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Huo S, Wang H, Chen J, Hu X, Zan X, Zhang C, Qian J, Zhu F, Ma H, Elshobary M. A preliminary study on polysaccharide extraction, purification, and antioxidant properties of sugar-rich filamentous microalgae Tribonema minus. J Appl Phycol. [DOI: 10.1007/s10811-021-02630-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Barakat KM, El-Sayed HS, Khairy HM, El-Sheikh MA, Al-Rashed SA, Arif IA, Elshobary ME. Effects of ocean acidification on the growth and biochemical composition of a green alga ( Ulva fasciata) and its associated microbiota. Saudi J Biol Sci 2021; 28:5106-5114. [PMID: 34466088 PMCID: PMC8381011 DOI: 10.1016/j.sjbs.2021.05.029] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 05/11/2021] [Accepted: 05/12/2021] [Indexed: 02/08/2023] Open
Abstract
In marine ecosystems, fluctuations in surface-seawater carbon dioxide (CO2), significantly influence the whole metabolism of marine algae, especially during the early stages of macroalgal development. In this study, the response of the green alga Ulva fasciata for elevating ocean acidification was investigated using four levels of pCO2 ~ 280, 550, 750 and 1050 µatm. Maximum growth rate (6.6% day-1), protein (32.43 %DW) and pigment (2.9 mg/g) accumulation were observed at pCO2-550 with an increase of ~2-fold compared to control. On the other hand, lipid and carbohydrate contents recorded their maximum production (4.23 and 46.96 %DW, respectively) at pCO2-750 while control showed 3.70 and 42.37 %DW, respectively. SDS-PAGE showed the presence of unique bands in response to pCO2, especially at 550 µatm. Dominant associated bacteria was shifted from Halomonas hydrothermalis of control to Vibrio toranzoniae at pCO2-1050. These findings suggest that ocean acidification at 550 µatm might impose noticeable effects on growth, protein, pigments, and protein profile of U. fasciata, which could be a good source for fish farming. While, pCO2-750 was recommended for energetic purpose, due to its high lipid and carbohydrate contents.
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Affiliation(s)
| | - Heba S. El-Sayed
- National Institute of Oceanography and Fisheries (NOIF), Cairo, Egypt
| | - Hanan M. Khairy
- National Institute of Oceanography and Fisheries (NOIF), Cairo, Egypt
- Corresponding authors at: National Institute of Oceanography and Fisheries, NIOF, 11516, Egypt (H.M. Khairy). Botany Department, Faculty of Science, Tanta University, 31527, Tanta, Egypt (M.E. Elshobary).
| | - Mohamed A. El-Sheikh
- Botany & Microbiology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Sarah A. Al-Rashed
- Botany & Microbiology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Ibrahim A. Arif
- Botany & Microbiology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Mostafa E. Elshobary
- Botany Department, Faculty of Science, Tanta University, 31527, Tanta, Egypt
- Corresponding authors at: National Institute of Oceanography and Fisheries, NIOF, 11516, Egypt (H.M. Khairy). Botany Department, Faculty of Science, Tanta University, 31527, Tanta, Egypt (M.E. Elshobary).
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El Shafay SM, Gaber A, Alsanie WF, Elshobary ME. Influence of Nutrient Manipulation on Growth and Biochemical Constituent in Anabaena variabilis and Nostoc muscorum to Enhance Biodiesel Production. Sustainability 2021; 13:9081. [DOI: 10.3390/su13169081] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The present study aims to improve biomass and biochemical constituents, especially lipid production of Anabaena variabilis and Nostoc muscorum by formulating an optimal growth condition using various concentrations of nutrients (NO3−, PO43− and CO32−) for biodiesel production. The supplementation of the three nutrients by +50% showed the maximum dry weight and biomass productivity, while the macromolecule contents were varied. The depletion of N-NO3− by 50% N-NO3− showed the maximum lipid yield (146.67 mg L−1) in A. variabilis and the maximum carbohydrate contents (285.33 mg L−1) in N. muscorum with an increase of 35% and 30% over control of the synthetic medium, respectively. However, variation in P-PO43− and C-CO32− showed insignificant improving results for all biochemical compositions in both cyanobacteria. A. variabilis was the superior species for lipid and protein accumulation; however, N. muscorum showed the maximum carbohydrate content. Accordingly, A. variabilis was selected for biodiesel production. In A. variabilis, −50% N-NO3− resulted in 35% higher lipid productivity compared to the control. Furthermore, the fatty acid profile and biodiesel quality-related parameters have improved under this condition. This study has revealed the strategies to improve A. variabilis lipid productivity for biodiesel production for small-scale in vitro application in terms of fuel quality under low nitrate levels.
