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Identification of a microalgae-yeast coculture system for nutrient removal in shrimp culture wastewater J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-16 Zhizhan Luo, Wen Huang, Chuntian Zheng, Ji Li, Long Yun, Huiming Sun, Guoxia Wang, Xiaoying Chen, Wenyan Mo, Dun Deng, Peng Luo, Huo Li, Hu Shu
The accumulation of nitrogen and phosphorous has detrimental effects on aquatic animals and negatively influences the economic benefits of aquaculture; thus, the control of water quality is of significance for the development of the aquaculture industry. In this study, a coculture system of Chlorella vulgaris + Rhodosporidium sphaerocarpum exhibited superior nitrogen removal performances compared with
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Postharvest processing of Sargassum duplicatum for tea products J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-16 Nahdlotul Fauziyah, Fermanto, Muhamad Nur Ghoyatul Amin, Mochammad Amin Alamsjah, Sri Subekti, Dwi Yuli Pujiastuti
Postharvest processing is crucial to success in utilizing Sargassum sp. as a raw material in tea production. Postharvest pre-treatment and drying processes can cause fishy flavor and nutrition loss; therefore, these effects need to be understood and managed. In this study, we evaluated the effect of deodorization technique and drying method on the final quality of dried algal samples. Sargassum duplicatum
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Mitochondrial genome of the harmful algal bloom species Odontella regia (Mediophyceae, Bacillariophyta) J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-14 Yichao Wang, Yang Chen, Jing Wang, Feng Liu, Nansheng Chen
Recent development of DNA sequencing technologies has enabled successful construction of thousands of mitochondrial genomes. Nevertheless, only 33 mitochondrial genomes have been reported for species in Bacillariophyta, which includes harmful algal bloom (HAB) species. In this study, we determined the complete mitogenome of the Bacillariophyta HAB species Odontella regia. For comparison, we also constructed
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Enhancement of biomass production and productivity of Arthrospira platensis GMPA7 using response surface monitoring methodology and turbidostatic cultivation strategy J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-14 Liangbin Li, Xiaoying Zhong, Yunquan Zheng, Shaobin Guo, Xianai Shi, Jiandong Huang
The cyanobacterium Arthrospira platensis plays a unique role in the food industry and is a promising and valuable natural source of bioactive compounds. The culture density of A. platensis should be further increased to improve biomass production and productivity, resulting in high conversion efficiency and reducing the cost of production. In this work we utilize a series of methods to increase the
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Obtaining spores for the production of Saccharina latissima : seasonal limitations in nature, and induction of sporogenesis in darkness J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-13 Teis Boderskov, Michael Bo Rasmussen, Annette Bruhn
When cultivating the kelp Saccharina latissima, knowledge on the availability of seeding material for the production is essential. Applying a spore seeding approach requires spores from the reproductive organs of the fertile sporophytes (sori). As sori are generally not present during the time of seeding in late summer, the production of spores (sporogenesis) can be artificially induced by removing
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Optimization of phenolic antioxidants extraction from Fucus vesiculosus by pressurized liquid extraction J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-12 Giovanni Arneldi Sumampouw, Charlotte Jacobsen, Adane Tilahun Getachew
This study aimed to optimize pressurized liquid extraction (PLE) of phenolic compounds from the brown seaweed Fucus vesiculosus to obtain extract with high yield, rich in phenolic compounds, with good radical scavenging, and with metal chelating ability. The extraction was optimized with a Box–Behnken design experiment and response surface tool. Optimal condition was found at 137.18 °C, 58.65% v/v
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Reactive oxygen species derived from NADPH oxidase regulate astaxanthin and total fatty acid accumulation in Chromochloris zofingiensis J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-09 Dongzhe Sun, Zhao Zhang
Many abiotic stresses can promote astaxanthin and total fatty acid (TFA) accumulation in microalgae, but their signal molecules remain undetermined. The reactive oxygen species (ROS) derived from NADPH oxidase has been reported to act as signals and regulate many cellular responses in cell responses to biotic and abiotic stresses in higher plants. The present study explored the regulatory effects of
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Optimisation and evaluation of cryopreservation method for Aurantiochytrium limacinum J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-09 Ayushi Dalmia, Ajay W. Tumaney
