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Telegina TA, Vechtomova YL, Aybush AV, Buglak AA, Kritsky MS. Isomerization of carotenoids in photosynthesis and metabolic adaptation. Biophys Rev 2023; 15:887-906. [PMID: 37974987 PMCID: PMC10643480 DOI: 10.1007/s12551-023-01156-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Accepted: 09/22/2023] [Indexed: 11/19/2023] Open
Abstract
In nature, carotenoids are present as trans- and cis-isomers. Various physical and chemical factors like light, heat, acids, catalytic agents, and photosensitizers can contribute to the isomerization of carotenoids. Living organisms in the process of evolution have developed different mechanisms of adaptation to light stress, which can also involve isomeric forms of carotenoids. Particularly, light stress conditions can enhance isomerization processes. The purpose of this work is to review the recent studies on cis/trans isomerization of carotenoids as well as the role of carotenoid isomers for the light capture, energy transfer, photoprotection in light-harvesting complexes, and reaction centers of the photosynthetic apparatus of plants and other photosynthetic organisms. The review also presents recent studies of carotenoid isomers for the biomedical aspects, showing cis- and trans-isomers differ in bioavailability, antioxidant activity and biological activity, which can be used for therapeutic and prophylactic purposes.
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Affiliation(s)
- T. A. Telegina
- Research Center of Biotechnology of the Russian Academy of Sciences, 33 Leninsky Prospect, Building 2, 119071 Moscow, Russia
| | - Yuliya L. Vechtomova
- Research Center of Biotechnology of the Russian Academy of Sciences, 33 Leninsky Prospect, Building 2, 119071 Moscow, Russia
| | - A. V. Aybush
- N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, 4 Kosygina Street, Building 1, 119991 Moscow, Russia
| | - A. A. Buglak
- Saint Petersburg State University, 7-9 Universitetskaya Emb., 199034 Saint Petersburg, Russia
| | - M. S. Kritsky
- Research Center of Biotechnology of the Russian Academy of Sciences, 33 Leninsky Prospect, Building 2, 119071 Moscow, Russia
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2
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Fusi F, Romano G, Speranza G, Agati G. Photon- and Singlet-Oxygen-Induced Cis-Trans Isomerization of the Water-Soluble Carotenoid Crocin. Int J Mol Sci 2023; 24:10783. [PMID: 37445961 DOI: 10.3390/ijms241310783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 06/20/2023] [Accepted: 06/25/2023] [Indexed: 07/15/2023] Open
Abstract
Studying the cis-trans isomerization process in crocin (CR), one of the few water-soluble carotenoids extracted from saffron, is important to better understand the physiological role of cis-carotenoids in vivo and their potential as antioxidants in therapeutic applications. For that, cis-trans isomerization of both methanol- and water-dissolved CR was induced by light or thermally generated singlet oxygen (1O2). The kinetics of molecular concentrations were monitored by both high-performance liquid chromatography (HPLC) and non-destructive spectrophotometric methods. These last made it possible to simultaneously follow the cis-trans isomerization, the possible bleaching of compounds and the amount of thermally generated 1O2. Our results were in accordance with a comprehensive model where the cis-trans isomerization occurs as relaxation from the triplet state of all-trans- or 13-cis-CR, whatever is the way to populate the CR triplet state, either by photon or 1O2 energy transfer. The process is much more (1.9 to 10-fold) efficient from cis to trans than vice versa. In H2O, a 1O2-induced bleaching effect on the starting CR was not negligible. However, the CR "flip-flop" isomerization reaction could still occur, suggesting that this process can represent an efficient mechanism for quenching of reactive oxygen species (ROS) in vivo, with a limited need of carotenoid regeneration.
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Affiliation(s)
- Franco Fusi
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Viale G. Pieraccini, 6, 50139 Florence, Italy
| | - Giovanni Romano
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Viale G. Pieraccini, 6, 50139 Florence, Italy
| | - Giovanna Speranza
- Department of Chemistry, University of Milan, Via Golgi 19, 20133 Milan, Italy
| | - Giovanni Agati
- "Nello Carrara" Institute of Applied Physics (IFAC), National Research Council (CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
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3
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Banh ATM, Thiele B, Chlubek A, Hombach T, Kleist E, Matsubara S. Combination of long-term 13CO 2 labeling and isotopolog profiling allows turnover analysis of photosynthetic pigments in Arabidopsis leaves. PLANT METHODS 2022; 18:114. [PMID: 36183136 PMCID: PMC9526918 DOI: 10.1186/s13007-022-00946-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Living cells maintain and adjust structural and functional integrity by continual synthesis and degradation of metabolites and macromolecules. The maintenance and adjustment of thylakoid membrane involve turnover of photosynthetic pigments along with subunits of protein complexes. Quantifying their turnover is essential to understand the mechanisms of homeostasis and long-term acclimation of photosynthetic apparatus. Here we report methods combining whole-plant long-term 13CO2 labeling and liquid chromatography - mass spectrometry (LC-MS) analysis to determine the size of non-labeled population (NLP) of carotenoids and chlorophylls (Chl) in leaf pigment extracts of partially 13C-labeled plants. RESULTS The labeling chamber enabled parallel 13CO2 labeling of up to 15 plants of Arabidopsis thaliana with real-time environmental monitoring ([CO2], light intensity, temperature, relative air humidity and pressure) and recording. No significant difference in growth or photosynthetic pigment composition was found in leaves after 7-d exposure to normal CO2 (~ 400 ppm) or 13CO2 in the labeling chamber, or in ambient air outside the labeling chamber (control). Following chromatographic separation of the pigments and mass peak assignment by high-resolution Fourier-transform ion cyclotron resonance MS, mass spectra of photosynthetic pigments were analyzed by triple quadrupole MS to calculate NLP. The size of NLP remaining after the 7-d 13CO2 labeling was ~ 10.3% and ~ 11.5% for all-trans- and 9-cis-β-carotene, ~ 21.9% for lutein, ~ 18.8% for Chl a and 33.6% for Chl b, highlighting non-uniform turnover of these pigments in thylakoids. Comparable results were obtained in all replicate plants of the 13CO2 labeling experiment except for three that were showing anthocyanin accumulation and growth impairment due to insufficient water supply (leading to stomatal closure and less 13C incorporation). CONCLUSIONS Our methods allow 13CO2 labeling and estimation of NLP for photosynthetic pigments with high reproducibility despite potential variations in [13CO2] between the experiments. The results indicate distinct turnover rates of carotenoids and Chls in thylakoid membrane, which can be investigated in the future by time course experiments. Since 13C enrichment can be measured in a range of compounds, long-term 13CO2 labeling chamber, in combination with appropriate MS methods, facilitates turnover analysis of various metabolites and macromolecules in plants on a time scale of hours to days.
