Chemical characterization and ligand behaviour of Pseudomonas veronii 2E siderophores

Ferreira, María Laura; Ramírez, Silvana A.; Vullo, Diana L.

doi:10.1007/s11274-018-2519-3

Cited by 11 publications

(4 citation statements)

References 66 publications

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“…The intricate role of microbial EPS production in enhancing soil aggregation, particularly under challenging conditions such as salinity and drought, has been well documented [59][60][61]. Recent studies have further underscored the significant biotechnological potential of EPS, highlighting its efficacy in both the sequestration and remediation of heavy metals [50,62,63].…”

Section: Discussionmentioning

confidence: 99%

Beneficial Interactive Effects Provided by an Arbuscular Mycorrhizal Fungi and Yeast on the Growth of Oenothera picensis Established on Cu Mine Tailings

Pérez,

Tapia,

Antilén

et al. 2023

Plants

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Phytoremediation, an environmentally friendly and sustainable approach for addressing Cu-contaminated environments, remains underutilized in mine tailings. Arbuscular mycorrhizal fungi (AMF) play a vital role in reducing Cu levels in plants through various mechanisms, including glomalin stabilization, immobilization within fungal structures, and enhancing plant tolerance to oxidative stress. Yeasts also contribute to plant growth and metal tolerance by producing phytohormones, solubilizing phosphates, generating exopolysaccharides, and facilitating AMF colonization. This study aimed to assess the impact of AMF and yeast inoculation on the growth and antioxidant response of Oenothera picensis plants growing in Cu mine tailings amended with compost. Plants were either non-inoculated (NY) or inoculated with Meyerozyma guilliermondii (MG), Rhodotorula mucilaginosa (RM), or a combination of both (MIX). Plants were also inoculated with Claroideoglomus claroideum (CC), while others remained non-AMF inoculated (NM). The results indicated significantly higher shoot biomass in the MG-NM treatment, showing a 3.4-fold increase compared to the NY-NM treatment. The MG-CC treatment exhibited the most substantial increase in root biomass, reaching 5-fold that in the NY-NM treatment. Co-inoculation of AMF and yeast influenced antioxidant activity, particularly catalase and ascorbate peroxidase. Furthermore, AMF and yeast inoculation individually led to a 2-fold decrease in total phenols in the roots. Yeast inoculation notably reduced non-enzymatic antioxidant activity in the ABTS and CUPRAC assays. Both AMF and yeast inoculation promoted the production of photosynthetic pigments, further emphasizing their importance in phytoremediation programs for mine tailings.

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Section: Discussionmentioning

confidence: 99%

Beneficial Interactive Effects Provided by an Arbuscular Mycorrhizal Fungi and Yeast on the Growth of Oenothera picensis Established on Cu Mine Tailings

Pérez,

Tapia,

Antilén

et al. 2023

Plants

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“…After incubating at 32 °C seven days and centrifuging 15 min at 6,300 g, culture supernatants were placed in plates with CAS-agar. CAS-agar (100 mL) was prepared according to Schwyn and Neilands [26] with modifications [27]. 7.5 mL of 2 mM Chrome Azurol S were mixed with 1.5 mL iron solution (1 mM FeCl3.6H2O, 10 mM HCl).…”

Section: Evaluation Of Plant Growth-promoting Propertiesmentioning

confidence: 99%

Screening of Indigenous Microorganisms as Potential Biofertilisers for Periurban Horticulture Areas

Querejeta¹,

Rossi²,

Monroy³

et al. 2022

J. sustain. dev. energy water environ. syst.

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In Buenos Aires periurban area, horticultural practices are one of the most important activities. Pesticides and fertilisers are used without any control to cover the farmers' needs, obtaining high crop yields at short terms and modifying soil ecosystem in the long term. The aim of this work was to isolate indigenous strains from periurban horticultural units with pesticide degrading capacity and to evaluate their plant growth-promoting properties in order to design biofertilisers to be applied in the restoration of these exploited soils. After the screening, eight strains were isolated and identified. They showed not only the capacity to produce indole-3-acetic acid, to fix nitrogen, to secrete siderophores and to solubilise calcium phosphate but also tolerated the mixture of pesticides usually used for horticultural practices. By their behaviour in mixed cultures and plant growth-promoting properties, these autochthonous isolates represent a promising alternative as biofertilisers according to soil type and activity.

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“…It was even successfully applied in an effluent biotreatment method for the removal of copper(II) from copper-loaded effluents [ 75 ]. Although it was suggested that the metal–siderophore interaction may have also contributed to the binding of copper(II) or some other heavy metals via the P. veronii 2E strain [ 76 ], copper(II) did not promote siderophore genesis. Thus, the interaction of copper(II) in biofilm matrix and complexation by EPSs should be considered the primary detoxification mechanism in P. veronii 2E, since the production of soluble ExPs in the presence of divalent cationic heavy metals was enhanced.…”

Section: Environmental Applications Of Expsmentioning

confidence: 99%

Role of Exopolysaccharides of Pseudomonas in Heavy Metal Removal and Other Remediation Strategies

et al. 2022

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Pseudomonas biofilms have been studied intensively for several decades and research outcomes have been successfully implemented in various medical and agricultural applications. Research on biofilm synthesis and composition has also overlapped with the objectives of environmental sciences, since biofilm components show exceptional physicochemical properties applicable to remediation techniques. Especially, exopolysaccharides (ExPs) have been at the center of scientific interest, indicating their potential in solving the environmental issues of heavy metal land and water contamination via sorptive interactions and flocculation. Since exposure to heavy metal via contaminated water or soil poses an imminent risk to the environment and human health, ExPs provide an interesting and viable solution to this issue, alongside other effective and green remedial techniques (e.g., phytostabilization, implementation of biosolids, and biosorption using agricultural wastes) aiming to restore contaminated sites to their natural, pollution-free state, or to ameliorate the negative impact of heavy metals on the environment. Thus, we discuss the plausible role and performance of Pseudomonas ExPs in remediation techniques, aiming to provide the relevant available and comprehensive information on ExPs’ biosynthesis and their usage in heavy metal remediation or other environmental applications, such as wastewater treatment via bioflocculation and soil remediation.

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Chemical characterization and ligand behaviour of Pseudomonas veronii 2E siderophores

Cited by 11 publications

References 66 publications

Beneficial Interactive Effects Provided by an Arbuscular Mycorrhizal Fungi and Yeast on the Growth of Oenothera picensis Established on Cu Mine Tailings

Beneficial Interactive Effects Provided by an Arbuscular Mycorrhizal Fungi and Yeast on the Growth of Oenothera picensis Established on Cu Mine Tailings

Screening of Indigenous Microorganisms as Potential Biofertilisers for Periurban Horticulture Areas

Role of Exopolysaccharides of Pseudomonas in Heavy Metal Removal and Other Remediation Strategies

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