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Singh AP, Gupta A, Singh PR, Jaiswal J, Sinha RP. Synergistic effects of salt and ultraviolet radiation on the rice-field cyanobacterium Nostochopsis lobatus HKAR-21. Photochem Photobiol Sci 2024; 23:285-302. [PMID: 38143251 DOI: 10.1007/s43630-023-00517-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 11/23/2023] [Indexed: 12/26/2023]
Abstract
Environmental variation has a significant impact on how organisms, including cyanobacteria, respond physiologically and biochemically. Salinity and ultraviolet radiation (UVR)-induced variations in the photopigments of the rice-field cyanobacterium Nostochopsis lobatus HKAR-21 and its photosynthetic performance was studied. We observed that excessive energy dissipation after UVR is mostly caused by Non-Photochemical Quenching (NPQ), whereas photochemical quenching is important for preventing photoinhibition. These findings suggest that ROS production may play an important role in the UVR-induced injury. To reduce ROS-induced oxidative stress, Nostochopsis lobatus HKAR-21 induces the effective antioxidant systems, which includes different antioxidant compounds like carotenoids and enzymes such as superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and ascorbate peroxidase (APX). The study indicates that Nostochopsis lobatus HKAR-21 exposed to photosynthetically active radiation + UV-A + UV-B (PAB) and PAB + NaCl (PABN) had significantly reduced photosynthetic efficiency. Furthermore, maximum ROS was detected in PAB exposed cyanobacterial cells. The induction of lipid peroxidation (LPO) has been investigated to evaluate the impact of UVR on the cyanobacterial membrane in addition to enzymatic defensive systems. The maximal LPO level was found in PABN treated cells. Based on the findings of this research, it was concluded that salinity and UVR had collegial effects on the major macromolecular components of the rice-field cyanobacterium Nostochopsis lobatus HKAR-21.
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Affiliation(s)
- Ashish P Singh
- Laboratory of Photobiology and Molecular Microbiology, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Amit Gupta
- Laboratory of Photobiology and Molecular Microbiology, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Prashant R Singh
- Laboratory of Photobiology and Molecular Microbiology, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Jyoti Jaiswal
- Laboratory of Photobiology and Molecular Microbiology, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Rajeshwar P Sinha
- Laboratory of Photobiology and Molecular Microbiology, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
- University Center for Research & Development (UCRD), Chandigarh University, Chandigarh, India.
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2
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Rosic N, Thornber C. Biotechnological Potential of Macroalgae during Seasonal Blooms for Sustainable Production of UV-Absorbing Compounds. Mar Drugs 2023; 21:633. [PMID: 38132954 PMCID: PMC10744652 DOI: 10.3390/md21120633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 11/27/2023] [Accepted: 12/05/2023] [Indexed: 12/23/2023] Open
Abstract
Marine macroalgae (seaweeds) are important primary global producers, with a wide distribution in oceans around the world from polar to tropical regions. Most of these species are exposed to variable environmental conditions, such as abiotic (e.g., light irradiance, temperature variations, nutrient availability, salinity levels) and biotic factors (e.g., grazing and pathogen exposure). As a result, macroalgae developed numerous important strategies to increase their adaptability, including synthesizing secondary metabolites, which have promising biotechnological applications, such as UV-absorbing Mycosporine-Like Amino Acid (MAAs). MAAs are small, water-soluble, UV-absorbing compounds that are commonly found in many marine organisms and are characterized by promising antioxidative, anti-inflammatory and photoprotective properties. However, the widespread use of MAAs by humans is often restricted by their limited bioavailability, limited success in heterologous expression systems, and low quantities recovered from the natural environment. In contrast, bloom-forming macroalgal species from all three major macroalgal clades (Chlorophyta, Phaeophyceae, and Rhodophyta) occasionally form algal blooms, resulting in a rapid increase in algal abundance and high biomass production. This review focuses on the bloom-forming species capable of producing pharmacologically important compounds, including MAAs, and the application of proteomics in facilitating macroalgal use in overcoming current environmental and biotechnological challenges.
