Article
Plant Sciences
Nobuyuki Takatani, Makoto Uenosono, Yuriko Hara, Hisanori Yamakawa, Yuichi Fujita, Tatsuo Omata
Summary: The CLD1 and PPH proteins are characterized as dephytylases for chlorophylls and pheophytin a, respectively. Homologs of CLD1 and PPH were found in cyanobacteria, and these proteins showed similar dephytylase activities but different kinetic properties. Transcription of dphA1 and dphA3 was enhanced under high-light conditions, while dphA2 was not affected. Mutants lacking the DphA proteins did not show significant growth defects, but the triple mutant exhibited more profound growth retardation and slower repair of photodamaged PSII under high-light conditions.
PLANT AND CELL PHYSIOLOGY
(2022)
Review
Chemistry, Multidisciplinary
Enrique Gonzalez Bautista, Celine Laroche
Summary: In recent years, studies have been developed to establish a sustainable biofuel production sector in order to address the scarcity of fossil fuels. This new sector must be efficient, economically profitable, and ethical. The production of bioethanol is mainly based on the fermentation of reserve sugars in microalgae and cyanobacteria, with Spirulina being one of the most cultivated cyanobacteria for bioethanol production.
APPLIED SCIENCES-BASEL
(2021)
Article
Environmental Sciences
Sajjad Abbasi, Sahar Amiranipour, Javad Karimi, Sasan Mohsenzadeh, Andrew Turner
Summary: Microalgae, which play critical roles in the food web and biogeochemical cycling, are commercially exploited for the compounds they produce. This study investigated the effects of microplastic contamination on Spirulina, a widely distributed and commercially important cyanobacterium. The results showed that increasing concentrations of microplastics led to a decrease in growth rate and photosynthetic activity, as well as oxidative stress and production of proline. Microplastics were observed to adhere or aggregate around fragmented regions, potentially providing a mechanism for internalization.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Oranit Kraseasintra, Yingmanee Tragoolpua, Hataichanok Pandith, Ruttiros Khonkarn, Wasu Pathom-aree, Jeeraporn Pekkoh, Chayakorn Pumas
Summary: This study assessed the biological qualities of phycocyanin for use in natural hair dye products and found that it is non-toxic to human cells, has good dyeability potential, and exhibits physical stability.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Nikita Yushin, Inga Zinicovscaia, Liliana Cepoi, Tatiana Chiriac, Ludmila Rudi, Dmitrii Grozdov
Summary: Yttrium is an important element in industry and technology. Researchers found that the cyanobacteria Arthrospira platensis can effectively recover Y(III) from contaminated wastewater through biosorption and bioaccumulation processes. The study investigated the adsorption behavior of Arthrospira platensis under different conditions and found that a pH of 3, temperature of 20 degrees C, and adsorption time of 3 min resulted in the maximum adsorption capacity. In addition, Arthrospira platensis was able to remove up to 70% of Y(III) from the solution in bioaccumulation experiments, with no significant negative impact on biomass productivity and photosynthetic pigments content.
Article
Multidisciplinary Sciences
Jingnan Zhang, Huiting Xue, Sirui Yan, Haibo Shi, Ling Du, Junfeng Zhang, Da Huo, Ruiping Hu, Hong Yuan, Chunli Ma
Summary: This study investigated the growth rate and taxonomic relationships of different Arthrospira strains from Inner Mongolia. Results showed similarities in genetic relationships among strains from Ordos alkaline lake and Hasu Sea in Hohhot. Phylogenetic analysis indicated the genetic closeness between certain strains.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Ioana Brezestean, Maricel Bocaneala, Ana Maria Raluca Gherman, Sebastian Alin Porav, Irina Kacso, Elena Rakosy-Tican, Nicoleta Elena Dina
Summary: This study utilized Raman and Fourier-transform infrared (FTIR) spectroscopies to monitor and analyze exopolysaccharides (EPS) components extracted from Arthrospira platensis, aiming to empower microbiological byproducts as competitive and affordable industrial staple products.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Medicinal
Saly Gheda, Eman H. F. Abd El-Zaher, Alaa M. Abou-Zeid, Nesma A. Bedair, Leonel Pereira
Summary: This research evaluated the antifungal effectiveness of Arthrospira platensis extracts against pathogenic fungi and assessed their antioxidant and cytotoxicity effects. The methanol extract showed the highest inhibition zones against Candida albicans. In vivo, the extract cream successfully removed Candida spherical plastopores. The extract also exhibited strong cytotoxic activity against the HepG2 cell line and moderate cytotoxic activity against MCF7 and Hela cells.