Marine microorganisms are gaining increased global importance owing to their richness in various bioactive compounds. The thraustochytrid Aurantiochytrium limacinum produces high amounts of the omega-3 fatty acid, DHA, and thus is of biotechnological importance. Aurantiochytrium limacinum cultures are usually maintained by continuous sub-culturing or plating, which is labour and resource-intensive
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Pigments from Eustigmatophyceae: an interesting class of microalgae for carotenoid production J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-08 Raquel Amaral, J. Sérgio Seixas de Melo, Lília Maria Antunes dos Santos
Pigments are a fundamental part of the microalgal cell, with chlorophylls at the center of photosynthesis and carotenoids as accessory pigments. The characteristic pigment profile of the Eustigmatophyceae was one of the evidences which contributed to the segregation of this class of organisms from the Xanthophyceae. Recent findings indicate that eustigmatophyte carotenoids are interesting compounds
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Growth and saxitoxin production responses to copper (CuCl 2 ) exposure by the cyanobacterium Raphidiopsis raciborskii J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-08 Lais Albuquerque Giraldi, Sarah Regina Vargas, Paulo Vagner Santos, Alessandra Emanuele Tonietto, Flavia Vischi Winck, Maria do Carmo Calijuri
Copper (Cu2+) is an essential micronutrient for cyanobacteria, but it has a toxic effect above a certain threshold. The presence of Cu2+ in water is usually related to human activity due to it being used in pesticides, fertilizer, and algaecides. Previous studies observed that high Cu2+ concentrations stimulated toxin synthesis in cyanobacteria and microalgae. Furthermore, saxitoxins (STXs) can bind
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Effects of nutrient availability and light intensity on the sterol content of Saccharina latissima (Laminariales, Phaeophyceae) J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-07 Dylan L. C. de Jong, Klaas R. Timmermans, José M. de Winter, Goverdina C. H. Derksen
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Rising nutrient nitrogen reverses the impact of temperature on photosynthesis and respiration of a macroalga Caulerpa lentillifera (Ulvophyceae, Caulerpaceae) J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-07 Yixun Cai, Gang Li, Dinghui Zou, Shanshan Hu, Xiaohan Shi
Both temperature and nutrient nitrogen are rising in worldwide aquatic ecosystems. To explore their interactive impacts on algal physiology, we measured the growth, cell components, photosynthesis, and dark respiration of a farmed green alga, Caulerpa lentillifera, under a matrix of temperatures (low, 22 °C; high, 27 °C) and nitrogen concentrations (low, 47 μmol L−1; medium, 188 μmol L−1; high, 750 μmol L−1)
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The relationship between two Synechococcus strains and heterotrophic bacterial communities and its associated carbon flow J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-07 Zenghu Zhang, Lili Tang, Yantao Liang, Gang Li, Hongmei Li, Richard B. Rivkin, Nianzhi Jiao, Yongyu Zhang
Synechococcus accounts for a considerable proportion of oceanic carbon fixation and has close relation with heterotrophic bacteria at sub-micrometre scales. However, the relationship between Synechococcus and heterotrophic bacteria and their impacts on oceanic carbon flow is not well understood. Here, we separately co-cultured the heterotrophic bacterial community with two different axenic Synechococcus
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Auxin and cytokinin combinations improve growth rates and protein contents in Laurencia catarinensis (Rhodophyta) J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-07 Patrícia Guimarães Araújo, Jônatas M. C. Souza, Cesar B. Pasqualetti, Nair S. Yokoya
Laurencia catarinensis (Ceramiales, Rhodomelaceae) has a high diversity of secondary metabolites such as acetogenin and halogenated terpenoids, with biological activities. We tested different combinations of auxins and cytokinins to evaluate their effects on the growth, total soluble proteins, pigments, and carbohydrates of L. catarinensis with the aim of improving the culture techniques of this species
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Bromelain enhances digestibility of Spirulina-based fish feed J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-07 Samskrathi A. Sharma, Siddharthan Surveswaran, James Arulraj, Krishnakumar Velayudhannair
Microalgae like Spirulina (Arthrospira platensis) are protein rich and can be alternative protein sources to fishmeal and soybean meal in fish feed formulation. The present study aims to improve the protein bioavailability of Spirulina by cost-effective protein extraction followed by protease supplementation in fish feed, using in vitro studies. Different extraction procedures such as microwave-assisted
