Cell wall thickening in two Ulva species in response to heavy metal marine pollution

Zeroual, Safia; Bakkal, Salah Eddine El; Mansori, Mounir; Lhernould, Sabine; Faugeron-Girard, Céline; Kaoua, Mimoun El; Zehhar, Naïma

doi:10.1016/j.rsma.2020.101125

Cited by 13 publications

(7 citation statements)

References 48 publications

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“…in Swedish waters, as has been previously shown (Olsson, Toth, & Albers, 2020a), and factors influencing fluctuations of such metal content in biomass require further investigation. It has been previously shown that so-called "heavy metals" can influence the thickness of the cell wall in U. intestinalis (Zeroual et al, 2020). However, this cannot Figure 4.…”

Section: Discussionmentioning

confidence: 95%

Effects of geographical location on potentially valuable components in Ulva intestinalis sampled along the Swedish coast

et al. 2020

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Macroalgal biomass has the potential to become an important source of chemicals and commodities in a future biorefinery. Currently, production of macroalgal biomass is expensive and the content of high-value compounds is often low. Therefore, in this study the biochemical composition of Ulva intestinalis along the Swedish west coast and the east coast up to Stockholm was assessed with the aim of determining how the content of potentially valuable compounds, such as rhamnose, iduronic acid and PUFAs, could be maximized by utilizing natural variation in the choice of marine cultivation site. Along the investigated coastline, the salinity dropped from 19.4‰ at high latitudes along the west coast to 5.4‰ at Stockholm. Nitrogen and phosphorus availability varied, while temperature was similar at all locations. The two major components of biomass, carbohydrates and ash, varied inversely with the highest content of ash in the west and carbohydrates in the east. In addition, total fatty acids were significantly higher in west coast samples at 3.2 g 100 g-1 dw, with a higher proportion of mono-and polyunsaturated fatty acids. Some healthbeneficial fatty acids were found, including EPA and DPA, at 10-50 mg 100 g-1 dw, respectively. The metal content and elemental composition varied widely, probably due to the influence of specific local conditions. The P content was correlated with the phosphorus concentration in waters at the locations. In PCA analysis, the monosaccharides constituting the cell wall polysaccharide ulvan were found to vary by geographical location, with higher levels possibly associated with lower salinities. However, only glucuronic acid differed significantly between sites. These results show the considerable geographical variability in the composition of Swedish U. intestinalis and suggest that different salinities could be used to create a lipid-or carbohydrate-rich biomass.

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Section: Discussionmentioning

confidence: 95%

Effects of geographical location on potentially valuable components in Ulva intestinalis sampled along the Swedish coast

et al. 2020

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“…It appeared that U. prolifera accelerated the efflux reaction to excrete excessive copper and damaged proteins out of the cell. Approximately 60% of the unexhausted copper is enriched in the cell wall (Lee et al 2005), resulting in a thickening of the cell wall (U. flexuosa (Andrade et al 2004), U. compressa (Kováčik et al 2018), Ulva rigida, and Ulva intestinalis (Zeroual et al 2020)). Metallothionein and phytochelin are capable of direct copper chelation, and the threshold of Cu 2+ stimulation in cell synthesis is higher than that of the antioxidant glutathione (Navarrete et al 2019).…”

Section: Clearance and Excretion Of Copper By U Proliferamentioning

confidence: 99%

“…This indicates that the regeneration of oxaloacetate in the tricarboxylic acid cycle was inhibited, and the production of FADH2 and NADPH was also reduced. Meanwhile, as a component of the respiratory electron transport chain complex II involved in transferring electrons from succinate to coenzyme Q, the decrease in succinate dehydrogenase [ubiquinone] iron-sulfur subunit 2 resulted in a reduction in the number of electrons that were transferred from succinate to ubiquinone, which reduced ATP synthesis (Andrade et al 2004;Lee et al 2005;Mellado et al 2012;Laporte et al 2016;Kováčik et al 2018;Navarrete et al 2019;Zeroual et al 2020).…”