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Affiliation(s)
- Anh Thi-Mai Banh
- IBG-2: Plant Sciences, Forschungszentrum Jülich, 52425, Jülich, Germany
| | - Björn Thiele
- IBG-2: Plant Sciences, Forschungszentrum Jülich, 52425, Jülich, Germany
- IBG-3: Agrosphere, Forschungszentrum Jülich, 52425, Jülich, Germany
| | - Antonia Chlubek
- IBG-2: Plant Sciences, Forschungszentrum Jülich, 52425, Jülich, Germany
| | - Thomas Hombach
- IBG-2: Plant Sciences, Forschungszentrum Jülich, 52425, Jülich, Germany
| | - Einhard Kleist
- IBG-2: Plant Sciences, Forschungszentrum Jülich, 52425, Jülich, Germany
| | - Shizue Matsubara
- IBG-2: Plant Sciences, Forschungszentrum Jülich, 52425, Jülich, Germany.
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Zbyradowski M, Duda M, Wisniewska-Becker A, Heriyanto, Rajwa W, Fiedor J, Cvetkovic D, Pilch M, Fiedor L. Triplet-driven chemical reactivity of β-carotene and its biological implications. Nat Commun 2022; 13:2474. [PMID: 35513374 PMCID: PMC9072317 DOI: 10.1038/s41467-022-30095-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 04/14/2022] [Indexed: 11/09/2022] Open
Abstract
The endoperoxides of β-carotene (βCar-EPOs) are regarded as main products of the chemical deactivation of 1O2 by β-carotene, one of the most important antioxidants, following a concerted singlet-singlet reaction. Here we challenge this view by showing that βCar-EPOs are formed in the absence of 1O2 in a non-concerted triplet-triplet reaction: 3O2 + 3β-carotene → βCar-EPOs, in which 3β-carotene manifests a strong biradical character. Thus, the reactivity of β-carotene towards oxygen is governed by its excited triplet state. βCar-EPOs, while being stable in the dark, are photochemically labile, and are a rare example of nonaromatic endoperoxides that release 1O2, again not in a concerted reaction. Their light-induced breakdown triggers an avalanche of free radicals, which accounts for the pro-oxidant activity of β-carotene and the puzzling swap from its anti- to pro-oxidant features. Furthermore, we show that βCar-EPOs, and carotenoids in general, weakly sensitize 1O2. These findings underlie the key role of the triplet state in determining the chemical and photophysical features of β-carotene. They shake up the prevailing models of carotenoid photophysics, the anti-oxidant functioning of β-carotene, and the role of 1O2 in chemical signaling in biological photosynthetic systems. βCar-EPOs and their degradation products are not markers of 1O2 and oxidative stress but of the overproduction of extremely hazardous chlorophyll triplets in photosystems. Hence, the chemical signaling of overexcitation of the photosynthetic apparatus is based on a 3chlorophyll-3β-carotene relay, rather than on extremely short-lived 1O2.
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Affiliation(s)
- Mateusz Zbyradowski
- Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Cracow, Poland
| | - Mariusz Duda
- Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Cracow, Poland
| | - Anna Wisniewska-Becker
- Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Cracow, Poland
| | - Heriyanto
- Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Cracow, Poland.,Ma Chung Research Center for Photosynthetic Pigments, Ma Chung University, Villa Puncak Tidar N-01, Malang, 65151, Indonesia
| | - Weronika Rajwa
- Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Cracow, Poland
| | - Joanna Fiedor
- Faculty of Physics and Applied Computer Science, AGH-University of Science and Technology, Mickiewicza 30, 30-059, Cracow, Poland
| | - Dragan Cvetkovic
- Faculty of Technology, University of Niš, 16000, Leskovac, Serbia
| | - Mariusz Pilch
- Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Cracow, Poland.,Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387, Kraków, Poland
| | - Leszek Fiedor
- Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Cracow, Poland.
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Boonlao N, Ruktanonchai UR, Anal AK. Enhancing bioaccessibility and bioavailability of carotenoids using emulsion-based delivery systems. Colloids Surf B Biointerfaces 2021; 209:112211. [PMID: 34800865 DOI: 10.1016/j.colsurfb.2021.112211] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 10/25/2021] [Accepted: 11/07/2021] [Indexed: 02/07/2023]
Abstract
The consumption of foods rich in antioxidants, vitamins, minerals including carotenoids etc. can boost the immune system to help fight off various infections including SARS- CoV 2 and other viruses. Carotenoids have been gaining attention particularly in food and pharmaceutical industries owing to their diverse functions including their role as pro-vitamin A activity, potent antioxidant properties, and quenching of reactive oxygen (ROS), such as singlet oxygen and lipid peroxides within the lipid bilayer of the cell membrane. Nevertheless, carotenoids being lipophilic, have poor solubility in aqueous medium and are also chemically instable. They are susceptible to degrade under stimuli environmental conditions during food processing, storage and gastrointestinal passage. They also exhibit poor oral bioavailability, thus, their applications in aqueous-based foods are limited. As a consequent, suitable delivery systems including colloids-based are needed to enhance the solubility, stability and bioavailability of carotenoids. This review presents challenges of incorporation and delivery of carotenoids focusing on stability and factors affecting bioavailability. Furthermore, designed factors impacting bioaccessibility and bioavailability of carotenoids using emulsion-based delivery systems are explicitly explained. Each delivery system exhibits its own advantages and disadvantages; thus, the delivery systems should be designed based on their targets and their further applications.