Article
Environmental Sciences
Xiaohua Jiang, Dabin Wang, Weiran Wu, Fengmin Li
Summary: This study investigated the inhibitory effects of two widely used antibiotics, Norfloxacin (NFX) and sulfadiazine (SDZ), on Arthrospira platensis. The results showed that A. platensis was more sensitive to NFX than SDZ. The findings provide important support for the application of A. platensis in reducing water pollution and recovering biomass resources.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Biotechnology & Applied Microbiology
Monika Mahesh Jangir, Shibasish Chowdhury, Vani Bhagavatula
Summary: The study revealed that alkaline stress affects cyanobacteria mainly in terms of chlorophyll, PSII and PSI activities, with Arthrospira platensis NIES-39 showing greater adaptability compared to Arthrospira platensis PCC 7345. However, alkaline stress can lead to changes in the cellular ultrastructure of cyanobacteria.
INTERNATIONAL MICROBIOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Gloria Isani, Alberto Niccolai, Giulia Andreani, Thomas Dalmonte, Elisa Bellei, Martina Bertocchi, Mario R. Tredici, Liliana Rodolfi
Summary: This study investigated the effects of varying iron concentrations on the biochemical composition and iron bioaccumulation in cyanobacteria. The results revealed a close relationship between iron concentration in the culture media and the iron content in the biomass. The study also investigated the iron speciation and the role of C-phycocyanin as an iron binding protein.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biotechnology & Applied Microbiology
Eleni Kougia, Efstathia Ioannou, Vassilios Roussis, Ioannis Tzovenis, Imene Chentir, Giorgos Markou
Summary: Iron deficiency anemia (IDA) is a common nutritional disorder and cyanobacterium Arthrospira platensis could be a potential dietary source of iron to address IDA. Biofortification of Arthrospira with iron was investigated and FeCl3 significantly increased iron content (approximately 114 mg Fe/g biomass). The highest iron concentration (244 mg Fe/L) did not inhibit Arthrospira growth, but affected its biochemical composition.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2023)
Article
Chemistry, Multidisciplinary
Vasiliki Athanasiadou, Eleftheria E. Klontza, Petros Dimitriou-Christidis, Michalis Fountoulakis, Demetris F. Lekkas
Summary: Cultivating microalgae using wastewater, specifically cheese whey, can be a cost-effective and sustainable method of treating industrial wastewater and producing high-value biomass. This research investigates the factors influencing the growth of Arthrospira platensis biomass on whey rich solutions, with the aim of implementing circular economy practices and sustainable development principles. Experiment results show that a 10% concentration of cheese whey, under specific pH and lighting conditions, resulted in optimal biomass productivity and nutrient consumption. Arthrospira platensis cultures consistently demonstrate efficient growth performance in various conditions, making them a promising option for treating cheese whey wastewater and utilizing waste as a nutrient source.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2023)
Article
Biotechnology & Applied Microbiology
G. Chini Zittelli, G. Mugnai, M. Milia, B. Cicchi, A. M. Silva Benavides, A. Angioni, P. Addis, G. Torzillo
Summary: The study found that orange light increased growth and phycocyanin productivities, while blue light primarily increased phycocyanin content with lower biomass productivity. The shift from orange to blue light led to a significant increase in phycocyanin content within a short period, indicating that the synthesis of phycocyanin can be independent from growth. This study provides valuable insights into optimizing the production of high value pigments from Arthrospira platensis cultures by understanding the effects of different light spectra.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2022)
Article
Chemistry, Multidisciplinary
Ehab F. El-Belely, Mohamed M. S. Farag, Hanan A. Said, Abeer S. Amin, Ehab Azab, Adil A. Gobouri, Amr Fouda
Summary: Zinc oxide nanoparticles (ZnO-NPs) were successfully fabricated using metabolites from Arthrospira platensis, showing potential antimicrobial and cytotoxic activities against cancer cells.
