Symbiosis of microalgae and bacteria consortium for heavy metal remediation in wastewater

Zhao, Dehua; Cheah, Wai Yan; Hin, Lai Sai; Ng, Eng-poh; Khoo, Kuan Shiong; Show, Pau Loke; Ling, Tau Chuan

doi:10.1016/j.jece.2023.109943

Cited by 34 publications

(14 citation statements)

References 130 publications

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“…Understanding the photosynthetic responses of Chlamydomonas sp. 1710 to heavy metals helps develop its potential for treating heavy metal pollution under optimized condition, such as adjusting the illumination to achieve appropriate light energy input under heavy metal stress ( Ji et al, 2018 ; Zhao et al, 2023 ).…”

Section: Resultsmentioning

confidence: 99%

Photosynthetic response of Chlamydomonas reinhardtii and Chlamydomonas sp. 1710 to zinc toxicity

Zhan,

Liu,

et al. 2024

Front. Microbiol.

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Zinc (Zn) is an essential trace element but can lead to water contamination and ecological deterioration when present in excessive amounts. Therefore, investigating the photosynthetic response of microalgae to Zn stress is of great significance. In this study, we assessed the photosynthetic responses of neutrophilic Chlamydomonas reinhardtii and acidophilic Chlamydomonas sp. 1710 to Zn exposure for 96 h. The specific growth rate (μ), chlorophyll-a (Chl-a) content, and chlorophyll fluorescence parameters were determined. The results demonstrated that Chlamydomonas sp. 1710 was much more tolerant to Zn than C. reinhardtii, with the half-maximal inhibitory concentration (IC50) values of 225.4 mg/L and 23.4 mg/L, respectively. The μ and Chl-a content of C. reinhardtii decreased in the presence of 15 mg/L Zn, whereas those of Chlamydomonas sp. 1710 were unaffected by as high as 100 mg/L Zn. Chlorophyll fluorescence parameters indicated that the regulation of energy dissipation, including non-photochemical quenching, played a crucial role in Zn stress resistance for both Chlamydomonas strains. However, in the case of C. reinhardtii, non-photochemical quenching was inhibited by 5 mg/L Zn in the first 48 h, whereas for Chlamydomonas sp. 1710, it remained unaffected under 100 mg/L Zn. Chlamydomonas sp. 1710 also exhibited a 20 times stronger capacity for regulating the electron transfer rate than C. reinhardtii under Zn stress. The light energy utilization efficiency (α) of Chlamydomonas sp. 1710 had the most highly non-linear correlation with μ, indicating the energy utilization and regulation process of Chlamydomonas sp. 1710 was well protected under Zn stress. Collectively, our findings demonstrate that the photosystem of Chlamydomonas sp. 1710 is much more resilient and tolerant than that of C. reinhardtii under Zn stress.

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Section: Resultsmentioning

confidence: 99%

Photosynthetic response of Chlamydomonas reinhardtii and Chlamydomonas sp. 1710 to zinc toxicity

Zhan,

Liu,

et al. 2024

Front. Microbiol.

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“…After that, oxygen-utilizing bacteria metabolize organic substances and oxygen, resulting in the emission of carbon dioxide. To form a consortium, these two systems are required to occur ( Zhao et al, 2023 ).…”

Section: Roles Of Microbial Communities In Prementioning

confidence: 99%

“…While numerous studies have investigated the effects of microalgae-bacteria consortiums on the removal of heavy metals from wastewater ( Zhao et al, 2023 , Bashir et al, 2023 ), there is a scarcity of study specifically focused on the utilization of microalgae-bacteria consortiums for the removal of heavy metals from petroleum refinery effluents (PRE).…”

Section: Roles Of Microbial Communities In Prementioning

confidence: 99%

“…Microbial consortia can be designed and used as new biotechnology to serve several tasks in PRE such as enhancing the degradation rate of oil, conversion of chemicals into useful petrochemical products, removal of heavy metals, and nitrogen fixation. Numerous research, have been discussed in this review, investigated the construction and the function of different microbial consortia for example, bacterial consortium ( Sarkar et al, 2020; Lukhele et al, 2021 , Oaikhena et al, 2016 ), microalgal-bacterial ( Gods'gift and Fagade, 2016 , Zhao et al, 2023 ), bacterial-fungal ( Migahed et al, 2016 ), algal-bacterial ( Bashir et al, 2023 ), microalgal-fungal ( de Andrade et al, 2023 ) consortia. That could be achieved also by genetically engineering microbes to elevate their ability in the bioremediation and conversion process.…”

Section: Challenges Limitations and Opportunitiesmentioning

confidence: 99%

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Microbial communities in petroleum refinery effluents and their complex functions

Almutairi

2024

Saudi Journal of Biological Sciences

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“…4,5 In addition, industrial development and social progress have caused increasing pollution of heavy metals in water bodies, which enter living organisms and bind to biological proteins in the organisms, thus destroying the normal mechanisms of the immune system in the organisms. 6 Therefore, the discovery and identification of active substances that can enhance immune function at the same time as controlling adverse reactions as much as possible has become an important goal of current research.…”

Section: Introductionmentioning

confidence: 99%

Sciadonic acid ameliorates cyclophosphamide‐induced immunosuppression by modulating the immune response and altering the gut microbiota

Chen,

Jiang,

Yao

et al. 2024

J Sci Food Agric

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BACKGROUNDCyclophosphamide (Cy) is a frequently used chemotherapeutic drug, but long‐term Cy treatment can cause immunosuppression and intestinal mucosal damage. The intestinal mucosal barrier and gut flora play important roles in regulating host metabolism, maintaining physiological functions and protecting immune homeostasis. Dysbiosis of the intestinal flora affects the development of the intestinal microenvironment, as well as the development of various external systemic diseases and metabolic syndrome.RESULTSThe present study investigated the influence of sciadonic acid (SA) on Cy‐induced immunosuppression in mice. The results showed that SA gavage significantly alleviated Cy‐induced immune damage by improving the immune system organ index, immune response and oxidative stress. Moreover, SA restored intestinal morphology, improved villus integrity and activated the nuclear factor κB signaling pathway, stimulated cytokine production, and reduced serum lipopolysaccharide (LPS) levels. Furthermore, gut microbiota analysis indicated that SA increased t beneficial bacteria (Alistipes, Lachnospiraceae_NK4A136_group, Rikenella and Odoribacter) and decreased pathogenic bacteria (norank‐f‐Oscillospiraceae, Ruminococcus and Desulfovibrio) to maintain intestinal homeostasis.CONCLUSIONThe present study provided new insights into the SA regulation of intestinal flora to enhance immune responses. © 2024 Society of Chemical Industry.

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Symbiosis of microalgae and bacteria consortium for heavy metal remediation in wastewater

Cited by 34 publications

References 130 publications

Photosynthetic response of Chlamydomonas reinhardtii and Chlamydomonas sp. 1710 to zinc toxicity

Photosynthetic response of Chlamydomonas reinhardtii and Chlamydomonas sp. 1710 to zinc toxicity

Microbial communities in petroleum refinery effluents and their complex functions

Sciadonic acid ameliorates cyclophosphamide‐induced immunosuppression by modulating the immune response and altering the gut microbiota

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