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Limited-scale field trial confirmed differences in growth and agarose characteristics in life-cycle stages of industrially important marine red alga Gracilaria dura (Gracilariales, Rhodophyta) J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-07 Vaibhav A. Mantri, Yashesh Shah, Nikunj Balar, Keval Chavda, Mayur Mavani, Mayur Kolhe, Kanchan Sambhwani, Ramavatar Meena, Kamlaesh Prasad, Monica G. Kavale, Rajendra Singh Thakur
The red alga Gracilaria dura is economically important due to its high-quality agarose. Previous studies with wild populations reported the existence of specific differences in functional traits as well as agar characteristics among life cycle stages. In farmed populations, such differences can be exploited for commercial gains. For that, the variation among stages still needs to be well established
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Effects of indole-3-acetic acid (IAA), jasmonic acid (JA), and gibberellic acid (GA 3 ) on the direct regeneration of Gelidium floridanum explants J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-07 Deonir Batista, Débora Tomazi Pereira, Mariana Fontes Carvalho, Luciane Cristina Ouriques, Carmen Simioni
Gelidium floridanum is a red seaweed of economic importance as it yields high-quality agar which is extracted exclusively from material harvested from natural beds. Phytoregulators have not been explored in macroalgal culture as a probable alternative for large-scale farming of seaweed. Therefore, this study aimed to analyze the direct regeneration of G. floridanum explants using indole-3-acetic acid
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Synthesis and characterization of silver nanoparticles using Anabaena variabilis as a potential antimicrobial agent J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-07 Irshad Ahamad, Nafe Aziz, Almaz Zaki, Tasneem Fatma
Biogenic silver nanoparticles (AgNPs) are of significant interest due to their widespread application. In order to make nontoxic cost-effective AgNPs, several microorganisms have been utilized. In the present study, emphasis was given to Anabaena variabilis–mediated AgNPs synthesis. Optimal conditions for extract preparation were heating of extraction mixture at 100 °C for 5 min, while for AgNPs synthesis
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Cultivation of the red seaweed Kappaphycus alvarezii using biofloc effluent J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-07 Clóvis Murilo Pires, Giovana Carolina Bazzo, Pedro Luiz Manique Barreto, Carlos Manoel do Espírito Santo, Thallis Felipe Boa Ventura, Anna Gabrielle La Macchia Pedra, Ticiane Rover, Malachy McGovern, Leila Hayashi
The aim of this work was to evaluate the use of effluent from a Biofloc System (BFT) as a fertilizer for the red seaweed Kappaphycus alvarezii cultivated in tanks and analyze its influence on carrageenan yield and quality. Firstly, the optimum effluent concentration and period for enrichment were determined by an in vitro study. The seedlings were then cultivated for 7 days in two different culture
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Effects of sulfur limitation on nitrogen and sulfur uptake and lipid accumulation in Scenedesmus acuminatus J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-07 Qianya Wang, Ying Zhang, Huijuan Wu, Ning Xu, Aifen Li
Sulfur limitation is a frequently exploited method for inducing lipid accumulation in microalgae. However, there is little understanding of the underlying mechanism of this process. Hence, a study was conducted to determine the effects of sulfur limitation on nitrogen and sulfur uptake, lipid production strategies, and photosynthetic physiological characteristics of Scenedesmus acuminatus. A low sulfur
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Effect of light quality and quantity on productivity and phycoerythrin concentration in the cryptophyte Rhodomonas sp . J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-07 Christos Latsos, Jasper van Houcke, Lander Blommaert, Gabrielle P. Verbeeke, Jacco Kromkamp, Klaas R. Timmermans
The cryptophyte Rhodomonas sp. is a potential feed source for aquaculture live feed and resource for phycoerythrin (PE) production. This research investigates the influence of light, both quality and quantity, on the biomass productivity, composition and growth rate of Rhodomonas sp. The incident light intensity used in the experiments was 50 μmolphotons m−2 s−1, irrespective of the colour of the light
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Reproductive effort in the domesticated red alga Agarophyton chilense : differences between farms and natural populations J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-06 Sara Usandizaga, Paula Valenzuela, Juan Diego Gaitán-Espitia, Christophe Destombe, Marie Laure Guillemin
Macroalgal domestication and farming can induce significant ecological and biological changes in exploited species. In the red macroalga, Agarophyton chilense, marine farming is based on clonal propagation by cuttings of the largest plants. This type of mass selection by farmers can have a considerable impact on the life history characteristics of cultivated strains. In this study we investigated the
