Bioreduction of precious and heavy metals by <i>Candida</i> species under oxidative stress conditions

Moreno, Abel; Demitri, Nicola; Ruiz-Baca, Estela; Vega‐González, Arturo; Polentarutti, Maurizio; Cuéllar‐Cruz, Mayra

doi:10.1111/1751-7915.13364

Cited by 7 publications

(2 citation statements)

References 66 publications

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“…Regarding C. albicans, this is a eukaryote microorganism found in diverse habitats, from water and soil to the human host . Once biomorphs were synthesized in the different conditions, they were exposed for 7 consecutive days to UV light in two different media: air and the other was the SS-Fe (3+) (called thereafter SS-Fe only) solution, to emulate the two conditions co-existing in the Precambrian − and to evaluate whether one of the two media was most probable for the preservation of biomolecules.…”

Section: Resultsmentioning

confidence: 99%

“…40 Regarding C. albicans, this is a eukaryote microorganism found in diverse habitats, from water and soil to the human host. 41 Once biomorphs were synthesized in the different conditions, they were exposed for 7 consecutive days to UV light in two different media: air and the other was the SS-Fe (3+) (called thereafter SS-Fe only) solution, to emulate the two conditions co-existing in the Precambrian 42−45 and to evaluate whether one of the two media was most probable for the preservation of biomolecules. In this way, it would be possible to support our proposed hypothesis regarding that the biomorphs might have been one of the first inorganic structures in which protomolecules became isolated and protected from the adverse conditions prevailing in that era.…”

Section: Biomorphs Protect Dna From Uv Radiationmentioning

confidence: 99%

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New Insights on the Origin of Life: The Role of Silico-Carbonates of Ba (II) to Preserve DNA against Highly Intense UV Radiation

Cuéllar‐Cruz

2023

ACS Omega

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Understanding the origin of life on our planet has generated diverse theories. Currently, the theory is that life has a single origin; however, its starting point has not been defined. As evidenced, it is indispensable to unify the different theories to reach a single theory that would also allow linking the different areas of knowledge to finally understand the mechanism by which life originated on Earth. In this regard, aiming at contributing to the unification of the diverse theories on the origin of life, in this work, the hypothesis based on the condition that silica-carbonates of alkaline earth metals, called biomorphs, are the ones that could unify all the proposed theories on the origin of life is proposed. Aimed at evaluating if this hypothesis is viable, this work assessed whether biomorphs are able to protect the DNA from continuous UV radiation under two conditions that emulate the habitats that could have co-existed in the Precambrian and, after the radiation, evaluated the time during which DNA remained inside the biomorphs. Our results showed that biomorphs can protect the DNA for months after continuous UV exposure. It was also determined that biomorphs protect the DNA from external factors in different habitats, like normal atmospheric conditions and in aqueous environments. The obtained data allowed me to infer that biomorphs may be the gap that unifies the diverse proposed theories on the origin of life in our Planet.

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Section: Resultsmentioning

confidence: 99%

Section: Biomorphs Protect Dna From Uv Radiationmentioning

confidence: 99%

New Insights on the Origin of Life: The Role of Silico-Carbonates of Ba (II) to Preserve DNA against Highly Intense UV Radiation

Cuéllar‐Cruz

2023

ACS Omega

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Heavy metal-induced oxidative stress and alteration in secretory proteins in yeast isolates

et al. 2022

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In the recent years, yeasts have evolved as potent bioremediative candidates for the detoxi cation of xenobiotic compounds found in the natural environment. Candida sp. are well studied apart from Saccharomyces in heavy metal detoxi cation mechanisms. In the current study, Candida parapsilosis strain ODBG2, Candida sp. strain BANG3 and Candida viswanathii strain ODBG4 were isolated from industrial e uents and contaminated ground water were studied for their metal tolerance. Among these three isolates, the metal tolerance was found to be more towards Lead (Pb 2mM), followed by Cadmium (Cd 1.5mM) and Chromium (Cr(VI), 1mM). On further exploring the involvement of primary defensive enzymes in these isolates exhibited towards metal tolerance, the anti-oxidative enzyme Superoxide dismutase (SOD) was found to be prominently high as 25% during rst 24h of metal-isolate interaction. In the Catalase (CAT) enzyme assay, it was observed that, the increased enzyme activity at 48h also triggered the activity of peroxidases (PO), which lead to the increase in reduced glutathione (GSH) in the organism by 0.87-1.9 folds, as a metal chelator and also as a second line of defensive molecule. The exoproteome pro le showed the early involvement (exponential growth phase) of secreted proteins (low molecular weight) of about ~40-45kDa under Cd and Pb stress (0.5mM). The exoproteome pro ling under heavy metal stress in Candida parapsilosis strain ODBG2 and Candida viswanathii strain ODBG4 is the rst report.

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Microbial silver resistance mechanisms: recent developments

Terzioğlu

Arslan

Balaban

et al. 2022

World J Microbiol Biotechnol

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Bioreduction of precious and heavy metals by Candida species under oxidative stress conditions

Cited by 7 publications

References 66 publications

New Insights on the Origin of Life: The Role of Silico-Carbonates of Ba (II) to Preserve DNA against Highly Intense UV Radiation

New Insights on the Origin of Life: The Role of Silico-Carbonates of Ba (II) to Preserve DNA against Highly Intense UV Radiation

Heavy metal-induced oxidative stress and alteration in secretory proteins in yeast isolates

Microbial silver resistance mechanisms: recent developments

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