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Affiliation(s)
- Nuntarat Boonlao
- Department of Food, Agriculture and Bioresources, Asian Institute of Technology, P.O. Box 4, Klong Luang, Pathum Thani 12120, Thailand
| | | | - Anil Kumar Anal
- Department of Food, Agriculture and Bioresources, Asian Institute of Technology, P.O. Box 4, Klong Luang, Pathum Thani 12120, Thailand.
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Widomska J, SanGiovanni JP, Subczynski WK. Why is Zeaxanthin the Most Concentrated Xanthophyll in the Central Fovea? Nutrients 2020; 12:nu12051333. [PMID: 32392888 PMCID: PMC7284714 DOI: 10.3390/nu12051333] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 05/04/2020] [Accepted: 05/05/2020] [Indexed: 12/17/2022] Open
Abstract
Diet-based xanthophylls (zeaxanthin and lutein) are conditionally essential polar carotenoids preferentially accreted in high concentrations (1 mM) to the central retina, where they have the capacity to impart unique physiologically significant biophysical biochemical properties implicated in cell function, rescue, and survival. Macular xanthophylls interact with membrane-bound proteins and lipids to absorb/attenuate light energy, modulate oxidative stress and redox balance, and influence signal transduction cascades implicated in the pathophysiology of age-related macular degeneration. There is exclusive transport, sequestration, and appreciable bioamplification of macular xanthophylls from the circulating carotenoid pool to the retina and within the retina to regions required for high-resolution sensory processing. The distribution of diet-based macular xanthophylls and the lutein metabolite meso-zeaxanthin varies considerably by retinal eccentricity. Zeaxanthin concentrations are 2.5-fold higher than lutein in the cone-dense central fovea. This is an ~20-fold increase in the molar ratio relative to eccentric retinal regions with biochemically detectable macular xanthophylls. In this review, we discuss how the differences in the specific properties of lutein and zeaxanthin could help explain the preferential accumulation of zeaxanthin in the most vulnerable region of the macula.
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Affiliation(s)
- Justyna Widomska
- Department of Biophysics, Medical University of Lublin, Jaczewskiego 4, 20-090 Lublin, Poland
- Correspondence: (J.W.); (J.P.S.); Tel.: 48-81448-6333 (J.W.)
| | - John Paul SanGiovanni
- Department of Nutritional Sciences, The University of Arizona, 1657 East Helen Street, Tucson, AZ 85721, USA
- Correspondence: (J.W.); (J.P.S.); Tel.: 48-81448-6333 (J.W.)
| | - Witold K. Subczynski
- Department of Biophysics, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI 53226, USA;
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7
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Kulikov EA, Kulikova IS, Vasilov RG, Selishcheva AA. The Effect of the Solvent Nature and Lighting on Isomerization and Oxidative Degradation of Astaxanthin. Biophysics (Nagoya-shi) 2020. [DOI: 10.1134/s0006350920030112] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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8
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Widomska J, Welc R, Gruszecki WI. The effect of carotenoids on the concentration of singlet oxygen in lipid membranes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2019; 1861:845-851. [PMID: 30689980 DOI: 10.1016/j.bbamem.2019.01.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 01/20/2019] [Accepted: 01/23/2019] [Indexed: 10/27/2022]
Abstract
An effect of β-carotene and its polar derivative, zeaxanthin, on a concentration of singlet oxygen in lipid membranes was studied in a model system. The carotenoids were incorporated into the membranes of small unilamellar liposomes at a concentration of 0.15 mol% with respect to lipid. Singlet oxygen was generated in a liposome suspension via photosensitization of toluidine blue, and its concentration in a membrane was detected with application of a specific fluorescence probe (singlet oxygen sensor green reagent) located in the lipid bilayer. The results show the carotenoid-dependent decrease in the concentration of singlet oxygen in the membranes formed with unsaturated lipids (egg yolk phosphatidylcholine and digalactosyldiacylglycerol) but not in the case of the membranes formed with a saturated lipid (dimyristoylphosphatidylcholine). The effect of carotenoids was about twice as high as in the case of cholesterol present in liposomes at the same concentration. The results suggest that carotenoids protect membranes formed with unsaturated lipids against singlet oxygen through combined activity of different mechanisms: modification of structural properties of the lipid bilayers, physical quenching of singlet oxygen and chemical reactions leading to the pigment oxidation. The latter conclusion is based on the analysis of the absorption spectra of liposomes before and after light exposure. An importance of the different modes of protection by carotenoids against single oxygen toxicity towards biomembranes is discussed.