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Seaweed extracts as prospective plant growth bio-stimulant and salinity stress alleviator for Vigna sinensis and Zea mays J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-06 Mervat H. Hussein, Eladl Eltanahy, Alaa Fathy Al Bakry, Nesrein Elsafty, Maha M. Elshamy
The objective of this investigation was to evaluate the impact of seed priming with seaweed liquid extracts (SLEs) prepared from three Egyptian seaweeds (Ulva fasciata, Cystoseira compressa, and Laurencia obtusa) in a concentration of 20 g L-1 on seed germination and seedling growth of Vigna sinensis and Zea mays as well as the effectiveness of these extracts in ameliorating salinity stress. Laurancia
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Dynamic shift of the epibacterial communities on commercially cultivated Saccharina japonica from mature sporophytes to sporelings and juvenile sporophytes J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-05 Qi Han, Xiaoyang Zhang, Lirong Chang, Luyang Xiao, Rafiq Ahmad, Mahasweta Saha, Hongyan Wu, Gaoge Wang
The supply of healthy sporelings plays a crucial role in the successful aquaculture of commercially cultivated brown kelp Saccharina japonica. Epibacteria are of critical importance for maintaining seaweed health and development. Thus, this study aimed to investigate the epibacterial community associated with mature sporophytes and 1.5- and 2.0-month-old sporelings, as well as juvenile sporophytes
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Effect of dilution rate in continuous cultures of Arthrospira ( Spirulina ) platensis C1 on nutrient use efficiency and macromolecular- and elemental compositions J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-05 Chiraphan Khannapho, Atchara Phodee, Kalyanee Paithoonrangsarid, Apiradee Hongsthong, Asawin Meechai, Supapon Cheevadhanarak, Morakot Tanticharoen
Arthrospira (Spirulina) has potential applications as food supplements, feeds, pharmaceuticals, and biofuels; but its production process is inefficient. To maximise biomass production and nutrient use efficiency of Arthrospira, steady-state data from continuous cultures provides a unique means of productivity optimisation. In this study we cultivated the cyanobacterium Arthrospira (Spirulina) platensis
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Recovery of the protein fraction with high antioxidant activity from red seaweed industrial solid residue after agar extraction by subcritical water treatment J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-05 Ester Trigueros, M. Teresa Sanz, Patricia Alonso-Riaño, Sagrario Beltrán, Cipriano Ramos, Rodrigo Melgosa
In this work valorization of the underexploited industrial solid residue generated after agar extraction from Gelidium sesquipedale was studied by using subcritical water in a semicontinuous fix-bed reactor. First, a complete characterization of this by-product was carried out, determining up to 21% (w/w) of protein content (for a nitrogen factor of 4.9) with high content of essential amino acids,
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Seaweed liquid extracts induce hormetic growth responses in mung bean plants J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-05 Dania Andrea Di Filippo-Herrera, Rosalba Mireya Hernández-Herrera, Héctor Ocampo-Alvarez, Carla Vanessa Sánchez-Hernández, Mauricio Muñoz-Ochoa, Gustavo Hernández-Carmona
Hormesis is a dose–response phenomenon that is characterized by stimulation at low doses and inhibition at high doses. Extensive evidence has accumulated showing the occurrence of hormesis in numerous plant species independent of physicochemical agents, and this phenomenon has become a target for achieving greater crop productivity. Biostimulants (i.e., elicitors) are agents that activate adaptive
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Extracts of red seaweed, Pyropia yezoensis , inhibit melanogenesis but stimulate collagen synthesis J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-04 Jihae Park, Hojun Lee, Soyeon Choi, Lalit K. Pandey, Stephen Depuydt, Jonas De Saeger, Joon-Tae Park, Taejun Han
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Cationic starch: an effective flocculant for separating algal biomass from wastewater RO concentrate treated by microalgae J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-04 Arash Mohseni, Linhua Fan, Felicity Roddick, Haihua Li, Yuhua Gao, Zhenfa Liu
Microalgae can remove nutrients and organic contaminants from municipal wastewater reverse osmosis concentrate (ROC) and enable resource recovery via biomass production. Two cationic starch flocculants (starch-graft-poly cationic moiety 2-methacryloyloxyethyl trimethyl ammonium chloride (St-g-PDMC) and starch-graft-poly cationic moiety 2,3-epoxypropyl trimethyl ammonium chloride (St-GTA)) were synthesized
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Pigment content analysis in two HAB forming dinoflagellate species during the growth period J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-04 Somayeh Zahedi Dizaji, Gilan Attaran Fariman, Mir Mahdi Zahedi
