification mechanism of Pseudomonas fluorescens

  • 30 Pages
  • 1.52 MB
  • English
Laurentian University , Sudbury, Ont
StatementMichel Bidal.
The Physical Object
Pagination30 l. :
ID Numbers
Open LibraryOL22161716M

The data in the present report show that the mechanisms evoked to circumvent abnormal lev- els on aluminum by Pseudomonas fluorescens is dependent on the phosphate concentration of the medium.

In medium with mM phosphate, aluminum was detoxified as soluble component(s) localized in the by: Influence of phosphate on aluminum tolerance in Pseudomonas fluorescens. The soil microbe Pseudomonas fluorescens has been shown to detoxify aluminum by the elaboration of a soluble metabolite where the trivalent metal is sequestered [Appanna andFEMS Microbiol.

Lett. 24 () –]. The inclusion of 5 mM iron in the growth medium elicited an entirely disparate detoxification by:   Mechanism of insoluble phosphate solubilization by Pseudomonas fluorescens RAF15 isolated from ginseng rhizosphere and its plant growth-promoting activities.

Park KH, Lee CY, Son HJ. Lett Appl Microbiol, 49(2), 22 May Cited by 20 articles | PMID: Cited by: 4. Aluminum detoxication mechanism in Pseudomonas fluorescens is dependent on iron Article in FEMS Microbiology Letters (2‐3) - January with 27 Reads How we measure 'reads'.

The foregoing data show that Al-loaded P. fluorescens secretes the trivalent metal upon incubation with a carbon source such as citrate, Al-citrate or oxalate.

The Al is associated predominantly with PE and oxalate. The NMR data point to a pivotal role for oxalate in the detoxification of Al and reveal the transformation of citrate or Al-citrate to this dicarboxylic acid via the oxidation of.

Aims: To evaluate the effect of tetradecyltrimethylammonium bromide (TTAB) and aluminium stresses on the phospholipid (PL) composition of Pseudomonas putida A ATCC Methods and Results: Pseudomonas putida were grown with TTAB in the presence or absence of AlCl 3, and the PL composition was presence of TTAB resulted in an increase in phosphatidylglycerol and.

Aluminum detoxification. mechanism in Pseudomonas fluorescens is dependent on. Bacteria play a key role in the planetary carbon cycle partly because they rapidly assimilate labile dissolved. Environmental pollution implies any alteration in the surroundings but it is restricted in use especially to mean any deterioration in the physical, chemical, and biological quality of the environment.

Details role of phosphates in the aluminium detoxification mechanism of Pseudomonas fluorescens FB2

All types of pollution, directly or indirectly, affect human health. Present scenario of pollution calls for immediate attention towards the remediation and detoxification of these hazardous. Phosphorus is the second most critical macronutrient after nitrogen required for metabolism, growth, and development of plants.

Despite the abundance of phosphorus in both organic and inorganic forms in the soil, it is mostly unavailable for plant uptake due to its complexation with metal ions in the soil. The use of agrochemicals to satisfy the demand for phosphorus to improve crop yield.

Abstract. Pseudomonas fluorescens was found to grow in a mineral medium supplemented with up to 50 mM aluminum, complexed to citrate, the sole source of carbon. At stationary phase while virtually no diminution in cellular yield was observed in the presence of mM aluminum, only 31% of bacterial yield was recorded in media with 50 mM aluminum.

An aluminum-sensitive mutant was isolated by chemical mutagenesis using 1-methylnitronitrosoguanidine. Although this mutant of Pseudomonas fluorescens was susceptible to aluminum, it did respond in a manner analogous to the wild-type when challenged with either Ca 2+, or Ga 3+ or Zn 2+.However, the aluminum-sensitive mutant did not grow in media with iron.

Abstract. Pseudomonas fluorescens and Rhizobium showed similar responses to Al in defined medium. Evidence that DNA is a site of action of Al in Rhizobium, and for mutagenic effects of Al in laboratory media, is inary data are presented which indicate that Al tolerance is not a plasmid-borne trait in these bacteria.

Request PDF | Bioaccumulation of yttrium in Pseudomonas fluorescens and the role of the outer membrane component(s) | Pseudomonas fluorescens was grown in millimolar amounts of.

The microbe circumvents the inhibitory characteristic of aluminum by depositing the metal as an insoluble residue rich in phosphate and phosphatidylethanolamine (PE). The phospholipid appears to play a pivotal role in the secretion of the metal.

Role of lipids in the aluminum detoxification mechanism of scens. Bélanger Role of phosphate in the aluminum detoxification mechanism in scens.

