The influence of different CO2 concentrations on the biochemical and molecular response of two isolates of Dunaliella sp. (ABRIINW-CH2 and ABRIINW-SH33)

Moghimifam, Roya; Niknam, Vahid; Ebrahimzadeh, Homeira; Hejazi, Mohammad Amin

doi:10.1007/s10811-019-01914-6

Cited by 14 publications

(11 citation statements)

References 83 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In accordance, a previous study showed significant accumulation of polyphenols in Acutodesmus dimorphus under 200 mM NaCl conditions 149.24 μg g −1 FW compared to 138.49 μg g −1 FW in the control after 3 days of culture ( Chokshi et al., 2017 ). SOD act as the first line of defense against ROS, these enzymes protect cells from oxidative stress by the dismutation of superoxide radical to molecular oxygen and H 2 O 2 ( Singh et al., 2018 ; Moghimifam et al., 2020 ; Zhang et al., 2020 ). In the present study, the activity of SOD decreased significantly under 200 mM NaCl conditions.…”

Section: Resultsmentioning

confidence: 99%

Salt induced oxidative stress alters physiological, biochemical and metabolomic responses of green microalga Chlamydomonas reinhardtii

Fal

Aasfar

Rabie

et al. 2022

Heliyon

View full text Add to dashboard Cite

Salinity is one of the most significant environmental factors limiting microalgal biomass productivity. In the present study, the model microalga Chlamydomonas reinhardtii ( C. reinhardtii ) was exposed to 200 mM NaCl for eight days to explore the physiological, biochemical and metabolomic changes. C. reinhradtii exhibited a significant decrease in growth rate, and Chl a and Chl b levels. 200 mM NaCl induced ROS generation in C. reinhardtii with increase in H 2 O 2 content. This caused lipid peroxidation with increase in MDA levels. C. reinhardtii also exhibited an increase in carbohydrate and lipid accumulation under 200 mM NaCl conditions as storage molecules in cells to maintain microalgal survival. In addition, NaCl stress increased the content of carotenoids, polyphenols and osmoprotectant molecules such as proline. SOD and APX activities decreased, while ROS-scavenger enzymes (POD and CAT) decreased. Metabolomic response showed an accumulation of the major molecules implicated in membrane remodelling and stress resistance such oleic acid (40.29%), linolenic acid (19.29%), alkanes, alkenes and phytosterols. The present study indicates the physiological, biochemical and metabolomic responses of C. reinhardtii to salt stress.

show abstract

Section: Resultsmentioning

confidence: 99%

Salt induced oxidative stress alters physiological, biochemical and metabolomic responses of green microalga Chlamydomonas reinhardtii

Fal

Aasfar

Rabie

et al. 2022

Heliyon

View full text Add to dashboard Cite

show abstract

“…One of the consequences of stress is an increase in EPS production, to protect the cells [54]. In addition, increased ROS can oxidize membranes and proteins, so that EPS production can occur in an attempt to replace the molecules destroyed [53]. No significant differences in either ROS or EPS production were observed in Synechocystis sp.…”

Section: Discussionmentioning

confidence: 99%

“…Different types of stress are known to increase ROS production, as found for Dunaliella sp. microalgae, for which it was observed that the amounts of H 2 O 2 were higher in the strains grown under 0.03% of CO 2 (near current atmospheric levels) than those grown at 10% [53]. One of the consequences of stress is an increase in EPS production, to protect the cells [54].…”

Section: Discussionmentioning

confidence: 99%

Effect of Inorganic Carbon Concentration on the Development of Subaerial Phototrophic Biofilms on Granite

2020

View full text Add to dashboard Cite

Organisms living at the stone–air interface are expected to be affected by changes in the atmospheric composition due to greenhouse gases emissions. Increased CO2 concentrations may particularly affect phototrophic microorganisms that colonize stone cultural heritage and form subaerial biofilms. However, little is known about the effects of the environmental changes on microorganisms that colonize stone and the consequences for cultural heritage conservation. In the present study, we investigated how an increase in inorganic carbon concentration affected the development of a subaerial biofilm composed by the cyanobacterium Synechocystis sp. PCC 6803 grown on granite. For this purpose, we established two experiments on biofilm formation, with and without addition of inorganic carbon to the growth medium. Higher concentrations of carbon promoted biofilm growth and increased the concentrations of the photosynthetic pigments chlorophyll a and carotenoids on granite surface, potentially exacerbating the aesthetic impact of these biofilms on stone-made cultural heritage. However, the extracellular polysaccharides produced were not significantly affected by carbon availability, so that physical stone biodeterioration might not be increased by the cyanobacterial matrix. The findings provide valuable data on how the existing global change scenario might affect organisms inhabiting stone cultural heritage and encourage to develop new sustainable treatments and methodologies to prevent biodeterioration and thus preserve stone cultural heritage.

show abstract

“…Não obstante, os resultados relatados acima sugerem que, mesmo quando submetidas a concentrações relativamente elevadas de gás carbônico (>10%, 1 atm) e a condições de restrição nutricional, as culturas de M1B-S podem atingir altas concentrações celulares e fixar apreciáveis quantidades de CO2. Tal comportamento, ideal para o emprego de microrganismos no tratamento de gases de exaustão industriais (3-25% CO2), não é exibido por muitas espécies de microalgas e de bactérias autotróficas avaliadas para a captura de carbono (WATANABE, OHMURA, SAIKI, 1992;MOGHIMIFAM et al, 2019). Liu et al (2019), por exemplo, reportam cultivos em batelada da microalga C. protothecoides nos quais o aumento da concentração de CO2 de 10% para 20% provoca uma redução média de 50% na biomassa final obtida (de 1,08 g/L para 0,55 g/L).…”

Section: Crescimento Sob Diferentes Concentrações De Co2unclassified

“…Desta forma, a Pb,máx e a TCO2,máx a 20% CO2 foram equivalentes a 63,72 mg/L/d e 111,0 mg/L/d, respectivamente, e foram atingidas após 9 dias de incubação (Figura 25 e Figura 26). Embora os resultados obtidos demonstrem que pressões parciais de CO2 acima de 0,05 atm (P=1 atm) podem retardar o crescimento da cepa M1B-S e reduzir as suas produtividades e taxas de fixação de CO2, os parâmetros do crescimento quimioautotrófico de M1B-S, obtidos a 5%, 10 % e 20% CO2 (1 atm), são, de modo geral, equiparáveis aos encontrados em muitos cultivos de microalgas e bactérias autotróficas (MOGHIMIFAM et al, 2019;BAE et al, 2001;DE MORAIS, COSTA, 2007). A fim de ilustrar esta comparação, os próximos parágrafos irão relacionar o desempenho de M1B-S com o de outros microrganismos utilizados na captura de carbono.…”

Section: % Co2unclassified

Seleção e isolamento de bactérias fixadoras de CO2 para a purificação de gases de combustão e de gás natural.

Pletsch¹

View full text Add to dashboard Cite

The influence of different CO2 concentrations on the biochemical and molecular response of two isolates of Dunaliella sp. (ABRIINW-CH2 and ABRIINW-SH33)

Cited by 14 publications

References 83 publications

Salt induced oxidative stress alters physiological, biochemical and metabolomic responses of green microalga Chlamydomonas reinhardtii

Salt induced oxidative stress alters physiological, biochemical and metabolomic responses of green microalga Chlamydomonas reinhardtii

Effect of Inorganic Carbon Concentration on the Development of Subaerial Phototrophic Biofilms on Granite

Seleção e isolamento de bactérias fixadoras de CO2 para a purificação de gases de combustão e de gás natural.

Contact Info

Product

Resources

About