Environmental toxicity: Exposure and impact of chromium on cyanobacterial species

Kiran, Boggavarapu; Rani, Nisha; Kaushik, Anubha

doi:10.1016/j.jece.2016.09.021

Cited by 15 publications

(7 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The toxicity of chromium is associated to its oxidation state. Thus Cr(VI) is carcinogenic to living organisms including humans, whereas trivalent state of chromium [Cr(III)] is nontoxic [3,4]. Industries such as petroleum refining, fiberboard, coal mine, chemical, dye, textile pulp mill, paint, and steel dispose of Cr(VI) together with phenols and dyes through their effluents [5,6].…”

Section: Introductionmentioning

confidence: 99%

Competitive photo-degradation performance of ZnO modified bentonite clay in water containing both organic and inorganic contaminants

Sasikala

Nibila

Babitha

et al. 2019

Sustain Environ Res

View full text Add to dashboard Cite

This study reports the activity difference of zinc oxide modified bentonite clay (Photo-Zn-Bent) photocatalyst when in contact with different environmentally toxic pollutants in a single component and bi-component pollutant systems. The layered structure of purified and swollen nano-bentonite clay (Bent) has tunable interlayer spacing to grow zinc oxide (ZnO) nanoparticles, thereby integrating the adsorbing nature of clay and semiconductor property of ZnO in one hierarchical structure. Initial adsorption studies using methylene blue (MB) showed that the adsorption capacity of Photo-Zn Bent is greater than Bent and ZnO. The photocatalytic pollutant degradation activity of Photo-Zn Bent is compared with ZnO using both single component and bi-component pollutant systems (MB, phenol, mixture of MB and phenol, mixture of phenol and Cr(VI)). We found that Photo-Zn Bent displayed 33% greater MB degradation rate compared to ZnO. Photodegradation efficiency of Photo-Zn-Bent considerably differs for inorganic-organic and organic-organic bicomponent pollutant systems. In bicomponent systems, photodegradation rate of phenol decreased to an extent of 88% in the presence of MB, and increased to 31% in the presence of Cr(VI). On the other hand, photodegradation rate of MB remains unaffected in the presence of phenol, but increased to 56% in the presence of Cr(VI). However, if used in bicomponent pollutant systems for simultaneous cycles, Photo-Zn Bent showed lesser activity after 3 cycles, which in turn gave further insight on to the decay of catalyst with respect to the nature of pollutants.

show abstract

Section: Introductionmentioning

confidence: 99%

Competitive photo-degradation performance of ZnO modified bentonite clay in water containing both organic and inorganic contaminants

Sasikala

Nibila

Babitha

et al. 2019

Sustain Environ Res

View full text Add to dashboard Cite

show abstract

“…Nowadays, more attention was paid on Cr (VI), one of the pathogenic factors, which is widely known to cause toxic and carcinogenic effects in living organisms . The adverse effects of Cr (VI) on living organisms, such as acute and chronic toxicity, neurotoxicity, reproductive toxicity, genotoxicity, carcinogenicity, environmental toxicity and so on, have been reported. − These toxic effects induced by kinds of xenobiotic pollutants could be the “visible” phenomenon with biochemical biomarkers (i.e., overexpressed metallothioneins induced by metals like Cd, Hg and Cu; acetylcholinesterase activated by neurotoxic compounds; biotransformation enzyme and cytochrome P4501A induced by the organic; urinary Cr, sister-chromatid exchanges (SCE), blood Cr). For better understanding of the phenomena mentioned above, researchers world-widely made some great efforts to reveal mechanisms of the toxicity induced by the toxic pollutants including Cr (VI). ,, Generally, the toxicity of Cr (VI) at the cellular and molecular level was suggested to be related to strong oxidizing action of chromates, which interactions with organic molecules resulted in reduction to the Cr (III) form , followed by an increase in DNA damage, DNA–protein cross-link formation, inappropriate activation of cellular signaling pathway, etc .…”

Section: Introductionmentioning

confidence: 99%

Transcriptome Analysis of Hepatopancreas from the Cr (VI)-Stimulated Mantis Shrimp (Oratosquilla oratoria) by Illumina Paired-End Sequencing: Assembly, Annotation, and Expression Analysis