Dinoflagellates form a large group of microalgae that have different pigments and the pigment content can vary depending on environmental conditions such as temperature, salinity, and their growth phase. They have the potential to cause red tides in coastal waters, so it is important to identify their pigments. In this study, two bloom forming dinoflagellate species, Scrippsiella trochoidea and Gyrodinium
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Molecular, morphological, and toxinological characterizations of an Argentinean strain of Halamphora coffeaeformis with potential biotechnological applications J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-04 Silvia E. Sala, Amelia A. Vouilloud, Cecilia A. Popovich, M. Virginia Sanchez-Puerta, Gastón O. Almandoz, Belén Mattera Coy, Nora G. Montoya, Patricia Leonardi
Diatoms are a diverse group of unicellular microalgae with broad biotechnological and industrial applications. Recent studies have revealed that some species from the genus Halamphora accumulate high quantities of lipids, which make them potentially suitable for biodiesel production. However, due to their high phenotypic plasticity, molecular phylogenetic and ultrastructural analyses are usually needed
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α-aminoisobutyric acid mimics the effect of 1-aminocyclopropane-1-carboxylic acid to promote sexual reproduction in the marine red alga Pyropia yezoensis (Rhodophyta) J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-02 Harune Endo, Hiroyuki Mizuta, Toshiki Uji
1-aminocyclopropane-1-carboxylic acid (ACC), a precursor for ethylene, stimulates the switch from a vegetative to a sexual reproductive phase in the marine red alga Pyropia species. This study explored the effects of ethylene biosynthesis inhibitors on the sexual reproduction of gametophytes of the red alga Pyropia yezoensis to gain a functional understanding of the role of ACC as a plant hormone in
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Sugaring-out: a novel sample preparation method for determination of fucoxanthin in Icelandic edible seaweeds J. Appl. Phycol. (IF 3.016) Pub Date : 2021-01-01 Yuetuan Zhang, Maonian Xu, Björn Viðar Aðalbjörnsson
Fucoxanthin is an oxygenated carotenoid with a broad spectrum of bioactivities, ranging from antioxidant activity to antimicrobial activities. Micro-algae are well-recognized resources for their production of fucoxanthin, which can be enhanced by cell culture and genetic engineering, and macro-algae or seaweeds are readily available natural resources for harvesting and fucoxanthin purification. Prior
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Identification of suitable Botryococcus braunii strains for non-destructive in situ hydrocarbon extraction J. Appl. Phycol. (IF 3.016) Pub Date : 2020-12-07 Christian Kleinert, Carola Griehl
The process of milking microalgae is a promising approach to reduce the downstream costs for the production of valuable substances from microalgae by avoiding the steps of harvest, dewatering, and cell disruption of the common process chain (cultivation, harvesting, dewatering, cell disruption, extraction, purification). The green microalga Botryococcus braunii is particularly suited for this process
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Influence of photodegradation on the removal of color and phenolic compounds from palm oil mill effluent by Arthrospira platensis J. Appl. Phycol. (IF 3.016) Pub Date : 2020-12-07 M. M. Azimatun Nur, G. M. Garcia, P. Boelen, Anita G. J. Buma
Palm oil mill effluent (POME) released from conventional treatment systems poses severe environmental problems due to its dark color, its high chemical oxygen demand (COD), and high content of phenolic compounds. However, the possible biodegradation of phenolic compounds and color by microalgae was not well explored. This research aimed to reveal optimal conditions for pollutant removal through biodegradation
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Cultured and packed sea grapes ( Caulerpa lentillifera ): effect of different irradiances on photosynthesis J. Appl. Phycol. (IF 3.016) Pub Date : 2020-12-06 Lara Elisabeth Stuthmann, Karin Springer, Andreas Kunzmann
The green macroalga Caulerpa lentillifera (sea grapes, green caviar) is a promising source for future nutrition due to its beneficial composition for human consumption. It is cultured in tidal ponds, mainly in Vietnam and the Philippines, and stored for shipment and retail in plastic containers, like polystyrene (PS) and polyethylene terephthalate (PET), exhibiting different properties. This study
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Correction to: Effect of direct “seeding” binders and embryonic sporophyte sizes on the development of the sugar kelp, Saccharina latissima J. Appl. Phycol. (IF 3.016) Pub Date : 2020-12-04 Schery Umanzor, Yaoguang Li, Charles Yarish
A Correction to this paper has been published: https://doi.org/10.1007/s10811-020-02345-4
