Arsenate and arsenite-induced inhibition and recovery in two diazotrophic cyanobacteria Nostoc muscorum and Anabaena sp.: study on time-dependent toxicity regulation

Patel, Anuradha; Tiwari, Sanjesh; Prasad, Sheo Mohan

doi:10.1007/s11356-021-13800-1

Cited by 9 publications

(5 citation statements)

References 53 publications

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“…Our research findings indicate that the cyanobacteria Nostoc exhibits a superior ability to absorb higher concentrations of arsenic compared to Chlorella . This observation aligns with the arsenic accumulation capabilities reported by Patel et al ( 2021 ) and (Leong and Chang 2020 ). In addition, Nostoc MUM004 demonstrated arsenic tolerance by sustaining its growth through the cultivation period.…”

Section: Discussionsupporting

confidence: 93%

“…Microalgae strains i.e., Nannochloropsis gaditana and Chlorella muelleri removed 95% of metals after 10 days of cultivation. In addition, cyanobacteria Nostoc muscorum and Chlorella vulgaris demonstrated arsenic accumulation capabilities of up to 8300 mg As kg −1 DW (Patel et al 2021 ) and 3890 mg As kg −1 DW (Leong and Chang 2020 ), respectively 5 times and 2.3 times higher than aquatic macrophytes, which accumulate 1543 mg As kg −1 (Mkandawire and Dudel 2005 ). This suggests that microalgae are a more suitable candidate for arsenic bioremediation compared to other organisms.…”

Section: Discussionmentioning

confidence: 99%

“…Nostoc , the cyanobacteria and Chlorella , the green microalgae, have demonstrated the ability to uptake high arsenic concentrations (Patel et al 2021 ; Higashi et al 1985). In this study, an assessment of the growth and arsenic uptake by two microalgae strains Nostoc MUM003 and Chlorella MUM002 strain was conducted, with a particular focus on phosphate as an influence factor to compare the suitability of the microalgae strains in arsenic bioremediation.…”

Section: Introductionmentioning

confidence: 99%

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Microalgae for freshwater arsenic bioremediation: examining cellular toxicity, bioconcentration factor and eluding an alternative arsenic detoxification pathway

Tang,

Foo

2024

3 Biotech

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Microalgae are photoautotrophic organisms in freshwater systems known to uptake and bioremediate arsenic, a heavy metal. In this study, we compared the growth and arsenic uptake of two microalgae strains, Nostoc and Chlorella, to determine their suitability for arsenic bioremediation. As compared to the control, our results showed that treatment with As (III) enhanced the Nostoc growth by approximately 15% when grown in the absence of phosphate. The highest bioconcentration factor of Nostoc at this treatment was 1463.6, whereas 0.10 mg L−1 As (V) treatment improved the Chlorella growth by 25%, in the presence of phosphate. However, arsenic uptake reduced from 175.7 to 32.3 throughout the cultivation period for Chlorella. This suggests that Nostoc has an upper advantage in the bioremediation of arsenic as compared to the Chlorella strain. To gain insights into the potential of Nostoc in arsenic bioremediation, we further conducted SEM analysis on the vegetative cell surface. The SEM results showed that As (III) disrupted the Nostoc vegetative cell surface and structure. Further to this, pathway analysis and polymerase chain reaction (PCR) were conducted to identify the potential arsenic pathway regulated by Nostoc. The primary As (III)-related pathways elucidated include the arsA transporter and arsD complex that require ATP and As (III) methylation to S-adenosylmethionine. The phosphate deficiency condition resulting in the inability to generate ATP caused As (III) could not be excreted from the Nostoc cells, potentially contributing to the high arsenic concentration accumulated under phosphate-depleted conditions. These insights contribute to understanding the efficacy of microalgae strains in freshwater arsenic bioremediation.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Microalgae for freshwater arsenic bioremediation: examining cellular toxicity, bioconcentration factor and eluding an alternative arsenic detoxification pathway

Tang,

Foo

2024

3 Biotech

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“…The seedlings were cultured in the phytotron at 26 • C, 70% humidity, and 10,000 Lx, 16 h light/8 h dark. The nutrient solution was renewed every 3 days to maintain the species of As exposed to the rice [22,23]. After 14 days of exposure, the rice seedlings were harvested, and the shoot and root biomasses were recorded.…”