Zhang

Li²,

et al. 2018

J. Agric. Food Chem.

View full text Add to dashboard Cite

Cr (VI), the pathogenicity factor, is widely known to cause toxic effects in living organisms. Given the economic importance of the mantis shrimp ( Oratosquilla oratoria), the understanding of impacts by Cr (VI) is considered important. In this study, transcriptome of mantis shrimp was characterized by a comparison between control and Cr (VI)-treated samples using RNA-seq approach. Totally, 88 234 826 bp and 13.24G clean reads were obtained. The total length and number of unigenes were 68 411 206 bp and 100 918, respectively. The maximal and average length of unigenes was 24 906 bp and 678 bp, respectively (N50, 798 bp). 7115 of these unigenes accounted for 7.05% of the total that were annotated in all databases. After annotation of assembled unigenes, 35 619 of them were assigned into 3 functional categories and 56 subcategories using Gene Ontology; 18 580 of them were assigned into 26 functional categories using Clusters of Orthologous Groups of proteins; 16 864 of them were assigned into 5 major categories and 32 subclasses using KEGG. Finally, 1730 genes were differentially expressed (DGEs), 9 up-regulated pathways (protein digestion and absorption, neuroactive ligand-receptor interaction, pancreatic secretion, tyrosine metabolism, amoebiasis, ECM-receptor interaction, riboflavin metabolism, amino sugar and nucleotide sugar metabolism and AGE-RAGE signaling pathway in diabetic complications) were significantly enriched ( q < 0.05), and one down-regulated pathway ( Staphylococcus aureus infection) was significantly enriched ( q < 0.05). Up-regulation of genes in pathways of protein digestion/absorption ( PepT1/SLC15A and ATP1B) and environment information processing ( COL1AS, COL4A; LAMA3_5, LAMB3; FN1 and TN) may imply the potentially positive toxicity resistance mechanisms.

show abstract

“…We hypothesized that Ni and Co are less likely to be toxic, as these nutrient metals have been found to be relatively non-toxic to phytoplankton at similar environmental concentrations (Guo et al, 2022;Karthikeyan et al, 2019;Panneerselvam et al, 2018). Hence, we hypothesized that Cr toxicity should be considered as a likely possible scenario (Frey et al, 1983;Kiran et al, 2016).…”

Section: Cyanobacteriamentioning

confidence: 99%

“…Accordingly, we designed another set of experiments to test for both lack of Fe bioavailability and specific sensitivity to Cr, as has been done in previous cyanobacterial studies (Kiran et al, 2016). To do this, we formulated several variants of the olivine leachate: 1) normal OL (100% concentration), 2) OL (100% concentration) with a synthetic ligand (EDTA) that solubilizes Fe(III), and thus makes it broadly bioavailable (OL-EDTA), 3) OL (100% concentration) but with no Cr (OL-noCr), 4) and OL (100% concentration) but with no Cr and with EDTA (OL-EDTA-noCr) (Fig.…”

Section: Cyanobacteriamentioning

confidence: 99%

Responses of globally important phytoplankton species to olivine dissolution products and implications for carbon dioxide removal via ocean alkalinity enhancement

Hutchins

Yang

et al. 2023

Preprint

View full text Add to dashboard Cite

Anthropogenic greenhouse gas emissions are leading to global temperature increases, ocean acidification, and significant ecosystem impacts. Given current emissions trajectories, the IPCC calls for both the rapid abatement of CO2emissions and development of carbon dioxide removal (CDR) strategies that can address legacy emissions and difficult to abate emissions sources. These CDR methods must efficiently and safely sequester gigatons of atmospheric CO2. Coastal Enhanced Weathering (CEW) via the addition of the common mineral olivine to coastal waters is one promising approach to enhance ocean alkalinity for large-scale CDR. As olivine weathers, it releases several biologically active dissolution products, including alkalinity, trace metals, and the nutrient silicate. Released trace metals can serve as micronutrients but may also be toxic at high concentrations to marine biota including phytoplankton that lie at the base of marine food webs. We grew several globally important phytoplankton functional groups under elevated concentrations of olivine dissolution products using a synthetic olivine leachate (OL) based on olivine elemental composition, and monitored their physiological and biogeochemical responses. This allowed us to determine physiological impacts and thresholds at elevated olivine leachate concentrations, in addition to individual effects of specific constituents. We found both positive and neutral responses but no evident toxic effects for two silicifying diatoms, a calcifying coccolithophore, and three cyanobacteria. In both single and competitive co-cultures, silicifiers and calcifiers benefited from olivine dissolution products like iron and silicate or enhanced alkalinity, respectively. The non-N2-fixing picocyanobacterium could use synthetic olivine-derived iron for growth, while N2-fixing cyanobacteria could not. However, other trace metals like nickel and cobalt supported cyanobacterial growth across both groups. Growth benefits to particular phytoplankton groups in situ will depend on species-specific responses and ambient concentrations of other required nutrients. Results suggest olivine dissolution products appear unlikely to cause negative effects for marine phytoplankton, even at high concentrations, and may support growth of particular taxa under some conditions. Future studies can shed light on long-term evolutionary responses to olivine exposure, and on the potential effects that marine microbes may in turn have on olivine dissolution rates and regional biogeochemistry.

show abstract

Environmental toxicity: Exposure and impact of chromium on cyanobacterial species

Cited by 15 publications

References 21 publications

Competitive photo-degradation performance of ZnO modified bentonite clay in water containing both organic and inorganic contaminants

Competitive photo-degradation performance of ZnO modified bentonite clay in water containing both organic and inorganic contaminants

Transcriptome Analysis of Hepatopancreas from the Cr (VI)-Stimulated Mantis Shrimp (Oratosquilla oratoria) by Illumina Paired-End Sequencing: Assembly, Annotation, and Expression Analysis

Responses of globally important phytoplankton species to olivine dissolution products and implications for carbon dioxide removal via ocean alkalinity enhancement

Contact Info

Product

Resources

About