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Affiliation(s)
- Justyna Widomska
- Department of Biophysics, Medical University of Lublin, Lublin, Poland.
| | - Renata Welc
- Department of Biophysics, Institute of Physics, Maria Curie-Sklodowska University, Lublin, Poland
| | - Wieslaw I Gruszecki
- Department of Biophysics, Institute of Physics, Maria Curie-Sklodowska University, Lublin, Poland
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9
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Grudzinski W, Piet M, Luchowski R, Reszczynska E, Welc R, Paduch R, Gruszecki WI. Different molecular organization of two carotenoids, lutein and zeaxanthin, in human colon epithelial cells and colon adenocarcinoma cells. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 188:57-63. [PMID: 28689079 DOI: 10.1016/j.saa.2017.06.041] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 06/12/2017] [Accepted: 06/30/2017] [Indexed: 06/07/2023]
Abstract
Two cell lines, human normal colon epithelial cells (CCD 841 CoTr) and human colon adenocarcinoma cells (HT-29) were cultured in the presence of exogenous carotenoids, either zeaxanthin or lutein. Both carotenoids demonstrated cytotoxicity with respect to cancer cells but not to normal cells. Cells from both the cell lines were analyzed with application of fluorescence lifetime imaging microscopy and Raman scattering microscopy. Both imaging techniques show effective incorporation of carotenoid molecules into growing cells. Comparison of the Raman scattering and fluorescence lifetime characteristics reveals different molecular organization of carotenoids in the carcinoma and normal cells. The main difference consists in a carotenoid aggregation level which is substantially lower in the carcinoma cells as compared to the normal cells. Different molecular organization of carotenoids was interpreted in terms of a different metabolism of normal and carcinoma cells and has been concluded to provide a possibility of cancer diagnosis based on spectroscopic analyses.
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Affiliation(s)
- Wojciech Grudzinski
- Department of Biophysics, Institute of Physics, Maria Curie-Sklodowska University, 20-031 Lublin, Poland.
| | - Mateusz Piet
- Department of Virology and Immunology, Institute of Microbiology and Biotechnology, Maria Curie-Sklodowska University, 20-033 Lublin, Poland
| | - Rafal Luchowski
- Department of Biophysics, Institute of Physics, Maria Curie-Sklodowska University, 20-031 Lublin, Poland
| | - Emilia Reszczynska
- Department of Biophysics, Institute of Physics, Maria Curie-Sklodowska University, 20-031 Lublin, Poland
| | - Renata Welc
- Department of Biophysics, Institute of Physics, Maria Curie-Sklodowska University, 20-031 Lublin, Poland
| | - Roman Paduch
- Department of Virology and Immunology, Institute of Microbiology and Biotechnology, Maria Curie-Sklodowska University, 20-033 Lublin, Poland; Department of General Ophthalmology, Medical University of Lublin, 20-079 Lublin, Poland
| | - Wieslaw I Gruszecki
- Department of Biophysics, Institute of Physics, Maria Curie-Sklodowska University, 20-031 Lublin, Poland.
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10
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Desmarchelier C, Borel P. Overview of carotenoid bioavailability determinants: From dietary factors to host genetic variations. Trends Food Sci Technol 2017. [DOI: 10.1016/j.tifs.2017.03.002] [Citation(s) in RCA: 148] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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11
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Murakami K, Honda M, Wahyudiono, Kanda H, Goto M. Thermal isomerization of (all-E)-lycopene and separation of the Z-isomers by using a low boiling solvent: Dimethyl ether. SEP SCI TECHNOL 2017. [DOI: 10.1080/01496395.2017.1374412] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Kazuya Murakami
- Department of Materials Science and Engineering, Nagoya University, Nagoya, Japan
| | - Masaki Honda
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan
| | - Wahyudiono
- Department of Materials Science and Engineering, Nagoya University, Nagoya, Japan
| | - Hideki Kanda
- Department of Materials Science and Engineering, Nagoya University, Nagoya, Japan
| | - Motonobu Goto
- Department of Materials Science and Engineering, Nagoya University, Nagoya, Japan
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12
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Palermo G, Barberi L, Perotto G, Caputo R, De Sio L, Umeton C, Omenetto FG. Conformal Silk-Azobenzene Composite for Optically Switchable Diffractive Structures. ACS APPLIED MATERIALS & INTERFACES 2017; 9:30951-30957. [PMID: 28820237 DOI: 10.1021/acsami.7b09986] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The use of biomaterials as optical components has recently attracted attention because of their ease of functionalization and fabrication, along with their potential use when integrated with biological materials. We present here an observation of the optical properties of a silk-azobenzene material (Azosilk) and demonstrate the operation of an Azosilk/PDMS composite structure that serves as a conformable and switchable optical diffractive structure. Characterization of thermal and isomeric properties of the device, along with its overall performance, is presented in terms of diffractive characteristics and response times. The ease of manufacturing and functionalization opens a promising avenue for rapid device prototyping and interfaces of expanded utility.
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Affiliation(s)
- Giovanna Palermo
- Department of Physics, University of Calabria , 87036 Arcavacata di Rende, Cosenza, Italy
- CNR-Nanotec, 87036 Cosenza, Italy
| | - Luca Barberi
- Department of Physics, University of Calabria , 87036 Arcavacata di Rende, Cosenza, Italy
| | - Giovanni Perotto
- Silklab, Department of Biomedical Engineering, Tufts University , 200 Boston Avenue, Suite 4875, Medford, Massachusetts 02155, United States
| | - Roberto Caputo
- Department of Physics, University of Calabria , 87036 Arcavacata di Rende, Cosenza, Italy
- CNR-Nanotec, 87036 Cosenza, Italy
| | - Luciano De Sio
- CNR-Nanotec, 87036 Cosenza, Italy
- Beam Engineering for Advanced Measurements Company, 1300 Lee Road, Orlando, Florida 32789, United States
| | - Cesare Umeton
- Department of Physics, University of Calabria , 87036 Arcavacata di Rende, Cosenza, Italy
- CNR-Nanotec, 87036 Cosenza, Italy
| | - Fiorenzo G Omenetto
- Silklab, Department of Biomedical Engineering, Tufts University , 200 Boston Avenue, Suite 4875, Medford, Massachusetts 02155, United States
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13
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Grudzinski W, Nierzwicki L, Welc R, Reszczynska E, Luchowski R, Czub J, Gruszecki WI. Localization and Orientation of Xanthophylls in a Lipid Bilayer. Sci Rep 2017; 7:9619. [PMID: 28852075 PMCID: PMC5575131 DOI: 10.1038/s41598-017-10183-7] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 08/07/2017] [Indexed: 02/05/2023] Open
Abstract
Xanthophylls (polar carotenoids) play diverse biological roles, among which are modulation of the physical properties of lipid membranes and protection of biomembranes against oxidative damage. Molecular mechanisms underlying these functions are intimately related to the localization and orientation of xanthophyll molecules in lipid membranes. In the present work, we address the problem of localization and orientation of two xanthophylls present in the photosynthetic apparatus of plants and in the retina of the human eye, zeaxanthin and lutein, in a single lipid bilayer membrane formed with dimyristoylphosphatidylcholine. By using fluorescence microscopic analysis and Raman imaging of giant unilamellar vesicles, as well as molecular dynamics simulations, we show that lutein and zeaxanthin adopt a very similar transmembrane orientation within a lipid membrane. In experimental and computational approach, the average tilt angle of xanthophylls relative to the membrane normal is independently found to be ~40 deg, and results from hydrophobic mismatch between the membrane thickness and the distance between the terminal hydroxyl groups of the xanthophylls. Consequences of such a localization and orientation for biological activity of xanthophylls are discussed.
