Adhesion of <i>Pseudomonas putida</i> onto Palygorskite and Sepiolite Clay Minerals

Tavanaee, Marzieh; Shirvani, Mehran; Bakhtiary, Somayeh

doi:10.1080/01490451.2016.1238982

Cited by 11 publications

(4 citation statements)

References 57 publications

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“…Some phyllosilicates showed a remarkable capability of catalysis of biomolecules and condensation, organization of biopolymers and even cells (Heinz, 2012; Tavanaee et al ., 2017; Pietrement et al ., 2018). Within this kind of studies, scanning probe microscopy (SPM) methods provide unique information and a clear picture at the micro and nanoscale of the system under consideration showing features related to the adsorption process and conformation of the objects onto the surface (Moro et al ., 2015; Math et al ., 2019; Zhai et al ., 2019), even in the case of particular, complex‐to‐treat and tricky specimens, such as single biomolecule behaviour.…”

Section: Introductionmentioning

confidence: 99%

Nano‐atomic scale hydrophobic/philic confinement of peptides on mineral surfaces by cross‐correlated SPM and quantum mechanical DFT analysis

Moro

Ulian

Valdrè

2020

Journal of Microscopy

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The fundamental knowledge of the interaction between biomolecules and mineral surfaces is of utmost importance to drive new technological advancements, particularly for condensation, aggregation, catalysis and exchange of biomolecules. The mineral surface can be used in several fields and applications, for instance in biotechnology, environmental science and remediation, soil science, agro-food and related technology. This kind of knowledge may also provide several suggestions and have implications also for the prebiotic chemistry field, namely the study of the abiotic physicochemical steps that could have led to the 'creation' of the first known living organism. Nowadays, this kind of information at the micro and nanometric scale can be explored with several experimental and theoretical techniques and, among them, atomic force microscopy (AFM)-related methods and density functional theory (DFT) are particularly suited to investigate adsorption processes at single molecule level. In the present work, the specific interaction at the atomic scale between a small peptide (di-glycine) and the (001) surface of clinochlore, a mineral presenting alternately stacked talc-like layers (hydrophilic) and brucite-like sheets (hydrophobic), was characterized by means of a cross-correlated approach combining AFM and DFT simulations. The experiments evidenced the preferential adsorption of di-glycine onto the hydrophobic brucite-like sheet of the mineral, with the observed molecules organized as dot-like (single-molecules), agglomerates, filament-like and network structures by the surface, whereas only very few peptides were imaged onto the hydrophilic talc-like layer. From the theoretical analysis, the most stable conformation of the

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Section: Introductionmentioning

confidence: 99%

Nano‐atomic scale hydrophobic/philic confinement of peptides on mineral surfaces by cross‐correlated SPM and quantum mechanical DFT analysis

Moro

Ulian

Valdrè

2020

Journal of Microscopy

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“…Lavie and Stotzky[203] reported that kaolinite, montmorillonite and polygorskite reduced the rate of respiration of Histoplasma capsulatum, through mechanisms of adhesion with mycelial surface which interfere with the movement of nutrients, metabolites, and gases across the mycelia wall. Details of the different mechanisms of bacterial adhesion by clay minerals have been reported in other studies[206] [207][208] [209] Savage. Most recently, it has been demonstrated that structural Fe (II) from the reduction of Fe (III) in clay minerals (such as nontronite) appears to be the primary source of •OH radical, which causes the death of some microorganisms.…”

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confidence: 99%

Influence of Clay Minerals on Some Soil Fertility Attributes: A Review

Kome¹,

Enang²,

Tabi³

et al. 2019

OJSS

127

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Clay minerals constitute an important component of the soil system and knowledge of their role in soil fertility is imperative for sustainable soil management and productivity. The aim of this work is to overview the influence of clay minerals on some major soil fertility attributes. The rationale for carrying out this work is that most soil fertility studies rarely incorporate soil mineralogy. Clay minerals, through their physical and chemical properties, affect soil fertility by controlling nutrient supplies and availability, through the sequestration and stabilization of soil organic matter, by controlling soil physical properties through microaggregate formation, by influencing soil acidity and controlling soil microbial population and activity. The main processes involved in these relationships are dissolution-precipitation and adsorption-desorption processes, alongside mechanisms involving the formation of short-range-ordered phases. Although the determination of soil mineralogical properties is very costly and time-consuming, information about a soil's mineralogy is imperative for a holistic understanding and proper management of soil fertility. Therefore, the development of rapid, low-cost, reliable and efficient techniques of soil mineralogical analysis, directly applicable to soil fertility investigations, constitutes a major challenge. Also, future research should investigate the relationships between clay minerals and soil nitrogen vis-à-vis sequestration and stabilization. Lastly, clay minerals should be considered in studies dealing with soil quality assessment, especially in the choice of soil quality indicators.

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“…Incubations were performed at 37°C and 100 rev min À1 for 30 min in 25-ml Erlenmeyer flasks containing 9 ml of bacterial cell suspension, and either 1 g of a product or 1 ml of the same buffer were used in the experimental and control groups, respectively. A 30-min period was previously reported as the equilibrium time for adhesion of P. putida to clay minerals (Tavanaee et al, 2017). Before and after incubations, 1 : 10 serial dilutions of the aqueous phase were made, plated on LB agar and colony forming units (CFU) were counted using UVP Colony Imaging Station (Analytik Jena).…”

Section: Experimental Set-upmentioning

confidence: 99%

Efficient removal of bacteria from aqueous media with kaolinite and diatomaceous earth products

Johnson

Brineman

Schultze

et al. 2020

Journal of Applied Microbiology

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Aims: To understand the relationships between physical and chemical parameters of kaolinite and diatomaceous earth, and their capacities to remove bacteria from aqueous media. To determine the optimal aqueous media parameters for use of these products in water disinfection processes. Methods and Results: Seven kaolinite and three diatomaceous earth products were evaluated. Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus and Bacillus megaterium were used as proxy for bacterial pathogens. Fully calcined kaolin and amorphous diatomaceous earth demonstrated the highest extent and consistency in removing all the bacteria. The removal depended on ionic strength and pH of aqueous media with 100 mmol l À1 pH 5 potassium hydrogen phthalate buffer revealing the highest (2 log per gram) extent of the removal. Al 3+ cations enhanced sorption up to 4 log per gram. Conclusions: Calcined kaolin and amorphous diatomaceous earth are excellent sorbents for bacteria. Significance and Impact of the Study: Fully calcined kaolin and amorphous diatomaceous earth are perspective tools for wastewater and water disinfection against waterborne bacterial pathogens.

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Adhesion of Pseudomonas putida onto Palygorskite and Sepiolite Clay Minerals

Cited by 11 publications

References 57 publications

Nano‐atomic scale hydrophobic/philic confinement of peptides on mineral surfaces by cross‐correlated SPM and quantum mechanical DFT analysis

Nano‐atomic scale hydrophobic/philic confinement of peptides on mineral surfaces by cross‐correlated SPM and quantum mechanical DFT analysis

Influence of Clay Minerals on Some Soil Fertility Attributes: A Review

Efficient removal of bacteria from aqueous media with kaolinite and diatomaceous earth products

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