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Affiliation(s)
- Nedeljka Rosic
- Faculty of Health, Southern Cross University, Gold Coast, QLD 4225, Australia
- Marine Ecology Research Centre, Southern Cross University, Lismore, NSW 2480, Australia
| | - Carol Thornber
- Department of Natural Resources Science, University of Rhode Island, 120 Flagg Road, Kingston, RI 02881, USA;
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Xiang JX, Saha M, Zhong KL, Zhang QS, Zhang D, Jueterbock A, Krueger-Hadfield SA, Wang GG, Weinberger F, Hu ZM. Genome-scale signatures of adaptive gene expression changes in an invasive seaweed Gracilaria vermiculophylla. Mol Ecol 2023; 32:613-627. [PMID: 36355347 DOI: 10.1111/mec.16776] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 11/02/2022] [Accepted: 11/08/2022] [Indexed: 11/12/2022]
Abstract
Invasive species can successfully and rapidly colonize new niches and expand ranges via founder effects and enhanced tolerance towards environmental stresses. However, the underpinning molecular mechanisms (i.e., gene expression changes) facilitating rapid adaptation to harsh environments are still poorly understood. The red seaweed Gracilaria vermiculophylla, which is native to the northwest Pacific but invaded North American and European coastal habitats over the last 100 years, provides an excellent model to examine whether enhanced tolerance at the level of gene expression contributed to its invasion success. We collected G. vermiculophylla from its native range in Japan and from two non-native regions along the Delmarva Peninsula (Eastern United States) and in Germany. Thalli were reared in a common garden for 4 months at which time we performed comparative transcriptome (mRNA) and microRNA (miRNA) sequencing. MRNA-expression profiling identified 59 genes that were differently expressed between native and non-native thalli. Of these genes, most were involved in metabolic pathways, including photosynthesis, abiotic stress, and biosynthesis of products and hormones in all four non-native sites. MiRNA-based target-gene correlation analysis in native/non-native pairs revealed that some target genes are positively or negatively regulated via epigenetic mechanisms. Importantly, these genes are mostly associated with metabolism and defence capability (e.g., metal transporter Nramp5, senescence-associated protein, cell wall-associated hydrolase, ycf68 protein and cytochrome P450-like TBP). Thus, our gene expression results indicate that resource reallocation to metabolic processes is most likely a predominant mechanism contributing to the range-wide persistence and adaptation of G. vermiculophylla in the invaded range. This study, therefore, provides molecular insight into the speed and nature of invasion-mediated rapid adaption.
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Affiliation(s)
| | - Mahasweta Saha
- Marine Ecology Division, GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, Kiel, Germany
- Marine Ecology and Biodiversity, Plymouth Marine Laboratory, Plymouth, UK
| | - Kai-Le Zhong
- Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
| | | | - Di Zhang
- Ocean School, YanTai University, Yantai, China
| | - Alexander Jueterbock
- Algal and Microbial Biotechnology Division, Faculty of Biosciences and Aquaculture, Nord University, Bodø, Norway
| | | | - Gao-Ge Wang
- Institute of Evolution and Marine Biodiversity, College of Marine Life Sciences, Ocean University of China, Qingdao, China
| | - Florian Weinberger
- Marine Ecology Division, GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, Kiel, Germany
| | - Zi-Min Hu
- Ocean School, YanTai University, Yantai, China
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Navarro NP, Huovinen P, Jofre J, Gómez I. Ultraviolet radiation stress response of haploid and diploid spores of Mazzaella laminarioides: Do bio-optical traits matter? ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102230] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ahmed H, Pathak J, Rajneesh, Sonkar PK, Ganesan V, Häder DP, Sinha RP. Responses of a hot spring cyanobacterium under ultraviolet and photosynthetically active radiation: photosynthetic performance, antioxidative enzymes, mycosporine-like amino acid profiling and its antioxidative potentials. 3 Biotech 2021; 11:10. [PMID: 33442509 PMCID: PMC7778668 DOI: 10.1007/s13205-020-02562-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Accepted: 11/19/2020] [Indexed: 01/24/2023] Open
Abstract
This study summarizes the response of a hot spring cyanobacterium Fischerella sp. strain HKAR-14, under simulated light conditions of ultraviolet radiation (UVR), photosynthetically active radiation (PAR), PAR + UV-A (PA) and PAR + UV-A + UV-B (PAB). Exposure to UVR caused a decline in growth and Chl a while total carotene content increased under PA and PAB. Maximum photochemical efficiency of photosystem II (F v /F m) and relative electron transport rate decreased significantly in PA and PAB exposure. Higher non-photochemical quenching and lower photochemical quenching values were observed in UVR-exposed samples as compared to the control. Levels of intracellular reactive oxygen species (ROS) increased significantly in PAB and PA. Fluorescence microscopic images showed an increase in green fluorescence, indicating the generation of ROS in UVR. The antioxidant machinery including superoxide dismutase, catalase and peroxidase showed an increase of 1.76-fold and 2.5-fold superoxide dismutase, 2.4-fold and 3.7-fold catalase, 1.83-fold and 2.5-fold peroxidase activities under PA and PAB, respectively. High-performance liquid chromatography equipped with photodiode array detector, electrospray ionization mass spectrometry, Fourier-transform infrared spectroscopy and nuclear magnetic resonance spectroscopy analyses reveal the occurrence of a single mycosporine-like amino acid, shinorine (λ max 332.3 ± 2 nm, m/z 333.1), with a retention time of 1.157 min. The electrochemical characterization of shinorine was determined by cyclic voltammetry. The shinorine molecule possesses electrochemical activity and represents diffusion-controlled process in 0.1 M (pH 7.0) phosphate buffer. An antioxidant assay of shinorine showed its efficient activity as antioxidant which increased in a dose-dependent manner.