Section: Rice Cultivation and Experiments Setupmentioning

confidence: 99%

Regulatory Mechanism of Copper Oxide Nanoparticles on Uptake of Different Species of Arsenic in Rice

Shi

Jiang

et al. 2021

Nanomaterials

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Copper oxide nanoparticles (CuO NPs) are widely used as a fungicide in agriculture. The application of CuO NPs in agriculture affects the growth of rice and metal accumulation in rice. However, the mechanism of CuO NPs on arsenic (As) accumulation in rice remains unclear. In this study, a hydroponic culture was produced to investigate the mechanism of the effect of 50 and 100 mg L−1 CuO NPs on As accumulation in rice. Our results showed that CuO NPs decreased As(III/V) accumulation in the roots and shoots by adsorbing As(III/V), oxidizing of As(III) on the surface, and thickening the root cell wall. The addition of CuO NPs regulated the expression of the OsNIP1;1, OsHAC1;1, and OsHAC4 genes, which decreased As(III) transport and promoted As(V) reduction in the roots. Moreover, when CuO NPs were co-exposed to As, a negative correlation between the concentration of Cu and As in rice was also found in our study. However, CuO NPs significantly increased Cu accumulation in rice and constrained the rice growth. In conclusion, CuO NPs might be a promising way to decrease As accumulation in rice, but the negative effects such as growth inhibition should be further considered. Therefore, the application of CuO NPs in rice plants should take a more restrained approach.

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“…There was a correlation between the above responses and plant tolerance to abiotic stress [ 50 ]. Furthermore, non-enzymatic antioxidants are also the key factor that provide tolerance against heavy metal stress [ 51 ]. Ascorbate and glutathione are vital in reducing Pb(II) ions toxicity in Scenedesmus dimorphus [ 52 ].…”

Section: Discussionmentioning

confidence: 99%

Impact of the Arbuscular Mycorrhizal Fungus Funneliformis mosseae on the Physiological and Defence Responses of Canna indica to Copper Oxide Nanoparticles Stress

Luo

Yan

Yang

et al. 2022

JoF

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Copper oxide nanoparticles (nano-CuO) are recognized as an emerging pollutant. Arbuscular mycorrhizal fungi (AMF) can mitigate the adverse impacts of various pollutants on host plants. However, AMF’s mechanism for alleviating nano-CuO phytotoxicity remains unclear. The goal of this study was to evaluate how AMF inoculations affect the physiological features of Canna indica seedlings exposed to nano-CuO stress. Compared with the non-AMF inoculated treatment, AMF inoculations noticeably improved plant biomass, mycorrhizal colonization, leaf chlorophyll contents, and the photosynthetic parameters of C. indica under nano-CuO treatments. Moreover, AMF inoculation was able to significantly mitigate nano-CuO stress by enhancing antioxidant enzyme activities and decreasing ROS levels in the leaves and roots of C. indica, thus increasing the expression of genes involved in the antioxidant response. In addition, AMF inoculation reduced the level of Cu in seedlings and was associated with an increased expression of Cu transport genes and metallothionein genes. Furthermore, AMF inoculations increased the expression levels of organic acid metabolism-associated genes while facilitating organic acid secretion, thus reducing the accumulation of Cu. The data demonstrate that AMF–plant symbiosis is a feasible biocontrol approach to remediate nano-CuO pollution.

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Arsenate and arsenite-induced inhibition and recovery in two diazotrophic cyanobacteria Nostoc muscorum and Anabaena sp.: study on time-dependent toxicity regulation

Cited by 9 publications

References 53 publications

Microalgae for freshwater arsenic bioremediation: examining cellular toxicity, bioconcentration factor and eluding an alternative arsenic detoxification pathway

Microalgae for freshwater arsenic bioremediation: examining cellular toxicity, bioconcentration factor and eluding an alternative arsenic detoxification pathway

Regulatory Mechanism of Copper Oxide Nanoparticles on Uptake of Different Species of Arsenic in Rice

Impact of the Arbuscular Mycorrhizal Fungus Funneliformis mosseae on the Physiological and Defence Responses of Canna indica to Copper Oxide Nanoparticles Stress

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