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Fokum E, Zabed HM, Ravikumar Y, Elshobary ME, Chandankere R, Zhang Y, Yun J, Qi X. Co-fermentation of glycerol and sugars by Clostridium beijerinckii: Enhancing the biosynthesis of 1,3-propanediol. FOOD BIOSCI 2021. [DOI: 10.1016/j.fbio.2021.101028] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Ashour M, Hassan SM, Elshobary ME, Ammar GAG, Gaber A, Alsanie WF, Mansour AT, El-Shenody R. Impact of Commercial Seaweed Liquid Extract (TAM ®) Biostimulant and Its Bioactive Molecules on Growth and Antioxidant Activities of Hot Pepper ( Capsicum annuum). Plants (Basel) 2021; 10:plants10061045. [PMID: 34064289 PMCID: PMC8224274 DOI: 10.3390/plants10061045] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/12/2021] [Accepted: 05/19/2021] [Indexed: 02/05/2023]
Abstract
Bioactive molecules derived from seaweed extracts are revolutionary bio-stimulants used to enhance plant growth and increase yield production. This study evaluated the effectiveness of a commercially available seaweed liquid extract, namely, True-Algae-Max (TAM®), as a plant growth stimulant on nutritional, and antioxidant activity of Capsicum annuum. Three concentrations of TAM® (0.25, 0.5, and 1%) of various NPK: TAM® ratios were investigated via foliar spray, over 2017 and 2018 cultivation seasons, under greenhouse conditions. TAM® is rich in phytochemical compounds, such as ascorbic acid (1.66 mg g-1), phenolics (101.67 mg g-1), and flavonoids (2.60 mg g-1) that showed good antioxidant activity (54.52 mg g-1) and DPPH inhibition of 70.33%. Promoting measured parameter results stated the extensive potentiality of TAM® application, in comparison with conventional NPK treatment. Yield and composition of C. annuum were significantly improved in all TAM® treated groups, especially the TAM0.5% concentration, which resulted in maximum yield (4.23 Kg m-2) and significant amounts of profuse biological molecules like chlorophyll, ascorbic, phenolic compounds, flavonoids, and total nutrients. Compared to the NPK control treatments, C. annuum treated with TAM0.5% improved the total antioxidant activity of hot Pepper from 162.16 to 190.95 mg g-1. These findings indicate that the extract of seaweed can be used as an environmentally friendly, multi-functional biostimulant in the agricultural field for more sustainable production, in addition to reducing the use of hazardous synthetic fertilizers.
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Affiliation(s)
- Mohamed Ashour
- National Institute of Oceanography and Fisheries, NIOF, Cairo 11516, Egypt
- Correspondence: (M.A.); (M.E.E.)
| | - Shimaa M. Hassan
- Department of Vegetable Crops, Faculty of Agriculture (El-Shatby), Alexandria University, Alexandria 21545, Egypt;
| | - Mostafa E. Elshobary
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt;
- Correspondence: (M.A.); (M.E.E.)