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Affiliation(s)
- Haseen Ahmed
- Laboratory of Photobiology and Molecular Microbiology, Center of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005 India
- Department of Botany, Government Girls P.G. College, Satna, MP 485001 India
| | - Jainendra Pathak
- Department of Botany, Pt. Jawaharlal Nehru College, Banda, 210001 India
| | - Rajneesh
- Laboratory of Photobiology and Molecular Microbiology, Center of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005 India
| | - Piyush K. Sonkar
- Department of Chemistry, MMV, Banaras Hindu University, Varanasi, India
| | - Vellaichamy Ganesan
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, India
| | - Donat-P. Häder
- Department of Biology, Emeritus of Friedrich-Alexander University, Neue Str. 9, 91096 Möhrendorf, Germany
| | - Rajeshwar P. Sinha
- Laboratory of Photobiology and Molecular Microbiology, Center of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005 India
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Distribution, Contents, and Types of Mycosporine-Like Amino Acids (MAAs) in Marine Macroalgae and a Database for MAAs Based on These Characteristics. Mar Drugs 2020; 18:md18010043. [PMID: 31936139 PMCID: PMC7024296 DOI: 10.3390/md18010043] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 12/28/2019] [Accepted: 01/01/2020] [Indexed: 11/17/2022] Open
Abstract
Mycosporine-like amino acids (MAAs), maximally absorbed in the wavelength region of 310–360 nm, are widely distributed in algae, phytoplankton and microorganisms, as a class of possible multi-functional compounds. In this work, based on the Web of Science, Springer, Google Scholar, and China national knowledge infrastructure (CNKI), we have summarized and analyzed the studies related to MAAs in marine macroalgae over the past 30 years (1990–2019), mainly focused on MAAs distribution, contents, and types. It was confirmed that 572 species marine macroalgae contained MAAs, namely in 45 species of Chlorophytes, 41 species of Phaeophytes, and 486 species of Rhodophytes, and they respectively belonged to 28 orders. On this basis, we established an open online database to quickly retrieve MAAs in 501 species of marine macroalgae. Furthermore, research concerning MAAs in marine macroalgae were analyzed using CiteSpace. It could easily be seen that the preparation and purification of MAAs in marine macroalgae have not been intensively studied during the past 10 years, and therefore it is necessary to strengthen the research in the preparation and purification of MAA purified standards from marine macroalgae in the future. We agreed that this process is not only interesting, but important due to the potential use of MAAs as food and cosmetics, as well as within the medicine industry.
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Chaves-Peña P, de la Coba F, Figueroa FL, Korbee N. Quantitative and Qualitative HPLC Analysis of Mycosporine-Like Amino Acids Extracted in Distilled Water for Cosmetical Uses in Four Rhodophyta. Mar Drugs 2019; 18:md18010027. [PMID: 31905630 PMCID: PMC7024326 DOI: 10.3390/md18010027] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 12/21/2019] [Accepted: 12/25/2019] [Indexed: 12/13/2022] Open
Abstract
Mycosporine-like amino acids (MAAs) have gained considerable attention as highly active photoprotective candidates for human sunscreens. However, more studies are necessary to evaluate the extraction efficiencies of these metabolites in cosmetic compatible solvents, as well as, their subsequent HPLC analysis. In the present study, MAA extraction using distilled water and 20% aqueous methanol in four Rhodophyta was investigated. Different re-dissolution solvents and a C8 and C18 columns were tested for the HPLC analysis. Porphyra-334, shinorine, palythine, palythine-serine, asterina-330, and palythinol were identified by HPLC/ESI-MS. The separation of these MAAs were improved employing the C8-column, and using methanol as re-dissolution solvent. Regarding total MAAs concentrations, no differences between the two solvents were found. The highest MAA amounts were observed injecting them directly in the HPLC. According to these results, distilled water could be an excellent extraction solvent for MAAs. Nevertheless, the re-dissolution in pure methanol after dryness would be the best option for the qualitative analysis of the most common MAAs in these red algae. Our results entail important implications regarding the use of red macroalgae as promising candidates as environment-friendly sources of natural sunscreens.
