The effect of pH on the acute toxicity of phenanthrene in a marine microalgae Chlorella salina

Chen, Haigang; Zhe, Zhang; Tian, Fei; Zhang, Linbao; Li, Yitong; Cai, Wei; Jia, Xiaoping

doi:10.1038/s41598-018-35686-9

Cited by 27 publications

(12 citation statements)

References 48 publications

(60 reference statements)

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“…This may have partly resulted from the different culture methods applied: semi-continuous culture and batch culture were used for the present study and Calderón-Delgado’s study, respectively 20 . In addition, nutrient conditions and culture pH have been shown to modulate the toxicity of PAHs, with increased toxicity at lower pH 11 and under enriched nutrient conditions 21 . Thus, the higher cell density and culture pH and lower nutrient concentrations in batch cultures of Calderón-Delgado’s study resulted in insignificant effects of phenanthrene 20 .…”

Section: Discussionmentioning

confidence: 99%

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Stimulatory and inhibitory effects of phenanthrene on physiological performance of Chlorella vulgaris and Skeletonema costatum

Jiang¹,

Pan²,

Zhu³

et al. 2022

Sci Rep

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The effects of polycyclic aromatic hydrocarbons on phytoplankton have been extensively documented, but there is limited knowledge about the physiological responses of marine primary producers to phenanthrene at environmentally relevant levels. Here, we investigated the toxicity of phenanthrene (0, 1, and 5 or 10 μg L−1) to the physiological performance of two cosmopolitan phytoplankton species: the green alga Chlorella vulgaris and bloom-forming diatom Skeletonema costatum. The specific growth rates of both species were remarkably inhibited at both low (1 μg L−1) and high phenanthrene concentrations (5 or 10 μg L−1), while their tolerance to phenanthrene differed. At the highest phenanthrene concentration (10 μg L−1), the growth of C. vulgaris was inhibited by 69%, and no growth was observed for S. costatum cells. The superoxide dismutase activity of both species was enhanced at high phenanthrene concentration, and increased activity of catalase was only observed at high phenanthrene concentration in C. vulgaris. Interestingly, the low phenanthrene concentration stimulated the photosynthetic and relative electron transport rates of S. costatum, whereas hormetic effects were not found for growth. Based on our results, phenanthrene could be detrimental to these two species at a environmentally relevant level, while different tolerance levels were detected.

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Section: Discussionmentioning

confidence: 99%

“…The influences of PAHs on phytoplankton have been extensively investigated. The toxicity of phenanthrene to Chlorella salina was shown to be influenced by culture pH, with decreased concentrations required to inhibit growth by 50% as the pH decreased 11 . The toxicity of PAHs also depends on the exposure time.…”

Section: Introductionmentioning

confidence: 99%

Stimulatory and inhibitory effects of phenanthrene on physiological performance of Chlorella vulgaris and Skeletonema costatum

Jiang¹,

Pan²,

Zhu³

et al. 2022

Sci Rep

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“…pH varies less in marine environments and most of the hydrocarbon-degrading microorganisms require a neutral pH. In general, extremely low or high pH affects the microbial behavior with a 40% phenanthrene breakdown observed at pH 5.5 [75]. However, under the same conditions, the breakdown at neutral pH was 80%.…”

Section: Environmental Factors Influencing Mycoremediation Of Pahsmentioning

confidence: 97%

Fungi as veritable tool in bioremediation of polycyclic aromatic hydrocarbons‐polluted wastewater

Alao

Adebayo

2022

J Basic Microbiol

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Polycyclic aromatic hydrocarbons of diverse forms have found application in different industries and man heavily depends on these compounds for various purposes. Thus, tonnes of thousands of polycyclic aromatic hydrocarbons are released into various water bodies yearly, resulting in pollution with great effects on aquatic lives, man, and the ecosystem at large. Hydrocarbon pollutions in wastewater are remediated by some physical and chemical methods with most of these techniques leaving a different form of harmful byproducts after the remediation. Furthermore, several species of fungi are important in the microbial bioremediation of polycyclic aromatic hydrocarbon in wastewater as they are capable of using these compounds as their source of carbon and energy in the presence of oxygenase. Fungal bioremediation is costeffective, safer, and ecologically friendly, in addition to fungi producing polycyclic aromatic hydrocarbon degradative enzymes in high amounts, both intracellularly and extracellularly. Although optimizing the growth requirement of fungi in the field is a major challenge, current advances in the application of fungi in bioremediation address this. This review discusses in detail the technology of fungal bioremediation of polycyclic aromatic hydrocarbon in wastewater and its beneficial roles to man and the ecosystem. The benefits of remediating polycyclic aromatic hydrocarbon-polluted water with fungi and their metabolites via nanotechnology, immobilization, genomic manipulation, and other technologies to generate value-added products are highlighted in this manuscript. Information in this review will provide useful important insights to researchers and industrial professionals in the bioremediation of polycyclic aromatic hydrocarbon.

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“…The presence of heavy metals in the environment is often indicative of inorganic contamination while polycyclic aromatic hydrocarbons (PHAs) are related to organic contamination. Among heavy metals and PHAs, chromium and phenanthrene, respectively, are examples of frequent contaminants and they are often used as model to study bioremediation processes (Hu et al 2016;Chen et al 2018;Fasano et al 2018). The U.S. Environmental Protection Agency (www.epa.gov) established a maximum contaminant level of 0Á2 parts per billion (ppb) for PHAs and 100 ppb for total chromium.…”

Section: Introductionmentioning

confidence: 99%

Genomic analysis and proteomic response of the chromium‐resistant and phenanthrene‐degrading strain Streptomyces sp. MC1

et al. 2021

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Aim: Chemically disparate toxic organic and/or inorganic molecules produced by anthropogenic activities often hinder the bioremediation process. This research was conducted to understand the capacity of Streptomyces sp. MC1 to remove chemically disparate toxics such as Cr(VI) or phenanthrene. Methods and Results: Genomic, metabolic modeling and proteomic approaches were used in this study. Our results demonstrated that Streptomyces sp. MC1 has the genetic determinants to remove Cr(VI) or degrade phenanthrene. Proteomics showed that these genetic determinants were expressed. Metabolic versatility of the strain was confirmed by two metabolic models in complex and minimal media. Interestingly, our results also suggested a connection between the degradation of phenanthrene and synthesis of specialized metabolites. Conclusions: Streptomyces sp. MC1 has the genetic and physiological potential to remove Cr(VI) or degrade phenanthrene Significance and Impact of Study: The probability of a microorganism to survive in the presence of different contaminants depends on its genetic potential and the ability to express it. The genetic and proteomic profiles obtained for Streptomyces sp. MC1 can be recommended as model and predict if other Streptomyces strains can be used in bioremediation processes. Our work also hypothesized that intermediates of the phenanthrene degradation serve as precursors for the specialized metabolism.

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The effect of pH on the acute toxicity of phenanthrene in a marine microalgae Chlorella salina

Cited by 27 publications

References 48 publications

Stimulatory and inhibitory effects of phenanthrene on physiological performance of Chlorella vulgaris and Skeletonema costatum

Stimulatory and inhibitory effects of phenanthrene on physiological performance of Chlorella vulgaris and Skeletonema costatum

Fungi as veritable tool in bioremediation of polycyclic aromatic hydrocarbons‐polluted wastewater

Genomic analysis and proteomic response of the chromium‐resistant and phenanthrene‐degrading strain Streptomyces sp. MC1

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