Section: Copper Inhibition Of Photosynthesis In Ulva Proliferamentioning

confidence: 99%

“…relieves oxidative damage via inherent antioxidants (Wu and Lee 2008;Wu et al 2009;Contreras-Porcia et al 2011;Mellado et al 2012;Kováčik et al 2018;Navarrete et al 2019) followed by structural repair (Laporte et al 2016;Rodriguez et al 2018). Excess copper is chelated by intracellular metallothionein (Laporte et al 2016;Navarrete et al 2019;Zúñiga et al 2020) and phytochelatin (Rijstenbil et al 1998;Mellado et al 2012;Navarrete et al 2019), isolated to the vacuole and cell wall (Andrade et al 2004;Lee et al 2005;Kováčik et al 2018;Zeroual et al 2020), excreted from the cells (Navarrete et al 2019;Celis-Plá et al, 2019), and adsorbed by epiphytic bacteria (Andrade et al 2004). The basic outline of the interaction between Ulva and copper and related mechanisms, has been gradually elucidated.…”

Section: Introductionmentioning

confidence: 99%

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Weakened growth, cell division, and energy metabolism, but enhanced resistance, signaling, and anabolism: responses of Ulva prolifera to copper elucidated by omics

et al. 2021

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Ulva spp. have outstanding survivability in copper-rich environments, but research into the interactions between these algae and copper is required. This study combined transcriptomics, proteomics, and metabolomics to investigate the expression of various metabolites in Ulva prolifera after exposure to 10 mg L −1 of copper sulfate for 12 h. The results showed that copper stress in U. prolifera mainly manifested as a reduction in transcription and translation, which was related to gene expression, protein activity, and metabolite content in cell division and energy metabolism. However, the resistance, signal transduction, and metabolism of U. prolifera were enhanced to respond actively to acute copper stress in many aspects. These findings demonstrate the impact of 12 h of 10 mg L −1 copper sulfate exposure on U. prolifera.

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“…Due to it grows very much between 0-3 meters deep, prevalence in the marine ecosystem, high absorption capacity to the environment and accessible species and easy to collect algae material, it is widely preferred in enviromental studies as biomonitors and bioindicators of potential hazards in marine environments (Cheney et al 2014;Pavoni et al 2003;Zeroual et al 2020). Also, algae are highly preferred bioindicators for the detection of different types of pollution in aquatic environments.…”

Section: Introductionmentioning

confidence: 99%

Determination of polycyclic aromatic hydrocarbons in algae : Giresun coastline-Eastern Black Sea Region

YÜCEL¹

2021

Eurasian Journal of Biological and Chemical Sciences

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Polycyclic aromatic hydrocarbons (PAHs) are often measured in the atmosphere for air grade valuation, and sea creatures for environmental monitoring, in residue and for safety cases in food materials, in biological tissues for health-effects monitoring. In this study, Polycyclic aromatic hydrocarbon (PAH) concentrations in algae of Ulva rigida species, as an environmental indicator, in the spring of 2019 were collected from eigh station in Giresun costline in May. In general, algae samples are extracted by methanol solutions with Soxhlet apparatus. By applying the necessary purification processes to the obtained solution, the concentrations of 16 PAH components were determined with the GC/MS device. The amount of most of the 16 PAH compounds in the Keşap coast algae samples was the highest. The highest amount compounds are found to phenanthrene, fluorene and anthracene, and it is high in Bulancak, Giresun-Central and Keşap sites. It belongs to seaweed samples collected from Piraziz site, which has the lowest values among eight stations. The PAH compound concentration is determined 0.08-340.96 ppb values. In the spring sampling, the lowest value is Espiye and Tirebolu stations with Benzo[a]pyrene compound and the highest value is Keşap station with Phenanthrene compound. Since the benzo [g,h,i]perylene is lower than the detection levels in many stations. The main origins of PAHs were found as both pyrolytic and petrogenic at most stations.

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Cell wall thickening in two Ulva species in response to heavy metal marine pollution

Cited by 13 publications

References 48 publications

Effects of geographical location on potentially valuable components in Ulva intestinalis sampled along the Swedish coast

Effects of geographical location on potentially valuable components in Ulva intestinalis sampled along the Swedish coast

Weakened growth, cell division, and energy metabolism, but enhanced resistance, signaling, and anabolism: responses of Ulva prolifera to copper elucidated by omics

Determination of polycyclic aromatic hydrocarbons in algae : Giresun coastline-Eastern Black Sea Region

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