Microalgal Phycoremediation: A Glimpse into a Sustainable Environment

Pradhan, Biswajita; Bhuyan, Prajna Paramita; Nayak, Rabindra; Patra, Srimanta; Behera, Chhandashree; Ki, Jang‐Seu; Ragusa, Andrea; Лукаткин, А. С.; Jena, Mrutyunjay

doi:10.3390/toxics10090525

Cited by 18 publications

(9 citation statements)

References 118 publications

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“…Additionally, a further classification of As is needed since organic As is far less toxic compared to inorganic arsenic species [ 106 ]. The accumulation of heavy metals showed a great variety between and within the same phyla as well as different and similar culture media, which is in accordance with the literature [ 107 , 108 ]. These data indicate that the accumulation of heavy metals does not only depend on the degree of heavy metal input during cultivation, which should, therefore, be carefully monitored and minimized.…”

Section: Discussionsupporting

confidence: 91%

Variability in Macro- and Micronutrients of 15 Rarely Researched Microalgae

et al. 2023

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Microalgae have enormous potential for human nutrition, yet the European Commission has authorized the consumption of only eleven species. Strains of fifteen rarely researched microalgae from two kingdoms were screened regarding their nutritional profile and value for human health in two cultivation phases. Contents of protein, fiber, lipids, fatty acids, minerals, trace elements and heavy metals were determined. In the growth phase, microalgae accumulated more arginine, histidine, ornithine, pure and crude protein, Mg, Mn, Fe and Zn and less Ni, Mo and I2 compared to the stationary phase. Higher contents of total fat, C14:0, C14:1n5, C16:1n7, C20:4n6, C20:5n3 and also As were observed in microalgae from the chromista kingdom in comparison to microalgae from the plantae kingdom (p < 0.05). Conversely, the latter had higher contents of C20:0, C20:1n9 and C18:3n3 as well as Ca and Pb (p < 0.05). More precisely, Chrysotila carterae appeared to have great potential for human nutrition because of its high nutrient contents such as fibers, carotenoids, C20:6n3, Mg, Ca, Mn, Fe, Se, Zn, Ni, Mo and I2. In summary, microalgae may contribute to a large variety of nutrients, yet the contents differ between kingdoms, cultivation phases and also species.

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Section: Discussionsupporting

confidence: 91%

Variability in Macro- and Micronutrients of 15 Rarely Researched Microalgae

et al. 2023

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“…When two bacterial genes were co-expressed in Arabidopsis and cultivated in a medium containing sodium arsenate (125 M), the results were similar to those seen in above-ground biomass [103]. There is a lot of promise for improving heavy metals and metalloid resistance by altering genes to boost the production of metal chelation agents [104]. In A. thaliana and B. juncea, the constitutive expression of AtPCS1 boosted arsenate tolerance but did not increase shoot growth.…”

Section: Recent Biotechnological Approaches For Potential Phytoremedi...mentioning

confidence: 62%

Current Status of Biotechnological Approaches to Enhance the Phytoremediation of Heavy Metals in India—A Review

Barathi,

Lee,

Venkatesan

et al. 2023

Plants

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Rising waste construction, agricultural actions, and manufacturing sewages all contribute to heavy metal accumulation in water resources. Humans consume heavy metals-contaminated substances to make sustenance, which equally ends up in the food circle. Cleaning of these vital properties, along with the prevention of new pollution, has long been required to evade negative strength consequences. Most wastewater treatment techniques are widely acknowledged to be costly and out of the grasp of governments and small pollution mitigation businesses. Utilizing hyper-accumulator plants that are extremely resilient to heavy metals in the environment/soil, phytoremediation is a practical and promising method for eliminating heavy metals from contaminated environments. This method extracts, degrades, or detoxifies harmful metals using green plants. The three phytoremediation techniques of phytostabilization, phytoextraction, and phytovolatilization have been used extensively for soil remediation. Regarding their ability to be used on a wide scale, conventional phytoremediation methods have significant limitations. Hence, biotechnological attempts to change plants for heavy metal phytoremediation methods are extensively investigated in order to increase plant effectiveness and possible use of improved phytoremediation approaches in the country of India. This review focuses on the advances and significance of phytoremediation accompanied by the removal of various harmful heavy metal contaminants. Similarly, sources, heavy metals status in India, impacts on nature and human health, and variables influencing the phytoremediation of heavy metals have all been covered.

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“…Efflux is an important process for algae to detoxify heavy metals. ,, To simulate the efflux and desorption of Hg from algae cells with high levels of Hg into ambient water with low levels of Hg, CH, and CD exposed to 199 IHg and 201 MeHg for 24 h were resuspended in N-, P-, and Hg-free mediums. It was demonstrated that both IHg ab and MeHg ab on single cells decreased over time (Figures A and S18A), suggesting the efflux process from algae cells to ambient water.…”

Section: Resultsmentioning

confidence: 99%

Bioconcentration of Inorganic and Methyl Mercury by Algae Revealed Using Dual-Mass Single-Cell ICP-MS with Double Isotope Tracers

Tian,

Wang,

et al. 2024

Environ. Sci. Technol.

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Algae are an entry point for mercury (Hg) into the food web. Bioconcentration of Hg by algae is crucial for its biogeochemical cycling and environmental risk. Herein, considering the cell heterogeneity, we investigated the bioconcentration of coexisting isotope-labeled inorganic ( 199 IHg) and methyl Hg ( 201 MeHg) by six typical freshwater and marine algae using dualmass single-cell inductively coupled plasma mass spectrometry (scICP-MS). First, a universal pretreatment procedure for the scICP-MS analysis of algae was developed. Using the proposed method, the intra-and interspecies heterogeneities and the kinetics of Hg bioconcentration by algae were revealed at the single-cell level. The heterogeneity in the cellular Hg contents is largely related to cell size. The bioconcentration process reached a dynamic equilibrium involving influx/adsorption and efflux/desorption within hours. Algal density is a key factor affecting the distribution of Hg between algae and ambient water. Cellular Hg contents were negatively correlated with algal density, whereas the volume concentration factors almost remained constant. Accordingly, we developed a model based on single-cell analysis that well describes the density-driven effects of Hg bioconcentration by algae. From a novel single-cell perspective, the findings improve our understanding of algal bioconcentration governed by various biological and environmental factors.

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Microalgal Phycoremediation: A Glimpse into a Sustainable Environment

Cited by 18 publications

References 118 publications

Variability in Macro- and Micronutrients of 15 Rarely Researched Microalgae

Variability in Macro- and Micronutrients of 15 Rarely Researched Microalgae

Current Status of Biotechnological Approaches to Enhance the Phytoremediation of Heavy Metals in India—A Review

Bioconcentration of Inorganic and Methyl Mercury by Algae Revealed Using Dual-Mass Single-Cell ICP-MS with Double Isotope Tracers

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