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Affiliation(s)
- Patricia Chaves-Peña
- Department of Ecology and Geology, Faculty of Sciences, University of Malaga, Institute of Blue Biotechnology and Development (IBYDA), Campus Universitario de Teatinos s/n, E-29071 Malaga, Spain; (P.C.-P.); (F.L.F.)
| | - Francisca de la Coba
- Photobiology Laboratory, Central Service for Research Support (SCAI), University of Malaga, Campus Universitario de Teatinos s/n, E-29071 Malaga, Spain;
| | - Felix L. Figueroa
- Department of Ecology and Geology, Faculty of Sciences, University of Malaga, Institute of Blue Biotechnology and Development (IBYDA), Campus Universitario de Teatinos s/n, E-29071 Malaga, Spain; (P.C.-P.); (F.L.F.)
| | - Nathalie Korbee
- Department of Ecology and Geology, Faculty of Sciences, University of Malaga, Institute of Blue Biotechnology and Development (IBYDA), Campus Universitario de Teatinos s/n, E-29071 Malaga, Spain; (P.C.-P.); (F.L.F.)
- Correspondence: ; Tel.: +34-951953257
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Álvarez-Gómez F, Korbee N, Figueroa FL. Effects of UV Radiation on Photosynthesis, Antioxidant Capacity and the Accumulation of Bioactive Compounds in Gracilariopsis longissima, Hydropuntia cornea and Halopithys incurva (Rhodophyta). JOURNAL OF PHYCOLOGY 2019; 55:1258-1273. [PMID: 31257593 DOI: 10.1111/jpy.12899] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Accepted: 05/11/2019] [Indexed: 06/09/2023]
Abstract
The red macroalgae Hydropuntia cornea, Gracilariopsis longissima and Halopithys incurva were cultured for 14 d under laboratory conditions, in enriched seawater with a high nutrient content (N-NH4+ and P-PO43- ) and two radiation regimes: PAR (400-700 nm) and PAB (280-700 nm). The UV radiation effects under high availability of nutrients on growth, photosynthetic pigments (chlorophyll a, carotenoids and phycobiliproteins), photosynthetic activity and biochemical composition were studied. Maximum quantum yield (Fv /Fm ) was not significantly different among the PAR and PAB treatments during the experiment. However, the maximum electronic transport rate (ETRmax ) increased over time, showing the highest values in PAR for H. incurva and H. cornea, whereas for G. longissima it was found in PAB. Photosynthetic efficiency (αETR ) decreased over time in the first two species, but increased in G. longissima. Saturation irradiance (EkETR ) and maximum nonphotochemical quenching (NPQmax ) increased in PAB with time up to 80% and 30%, respectively, indicating a photosynthetic acclimatization like that of sun-type algae. Five MAAs were identified in all species using high performance liquid chromatography (HPLC). The total content of MAAs increased over time, being 30% higher in H. incurva, 40% in G. longissima and 50% in H. cornea in PAB than in the PAR treatment. Finally, the antioxidant activity was also higher in the PAB treatment. All of the species presented an effective mechanism of photoprotection based on the accumulation of photoprotective compounds with antioxidant activity, as well as a high dissipation of excitation energy (high NPQmax ).
