The synergistic effects of gamma-aminobutyric acid and salinity during the enhancement of microalgal lipid production in photobioreactors

Zhao, Yongteng; Li, Qingqing; Gu, Dan; Yu, Lei; Yu, Xuya

doi:10.1016/j.enconman.2022.115928

Cited by 21 publications

(4 citation statements)

References 69 publications

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“…5 ), which may potentially be considered an adaptive response against the imposed stress (Cheng et al 2016 ; Movafeghi et al 2019 ). In this regard, Zhao et al ( 2022 ) reported the upregulation of CAT , APX , and POD genes (and hence activity) in the green microalga Ankistrodesmus sp. to cope with the increased ROS levels under salinity stress.…”

Section: Discussionmentioning

confidence: 99%

“…(Pietryczuk et al 2014 ; Singh et al 2018 ). The hazardous effect of high salinity may come from direct osmotic stress, imbalance of cellular ions, dehydration, and the high production of different ROS, which causes oxidative damage to the cell (Chen et al 2015 ; Mallik et al 2011 ; Pietryczuk et al 2014 ; Singh et al 2018 ; Wang and Ki 2020 ; Zhao et al 2022 ).…”

Section: Introductionmentioning

confidence: 99%

“…The increased activity of SOD (in addition to other antioxidants) in different algae of Cyanophyta, Chlorophyta, Rhodophyta, and Bacillariophyta under heavy metal and salinity stress has been reported in the literature. However, high doses of heavy metals or salts and/or prolonged exposure may lower the SOD activity (Antoni et al 2021 ; Nowicka 2022 ; Önem et al 2018 ; Pietryczuk et al 2014 ; Zhao et al 2022 ). Yet, despite the studies that highlight the essential role of FeSOD under different heavy metals and salinity stress (Mallik et al 2011 ; Okamoto et al 2001 ; Pinto et al 2003 ), further investigation is needed to identify, and discriminate between the SOD isoforms present in different eukaryotic algae and to compare their roles under environmental stress.…”

Section: Introductionmentioning

confidence: 99%

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Antioxidant enzymes of Pseudochlorella pringsheimii under two stressors: variation of SOD Isoforms activity

Ismaiel

Piercey‐Normore

2023

J Plant Res

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Algae are always facing the challenge of exposure to different stress conditions, therefore raising challenges of adaptation for survival. In this context, the growth and the antioxidant enzymes of the green stress-tolerant alga Pseudochlorella pringsheimii were investigated under two environmental stresses viz. iron and salinity. The number of algal cells was moderately increased by iron treatment in the range of 0.025–0.09 mM of iron, yet, the number of cells decreased at high iron concentrations (0.18 to 0.7 mM Fe). Furthermore, the different NaCl concentrations (8.5–136.0 mM) had an inhibitory effect on the algal cell number, compared to the control.The superoxide dismutase (SOD) showed three isoforms namely; Mn, Fe, and Cu/Zn SOD. The in gel and in vitro (tube-test) activities of FeSOD were higher compared with the other SOD isoforms. The activity of total SOD and its isoforms increased significantly by the different concentrations of Fe and non-significantly by NaCl. The maximum SOD activity was recorded at 0.7 mM Fe (67.9% above control). The relative expression of FeSOD was high under iron and NaCl at 8.5 and 34 mM, respectively. However, FeSOD expression was reduced at the highest NaCl tested concentration (136 mM). In addition, the antioxidant enzyme activity of catalase (CAT) and peroxidase (POD) were accelerated by increasing iron and salinity stress which indicates the essential role of these enzymes under stress. The correlation between the investigated parameters was also investigated. A highly significant positive correlation between the activity of total SOD and its isoforms, and with the relative expression of FeSOD was observed.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Antioxidant enzymes of Pseudochlorella pringsheimii under two stressors: variation of SOD Isoforms activity

Ismaiel

Piercey‐Normore

2023

J Plant Res

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“…Although the yield and composition of lipids are not always linked to the biomass produced after co-culture, they are closely related to the conditions under which fungi and microalgae grow (Leng et al, 2021). Studies have shown that certain environmental conditions, such as high salt levels, pH, and nutrient starvation, can stimulate the synthesis of triacylglyceride (TAG) (Li et al 2017;Bibi et al 2022;Zhao et al 2022). Although TAG has no definite structural function, it can still function efficiently as a cellular storage device for both energy and carbon (Morales et al, 2021).…”

Section: Microalgae/fungi Co-culture Improves Biofuel Productionmentioning

confidence: 99%

Exploring The Potential of Microalgae-Fungi Co-Cultivation for Sustainable Bioprocessing in Microalgae Biorefinery

Usman,

Kamaroddin,

Sani

et al. 2023

MAB

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Developing co-cultivation systems involving microalgae and fungi has shown promising potential for microalgae harvesting technology. As discussed in this review, the co-cultivation of microalgae and fungi has emerged as a novel approach for enhancing biomass and lipid production, wastewater treatment, biofuel production, and high-value products. However, despite being used for a few years, this technique is still in its early stages of development and has yet to be widely applied in the industry. The main challenges associated with co-cultivation include designing effective cultivation systems, managing nutrient requirements, selecting compatible strains, and implementing contamination control measures. In this study, bibliometric analysis was conducted (using the Web of Science database) to examine global trends and developments in microalgae-fungi co-cultivation research between 2014 and 2023, which aimed to identify the research progression, prominent contributors, and leading countries in the research field. The dataset comprised 682 articles, 242 reviews, 31 book chapters, and 22 conference papers. The results showed a rapid increment of publications with China as an active nation in this research area, followed by India, the USA, Italy, Spain, etc. As demonstrated in this study, the immense potential of co-cultivation techniques suggests further exploration, particularly in employing different microalgae species with exceptional characteristics in conjunction with non-pathogenic and edible fungi for profitable industrialization.

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Use of plant growth regulators and their combined application to enhance lipid productivity in the filamentous microalga Tribonema sp.

Wang,

Liu,

et al. 2024

Algal Research

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The synergistic effects of gamma-aminobutyric acid and salinity during the enhancement of microalgal lipid production in photobioreactors

Cited by 21 publications

References 69 publications

Antioxidant enzymes of Pseudochlorella pringsheimii under two stressors: variation of SOD Isoforms activity

Antioxidant enzymes of Pseudochlorella pringsheimii under two stressors: variation of SOD Isoforms activity

Exploring The Potential of Microalgae-Fungi Co-Cultivation for Sustainable Bioprocessing in Microalgae Biorefinery

Use of plant growth regulators and their combined application to enhance lipid productivity in the filamentous microalga Tribonema sp.

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