Microbial Life in Cold Regions of the Deep Sea

Kaur, Jupinder; Vishnu, A. L.; Khipla, Neha; Kaur, Jaspreet

doi:10.1007/978-981-16-2625-8_3

Cited by 2 publications

(2 citation statements)

References 90 publications

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“…As summarized by [18], various patents are also available for products derived from polar microalgae but these are mainly related to cosmetic ingredients (i.e., carotenoids and mycosporine-like amino acids) and AFPs for industrial applications and chemical processing. Similarly, marine cold-adapted bacteria were studied in terms of their symbiotic associations [19], life in cold habitats [20], and possible applications [13,21,22]. This review will focus on products from cold-adapted bacteria and microalgae produced as defense strategies in cold habitats which also have potential industrial applications (Figure 1), such as PUFAs, antioxidant systems (including metabolites and enzymes), and AFPs.…”

Section: Introductionmentioning

confidence: 99%

Biotechnological Applications of Products Released by Marine Microorganisms for Cold Adaptation Strategies: Polyunsaturated Fatty Acids, Antioxidants, and Antifreeze Proteins

Lauritano

Coppola

2023

JMSE

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Marine organisms have developed a series of defense and adaptation strategies, permitting them to live and survive in peculiar environments, ranging from temperate to tropical and polar regions, high to low salinity areas and different light conditions, as well as are constantly exposed to variations induced by climate change and human activities. These defense strategies include the production of molecules and enzymes which may have applications for humans as well. In this review, we summarized the studies on bacterial and microalgal polyunsaturated fatty acids, antioxidants, and antifreeze proteins, which can find applications in different market sectors, such as feed and cosmetic fields. For all the aforementioned compounds, the compound annual growth rate is expected to increase by 5.35–36.3% in the near future, as the market interest toward these products is on the rise. Both industries and researchers are focused on developing mechanisms to reduce production time and costs, improve yields, and discover new proteins.

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Section: Introductionmentioning

confidence: 99%

Biotechnological Applications of Products Released by Marine Microorganisms for Cold Adaptation Strategies: Polyunsaturated Fatty Acids, Antioxidants, and Antifreeze Proteins

Lauritano

Coppola

2023

JMSE

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“…Nevertheless, further investigation on more deep-sea SRB and/or shallow-water marine SRB at elevated hydrostatic pressure will undoubtedly provide a more holistic understanding of the mechanism and progression of deep-sea MIC.Deep sea represents not only a unique environment for material corrosion but also hosts a unique microbial ecosystem(Corinaldesi 2015). To thrive in this extreme environment, microbes developed unique adaptations to deal with the oligotrophic as well as high hydrostatic pressure conditions of the deep sea(Kaur et al 2022). Whilemicrobiologically-influenced corrosion (MIC) is relatively well-studied in terrestrial and marine settings, there is very little known about deep-sea MIC.…”

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confidence: 99%

Molecular ecology and physiology of microbiologically-influenced corrosion in the deep sea

Yeo

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Corrosion poses a significant challenge to deep-sea operations, given the harsh and remote conditions of this environment. Mild steels, widely utilized for their affordability and favorable mechanical properties in marine applications, have not been extensively studied regarding microbiologically-influenced corrosion (MIC) in the deep sea. By employing hydrostatic pressure vessels and pump to replicate deepsea conditions, the MIC of the marine-grade mild steel AH36 was investigated. Here, it was found that the hydrostatic pressure may influence the severity of the MIC induced by shallow-water and deep-sea sulfate-reducing bacteria (SRB). Further comparative proteomic analysis of the selected deep-sea SRB P. piezophilus indicates that differential enrichment of proteins associated with the energy metabolism pathway when incubated with mild steel. Interestingly, elevated hydrostatic pressures do not significantly alter the total proteome of deep-sea SRB, suggesting that changes in MIC behaviors may be linked to protein activity rather than the abundance of specific proteins. To validate the deep-sea MIC, enrichment cultures from field samples collected from deep sea at a depth of 1988 m. The enrichment culture established from a corroding mooring chain exhibits aggressive MIC, causing localized corrosion attacks primarily at the edges of mild steel coupons. This corrosive microbial community comprises SRB and elemental sulfur metabolizing bacteria, hinting at a potential role of elemental sulfur in mediating deep-sea MIC. Overall, this dissertation underscores the persistent threat of MIC to mild steels, even in the extreme conditions of the deep sea. While exact mechanism remains unclear, the findings here suggest that enhanced MIC is associated with stimulating anodic reaction

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Microbial Life in Cold Regions of the Deep Sea

Cited by 2 publications

References 90 publications

Biotechnological Applications of Products Released by Marine Microorganisms for Cold Adaptation Strategies: Polyunsaturated Fatty Acids, Antioxidants, and Antifreeze Proteins

Biotechnological Applications of Products Released by Marine Microorganisms for Cold Adaptation Strategies: Polyunsaturated Fatty Acids, Antioxidants, and Antifreeze Proteins

Molecular ecology and physiology of microbiologically-influenced corrosion in the deep sea

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