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Affiliation(s)
- Félix Álvarez-Gómez
- Department of Ecology and Geology, Faculty of Sciences, University of Malaga, Campus Universitario de Teatinos s/n, 29071, Malaga, Spain
| | - Nathalie Korbee
- Department of Ecology and Geology, Faculty of Sciences, University of Malaga, Campus Universitario de Teatinos s/n, 29071, Malaga, Spain
| | - Félix L Figueroa
- Department of Ecology and Geology, Faculty of Sciences, University of Malaga, Campus Universitario de Teatinos s/n, 29071, Malaga, Spain
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Lalegerie F, Lajili S, Bedoux G, Taupin L, Stiger-Pouvreau V, Connan S. Photo-protective compounds in red macroalgae from Brittany: Considerable diversity in mycosporine-like amino acids (MAAs). MARINE ENVIRONMENTAL RESEARCH 2019; 147:37-48. [PMID: 31014905 DOI: 10.1016/j.marenvres.2019.04.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 03/29/2019] [Accepted: 04/01/2019] [Indexed: 05/05/2023]
Abstract
To cope with the biotic and abiotic stresses experienced within their environment, marine macroalgae have developed certain defence mechanisms including the synthesis of photo-protective molecules against light and particularly harmful UV radiation. The aim of this study was to screen selected red algae, a highly diverse phylogenetic group, for the production of photo-protective molecules. The pigment content and composition (i.e. chlorophyll-a, phycobiliproteins and carotenoids) and the composition of mycosporine-like amino acids (MAAs) were studied in 40 species of red macroalgae collected in Brittany (France), at two distinct periods (i.e. February and July 2017). A high inter-specific variability was demonstrated in terms of pigment content and MAA composition. Twenty-three potential MAAs were detected by HPLC, and six were identified by LC-MS (i.e. shinorine, palythine, asterina-330, porphyra-334, usurijene and palythene). This is the first study to report on the composition of pigments and MAAs in a diverse group of red seaweeds from Brittany, including some species for which the MAA composition has never been studied before. Nevertheless, the results suggested that some species of red algae are more likely to cope with high levels of light radiation since those species such as Bostrychia scorpioides, Porphyra dioica, Gracilaria vermiculophylla and Vertebrata lanosa are living in environments exposed to higher levels of irradiation, and had various MAAs in addition to their photo-protective pigments.
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Affiliation(s)
- Fanny Lalegerie
- Univ Brest, CNRS, IRD, Ifremer, LEMAR, F-29280, Plouzane, France.
| | - Sirine Lajili
- Univ Brest, CNRS, IRD, Ifremer, LEMAR, F-29280, Plouzane, France
| | - Gilles Bedoux
- Marine Biotechnology and Chemistry Laboratory (LBCM, EA 3884), University of South Brittany (UBS), 56017, Vannes, France
| | - Laure Taupin
- Marine Biotechnology and Chemistry Laboratory (LBCM, EA 3884), University of South Brittany (UBS), 56017, Vannes, France
| | | | - Solène Connan
- Univ Brest, CNRS, IRD, Ifremer, LEMAR, F-29280, Plouzane, France
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Pereira DT, Pereira B, Fonseca A, Ramlov F, Maraschin M, Álvarez-Gómez F, Figueroa FL, Schmidt ÉC, Bouzon ZL, Simioni C. Effects of Ultraviolet Radiation (UV-A+UV-B) on the Antioxidant Metabolism of the Red Macroalga Species Acanthophora spicifera (Rhodophyta, Ceramiales) From Different Salinity and Nutrient Conditions. Photochem Photobiol 2019; 95:999-1009. [PMID: 30811599 DOI: 10.1111/php.13094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 02/20/2019] [Indexed: 12/01/2022]
Abstract
Acanthophora spicifera (M.Vahl) Børgesen is a macroalga of great economic importance. This study evaluated the antioxidant responses of two algal populations of A. spicifera adapted to different abiotic conditions when exposed to ultraviolet-A+ultraviolet-B radiation (UV-A+UV-B). Experiments were performed using the water at two collection points for 7 days of acclimatization and 7 days of exposure to UVR (3 h per day), followed by metabolic analyses. At point 1, water of 30 ± 1 practical salinity unit (psu) had concentrations of 1.06 ± 0.27 mm NH 4 + , 8.47 ± 0.01 mm NO 3 - , 0.17 ± 0.01 mm PO 4 - 3 and pH 7.88. At point 2, water of 35 ± 1 psu had concentrations of 1.13 ± 0.05 mm NH 4 + , 3.73 ± 0.01 mm NO 3 - , 0.52 ± 0.01 mm PO 4 - 3 and pH 8.55. Chlorophyll a, phycobiliproteins, carotenoids, mycosporins, polyphenolics and antioxidant enzymes (catalase, superoxide dismutase and guaiacol peroxidase) were evaluated. The present study demonstrates that ultraviolet radiation triggers antioxidant activity in the A. spicifera. However, such activation resulted in greater responses in samples of the point 1, with lower salinity and highest concentration of nutrients.
