Effects of Titanium Dioxide Nanoparticles in Different Metabolic Pathways in the Freshwater Microalga Chlorella sorokiniana (Trebouxiophyceae)

Marchello, Adriano Evandir; Barreto, Daniela Mariano; Lombardi, Ana Teresa

doi:10.1007/s11270-018-3705-5

Cited by 24 publications

(6 citation statements)

References 52 publications

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“…Although we do not know which protein class was stimulated in C. sorokiniana , we suggest that they were not structural proteins, because this would tend to support the growth rate values. The fact that proteins increased only at the highest concentrations of Cu‐NPs suggests that binding and/or antioxidants proteins were responsible for the observed increase, rather than structural molecules, similar to that obtained by Marchello et al () for C. sorokiniana exposed to TiO 2 ‐NPs. According to Vale et al (), enzymes such as superoxide dismutase, catalase, and glutathione peroxidase can be activated to neutralize free radicals after exposure to NPs, and antioxidant enzymes in general can also be activated (Melegari et al ; Costa et al ).…”

Section: Discussionsupporting

confidence: 86%

“…Navarro et al () exposed C. reinhardtii to concentrations as high as 360 μg L −1 Ag‐NPs; Saison et al () used 20 000 μg L −1 CuO‐NPs, and Costa et al () 10 7 μg L −1 Cr 2 O 3 ‐NPs. Marchello et al () found that TiO 2 ‐NPs does not appear to affect C. sorokiniana photosynthesis exposed to 7900 µg L −1 . Even though different metals can have different toxic mechanisms and each species has its own biology, these authors showed that the photosystem II reaction centers were damaged, and they suggest that the oxidative stress induced by exposure to NPs resulted in lower photosynthetic yield.…”

Section: Discussionmentioning

confidence: 99%

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Physiological responses of Chlorella sorokiniana to copper nanoparticles

Barreto

Tonietto

Amaral

et al. 2019

Enviro Toxic and Chemistry

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Copper (Cu) nanomaterials have been increasingly researched and produced for many different consumer products. They have high reactivity and bactericidal properties, making them important in antifouling paints, which are thus directly introduced into aquatic ecosystems. However, studies are scarce on the behavior of Cu nanoparticles (Cu-NPs) in natural aquatic systems and their interactions with primary producers such as microalgae. We investigated the effects of NPs on some physiological responses of the freshwater phytoplankton Chlorella sorokiniana. The cells were exposed to nominal concentrations ranging from 2.50 to 635.00 mg L À1 Cu-NPs for 96 h under laboratory-controlled conditions. The cultures were monitored daily for population growth and maximum photosynthetic quantum yield. Total lipids, proteins, and carbohydrates were quantified at 72 h of Cu-NP exposure. The results showed a positive correlation between nominal Cu-NPs and Cu in the biomass (0.97 correlation coefficient) and that this was inversely proportional to total carbohydrates, with a -0.64 correlation coefficient. At the higher end of the Cu-NP concentrations tested, higher total proteins and reduced growth rates were obtained in comparison with controls; we suggest that metal-binding proteins/antioxidants and nonstructural proteins were preferentially produced under these conditions. Our results contribute to an understanding of the interaction between Cu-NPs and a cosmopolitan phytoplankton, C. sorokiniana, and we emphasize that the disposal and use of Cu-NPs requires monitoring because even at environmentally relevant concentrations, the composition of the algae was affected. Environ Toxicol Chem 2019;38:387-395. C 2018 SETAC

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Section: Discussionsupporting

confidence: 86%

Section: Discussionmentioning

confidence: 99%

Physiological responses of Chlorella sorokiniana to copper nanoparticles

Barreto

Tonietto

Amaral

et al. 2019

Enviro Toxic and Chemistry

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“…The latter suggest that the stress conditions caused by the addition of Fe 2 O 3 induced lipid oxidation by reactive oxygen species (ROS) and the accumulation of carbohydrates as a protective response. These results were in agreement with Marchello and coworkers [42] who observed that the exposure of C. sorokiniana to TiO 2 NPs caused stress in microalgae cells, which resulted in a 140 % carbohydrate enhancement. Romero and coworkers [43] also observed a carbohydrate enhancement of up to 80 % in Chlorella vulgaris when exposed to Ag NPs.…”

Section: Tablesupporting

confidence: 93%

Influence of mesoporous iron based nanoparticles on Chlorella sorokiniana metabolism during photosynthetic biogas upgrading

Vargas-Estrada

Hoyos²,

Sebastian³

et al. 2023

Fuel

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“…by 15% [25]. Accumulation of carbohydrates as storage molecules to protect algal cells was also reported with TiO 2 nanoparticles, which doubled the carbohydrate concentration from controls in Chlorella sorokiniana [30] or silver nanoparticles in Skeletonema costatum [8].…”

Section: The Effect Of Silver Nanoparticles On the Carbohydratesmentioning

confidence: 78%

Applying Silver Nanoparticles to Enhance Metabolite Accumulation and Biodiesel Production in New Algal Resources

et al. 2022

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Biofuel generation from algae can be increased by using nanotechnology. The present study emphasizes the use of silver nanoparticles on algae for algal fuel generation along with the impact of nanoparticles on biomass, metabolites and lipid profile. Silver ion amassing was enhanced in each algal species, but maximum phytoremediation was found in Ulothrix sp. Carbohydrates increased 3.2 times in Oedogonium sp., 3.3 times in Ulothrix sp., 3 times in Cladophora sp. and 2.7 times in Spirogyra sp. Additionally, the application of nanoparticles enhanced by 2 times the production of proteins in Oedogonium sp., 1.9 times in Ulothrix sp., 1.9 times in Cladophora sp. and 2.1 times in Spirogyra sp. Finally, the total lipid yield increased 60% DCW in Oedogonium sp., 56% DCW in Ulothrix sp., 58% DCW in Cladophora sp. and 63% DCW in Spirogyra sp. using 0.08 mg/L silver nanoparticle application. The lipids and fatty acid fractions from algae containing high concentrations of C16:0, C18:0 and C18:1 enhanced with silver nanoparticle addition were comparable with EN 14214 and ASTM 6751 biodiesel standards. This study indicates that the uptake of AgNPs can enhance the production of fatty acids and be commercialized as sustainable biodiesel. The algae Ulothrix sp. is evidenced as the best competent feedstock for biofuel production.

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Effects of Titanium Dioxide Nanoparticles in Different Metabolic Pathways in the Freshwater Microalga Chlorella sorokiniana (Trebouxiophyceae)

Cited by 24 publications

References 52 publications

Physiological responses of Chlorella sorokiniana to copper nanoparticles

Physiological responses of Chlorella sorokiniana to copper nanoparticles

Influence of mesoporous iron based nanoparticles on Chlorella sorokiniana metabolism during photosynthetic biogas upgrading

Applying Silver Nanoparticles to Enhance Metabolite Accumulation and Biodiesel Production in New Algal Resources

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