| | - Gamal A. G. Ammar
- Biotechnology Unit, Plant Production Department, Arid Lands Cultivation Research Institute, City of Scientific Research and Technological Applications, Alexandria 21934, Egypt;
| | - Ahmed Gaber
- Department of Biology, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;
| | - Walaa F. Alsanie
- Department of Clinical Laboratories Sciences, The Faculty of Applied Medical Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;
| | - Abdallah Tageldein Mansour
- Animal and Fish Production Department, College of Agricultural and Food Sciences, King Faisal University, P.O. Box 420, Al-Ahsa 31982, Saudi Arabia;
- Fish and Animal Production Department, Faculty of Agriculture (Saba Basha), Alexandria University, Alexandria 21531, Egypt
| | - Rania El-Shenody
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt;
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Hassan SM, Ashour M, Soliman AAF, Hassanien HA, Alsanie WF, Gaber A, Elshobary ME. The Potential of a New Commercial Seaweed Extract in Stimulating Morpho-Agronomic and Bioactive Properties of Eruca vesicaria (L.) Cav. Sustainability 2021; 13:4485. [DOI: 10.3390/su13084485] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
This study aimed to understand the effect of commercial seaweed extract as a biofertilizer, named True-Algae-Max (TAM®), on the yield, nutritional, antioxidant, and cytotoxic activity of Eruca vesicaria. Three concentrations of TAM® (5, 10, and 15%) were studied by foliar spray over the two cultivation years (2016 and 2017) without any chemical fertilizer, along with a control consisting of synthetic nitrogen, phosphorus and potassium (NPK) fertilizers. The yield and composition of E. vesicaria were significantly improved in all treatments, particularly at 10% concentration of TAM®, which resulted in maximum yield (1.99 kg m−2) and significant amounts of chlorophyll, carotenoids, phenolic compounds, flavonoids and total nutrients. Compared to the NPK control, E. vesicaria grown with 10% of TAM® improved total antioxidant activity from 41.80 to 49.36 mg g−1 and cytotoxicity from 25.30 to 60.40% with an IC50 value 85.7 µg mL−1 against the hepatocellular carcinoma cell line (HepG2). These findings indicate that seaweed extract can generally be used as a safe potential multifunctional biofertilizer in the agricultural field. The use of seaweed as a biofertilizer could potentially help mitigate the adverse effects of main nutrient deficiencies, diminishing the use of chemical fertilizers.
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Zaki MA, Ashour M, Heneash AMM, Mabrouk MM, Alprol AE, Khairy HM, Nour AM, Mansour AT, Hassanien HA, Gaber A, Elshobary ME. Potential Applications of Native Cyanobacterium Isolate (Arthrospira platensis NIOF17/003) for Biodiesel Production and Utilization of Its Byproduct in Marine Rotifer (Brachionus plicatilis) Production. Sustainability 2021; 13:1769. [DOI: 10.3390/su13041769] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
To achieve strong, successful and commercial aqua-biotechnological microalgae applications, screening, isolation, molecular identification, and physiological characterizations are needed. In the current study, a native cyanobacteria strain Arthrospira platensis NIOF17/003 was isolated from the surface water of El-Khadra Lake, a saline-alkaline lake located in Wadi El-Natrun, Egypt. The cyanobacterium was phylogenetically identified by 16S rRNA molecular marker and deposited in the GenBank database (accession number MW396472). The late exponential phase of A. platensis NIOF17/003 was reached at the 8th day of growth using Zarrouk medium, with a recorded dry weight (DW) of 0.845 g L−1. The isolated strain showed 52% of protein, 14% of carbohydrate, biomass productivity of 143.83 mg L−1 day−1, 8.5% of lipid, and lipid productivity of 14.37 mg L−1 day−1. In general, the values of cetane number, iodine value, cold filter plugging point (52.9, 85.5 g I2/100 g oil, and −2.2 °C, respectively) of the isolated fatty acid methyl esters are in accordance with those suggested by international standards. Besides, applying algal-free lipid (FL) as biodiesel byproduct in the production of rotifer (Brachionus plicatilis) revealed that a 0.6 g L−1 FL significantly increased the rotifer population females carrying eggs, confirming that FL can be used efficiently for B. plicatilis production. The current study concluded that the new isolate A. platensis NIOF17/003 is a promising strain for double sustainable use in biodiesel production and aquaculture feed.