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Affiliation(s)
- Wojciech Grudzinski
- Department of Biophysics, Institute of Physics, Maria Curie-Sklodowska University, 20-031, Lublin, Poland
| | - Lukasz Nierzwicki
- Department of Physical Chemistry, Gdansk University of Technology, Narutowicza 11/12, 80-233, Gdansk, Poland
| | - Renata Welc
- Department of Biophysics, Institute of Physics, Maria Curie-Sklodowska University, 20-031, Lublin, Poland
| | - Emilia Reszczynska
- Department of Biophysics, Institute of Physics, Maria Curie-Sklodowska University, 20-031, Lublin, Poland
| | - Rafal Luchowski
- Department of Biophysics, Institute of Physics, Maria Curie-Sklodowska University, 20-031, Lublin, Poland
| | - Jacek Czub
- Department of Physical Chemistry, Gdansk University of Technology, Narutowicza 11/12, 80-233, Gdansk, Poland.
| | - Wieslaw I Gruszecki
- Department of Biophysics, Institute of Physics, Maria Curie-Sklodowska University, 20-031, Lublin, Poland.
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14
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Singh A, Krishnan KP, Prabaharan D, Sinha RK. Lipid membrane modulation and pigmentation: A cryoprotection mechanism in Arctic pigmented bacteria. J Basic Microbiol 2017; 57:770-780. [DOI: 10.1002/jobm.201700182] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 05/31/2017] [Accepted: 06/06/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Archana Singh
- National Centre for Antarctic and Ocean Research; Headland Sada; Vasco-da-Gama Goa India
| | - Kottekattu P. Krishnan
- National Centre for Antarctic and Ocean Research; Headland Sada; Vasco-da-Gama Goa India
| | - Dharmar Prabaharan
- National Facility for Marine Cyanobacteria; Bharathidasan University; Tiruchirappalli Tamil Nadu India
| | - Rupesh K. Sinha
- National Centre for Antarctic and Ocean Research; Headland Sada; Vasco-da-Gama Goa India
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15
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Materová Z, Sobotka R, Zdvihalová B, Oravec M, Nezval J, Karlický V, Vrábl D, Štroch M, Špunda V. Monochromatic green light induces an aberrant accumulation of geranylgeranyled chlorophylls in plants. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2017; 116:48-56. [PMID: 28527413 DOI: 10.1016/j.plaphy.2017.05.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 05/03/2017] [Accepted: 05/04/2017] [Indexed: 05/27/2023]
Abstract
Light quality is an important environmental factor affecting the biosynthesis of photosynthetic pigments whose production seems to be affected not only quantitatively but also qualitatively. In this work, we set out to identify unusual pigment detected in leaves of barley (Hordeum vulgare L.) and explain its presence in plants grown under monochromatic green light (GL; 500-590 nm). The chromatographic analysis (HPLC-DAD) revealed that a peak belonging to this unknown pigment is eluted between chlorophyll (Chl) a and b. This pigment exhibited the same absorption spectrum and fluorescence excitation and emission spectra as Chl a. It was negligible in control plants cultivated under white light of the same irradiance (photosynthetic photon flux density of 240 μmol m-2 s-1). Mass spectrometry analysis of this pigment (ions m/z = 889 [M-H]-; m/z = 949 [M+acetic acid-H]-) indicates that it is Chl a with a tetrahydrogengeranylgeraniol side chain (containing two double bonds in a phytyl side chain; Chl aTHGG), which is an intermediate in Chl a synthesis. In plants grown under GL, the proportion of Chl aTHGG to total Chl content rose to approximately 8% and 16% after 7 and 14 days of cultivation, respectively. Surprisingly, plants cultivated under GL exhibited drastically increased concentration of the enzyme geranylgeranyl reductase, which is responsible for the reduction of phytyl chain double bonds in the Chl synthesis pathway. This indicates impaired activity of this enzyme in GL-grown plants. A similar effect of GL on Chl synthesis was observed for distinct higher plant species.