Anderson Role of phosphate in the calcium detoxificants mechanism of scens. Detoxification and Bioremediation Potential of a Pseudomonas fluorescens Isolate against the Major Indian Water Pollutants February Journal of Environmental Science and Health Part A 41(4) Pseudomonas fluorescens ATCC was found to grow in a minimal mineral medium supplemented with millimolar amounts of aluminum, a known environmental toxicant.

During the stationary phase of growth, the trivalent metal was localized in a phosphatidylethanolamine (PE)-containing residue. E-Mail Address. Password. Forgotten Password. Remember Me. Phosphorus solubilizing bacteria play role in phosphorus nutrition by enhancing its availability to plants through release from inorganic and organic soil P pools by solubilization and mineralization.

Overexpression of isocitrate lyase is an important strategy in the survival of Pseudomonas fluorescens exposed to aluminum. Biochem. Biophys. Res. Comm. pdf. V.D. Appanna and R.D.

Hamel () Aluminum detoxification in Pseudomonas fluorescens is mediated by oxalate and phosphatidylethanolamine. Biochim. Biophys. Abstract. Pseudomonas fluorescens appeared to circumvent the challenge imposed by millimolar amounts of metals (5 mM Al3+, 5 mM Fe3+, 2 mM Ca2+, 1 mM Ga3+ and.

Phosphorus is normally lacking in most characteristic soils since it is settled as insoluble iron and aluminum phosphates in acidic soils or calcium phosphates in soluble soils.

Phosphate-solubilizing bacteria (PSB) as inoculants have the ability to convert insoluble forms of phosphorus to an usable form for high plant yields. The Role of Phosphates in Cleaners. Zeolites are principle builders that are artificial and insoluble compounds that are based on aluminum and silicate.

They are known to increase soil suspension as well as increase sludge volumes in sewage treatment, which makes disposal much more difficult. Zeolites are usually found in powdered cleaners. Abstract. The role of α-ketoglutarate (KG) in the detoxification of reactive oxygen species (ROS) has only recently begun to be appreciated.

Description role of phosphates in the aluminium detoxification mechanism of Pseudomonas fluorescens FB2

This ketoacid neutralizes ROS in an NADPH-independent manner with the concomitant formation of succinate and CO further probe this intriguing attribute of KG in living systems, we have evaluated the significance of histidine metabolism in the model.

Aluminum detoxification mechanism in Pseudomonas fluorescens is dependent on iron Aluminum tolerance in Pseudomonas fluorescens ATCC Involvement of a gelatinous lipid-rich residue The antibacterial activity of haemin compared with cobalt, zinc and magnesium protoporphyrin and its effect on pottassium loss and ultrastructure of.

Aims. To identify the molecular networks in P seudomonas fluorescens that convey resistance to toxic concentrations of Z n, a common pollutant and hazard to biological systems.

Methods and Results. Pseudomonas fluorescens strain ATCC was cultured in growth medium with millimolar concentrations of Z n. Enzymatic activities and metabolite levels were monitored with the.

Oxidative stress is an unavoidable peril that aerobic organisms have to confront. Thus, it is not surprising that intricate strategies are deployed in an effort to fend the dangers associated with living in an O2 environment.

In the classical models of anti-oxidative defense mechanisms, a variety of stratagems including the reactive oxygen species (ROS) scavenging systems, the NADPH-generating.

Read "Physiological role of phosphatidylcholine in the Pseudomonas putida A ATCC response to tetradecyltrimethylammonium bromide and aluminium, Letters in Applied Microbiology" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

Phosphate has been shown to influence the mechanisms of aluminum tolerance in Pseudomonas fluorescens grown with aluminum-complexed citrate as a sole carbon source. In a phosphate-rich medium, P. fluorescens deposited aluminum in an insoluble extracellular residue composed partly of phosphatidylethanolamine (Appanna and St.

Pierre, ). In this study, aluminum (Al) and gallium (Ga), two Fe mimetics, severely impeded the ability of the soil microbe Pseudomonas fluorescensto perform oxidative phosphorylation.

This was achieved by disrupting the activity and expression of complexes I, II, and IV.A biologically pure phosphate solubilizing plant growth promoting rhizobacteria (PGPR) XSB was isolated from canola rhizosphere and identified as Bacillus firmus is provided herein. The PGPR is capable to solubilize phosphate that enhance plant available phosphorous.

The PGPR XSB enhances seed germination, early emergence, plant vigor, root and shoot growth, and higher crop yield.

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Pseudomonas is a widespread bacterial genus embracing a vast number of species. Various genosystematic methods are used to identify Pseudomonas and differentiate these bacteria from species of the same genus and species of other genera.

Ability to degrade and produce a whole spectrum of compounds makes these species perspective in industrial applications. It also makes .