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Nitrogen starvation–induced oxidative stress relieves P II -mediated inhibition of acetyl-CoA carboxylase (ACCase) activity and signals enhanced lipid synthesis in Synechococcus PCC 7942 J. Appl. Phycol. (IF 3.016) Pub Date : 2020-11-19 Ekta Verma, Sindhunath Chakraborty, Surbhi Kharwar, Balkrishna Tiwari, Satya Shila Singh, Arun Kumar Mishra
The present study shows the existence of PII-acetyl-CoA carboxylase interaction in the cyanobacterium Synechococcus sp. PCC 7942 and the possible adverse impact of nitrogen starvation on this interaction. The in silico and in vitro analysis of PII-acetyl-CoA carboxylase interaction revealed that the biotin carboxyl carrier protein subunit of acetyl-CoA carboxylase enzyme actually interacts with the
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The light/dark cycle of microalgae in a thin-layer photobioreactor J. Appl. Phycol. (IF 3.016) Pub Date : 2020-11-19 Alessandro Chiarini, Maurizio Quadrio
A numerical study of the motion of algal cells in a representative thin-layer-cascade (TLC) photobioreactor is presented. The goal is to determine the time scale associated with the light/dark (L/D) cycle seen by the cells during their turbulent motion in the liquid culture. Owing to the limited reliability of the available numerical results which deal with time-averaged quantities and thus lack time-resolved
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Sargassum contamination and consequences for downstream uses: a review J. Appl. Phycol. (IF 3.016) Pub Date : 2020-11-17 Damien A. Devault, Ronan Pierre, Hélène Marfaing, Franck Dolique, Pascal-Jean Lopez
Sargassum spp. are brown algae present in the tropical and subtropical waters of the world’s oceans. Benthic or pelagic, Sargassum spp. represent substantial amounts of biomass when drifted and massive beaching events also named “golden tides” are challenging for environmental and tourism managers. The Sargassum spp. biomass can be regarded as offering economic opportunities; however, micropollutant
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Effect of gibberellin, methyl jasmonate and myoinositol on biomass and eicosapentaenoic acid productivities in the eustigmatophyte Monodopsis subterranea CCALA 830 J. Appl. Phycol. (IF 3.016) Pub Date : 2020-11-17 Shaweta Arora, Girish Mishra
Omega-3 fatty acids sourced from microalgae are in demand due to their therapeutic potential and sustainability of the source. The present study was focused towards enhancing eicosapentaenoic acid (EPA) productivity in the marine Chrysophyte Monodopsis subterranea through media supplementation using the plant growth regulators gibberellic acid, methyl jasmonate and myoinositol. The effect of three
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Prospects for upgrading by the European kelp sector J. Appl. Phycol. (IF 3.016) Pub Date : 2020-11-17 Sander van den Burg, Trond Selnes, Liliana Alves, Else Giesbers, Ana Daniel
The interest in cultivating seaweed in European seas as source of food, feed and feedstock for the biobased economy is growing. Amongst the species investigated is kelp, also known as sugar kelp, Saccharina latissima or Laminaria saccharina. The European kelp sector is relatively small, compared to the global production and use, yet growth of the sector is aimed for. An inevitable question for European
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Performance of the agarophyte Gracilariopsis tenuifrons in a multi-trophic aquaculture system with Litopenaeus vannamei using water recirculation J. Appl. Phycol. (IF 3.016) Pub Date : 2020-11-12 Marcella Araújo do Amaral Carneiro, Júlia Fanny de Jesus Resende, Sérgio Ricardo Oliveira, Felipe de Oliveira Fernandes, Henrique Douglas dos Santos Borburema, Marcelle Stephanne Barbosa-Silva, Ana Beatriz Gomes Ferreira, Eliane Marinho-Soriano
This study aimed to evaluate the performance of the red alga Gracilariopsis tenuifrons as a biofilter in a multi-trophic cultivation system with Litopenaeus vannamei, using recirculation by zero water exchange. The species were cultivated for 4 weeks, while measurements were taken of the chemical and physical characteristics of water, the development of the cultivated organisms (biomass and growth
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Effect of alkaline pH and nitrogen starvation on the triacylglycerol (TAG) content, growth, biochemical composition, and fatty acid profile of Auxenochlorella protothecoides KP7 J. Appl. Phycol. (IF 3.016) Pub Date : 2020-11-12 Enver Ersoy Andeden, Sahlan Ozturk, Belma Aslim
Microalgae can accumulate substantial amounts of triacylglycerol, the primary feedstock for biodiesel production, under different stress conditions. In this study, exposure to alkaline pH (pH 10) using carbonate-bicarbonate buffer, nitrogen starvation, and both were applied to induce triacylglycerol accumulation in Auxenochlorella protothecoides KP7. In addition to triacylglycerol accumulation, growth
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Transcriptome-wide identification and evaluation of optimal reference genes for RT-qPCR expression analysis of Saccharina latissima responses to biotic and abiotic stress J. Appl. Phycol. (IF 3.016) Pub Date : 2020-11-12 Qikun Xing, Sylvie Rousvoal, Catherine Leblanc
