Salinity driven stress to enhance lipid production in Scenedesmus vacuolatus: A biodiesel trigger?

Anand, Vishal; Kashyap, Mrinal; Samadhiya, Kanchan; Ghosh, Atreyee; Kiran, Boggavarapu

doi:10.1016/j.biombioe.2019.05.021

Cited by 39 publications

(11 citation statements)

References 37 publications

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“…In addition, the accumulation of osmoprotectant molecules such as proteins, glycerol, proline etc. balance the osmotic pressure induced by sodium chloride and prevents water loss ( Anand et al., 2019 ). In the present study, there was a positive correlation between biomass productivity and osmoprotectant molecules (carbohydrates, proline and polyphenols) as shown in Figure 5 .…”

Section: Resultsmentioning

confidence: 99%

“…( Arora et al., 2019 ). Salt stress induces lipid accumulation in microalgae ( Anand et al., 2019 ). High NaCl concentration (200 mM) significantly increased lipid content (41.1%) in C. reinhardtii compared to the control (20.8%) after 3 days of application ( Hang et al., 2020 ).…”

Section: Resultsmentioning

confidence: 99%

“…To minimize these damages caused by salt stress, microalgae have developed many physiological, metabolic and molecular mechanisms ( Wang et al., 2018 ). These mechanisms include the accumulation of lipids and carbohydrates as storage molecules to maintain microalgae survival ( Anand et al., 2019 ; Gaubert et al., 2019 ). Microalgae accumulate ROS-scavenging enzymes such as catalase (CAT), peroxidase (POD), glutathione reductase (GR), ascorbate peroxidase (APX), superoxide dismutase (SOD), and osmoprotectant molecules such as proline, betaine-glycine and carbohydrates etc., which can also act as ROS scavenging molecules ( Pancha et al., 2015 ; Ismaiel et al., 2018 ; Drira et al., 2021 ).…”

Section: Introductionmentioning

confidence: 99%

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

Fal

Aasfar

Rabie

et al. 2022

Heliyon

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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.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Fal

Aasfar

Rabie

et al. 2022

Heliyon

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“…Bioplastic production from microalgae is considered to be an efficacious strategy for direct carbon entrapment (by mitigating CO 2 produced from flue gas), accompanied by the acquisition of imperative biochemical constituents, including lipids ( Ho et al, 2014 ; Nakanishi et al, 2014 ; Anand et al, 2019 ), proteins ( Schwenzfeier et al, 2011 ), carbohydrates ( Ho et al, 2013 ; Cea-Barcia et al, 2014 ), and PHA ( Roja et al, 2019 ) that can act as potential bioplastic feedstock. Ultimately, establishing the fact that CO 2 sequestered by bioplastic-producing microalgae is directly getting entrapped in the form of polymer and not exiting into the environment ( Abdul-Latif et al, 2020 ; Crocker et al, 2020 ).…”

Section: Prospects Of Bioplastic Production In Pure Culturesmentioning

confidence: 99%

Insightful Advancement and Opportunities for Microbial Bioplastic Production

et al. 2022

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Impetuous urbanization and population growth are driving increased demand for plastics to formulate impeccable industrial and biomedical commodities. The everlasting nature and excruciating waste management of petroleum-based plastics have catered to numerous challenges for the environment. However, just implementing various end-of-life management techniques for assimilation and recycling plastics is not a comprehensive remedy; instead, the extensive reliance on finite resources needs to be reduced for sustainable production and plastic product utilization. Microorganisms, such as bacteria and algae, are explored substantially for their bioplastic production repertoire, thus replacing fossil-based plastics sooner or later. Nevertheless, the utilization of pure microbial cultures has led to various operational and economical complications, opening the ventures for the usage of mixed microbial cultures (MMCs) consisting of bacteria and algae for sustainable production of bioplastic. The current review is primarily focuses on elaborating the bioplastic production capabilities of different bacterial and algal strains, followed by discussing the quintessence of MMCs. The present state-of-the-art of bioplastic, different types of bacterial bioplastic, microalgal biocomposites, operational factors influencing the quality and quantity of bioplastic precursors, embracing the potential of bacteria-algae consortia, and the current global status quo of bioplastic production has been summarized extensively.

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“…Amongst various factors (temperature, light intensity, nutrients, salinity), cultivation time is a critical factor deciding the proportion of biomass constituents in a microalgae species. 22,[24][25][26] Therefore, the storage and production of these chemical constituents need to be studied at various cultivation time and growth phases to decide upon biomass harvesting time and reduce costs in biofuel production.…”

mentioning

confidence: 99%

Bioprospecting of native algal strains with unique lipids, proteins, and carbohydrates signatures: A time dependent study

Samadhiya

Ghosh

Kashyap

et al. 2021

Env Prog and Sustain Energy

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Aim of this study is uncovering potential strains of microalgae from Indore, Madhya Pradesh situated in central India with a diverse climate for sustainable production of different bio-products. Assessing the entire biochemical profile is crucial to select species-specific metabolites for sustainability of algal bio-refinery processes. In the current study, seven algal species (C. proboscideum, Desmodesmus psuedocommunis, Asterarcys quadricellulare, Ettlia texensis, Pediludiela daitoensis, Coelastrella sp., Pectinodesmus sp.) were isolated and identified using Internal Transcribed Spacer (ITS) and 18 s rRNA sequences, and these species found to be from the Chlorophyta phylum. The highest biomass productivity (51.25 ± 1.96 μg/ml/day) with chlorophyll content (33.07 ± 0.63 μg/ml) was observed in A. quadricellulare on 21st day (P < 0.0001). Biochemical profiling of isolated species showed each species is unique in its biochemical composition (total lipids, carbohydrates, and proteins). Coelastrella sp. and Pectinodesmus sp. was found to be accumulating considerable quantities of (P < 0.0001) carbohydrates (303.3 ± 1.11 μg/mg dry cell weight) and lipids (212.67 ± 2.53 μg/mg per dry cell weight), respectively. Whereas P. daitoensis was found best (P < 0.0001) for protein production (205.78 ± 2.56 μg/mg dry cell weight), on 21st day. Highest total fatty acid content was detected in Pectinodesmus sp. (115.74 μg/ mg) on 21st day, which has shown good saturated fatty acid (SFA) and mono unsaturated fatty acid (MUFA) percentage, inflicting high quality biodiesel production. Confocal microscopy further supported the data. Assessing the biochemical profile at different phases of growth for each species therefore reduce the production time of biofuels as well as make this process much more cost-effective.

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Salinity driven stress to enhance lipid production in Scenedesmus vacuolatus: A biodiesel trigger?

Cited by 39 publications

References 37 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

Insightful Advancement and Opportunities for Microbial Bioplastic Production

Bioprospecting of native algal strains with unique lipids, proteins, and carbohydrates signatures: A time dependent study

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