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Affiliation(s)
- Zuzana Materová
- Faculty of Science, University of Ostrava, 30. dubna 22, 701 03 Ostrava 1, Czech Republic.
| | - Roman Sobotka
- Centre Algatech, Institute of Microbiology, The Czech Academy of Sciences, 379 81 Třeboň, Czech Republic
| | - Barbora Zdvihalová
- Centre Algatech, Institute of Microbiology, The Czech Academy of Sciences, 379 81 Třeboň, Czech Republic
| | - Michal Oravec
- Global Change Research Institute, The Czech Academy of Sciences, Bělidla 986/4a, 603 00 Brno, Czech Republic
| | - Jakub Nezval
- Faculty of Science, University of Ostrava, 30. dubna 22, 701 03 Ostrava 1, Czech Republic
| | - Václav Karlický
- Faculty of Science, University of Ostrava, 30. dubna 22, 701 03 Ostrava 1, Czech Republic; Global Change Research Institute, The Czech Academy of Sciences, Bělidla 986/4a, 603 00 Brno, Czech Republic
| | - Daniel Vrábl
- Faculty of Science, University of Ostrava, 30. dubna 22, 701 03 Ostrava 1, Czech Republic
| | - Michal Štroch
- Faculty of Science, University of Ostrava, 30. dubna 22, 701 03 Ostrava 1, Czech Republic; Global Change Research Institute, The Czech Academy of Sciences, Bělidla 986/4a, 603 00 Brno, Czech Republic
| | - Vladimír Špunda
- Faculty of Science, University of Ostrava, 30. dubna 22, 701 03 Ostrava 1, Czech Republic; Global Change Research Institute, The Czech Academy of Sciences, Bělidla 986/4a, 603 00 Brno, Czech Republic
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16
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Combinatorial Biosynthesis of Novel Multi-Hydroxy Carotenoids in the Red Yeast Xanthophyllomyces dendrorhous. J Fungi (Basel) 2017; 3:jof3010009. [PMID: 29371528 PMCID: PMC5715969 DOI: 10.3390/jof3010009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 02/09/2017] [Accepted: 02/14/2017] [Indexed: 11/16/2022] Open
Abstract
The red yeast Xanthophyllomyces dendrorhous is an established platform for the synthesis of carotenoids. It was used for the generation of novel multi oxygenated carotenoid structures. This was achieved by a combinatorial approach starting with the selection of a β-carotene accumulating mutant, stepwise pathway engineering by integration of three microbial genes into the genome and finally the chemical reduction of the resulting 4,4'-diketo-nostoxanthin (2,3,2',3'-tetrahydroxy-4,4'-diketo-β-carotene) and 4-keto-nostoxanthin (2,3,2',3'-tetrahydroxy-4-monoketo-β-carotene). Both keto carotenoids and the resulting 4,4'-dihydroxy-nostoxanthin (2,3,4,2',3',4'-hexahydroxy-β-carotene) and 4-hydroxy-nostoxanthin (2,3,4,2'3'-pentahydroxy-β-carotene) were separated by high-performance liquid chromatography (HPLC) and analyzed by mass spectrometry. Their molecular masses and fragmentation patterns allowed the unequivocal identification of all four carotenoids.
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17
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Welc R, Luchowski R, Grudzinski W, Puzio M, Sowinski K, Gruszecki WI. A Key Role of Xanthophylls That Are Not Embedded in Proteins in Regulation of the Photosynthetic Antenna Function in Plants, Revealed by Monomolecular Layer Studies. J Phys Chem B 2016; 120:13056-13064. [DOI: 10.1021/acs.jpcb.6b10393] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Renata Welc
- Department
of Biophysics, Institute of Physics, Maria Curie-Sklodowska University, 20-031 Lublin, Poland
| | - Rafal Luchowski
- Department
of Biophysics, Institute of Physics, Maria Curie-Sklodowska University, 20-031 Lublin, Poland
| | - Wojciech Grudzinski
- Department
of Biophysics, Institute of Physics, Maria Curie-Sklodowska University, 20-031 Lublin, Poland
| | - Michal Puzio
- Department
of Biophysics, Institute of Physics, Maria Curie-Sklodowska University, 20-031 Lublin, Poland
| | - Karol Sowinski
- Department
of Biophysics, Institute of Physics, Maria Curie-Sklodowska University, 20-031 Lublin, Poland
- Faculty
of Pharmacy, Medical University, Lublin, Poland
| | - Wieslaw I. Gruszecki
- Department
of Biophysics, Institute of Physics, Maria Curie-Sklodowska University, 20-031 Lublin, Poland
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18
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Fiedor L, Fiedor J, Pilch M. Effects of Molecular Symmetry on the Electronic Transitions in Carotenoids. J Phys Chem Lett 2016; 7:1821-9. [PMID: 27138647 DOI: 10.1021/acs.jpclett.6b00637] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The aim of this work is the verification of symmetry effects on the electronic absorption spectra of carotenoids. The symmetry breaking in cis-β-carotenes and in carotenoids with nonlinear π-electron system is of virtually no effect on the dark transitions in these pigments, in spite of the loss of the inversion center and evident changes in their electronic structure. In the cis isomers, the S2 state couples with the higher excited states and the extent of this coupling depends on the position of the cis bend. A confrontation of symmetry properties of carotenoids with their electronic absorption and IR and Raman spectra shows that they belong to the C1 or C2 but not the C2h symmetry group, as commonly assumed. In these realistic symmetries all the electronic transitions are symmetry-allowed and the absence of some transitions, such as the dark S0 → S1 transition, must have another physical origin. Most likely it is a severe deformation of the carotenoid molecule in the S1 state, unachievable directly from the ground state, which means that the Franck-Condon factors for a vertical S0 → S1 transition are negligible because the final state is massively displaced along the vibrational coordinates. The implications of our findings have an impact on the understanding of the photophysics and functioning of carotenoids.