Saccharina latissima, known as sugar kelp, is a brown macroalga with huge ecological and economic values. In marine intertidal environment, S. latissima has to cope with both biotic and abiotic stress, which can cause the reduction of the yield during cultivation. To better understand the physiological responses of S. latissima under different stress conditions, large-scale transcriptomic analyses
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Characterization of strains of Chlorella from Abakaliki, Nigeria, for the production of high-value products under variable temperatures J. Appl. Phycol. (IF 3.016) Pub Date : 2020-11-08 John Nwkpuru Idenyi, Jonathan Chukwu Eya, James Chukwuma Ogbonna, Mathias Ahii Chia, Md Asraful Alam, Benjamin E. Ubi
The successes made in the production of algal high-value products in the last decades are threatened by the continuous rise in global temperature to which most strains are not fully adapted. The choice of strains adapted to high temperatures from novel locations with excellent potential to produce high concentrations of biomolecules such as lipids, carbohydrates, pigments, and antioxidants is extremely
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Extracellular polymeric substances with high radical scavenging ability produced in outdoor cultivation of the thermotolerant chlorophyte Graesiella sp. J. Appl. Phycol. (IF 3.016) Pub Date : 2020-11-07 Wejdene Gongi, Nereida Cordeiro, Juan Luis Gomez Pinchetti, Saloua Sadok, Hatem Ben Ouada
The present study developed a two-step strategy to enhance the production of extracellular polymeric substances (EPSs) by a thermotolerant chlorophyte, Graesiella sp., in view to their industrial valorisation. In the first step, Graesiella sp. was grown in outdoor conditions in pilot-scale photobioreactors of 100 L culture volumes. In the second step, the biomass collected in the exponential growth
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Saved by seaweeds: phyconomic contributions in times of crises J. Appl. Phycol. (IF 3.016) Pub Date : 2020-11-07 Ole G. Mouritsen, Prannie Rhatigan, M. Lynn Cornish, Alan T. Critchley, José Lucas Pérez-Lloréns
Seaweeds (macroalgae) are, together with microalgae, main contributors to the Earth’s production of organic matter and atmospheric oxygen as well as fixation of carbon dioxide. In addition, they contain a bounty of fibres and minerals, as well as macro- and micronutrients that can serve both technical and medicinal purposes, as well as be a healthy and nutritious food for humans and animals. It is
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Bioactive and nutritional potential of Alaria esculenta and Saccharina latissima J. Appl. Phycol. (IF 3.016) Pub Date : 2020-11-05 C. Afonso, J. Matos, I. Guarda, A. Gomes-Bispo, R. Gomes, C. Cardoso, S. Gueifão, I. Delgado, I. Coelho, I. Castanheira, N. M. Bandarra
The brown seaweed species Alaria esculenta and Saccharina latissima are commercial edible resources in Norway. There are knowledge gaps regarding these species. Accordingly, they were characterized and their bioactivity and bioaccessibility evaluated. The fatty acid (FA) analysis revealed an ω-3/ω-6 ratio of almost 2 in A. esculenta vs 1 in S. latissima. The FAs 18:4 ω-3 (stearidonic acid) and 20:5
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Production of exopolymer substances from the thermophilic chlorophyte Graesiella : industrial and ecological applications J. Appl. Phycol. (IF 3.016) Pub Date : 2020-11-05 Wejdene Gongi, Nereida Cordeiro, Juan Luis Gómez Pinchetti, Hatem Ben Ouada
Microalgal extracellular polymeric substances (EPSs) are heteropolysaccharides that have characteristics suitable for industrial and biotechnological applications. Notably, they have strong anionic nature and high hydrophobicity. Nevertheless, systematic studies to demonstrate the viability of the production of EPSs on an industrial scale are still crucial. In this research, the chlorophyte Graesiella
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Phytoelicitor activity of Sargassum vulgare and Acanthophora spicifera extracts and their prospects for use in vegetable crops for sustainable crop production J. Appl. Phycol. (IF 3.016) Pub Date : 2020-11-05 Omar Ali, Adesh Ramsubhag, Jayaraj Jayaraman
The phytoelicitor and phytostimulatory properties of alkaline extracts of two tropical seaweeds, Sargassum vulgare C. Agardh and Acanthophora spicifera (M.Vahl) Børgesen, collected from the coasts of Trinidad were investigated in tomato and sweet pepper crops. Foliar applications of seaweed extracts (SWE), at 0.5% concentration, resulted in substantial reductions in disease severity by the pathogens
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Effect of essential oil- and iodine treatments on the bacterial microbiota of the brown alga Ectocarpus siliculosus J. Appl. Phycol. (IF 3.016) Pub Date : 2020-11-05 Bertille Burgunter-Delamare, Catherine Boyen, Simon M. Dittami
