Screening for pigment production and characterization of pigment profile and photostability in cold-adapted Antarctic bacteria using FT-Raman spectroscopy

Akulava, Volha; Byrtusova, Dana; Zimmermann, Boris; Smirnova, Margarita; Kohler, Achim; Miamin, Uladzislau; Valentovich, Leonid; Shapaval, Volha

doi:10.1016/j.jphotochem.2024.115461

Cited by 4 publications

(1 citation statement)

References 42 publications

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“…Within the carotenoids are carotenes and xanthophylls; the former are hydrocarbons and the latter are oxygenated derivatives. One of the most commercially valuable carotenoids is astaxanthin, which can be obtained from marine microorganisms and is used as an additive to animal feed, and as a food supplement for humans, and some that produce microorganisms are Agrobacterium aurantiacum and Altererythrobacter ishigakiens [42]. Studies on the possible uses of astaxanthin are diverse, but the most notorious are those found in the medical field since there is talk of its potential as an antioxidant and its anti-inflammatory activity, because it exerts protective effects on liver cells after the induction of inflammation [43], and protects neuronal cells from oxidative stress through the activation of specific pathways [44].…”

Section: Pigmentsmentioning

confidence: 99%

Blue Biotechnology: Marine Bacteria Bioproducts

Maldonado-Ruiz,

Pedroza-Islas,

Pedraza-Segura

2024

Microorganisms

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The ocean is the habitat of a great number of organisms with different characteristics. Compared to terrestrial microorganisms, marine microorganisms also represent a vast and largely unexplored reservoir of bioactive compounds with diverse industrial applications like terrestrial microorganisms. This review examines the properties and potential applications of products derived from marine microorganisms, including bacteriocins, enzymes, exopolysaccharides, and pigments, juxtaposing them in some cases against their terrestrial counterparts. We discuss the distinct characteristics that set marine-derived products apart, including enhanced stability and unique structural features such as the amount of uronic acid and sulfate groups in exopolysaccharides. Further, we explore the uses of these marine-derived compounds across various industries, ranging from food and pharmaceuticals to cosmetics and biotechnology. This review also presents a broad description of biotechnologically important compounds produced by bacteria isolated from marine environments, some of them with different qualities compared to their terrestrial counterparts.

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Section: Pigmentsmentioning

confidence: 99%

Blue Biotechnology: Marine Bacteria Bioproducts

Maldonado-Ruiz,

Pedroza-Islas,

Pedraza-Segura

2024

Microorganisms

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Hunting for pigments in bacterial settlers of the Great Pacific Garbage Patch

Scales,

Hassenrück,

Moldaenke

et al. 2024

Environmental Microbiology

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The Great Pacific Garbage Patch, a significant collection of plastic introduced by human activities, provides an ideal environment to study bacterial lifestyles on plastic substrates. We proposed that bacteria colonizing the floating plastic debris would develop strategies to deal with the ultraviolet‐exposed substrate, such as the production of antioxidant pigments. We observed a variety of pigmentation in 67 strains that were directly cultivated from plastic pieces sampled from the Garbage Patch. The genomic analysis of four representative strains, each distinct in taxonomy, revealed multiple pathways for carotenoid production. These pathways include those that produce less common carotenoids and a cluster of photosynthetic genes. This cluster appears to originate from a potentially new species of the Rhodobacteraceae family. This represents the first report of an aerobic anoxygenic photoheterotrophic bacterium from plastic biofilms. Spectral analysis showed that the bacteria actively produce carotenoids, such as beta‐carotene and beta‐cryptoxanthin, and bacteriochlorophyll a. Furthermore, we discovered that the genetic ability to synthesize carotenoids is more common in plastic biofilms than in the surrounding water communities. Our findings suggest that plastic biofilms could be an overlooked source of bacteria‐produced carotenoids, including rare forms. It also suggests that photoreactive molecules might play a crucial role in bacterial biofilm communities in surface water.

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Explorative characterization and taxonomy‐aligned comparison of alterations in lipids and other biomolecules in Antarctic bacteria grown at different temperatures

Akulava,

Smirnova,

Byrtusova

et al. 2024

Environ Microbiol Rep

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Temperature significantly impacts bacterial physiology, metabolism and cell chemistry. In this study, we analysed lipids and the total cellular biochemical profile of 74 fast‐growing Antarctic bacteria grown at different temperatures. Fatty acid diversity and temperature‐induced alterations aligned with bacterial classification—Gram‐groups, phylum, genus and species. Total lipid content, varied from 4% to 19% of cell dry weight, was genus‐ and species‐specific. Most bacteria increased lipid content at lower temperatures. The effect of temperature on the profile was complex and more species‐specific, while some common for all bacteria responses were recorded. Gram‐negative bacteria adjusted unsaturation and acyl chain length. Gram‐positive bacteria adjusted methyl branching (anteiso‐/iso‐), chain length and unsaturation. Fourier transform infrared spectroscopy analysis revealed Gram‐, genus‐ and species‐specific changes in the total cellular biochemical profile triggered by temperature fluctuations. The most significant temperature‐related alterations detected on all taxonomy levels were recorded for mixed region 1500–900 cm−1, specifically the band at 1083 cm−1 related to phosphodiester groups mainly from phospholipids (for Gram‐negative bacteria) and teichoic/lipoteichoic acids (for Gram‐positive bacteria). Some changes in protein region were detected for a few genera, while the lipid region remained relatively stable despite the temperature fluctuations.

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Screening for pigment production and characterization of pigment profile and photostability in cold-adapted Antarctic bacteria using FT-Raman spectroscopy

Cited by 4 publications

References 42 publications

Blue Biotechnology: Marine Bacteria Bioproducts

Blue Biotechnology: Marine Bacteria Bioproducts

Hunting for pigments in bacterial settlers of the Great Pacific Garbage Patch

Explorative characterization and taxonomy‐aligned comparison of alterations in lipids and other biomolecules in Antarctic bacteria grown at different temperatures

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