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Elshobary ME, Zabed HM, Yun J, Zhang G, Qi X. Recent insights into microalgae-assisted microbial fuel cells for generating sustainable bioelectricity. International Journal of Hydrogen Energy 2021. [DOI: 10.1016/j.ijhydene.2020.06.251] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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El‐Khodary GM, El‐Sayed HS, Khairy HM, El‐Sheikh MA, Qi X, Elshobary ME. Comparative study on growth, survival and pigmentation of
Solea aegyptiaca
larvae by using four different microalgal species with emphasize on water quality and nutritional value. Aquacult Nutr 2020. [DOI: 10.1111/anu.13211] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
| | - Heba S. El‐Sayed
- Fish Reproduction Laboratory Aquaculture Division National Institute of Oceanography and Fisheries (NIOF) Egypt
| | - Hanan M. Khairy
- Hydrobiology Laboratory Marine Environmental Division National Institute of Oceanography and Fisheries (NIOF) Egypt
| | - Mohamed A. El‐Sheikh
- Botany & Microbiology Department College of Science King Saud University Riyadh Saudi Arabia
| | - Xianghui Qi
- School of Food & Biological Engineering Jiangsu University Zhenjiang China
| | - Mostafa E. Elshobary
- School of Food & Biological Engineering Jiangsu University Zhenjiang China
- Department of Botany Faculty of Science Tanta University Tanta Egypt
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Huo S, Basheer S, Liu F, Elshobary M, Zhang C, Qian J, Xu L, Arslan M, Cui F, Zan X, Zhu F, Zou B, Ding Q, Ma H. Bacterial intervention on the growth, nutrient removal and lipid production of filamentous oleaginous microalgae Tribonema sp. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.102088] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Elshobary ME, El‐Shenody RA, Abomohra AE. Sequential biofuel production from seaweeds enhances the energy recovery: A case study for biodiesel and bioethanol production. Int J Energy Res 2020. [DOI: 10.1002/er.6181] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Mostafa E. Elshobary
- School of Food & Biological Engineering Jiangsu University Zhenjiang China
- Botany and Microbiology Department, Faculty of Science Tanta University Tanta Egypt
| | - Rania A. El‐Shenody
- Botany and Microbiology Department, Faculty of Science Tanta University Tanta Egypt
| | - Abd El‐Fatah Abomohra
- Botany and Microbiology Department, Faculty of Science Tanta University Tanta Egypt
- Department of Environmental Engineering, School of Architecture and Civil Engineering Chengdu University Chengdu China
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Osman MEH, Abo-Shady AM, Elshobary ME, Abd El-Ghafar MO, Abomohra AEF. Screening of seaweeds for sustainable biofuel recovery through sequential biodiesel and bioethanol production. Environ Sci Pollut Res Int 2020; 27:32481-32493. [PMID: 32506400 DOI: 10.1007/s11356-020-09534-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Accepted: 05/29/2020] [Indexed: 02/05/2023]
Abstract
The present study evaluated the sequential biodiesel-bioethanol production from seaweeds. A total of 22 macroalgal species were collected at different seasons and screened based on lipid and carbohydrate contents as well as biomass production. The promising species was selected, based on the relative increase in energy compounds (REEC, %), for further energy conversion. Seasonal and annual biomass yields of the studied species showed significant variations. The rhodophyte Amphiroa compressa and the chlorophyte Ulva intestinalis showed the highest annual biomass yield of 75.2 and 61.5 g m-2 year-1, respectively. However, the highest annual carbohydrate productivity (ACP) and annual lipid productivity (ALP) were recorded for Ulva fasciata and Ulva intestinalis (17.0 and 3.0 g m-2 year-1, respectively). The later was selected for further studies because it showed 14.8% higher REEC value than Ulva fasciata. Saturated fatty acids (SAFs) showed 73.4%, with palmitic acid as a dominant fatty acid (43.8%). Therefore, biodiesel showed high saturation degree, with average degree of unsaturation (ADU) of 0.508. All the measured biodiesel characteristics complied the international standards. The first route of biodiesel production (R1) from Ulva intestinalis showed biodiesel recovery of 32.3 mg g-1 dw. The hydrolysate obtained after saccharification of the whole biomass (R2) and lipid-free biomass (R3) contained 1.22 and 1.15 g L-1, respectively, reducing sugars. However, bioethanol yield from R3 was 0.081 g g-1 dw, which represented 14.1% higher than that of R2. Therefore, application of sequential biofuel production using R3 resulted in gross energy output of 3.44 GJ ton-1 dw, which was 170.9% and 82.0% higher than R1 and R2, respectively. The present study recommended the naturally-grown Ulva intestinalis as a potential feedstock for enhanced energy recovery through sequential biodiesel-bioethanol production.
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Affiliation(s)
- Mohamed E H Osman
- Botany and Microbiology Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Atef M Abo-Shady
- Botany and Microbiology Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Mostafa E Elshobary
- Botany and Microbiology Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
- School of Food & Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Mahasen O Abd El-Ghafar
- Botany and Microbiology Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Abd El-Fatah Abomohra
- Botany and Microbiology Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt.
