Effects of modified clay on the physiological and photosynthetic activities of Amphidinium carterae Hulburt

Liu, Shuya; Yu, Zhiming; Song, Xiuxian; Cao, Xihua

doi:10.1016/j.hal.2017.10.007

Cited by 28 publications

(18 citation statements)

References 34 publications

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“…In this study, based on the changes in P. globosa solitary cell abundances, it was apparent that treatment with MC could inhibit P. globosa growth, and the inhibition efficiency was positively correlated with the MC concentrations. These results were consistent with previous studies on Aureococcus anophagefferens and Karenia mikimotoi [ 29 , 31 ].…”

Section: Discussionsupporting

confidence: 94%

“…Zhu et al found that residual cells after MC treatment showed deformation, irregular depressions and other cell damage [ 44 ]. Evidence from physio-biochemistry and transcriptome analyses has also shown that MC treatment can induce reactive oxygen species (ROS) in residual cells, which leads to oxidative damage and disrupted physiological processes, and inhibited their growth [ 29 , 30 ]. In this study, based on the changes in P. globosa solitary cell abundances, it was apparent that treatment with MC could inhibit P. globosa growth, and the inhibition efficiency was positively correlated with the MC concentrations.…”

Section: Discussionmentioning

confidence: 99%

“…However, based on previous field experience, a removal efficiency of 70–80% is sufficient to control HABs, and the algal cells in the upper water do not regrow or contribute to a second bloom. Laboratory investigations on Aureococcus anophagefferens and Karenia mikimotoi showed that MC can disrupt the normal physiological processes in cells by inducing oxidative stress, inhibiting photosynthesis or causing other damage [ 29 , 30 , 31 ]. Moreover, water quality changes (such as the adsorption of nutrients and the effect of “mutual shading”) caused by MC were also explained by the inhibited growth of residual cells [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

“…Cao et al found that MC could effectively flocculate and settle P. globosa solitary cells and colonies [ 20 ], but the effects of MC on P. globosa cell growth and colony formation remained unclear. As previously mentioned, P. globosa tends to form colonies in resistance to environmental stresses [ 34 , 35 ], and MC presented indirect effects in controlling the growth of HABs [ 29 , 30 , 31 ]. Therefore, we assumed that the growth and colony formation of the remaining cells might be inhibited after MC treatment, which could potentially prevent the P. globosa blooms.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Modified Clay on Phaeocystis globosa Growth and Colony Formation

Ren

Qiu

et al. 2021

IJERPH

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Phaeocystis globosa is a globally distributed harmful algal blooms (HABs) species dominated by the colonial morphotype, which presents dramatic environmental hazards and poses a threat to human health. Modified clay (MC) can effectively flocculate HAB organisms and prevent their subsequent growth, but the effects of MC on colony-dominated P. globosa blooms remain uncertain. In this paper, a series of removal and incubation experiments were conducted to investigate the growth, colony formation and colony development of P. globosa cells after treatment with MC. The results show that the density of colonies was higher at MC concentrations below 0.2 g/L compared to those in the control, indicating the role of P. globosa colonies in resistance to environmental stress. Concentrations of MC greater than 0.2 g/L could reduce the density of solitary cells and colonies, and the colony diameter and extracellular polysaccharide (EPS) content were also decreased. The adsorption of MC to dissolved inorganic phosphorus (DIP) and the cell damage caused by collision may be the main mechanisms underlying this phenomenon. These results elucidate that the treatment with an appropriate concentration of MC may provide an effective mitigation strategy for P. globosa blooms by preventing their growth and colony formation.

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Section: Discussionsupporting

confidence: 94%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Modified Clay on Phaeocystis globosa Growth and Colony Formation

Ren

Qiu

et al. 2021

IJERPH

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“…Additionally, inhibition of photosynthesis and oxidative stress was observed in nonflocculated Amphidinium cells after treatment with PAC‐modified clays (0.25 g L −1 ) (Liu et al . ). In consequence, modified clays would have a positive effect on preventing HAB reappearance.…”

Section: Chemical and Physical–chemical Methodsmentioning

confidence: 97%

A critical review on control methods for harmful algal blooms

Gallardo

Astuya-Villalón

Llanos-Rivera

et al. 2018

Reviews in Aquaculture

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The impacts of harmful algal blooms on human health, tourism, fisheries and ecosystems have increased in recent decades. Eutrophication and the feared climate change are believed to further challenge authorities and those whose activity depends on coastal resources. While in most of the affected countries, regulatory steps have been taken to protect consumers of contaminated food, there has been an unequal focus on management systems. Some countries such as EEUU and Canada have focused on monitoring and prediction programs, whereas others (e.g. Korea, China) have relied on direct control of blooms in the sea. Here, we review current control methods for HABs including their fundamentals and the last scientific advances. A thorough revision of all considered approaches so far has been included. Ecological studies of the impact of the countermeasures were also considered.

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The mechanism of a new type of modified clay controlling Phaeocystis globosa growth

Qiu

Cao

et al. 2020

J. Ocean. Limnol.

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Effects of modified clay on the physiological and photosynthetic activities of Amphidinium carterae Hulburt

Cited by 28 publications

References 34 publications

Effects of Modified Clay on Phaeocystis globosa Growth and Colony Formation

Effects of Modified Clay on Phaeocystis globosa Growth and Colony Formation

A critical review on control methods for harmful algal blooms

The mechanism of a new type of modified clay controlling Phaeocystis globosa growth

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