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Affiliation(s)
- Leszek Fiedor
- Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University , Gronostajowa 7, 30-387 Kraków, Poland
| | - Joanna Fiedor
- Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University , Gronostajowa 7, 30-387 Kraków, Poland
- Faculty of Physics and Applied Computer Science, AGH-University of Science and Technology , Mickiewicza 30, 30-059 Kraków, Poland
| | - Mariusz Pilch
- Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University , Gronostajowa 7, 30-387 Kraków, Poland
- Faculty of Chemistry, Jagiellonian University , Ingardena 3, 30-060 Kraków, Poland
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19
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Grudzinski W, Janik E, Bednarska J, Welc R, Zubik M, Sowinski K, Luchowski R, Gruszecki WI. Light-Driven Reconfiguration of a Xanthophyll Violaxanthin in the Photosynthetic Pigment-Protein Complex LHCII: A Resonance Raman Study. J Phys Chem B 2016; 120:4373-82. [PMID: 27133785 DOI: 10.1021/acs.jpcb.6b01641] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Resonance Raman analysis of the photosynthetic complex LHCII, immobilized in a polyacrylamide gel, reveals that one of the protein-bound xanthophylls, assigned as violaxanthin, undergoes light-induced molecular reconfiguration. The phototransformation is selectively observed in a trimeric structure of the complex and is associated with a pronounced twisting and a trans-cis molecular configuration change of the polyene chain of the carotenoid. Among several spectral effects accompanying the reconfiguration there are ones indicating a carotenoid triplet state. Possible physiological importance of the light-induced violaxanthin reconfiguration as a mechanism associated with making the pigment available for enzymatic deepoxidation in the xanthophyll cycle is discussed.
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Affiliation(s)
- Wojciech Grudzinski
- Department of Biophysics, Institute of Physics, Maria Curie-Skłodowska University , 20-033 Lublin, Poland
| | - Ewa Janik
- Department of Biophysics, Institute of Physics, Maria Curie-Skłodowska University , 20-033 Lublin, Poland.,Department of Cell Biology, Institute of Biology and Biochemistry, Maria Curie-Sklodowska University , ul. Akademicka 19, 20-033 Lublin, Poland
| | - Joanna Bednarska
- Department of Biophysics, Institute of Physics, Maria Curie-Skłodowska University , 20-033 Lublin, Poland
| | - Renata Welc
- Department of Biophysics, Institute of Physics, Maria Curie-Skłodowska University , 20-033 Lublin, Poland
| | - Monika Zubik
- Department of Biophysics, Institute of Physics, Maria Curie-Skłodowska University , 20-033 Lublin, Poland.,Department of Metrology and Modelling of Agrophysical Processes, Institute of Agrophysics of Polish Academy of Sciences , Doswiadczalna 4, 20-290 Lublin, Poland
| | - Karol Sowinski
- Department of Biophysics, Institute of Physics, Maria Curie-Skłodowska University , 20-033 Lublin, Poland.,Chair and Department of Synthesis and Chemical Technology of Pharmaceutical Substances, Faculty of Pharmacy, Medical University , Chodzki 4a, 20-093 Lublin, Poland
| | - Rafal Luchowski
- Department of Biophysics, Institute of Physics, Maria Curie-Skłodowska University , 20-033 Lublin, Poland
| | - Wieslaw I Gruszecki
- Department of Biophysics, Institute of Physics, Maria Curie-Skłodowska University , 20-033 Lublin, Poland
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20
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Janik E, Bednarska J, Zubik M, Sowinski K, Luchowski R, Grudzinski W, Matosiuk D, Gruszecki WI. The xanthophyll cycle pigments, violaxanthin and zeaxanthin, modulate molecular organization of the photosynthetic antenna complex LHCII. Arch Biochem Biophys 2016; 592:1-9. [PMID: 26773208 DOI: 10.1016/j.abb.2016.01.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 12/18/2015] [Accepted: 01/05/2016] [Indexed: 10/22/2022]
Abstract
The effect of violaxanthin and zeaxanthin, two main carotenoids of the xanthophyll cycle, on molecular organization of LHCII, the principal photosynthetic antenna complex of plants, was studied in a model system based on lipid-protein membranes, by means of analysis of 77 K chlorophyll a fluorescence and "native" electrophoresis. Violaxanthin was found to promote trimeric organization of LHCII, contrary to zeaxanthin which was found to destabilize trimeric structures. Moreover, violaxanthin was found to induce decomposition of oligomeric LHCII structures formed in the lipid phase and characterized by the fluorescence emission band at 715 nm. Both pigments promoted formation of two-component supramolecular structures of LHCII and xanthophylls. The violaxanthin-stabilized structures were composed mostly of LHCII trimers while, the zeaxanthin-stabilized supramolecular structures of LHCII showed more complex organization which depended periodically on the xanthophyll content. The effect of the xanthophyll cycle pigments on molecular organization of LHCII was analyzed based on the results of molecular modeling and discussed in terms of a physiological meaning of this mechanism. Supramolecular structures of LHCII stabilized by violaxanthin, prevent uncontrolled oligomerization of LHCII, potentially leading to excitation quenching, therefore can be considered as structures protecting the photosynthetic apparatus against energy loses at low light intensities.
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Affiliation(s)
- Ewa Janik
- Department of Biophysics, Institute of Physics, Maria Curie-Skłodowska University, 20-031, Lublin, Poland
| | - Joanna Bednarska
- Department of Biophysics, Institute of Physics, Maria Curie-Skłodowska University, 20-031, Lublin, Poland
| | - Monika Zubik
- Department of Biophysics, Institute of Physics, Maria Curie-Skłodowska University, 20-031, Lublin, Poland
| | - Karol Sowinski
- Department of Biophysics, Institute of Physics, Maria Curie-Skłodowska University, 20-031, Lublin, Poland; Faculty of Pharmacy, Medical University, Lublin, Poland
| | - Rafal Luchowski
- Department of Biophysics, Institute of Physics, Maria Curie-Skłodowska University, 20-031, Lublin, Poland
| | - Wojciech Grudzinski
- Department of Biophysics, Institute of Physics, Maria Curie-Skłodowska University, 20-031, Lublin, Poland
| | | | - Wieslaw I Gruszecki
- Department of Biophysics, Institute of Physics, Maria Curie-Skłodowska University, 20-031, Lublin, Poland.