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Affiliation(s)
- Débora Tomazi Pereira
- Plant Cell Biology Laboratory, Department of Cell Biology, Embryology and Genetics, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Bárbara Pereira
- Chemical Oceanography Laboratory, Department of Geosciences, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Alessandra Fonseca
- Chemical Oceanography Laboratory, Department of Geosciences, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Fernanda Ramlov
- Plant Morphogenesis and Biochemistry Laboratory, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Marcelo Maraschin
- Plant Morphogenesis and Biochemistry Laboratory, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Félix Álvarez-Gómez
- Department of Ecology and Geology, Faculty of Sciences, University of Malaga, Malaga, Spain
| | - Felix L Figueroa
- Department of Ecology and Geology, Faculty of Sciences, University of Malaga, Malaga, Spain
| | - Éder Carlos Schmidt
- Plant Cell Biology Laboratory, Department of Cell Biology, Embryology and Genetics, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Zenilda Laurita Bouzon
- Plant Cell Biology Laboratory, Department of Cell Biology, Embryology and Genetics, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Carmen Simioni
- Plant Cell Biology Laboratory, Department of Cell Biology, Embryology and Genetics, Federal University of Santa Catarina, Florianópolis, Brazil
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Leal PP, Hurd CL, Fernández PA, Roleda MY. Ocean acidification and kelp development: Reduced pH has no negative effects on meiospore germination and gametophyte development of Macrocystis pyrifera and Undaria pinnatifida. JOURNAL OF PHYCOLOGY 2017; 53:557-566. [PMID: 28164308 DOI: 10.1111/jpy.12518] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Accepted: 12/28/2016] [Indexed: 06/06/2023]
Abstract
The absorption of anthropogenic CO2 by the oceans is causing a reduction in the pH of the surface waters termed ocean acidification (OA). This could have substantial effects on marine coastal environments where fleshy (non-calcareous) macroalgae are dominant primary producers and ecosystem engineers. Few OA studies have focused on the early life stages of large macroalgae such as kelps. This study evaluated the effects of seawater pH on the ontogenic development of meiospores of the native kelp Macrocystis pyrifera and the invasive kelp Undaria pinnatifida, in south-eastern New Zealand. Meiospores of both kelps were released into four seawater pH treatments (pHT 7.20, extreme OA predicted for 2300; pHT 7.65, OA predicted for 2100; pHT 8.01, ambient pH; and pHT 8.40, pre-industrial pH) and cultured for 15 d. Meiospore germination, germling growth rate, and gametophyte size and sex ratio were monitored and measured. Exposure to reduced pHT (7.20 and 7.65) had positive effects on germling growth rate and gametophyte size in both M. pyrifera and U. pinnatifida, whereas, higher pHT (8.01 and 8.40) reduced the gametophyte size in both kelps. Sex ratio of gametophytes of both kelps was biased toward females under all pHT treatments, except for U. pinnatifida at pHT 7.65. Germling growth rate under OA was significantly higher in M. pyrifera compared to U. pinnatifida but gametophyte development was equal for both kelps under all seawater pHT treatments, indicating that the microscopic stages of the native M. pyrifera and the invasive U. pinnatifida will respond similarly to OA.
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Affiliation(s)
- Pablo P Leal
- Department of Botany, University of Otago, 479 Great King Street, Dunedin, 9016, New Zealand
- Institute for Marine and Antarctic Studies, University of Tasmania, 20 Castray Esplanade, Battery Point, Hobart, Tasmania, 7004, Australia
| | - Catriona L Hurd
- Department of Botany, University of Otago, 479 Great King Street, Dunedin, 9016, New Zealand
- Institute for Marine and Antarctic Studies, University of Tasmania, 20 Castray Esplanade, Battery Point, Hobart, Tasmania, 7004, Australia
| | - Pamela A Fernández
- Department of Botany, University of Otago, 479 Great King Street, Dunedin, 9016, New Zealand
- Institute for Marine and Antarctic Studies, University of Tasmania, 20 Castray Esplanade, Battery Point, Hobart, Tasmania, 7004, Australia
| | - Michael Y Roleda
- Department of Botany, University of Otago, 479 Great King Street, Dunedin, 9016, New Zealand
- Norwegian Institute of Bioeconomy Research, Kudalsveien 6, 8049, Bodø, Norway
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Navarro NP, Figueroa FL, Korbee N, Mansilla A, Plastino EM. Differential responses of tetrasporophytes and gametophytes of Mazzaella laminarioides (Gigartinales, Rhodophyta) under solar UV radiation. JOURNAL OF PHYCOLOGY 2016; 52:451-462. [PMID: 26990026 DOI: 10.1111/jpy.12407] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2015] [Accepted: 01/25/2016] [Indexed: 06/05/2023]
Abstract
The effects of solar UV radiation on mycosporine-like amino acids (MAAs), growth, photosynthetic pigments (Chl a, phycobiliproteins), soluble proteins (SP), and C and N content of Mazzaella laminarioides tetrasporophytes and gametophytes were investigated. Apical segments of tetrasporophytes and gametophytes were exposed to solar radiation under three treatments (PAR [P], PAR+UVA [PA], and PAR+UVA+UVB [PAB]) during 18 d in spring 2009, Punta Arenas, Chile. Samples were taken after 2, 6, 12, and 18 d of solar radiation exposure. Most of the parameters assessed on M. laminarioides were significantly influenced by the radiation treatment, and both gametophytes and tetrasporophytes seemed to respond differently when exposed to high UV radiation. The two main effects promoted by UV radiation were: (i) higher synthesis of MAAs in gametophytes than tetrasporophytes at 2 d, and (ii) a decrease in phycoerythrin, phycocyanin, and SPs, but an increase in MAA content in tetrasporophytes at 6 and 12 d of culture. Despite some changes that were observed in biochemical parameters in both tetrasporophytes and gametophytes of M. laminarioides when exposed to UVB radiation, these changes did not promote deleterious effects that might interfere with the growth in the long term (18 d). The tolerance and resistance of M. laminarioides to higher UV irradiance were expected, as this intertidal species is exposed to variation in solar radiation, especially during low tide.