- Department of Environmental Engineering, School of Architecture and Civil Engineering, Chengdu University, Chengdu, 610106, China.
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Elshobary ME, El-shenody RA, Ashour M, Zabed HM, Qi X. Antimicrobial and antioxidant characterization of bioactive components from Chlorococcum minutum. FOOD BIOSCI 2020; 35:100567. [DOI: 10.1016/j.fbio.2020.100567] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Elshobary ME, Essa DI, Attiah AM, Salem ZE, Qi X. Algal community and pollution indicators for the assessment of water quality of Ismailia canal, Egypt. Stoch Environ Res Risk Assess 2020. [DOI: 10.1007/s00477-020-01809-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Elshobary ME, Abo-Shady AM, Khairy HM, Essa D, Zabed HM, Qi X, Abomohra AEF. Influence of nutrient supplementation and starvation conditions on the biomass and lipid productivities of Micractinium reisseri grown in wastewater for biodiesel production. J Environ Manage 2019; 250:109529. [PMID: 31518792 DOI: 10.1016/j.jenvman.2019.109529] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 08/30/2019] [Accepted: 09/02/2019] [Indexed: 02/08/2023]
Abstract
Generation of biodiesel from microalgae grown in wastewater can offer a cost-effective approach, whilst wastewaters usually do not contain the optimum concentrations of the essential nutrients and carbon sources that result in lowering the productivities of biomass and lipid. This study aimed to overcome this limitation by manipulating wastewater with various concentrations of nutrients (NO3-, PO43-, Cl- and SO42-) and three carbon sources either individually or in combination to cultivate Micractinium reisseri for biodiesel production. Initially, various dilutions of wastewater were tested and a concentration up to 75% of wastewater showed the highest biomass productivity (0.076 g L-1 d-1) and lipid productivity (0.014 g L-1 d-1). The optimum manipulating conditions for maximum lipid production and the highest productivity required 50% decrease in phosphorous from the concentration of the control medium and supplementation with 1.0 g L-1 of glucose. Under this condition, biomass and lipid productivities increased by 1.7 and 4-folds, respectively, compared to those observed in the control. Furthermore, phosphorous starvation condition in the presence of glucose significantly improved fatty acid profile in the biomass and biodiesel quality related parameters.
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Affiliation(s)
- Mostafa E Elshobary
- School of Food & Biological Engineering, Jiangsu University, 212013, Zhenjiang, China; Botany Department, Faculty of Science, Tanta University, Tanta, Egypt
| | - Atef M Abo-Shady
- Botany Department, Faculty of Science, Tanta University, Tanta, Egypt
| | - Hanan M Khairy
- National Institute of Oceanography & Fisheries, Alexandria, Egypt
| | - Dorya Essa
- Botany Department, Faculty of Science, Tanta University, Tanta, Egypt
| | - Hossain M Zabed
- School of Food & Biological Engineering, Jiangsu University, 212013, Zhenjiang, China
| | - Xianghui Qi
- School of Food & Biological Engineering, Jiangsu University, 212013, Zhenjiang, China.
| | - Abd El-Fatah Abomohra
- Botany Department, Faculty of Science, Tanta University, Tanta, Egypt; Botany Department, School of Energy and Power Engineering, Jiangsu University, 212013, Zhenjiang, China
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M. Abdelsalam I, Elshobary M, M. Eladawy M, Nagah M. Utilization of Multi-Tasking Non-Edible Plants for Phytoremediation and Bioenergy Source-A Review. Phyton 2019. [DOI: 10.32604/phyton.2019.06831] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Ashour M, Elshobary ME, El-Shenody R, Kamil AW, Abomohra AEF. Evaluation of a native oleaginous marine microalga Nannochloropsis oceanica for dual use in biodiesel production and aquaculture feed. Biomass and Bioenergy 2019. [DOI: 10.1016/j.biombioe.2018.12.009] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Elshobary ME, Becker MG, Kalichuk JL, Chan AC, Belmonte MF, Piercey-Normore MD. Tissue-specific localization of polyketide synthase and other associated genes in the lichen, Cladonia rangiferina, using laser microdissection. Phytochemistry 2018; 156:142-150. [PMID: 30296707 DOI: 10.1016/j.phytochem.2018.09.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Revised: 08/25/2018] [Accepted: 09/28/2018] [Indexed: 02/05/2023]
Abstract
The biosynthesis of two polyketides, atranorin and fumarprotocetraric acid, produced from a lichen-forming fungus, Cladonia rangiferina (L.) F. H. Wigg. was correlated with the expression of eight fungal genes (CrPKS1, CrPKS3, CrPKS16, Catalase (CAT), Sugar Transporter (MFsug), Dioxygenase (YQE1), C2H2 Transcription factor (C2H2), Transcription Factor PacC (PacC), which are thought to be involved in polyketide biosynthesis, and one algal gene, NAD-dependent deacetylase sirtuin 2 (AsNAD)), using laser microdissection (LMD). The differential gene expression levels within the thallus tissue layers demonstrate that the most active region for potential polyketide biosynthesis within the lichen is the outer apical region proximal to the photobiont but some expression also occurs in reproductive tissue. This is the first study using laser microdissection to explore gene expression of these nine genes and their location of expression; it provides a proof-of-concept for future experiments exploring tissue-specific gene expression within lichens; and it highlights the utility of LMD for use in lichen systems.