Macroalgae live in tight association with bacterial communities, which impact most aspects of their biology. Clean, ideally axenic, algal starting material is required to control and study these interactions. Antibiotics are routinely used to generate clean tissue; however, bacterial resistance to antibiotics is increasingly widespread and sometimes related to the emergence of potentially pathogenic
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Photosynthetic pigment production and metabolic and lipidomic alterations in the marine cyanobacteria Synechocystis sp. PCC 7338 under various salinity conditions J. Appl. Phycol. (IF 3.016) Pub Date : 2020-11-04 Hwanhui Lee, YuJin Noh, Seong-Joo Hong, Hookeun Lee, Dong-Myung Kim, Byung-Kwan Cho, Choul-Gyun Lee, Hyung-Kyoon Choi
Synechocystis sp. PCC 7338 (hereafter referred to as Synechocystis 7338) is a marine cyanobacterium that has the potential to produce photosynthetic pigments. In this study, we investigated the effects of various NaCl concentrations (0, 0.4, 0.8, and 1.2 M) on cell growth, photosynthetic pigments, and metabolites and intact lipid species profiles in Synechocystis 7338. The overall growth pattern of
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Ecotypes of Hypnea pseudomusciformis (Cystocloniaceae, Rhodophyta) revealed by physiological, morphological, and molecular data J. Appl. Phycol. (IF 3.016) Pub Date : 2020-11-02 Fabio Nauer, Matheus Naves, Estela Maria Plastino, Mariana Cabral Oliveira, Mutue Toyota Fujii
The red seaweed Hypnea pseudomusciformis has economic potential for mariculture as a source of carrageenan and other products. This work investigates this species along the Brazilian coastline by evaluating the effects of irradiance (40, 70, and 100 μmol photons m−2 s−1) on the number of differentiated branches (Br), growth rates (GR), photosynthesis parameters, and pigment content of tetrasporophytes
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Allometric models effectively predict Saccharina latissima (Laminariales, Phaeophyceae) fresh weight at local scales J. Appl. Phycol. (IF 3.016) Pub Date : 2020-10-31 Jillian Campbell, Samuel Starko
Obtaining reliable estimates of algal biomass is key to assessing the contributions of macroalgae to nearshore ecosystems and to monitoring the effects of environmental change on macroalgal-dominated reefs. Using non-destructive methods to estimate macroalgal biomass leaves algal beds intact but requires precise allometric models (e.g., length–weight relationships). In this study, we established allometric
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Algae and Bioguano as promising source of organic fertilizers J. Appl. Phycol. (IF 3.016) Pub Date : 2020-10-29 Giulia Atzori, Werther Guidi Nissim, Liliana Rodolfi, Alberto Niccolai, Natascia Biondi, Stefano Mancuso, Mario R. Tredici
The projected population growth implies an increased food demand with a severe impact on Earth’s natural resources. Improving crops yield without compromising the environment will be one of the main challenges of the next decades. Among the practices that can promote sustainable agriculture, organic fertilizers, and seaweeds in particular, are receiving growing attention. The aim of the current study
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Nitrogen starvation-inducible promoter of microalga Neochloris oleoabundans lipogenic gene encoding diacylglycerol acyltransferase 2 J. Appl. Phycol. (IF 3.016) Pub Date : 2020-10-29 Paeka Klaitong, Akaraphol Watcharawipas, Sirirat Fa-aroonsawat, Wipa Chungjatupornchai
Microalgal lipid triacylglycerol (TAG) is a promising source for sustainable production of biofuels and edible oils. TAG biosynthesis in microalgae can be induced by nitrogen starvation (−N); however, regulation of the genes involved in this process is poorly known. To explore the regulation of gene encoding diacylglycerol acyltransferase 2 of oleaginous microalga Neochloris oleoabundans (NeoDGAT2)
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Effects of fermented Aphanizomenon flos-aquae on the caecal microbiome of mice fed a high-sucrose and low-dietary fibre diet J. Appl. Phycol. (IF 3.016) Pub Date : 2020-10-27 Miyu Taniguchi, Takashi Kuda, Moemi Takei, Hajime Takahashi, Bon Kimura
Aphanizomenon flos-aquae, a freshwater cyanobacterium harvested from Upper Klamath Lake, Oregon, USA, is employed as a functional food material. Aphanizomenon flos-aquae can be fermented with Lactobacillus plantarum and Lactococcus lactis subsp. lactis. Here, to determine the dietary effects of A. flos-aquae (AFA) and fermented A. flos-aquae (F-AFA) on the mouse gut microbiome, high-sucrose diet containing
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Status, exploitation and resource management of alginophytes in India: an account and way forward J. Appl. Phycol. (IF 3.016) Pub Date : 2020-10-27 Vaibhav A. Mantri, M. Ganesan, Monica G. Kavale, Tejal K. Gajaria
The biodiversity of Indian seaweeds comprises ca. 865 taxa, of which the alginophytes Sargassum spp., Cystoseira spp. and Turbinaria spp. are traditionally exploited. The alginate trade in India evolved as a cottage industry in the rural coastal regions of Tamil Nadu. The resource surveys have assured sufficient feed-stock availability, but landing data between 1978 and 2019 revealed a 54.85 and 33