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Affiliation(s)
- Nelso P Navarro
- Facultad de Ciencias, Universidad de Magallanes, Casilla 113-D, Punta Arenas, Chile
| | - Félix L Figueroa
- Departamento de Ecología, Facultad de Ciencias, Universidad de Málaga, Campus Universitario de Teatinos s/n, Málaga, 29071, España
| | - Nathalie Korbee
- Departamento de Ecología, Facultad de Ciencias, Universidad de Málaga, Campus Universitario de Teatinos s/n, Málaga, 29071, España
| | - Andrés Mansilla
- Facultad de Ciencias, Universidad de Magallanes, Casilla 113-D, Punta Arenas, Chile
| | - Estela M Plastino
- Instituto de Biociências, Universidade de São Paulo, Rua do Matão 277, Cidade Universitária, 05508-090, São Paulo, São Paulo, Brazil
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de Oliveira EM, Schmidt ÉC, Pereira DT, Bouzon ZL, Ouriques LC. Effects of UV-B radiation on germlings of the red macroalga Nemalion helminthoides (Rhodophyta). J Microsc Ultrastruct 2016; 4:85-94. [PMID: 30023214 PMCID: PMC6014211 DOI: 10.1016/j.jmau.2015.11.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 10/26/2015] [Accepted: 11/10/2015] [Indexed: 11/11/2022] Open
Abstract
Studies have clearly demonstrated the damaging effects of UV-B exposure on macroalgae, but few have reported the impact of UV-B on spore germination and development at juvenile stages. Therefore, this work aimed to analyze the effects of UV-B radiation on germlings of Nemalion helminthoides at the tetrasporophytic phase. To accomplish this, germlings of N. helminthoides were cultivated in the laboratory and separated into two groups. The control group was exposed onlyto photosynthetic radiation, while the treatment group was exposed to photosynthetic radiation + UV-B for 2 hours during a period of 12 days. Control germlings showed increasing cellular proliferation and accumulation of reserve substances, as well as intense ramification in the last observed stages between 9 days and 12 days of development. Moreover, the chloroplasts presented a typical globular pyrenoid, profusely traversed by thylakoid membranes. Treated germlings, by contrast, showed intracellular damage, such as cell wall thickness, loss of chloroplast organization, changes in mitochondrial cristae, and increasing atrophy of the Golgi bodies. Additionally, changes in developmental patterns were observed, including loss of polarity in the first divisions of carpospores and abnormal stem ramification. The quantification of autofluorescence data coincided with the ultrastructural changes observed in the chloroplasts of cells exposed to UV-B. It can be concluded that exposure to radiation changed the developmental pattern and morphology of the germlings of N. helminthoides.
