The metabolic mechanisms of Cd-induced hormesis in photosynthetic microalgae, Chromochloris zofingiensis

Zhang, Yushu; Sun, Dongzhe; Gao, Weizheng; Zhang, Xinwei; Ye, Wenqi; Zhang, Zhao

doi:10.1016/j.scitotenv.2023.168966

Science of The Total Environment

2024

DOI: 10.1016/j.scitotenv.2023.168966

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The metabolic mechanisms of Cd-induced hormesis in photosynthetic microalgae, Chromochloris zofingiensis

Yushu Zhang,

Dongzhe Sun,

Weizheng Gao

et al.

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Cited by 4 publications

References 69 publications

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Heavy Metal-Induced Phyto-Hormetic Morpho-Physio-Biochemical Adjustments: A Critical Review

Dhiman,

Singh,

Kour

et al. 2024

J Plant Growth Regul

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Heavy Metal-Induced Phyto-Hormetic Morpho-Physio-Biochemical Adjustments: A Critical Review

Dhiman,

Singh,

Kour

et al. 2024

J Plant Growth Regul

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Hormetic responses to cadmium exposure in wheat seedlings: insights into morphological, physiological, and biochemical adaptations

Jiao,

Li,

et al. 2024

Environ Sci Pollut Res

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Dual Role of Cu²⁺ in the Physiological Growth and Metabolism of Microcystis aeruginosa

Zhang,

Wu,

Lei

et al. 2024

ACS EST Water

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Cyanobacterial bloom is prevalent in freshwater of China and usually controlled by CuSO4. However, the remaining available Cu2+ effects on cyanobacterial growth and metabolism have not been fully investigated. Therefore, we here investigated different CuSO4 concentrations on the growth and metabolism of typical toxic cyanobacteria, Microcystis aeruginosa. The results showed that low CuSO4 concentrations (<0.1 mg/L) facilitate algal growth, photosynthesis, and enzyme activity activities. Conversely, high CuSO4 concentrations (>0.1 mg/L) inhibited the growth and markedly reduced the photosynthesis of oxidative enzymes. Notably, the algae secreted more extracellular polysaccharides (EPS) and released microcystin to mitigate the high Cu2+ stress compared to low concentrations. Moreover, the results illustrated how Cu2+ influenced the expression of key genes on the mRNA level. Specifically, capD (coded for polysaccharides), mcy (microcystin), and furA (mcy promoter) genes, were upregulated in high CuSO4 concentrations, while the photosynthetic rbcL gene was downregulated. The furA regulated the mcy gene cluster promoter, which indirectly mediated the microcystin release. The upregulation of the complex genes revealed the intricate genetic responses of M. aeruginosa to Cu2+ stress. This study explored the dual roles of CuSO4 in algae growth and molecular mechanisms, providing a new perspective on understanding the risks of algaecides application.

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The metabolic mechanisms of Cd-induced hormesis in photosynthetic microalgae, Chromochloris zofingiensis

Cited by 4 publications

References 69 publications

Heavy Metal-Induced Phyto-Hormetic Morpho-Physio-Biochemical Adjustments: A Critical Review

Heavy Metal-Induced Phyto-Hormetic Morpho-Physio-Biochemical Adjustments: A Critical Review

Hormetic responses to cadmium exposure in wheat seedlings: insights into morphological, physiological, and biochemical adaptations

Dual Role of Cu²⁺ in the Physiological Growth and Metabolism of Microcystis aeruginosa

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The metabolic mechanisms of Cd-induced hormesis in photosynthetic microalgae, Chromochloris zofingiensis

Cited by 4 publications

References 69 publications

Heavy Metal-Induced Phyto-Hormetic Morpho-Physio-Biochemical Adjustments: A Critical Review

Heavy Metal-Induced Phyto-Hormetic Morpho-Physio-Biochemical Adjustments: A Critical Review

Hormetic responses to cadmium exposure in wheat seedlings: insights into morphological, physiological, and biochemical adaptations

Dual Role of Cu2+ in the Physiological Growth and Metabolism of Microcystis aeruginosa

Contact Info

Product

Resources

About

Dual Role of Cu²⁺ in the Physiological Growth and Metabolism of Microcystis aeruginosa