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Affiliation(s)
| | - Michael G Becker
- Department of Biological Sciences, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada.
| | - Jenna L Kalichuk
- Department of Biological Sciences, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada.
| | - Ainsley C Chan
- Department of Biological Sciences, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada.
| | - Mark F Belmonte
- Department of Biological Sciences, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada.
| | - Michele D Piercey-Normore
- Department of Biological Sciences, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada; School of Science and the Environment, Memorial University of Newfoundland (Grenfell Campus), Corner Brook, NL, A2H 5G4, Canada.
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Elshobary ME, Osman ME, Abo-Shady AM, Komatsu E, Perreault H, Sorensen J, Piercey-Normore MD. Algal carbohydrates affect polyketide synthesis of the lichen-forming fungus Cladonia rangiferina. Mycologia 2016; 108:646-56. [PMID: 27091386 DOI: 10.3852/15-263] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 03/16/2016] [Indexed: 02/05/2023]
Abstract
Lichen secondary metabolites (polyketides) are produced by the fungal partner, but the role of algal carbohydrates in polyketide biosynthesis is not clear. This study examined whether the type and concentration of algal carbohydrate explained differences in polyketide production and gene transcription by a lichen fungus (Cladonia rangiferina). The carbohydrates identified from a free-living cyanobacterium (Spirulina platensis; glucose), a lichen-forming alga (Diplosphaera chodatii; sorbitol) and the lichen alga that associates with C. rangiferina (Asterochloris sp.; ribitol) were used in each of 1%, 5% and 10% concentrations to enrich malt yeast extract media for culturing the mycobiont. Polyketides were determined by high performance liquid chromatography (HPLC), and polyketide synthase (PKS) gene transcription was measured by quantitative PCR of the ketosynthase domain of four PKS genes. The lower concentrations of carbohydrates induced the PKS gene expression where ribitol up-regulated CrPKS1 and CrPKS16 gene transcription and sorbitol up-regulated CrPKS3 and CrPKS7 gene transcription. The HPLC results revealed that lower concentrations of carbon sources increased polyketide production for three carbohydrates. One polyketide from the natural lichen thallus (fumarprotocetraric acid) also was produced by the fungal culture in ribitol supplemented media only. This study provides a better understanding of the role of the type and concentration of the carbon source in fungal polyketide biosynthesis in the lichen Cladonia rangiferina.
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Affiliation(s)
- Mostafa E Elshobary
- Department of Biological Sciences, University of Manitoba, Winnipeg, Manitoba R3T 2N2; and Department of Botany, University of Tanta, Egypt
| | - Mohamed E Osman
- Department of Botany, Faculty of Science, University of Tanta, Egypt
| | - Atef M Abo-Shady
- Department of Botany, Faculty of Science, University of Tanta, Egypt
| | - Emy Komatsu
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2
| | - Hélène Perreault
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2
| | - John Sorensen
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2
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Elshobary ME, Osman MEH, Abushady AM, Piercey-Normore MD. Comparison of Lichen-Forming Cyanobacterial and Green Algal Photobionts with Free-Living Algae. Cryptogamie, Algologie 2015. [DOI: 10.7872/crya.v36.iss1.2015.81] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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