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Affiliation(s)
- Eliana M de Oliveira
- Post-Graduate Program in Cell Biology and Development, Department of Cell Biology, Embryology and Genetics, Federal University of Santa Catarina 88049-900, CP 476, Florianópolis, Santa Catarina, Brazil.,Central Laboratory of Electron Microscopy, Federal University of Santa Catarina 88049-900, CP 476, Florianópolis, Santa Catarina, Brazil
| | - Éder C Schmidt
- Post-Graduate Program in Cell Biology and Development, Department of Cell Biology, Embryology and Genetics, Federal University of Santa Catarina 88049-900, CP 476, Florianópolis, Santa Catarina, Brazil
| | - Debora T Pereira
- Post-Graduate Program in Cell Biology and Development, Department of Cell Biology, Embryology and Genetics, Federal University of Santa Catarina 88049-900, CP 476, Florianópolis, Santa Catarina, Brazil
| | - Zenilda L Bouzon
- Post-Graduate Program in Cell Biology and Development, Department of Cell Biology, Embryology and Genetics, Federal University of Santa Catarina 88049-900, CP 476, Florianópolis, Santa Catarina, Brazil
| | - Luciane C Ouriques
- Post-Graduate Program in Cell Biology and Development, Department of Cell Biology, Embryology and Genetics, Federal University of Santa Catarina 88049-900, CP 476, Florianópolis, Santa Catarina, Brazil
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Navarro NP, Figueroa FL, Korbee N, Mansilla A, Matsuhiro B, Barahona T, Plastino EM. The Effects of NO3− Supply onMazzaella laminarioides(Rhodophyta, Gigartinales) from Southern Chile. Photochem Photobiol 2014; 90:1299-307. [DOI: 10.1111/php.12344] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Accepted: 09/03/2014] [Indexed: 11/27/2022]
Affiliation(s)
- Nelso P. Navarro
- Facultad de Ciencias; Universidad de Magallanes; Punta Arenas Chile
| | - Félix L. Figueroa
- Departamento de Ecología; Facultad de Ciencias; Universidad de Málaga; Málaga Spain
| | - Nathalie Korbee
- Departamento de Ecología; Facultad de Ciencias; Universidad de Málaga; Málaga Spain
| | - Andrés Mansilla
- Facultad de Ciencias; Universidad de Magallanes; Punta Arenas Chile
- Laboratorio de Macroalgas Antárticas y Subantárticas; Universidad de Magallanes & Instituto de Ecología y Biodiversidad (IEB); Punta Arenas Chile
| | - Betty Matsuhiro
- Facultad de Química y Biología; Universidad de Santiago de Chile; Santiago Chile
| | - Tamara Barahona
- Facultad de Química y Biología; Universidad de Santiago de Chile; Santiago Chile
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Simioni C, Schmidt EC, Felix MRDL, Polo LK, Rover T, Kreusch M, Pereira DT, Chow F, Ramlov F, Maraschin M, Bouzon ZL. Effects of ultraviolet radiation (UVA+UVB) on young gametophytes of Gelidium floridanum: growth rate, photosynthetic pigments, carotenoids, photosynthetic performance, and ultrastructure. Photochem Photobiol 2014; 90:1050-60. [PMID: 24893751 DOI: 10.1111/php.12296] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2014] [Accepted: 05/22/2014] [Indexed: 11/26/2022]
Abstract
This study investigated the effects of radiation (PAR+UVA+UVB) on the development and growth rates (GRs) of young gametophytes of Gelidium floridanum. In addition, photosynthetic pigments were quantified, carotenoids identified, and photosynthetic performance assessed. Over a period of 3 days, young gametophytes were cultivated under laboratory conditions and exposed to photosynthetically active radiation (PAR) at 80 μmol photons m(-2) s(-1) and PAR+UVA (0.70 W m(-2))+UVB (0.35 W m(-2)) for 3 h per day. The samples were processed for light and electron microscopy to analyze the ultrastructure features, as well as carry out metabolic studies of GRs, quantify the content of photosynthetic pigments, identify carotenoids and assess photosynthetic performance. PAR+UVA+UVB promoted increase in cell wall thickness, accumulation of floridean starch grains in the cytoplasm and disruption of chloroplast internal organization. Algae exposed to PAR+UVA+UVB also showed a reduction in GR of 97%. Photosynthetic pigments, in particular, phycoerythrin and allophycocyanin contents, decreased significantly from UV radiation exposure. This result agrees with the decrease in photosynthetic performance observed after exposure to ultraviolet radiation, as measured by a decrease in the electron transport rate (ETR), where values of ETRmax declined approximately 44.71%. It can be concluded that radiation is a factor that affects the young gametophytes of G. floridanum at this stage of development.
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Affiliation(s)
- Carmen Simioni
- Plant Cell Biology Laboratory, Department of Cell Biology, Embryology and Genetics, Federal University of Santa Catarina, Florianópolis, SC, Brazil
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Hu ZM, Juan LB. Adaptation mechanisms and ecological consequences of seaweed invasions: a review case of agarophyte Gracilaria vermiculophylla. Biol Invasions 2013. [DOI: 10.1007/s10530-013-0558-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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