Review
Agricultural Engineering
Prachi Varshney, Paulina Mikulic, Avigad Vonshak, John Beardall, Pramod P. Wangikar
BIORESOURCE TECHNOLOGY
(2015)
Article
Plant Sciences
Michael A. Borowitzka, Avigad Vonshak
EUROPEAN JOURNAL OF PHYCOLOGY
(2017)
Article
Plant Sciences
Wattana Jeamton, Sudarat Dulsawat, Morakot Tanticharoen, Avigad Vonshak, Supapon Cheevadhanarak
PLANT AND CELL PHYSIOLOGY
(2017)
Article
Plant Sciences
Yussi M. Palacios, Avigad Vonshak, John Beardall
Article
Plant Sciences
Kalpana Manandhar-Shrestha, Shoshana (Malis) Arad, Avigad Vonshak
EUROPEAN JOURNAL OF PHYCOLOGY
(2009)
Article
Biotechnology & Applied Microbiology
Lee-Feng Chien, Avigad Vonshak
JOURNAL OF APPLIED PHYCOLOGY
(2011)
Article
Biotechnology & Applied Microbiology
Avigad Vonshak, Supat Laorawat, Boosya Bunnag, Morakot Tanticharoen
JOURNAL OF APPLIED PHYCOLOGY
(2014)
Editorial Material
Multidisciplinary Sciences
N. V. Fedoroff, D. S. Battisti, R. N. Beachy, P. J. M. Cooper, D. A. Fischhoff, C. N. Hodges, V. C. Knauf, D. Lobell, B. J. Mazur, D. Molden, M. P. Reynolds, P. C. Ronald, M. W. Rosegrant, P. A. Sanchez, A. Vonshak, J. -K. Zhu
Article
Biotechnology & Applied Microbiology
Avraham Ben Sheleg, Nurit Novoplansky, Avigad Vonshak
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2019)
Article
Biotechnology & Applied Microbiology
Avigad Vonshak, Nurit Novoplansky, Ana M. Silva Benavides, Giuseppe Torzillo, John Beardall, Yussi M. Palacios
JOURNAL OF APPLIED PHYCOLOGY
(2020)
Article
Plant Sciences
Avraham Ben-Sheleg, Inna Khozin-Godberg, Beery Yaakov, Avigad Vonshak
Summary: The research focused on exploring the disparity in conditions optimal for growth and EPA production in Nannochloropsis oceanica. Mutant strains resistant to oxidative stress conditions showed greater EPA production in a high light and low temperature environment compared to the wild-type strain. Mutations in specific genes were identified as potential sources of tolerance in the mutant strains.
PLANT AND CELL PHYSIOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Avraham Ben-Sheleg, Avigad Vonshak
Summary: The tolerance of Arthrospira platensis strains to Rose Bengal, a singlet oxygen photosensitizer, correlates with increased maximum specific growth rates, suggesting that it could serve as an effective preliminary screening tool to identify strains with enhanced growth rates in high light environments.
JOURNAL OF APPLIED PHYCOLOGY
(2022)
Article
Plant Sciences
Cecilia Faraloni, Giuseppe Torzillo, Avigad Vonshak
Summary: Two mutants of N. oceanica, RB2 and RB113, exhibited resistance to high concentrations of rose bengal, with higher levels of catalase and ascorbate peroxidase, lower synthesis of carotenoids, and lower sensitivity of the photosynthetic apparatus compared to the wild type. These mutants show promising potential for outdoor cultures under high oxygen stress.
EUROPEAN JOURNAL OF PHYCOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Avraham Ben-Sheleg, Avigad Vonshak
Summary: The photosynthetic apparatus is a major producer of reactive oxygen species (ROS), especially in high-light environments. Singlet oxygen and superoxide anions induce damage to the photosynthetic apparatus of N. oceanica and play a role in high-light acclimation mechanisms.
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
(2022)