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21
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Carotenoid binding to proteins: Modeling pigment transport to lipid membranes. Arch Biochem Biophys 2015; 584:125-33. [DOI: 10.1016/j.abb.2015.09.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 08/25/2015] [Accepted: 09/02/2015] [Indexed: 11/23/2022]
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22
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Zhang Z, Xiao Y, Li D, Liu C. Identification and Quantification of All-Trans-Zeaxanthin and Its Cis-Isomers During Illumination in a Model System. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2015. [DOI: 10.1080/10942912.2015.1072209] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Zhongyuan Zhang
- Institute of Farm Product Processing, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Yadong Xiao
- Institute of Farm Product Processing, Jiangsu Academy of Agricultural Sciences, Nanjing, China
| | - Dajing Li
- Institute of Farm Product Processing, Jiangsu Academy of Agricultural Sciences, Nanjing, China
- College of Forestry, Northeast Forestry University, Harbin, China
| | - Chunquan Liu
- Institute of Farm Product Processing, Jiangsu Academy of Agricultural Sciences, Nanjing, China
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23
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Pasaporte MS, Rabaya FJR, Toleco MM, Flores DM. Xanthophyll content of selected vegetables commonly consumed in the Philippines and the effect of boiling. Food Chem 2014; 158:35-40. [DOI: 10.1016/j.foodchem.2014.02.090] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Revised: 01/29/2014] [Accepted: 02/18/2014] [Indexed: 11/24/2022]
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24
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Wu YH, Yu PS, Zhou YD, Xu L, Wang CS, Wu M, Oren A, Xu XW. Muricauda
antarctica sp. nov., a marine member of the
Flavobacteriaceae
isolated from Antarctic seawater. Int J Syst Evol Microbiol 2013; 63:3451-3456. [DOI: 10.1099/ijs.0.048355-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-stain-negative, rod-shaped bacterium with appendages, designated Ar-22T, was isolated from a seawater sample collected from the western part of Prydz Bay, near Cape Darnley, Antarctica. Strain Ar-22T grew optimally at 35 °C, at pH 7.5 and in the presence of 1–3 % (w/v) NaCl. The isolate was positive for casein, gelatin and Tween 20 decomposition and negative for H2S production and indole formation. Chemotaxonomic analysis showed that MK-6 was the major isoprenoid quinone and phosphatidylethanolamine was the major polar lipid. The major fatty acids were iso-C17 : 0 3-OH, iso-C15 : 1 G, iso-C15 : 0 and C16 : 1ω7c/iso-C15 : 0 2OH. The genomic DNA G+C content was 44.8 mol%. Comparative 16S rRNA gene sequence analysis revealed that strain Ar-22T is closely related to members of the genus
Muricauda
, sharing 94.2–97.3 % sequence similarity with the type strains of species of the genus
Muricauda
and being most closely related to the
Muricauda aquimarina
. Phylogenetic analysis based on the 16S rRNA gene sequence comparison confirmed that strain Ar-22T formed a deep lineage with
Muricauda flavescens
. Sequence similarity between strain Ar-22T and
Muricauda ruestringensis
DSM 13258T, the type species of the genus
Muricauda
, was 96.9 %. Strain Ar-22T exhibited mean DNA–DNA relatedness values of 40.1 %, 49.4 % and 25.7 % to
M. aquimarina
JCM 11811T,
M. flavescens
JCM 11812T and
Muricauda lutimaris
KCTC 22173T, respectively. On the basis of phenotypic and genotypic data, strain Ar-22T represents a novel species of the genus
Muricauda
, for which the name
Muricauda
antarctica sp. nov. (type strain Ar-22T = CGMCC 1.12174T = JCM 18450T) is proposed.
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Affiliation(s)
- Yue-Hong Wu
- Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, PR China
- Laboratory of Marine Ecosystem and Biogeochemistry, State Oceanic Administration, Hangzhou 310012, PR China
| | - Pei-Song Yu
- Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, PR China
- Laboratory of Marine Ecosystem and Biogeochemistry, State Oceanic Administration, Hangzhou 310012, PR China
| | - Ya-Dong Zhou
- Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, PR China
- Laboratory of Marine Ecosystem and Biogeochemistry, State Oceanic Administration, Hangzhou 310012, PR China
| | - Lin Xu
- Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, PR China
- Laboratory of Marine Ecosystem and Biogeochemistry, State Oceanic Administration, Hangzhou 310012, PR China
| | - Chun-Sheng Wang
- Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, PR China
- Laboratory of Marine Ecosystem and Biogeochemistry, State Oceanic Administration, Hangzhou 310012, PR China
| | - Min Wu
- College of Life Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Aharon Oren
- Institute of Life Sciences, Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Xue-Wei Xu
- Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, PR China
- Laboratory of Marine Ecosystem and Biogeochemistry, State Oceanic Administration, Hangzhou 310012, PR China
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25
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Adamkiewicz P, Sujak A, Gruszecki WI. Spectroscopic study on formation of aggregated structures by carotenoids: Role of water. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.04.053] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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26
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Plastid Signaling During the Plant Life Cycle. PLASTID DEVELOPMENT IN LEAVES DURING GROWTH AND SENESCENCE 2013. [DOI: 10.1007/978-94-007-5724-0_22] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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27
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Hadjal T, Dhuique-Mayer C, Madani K, Dornier M, Achir N. Thermal degradation kinetics of xanthophylls from blood orange in model and real food systems. Food Chem 2012; 138:2442-50. [PMID: 23497907 DOI: 10.1016/j.foodchem.2012.12.022] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2012] [Revised: 11/23/2012] [Accepted: 12/07/2012] [Indexed: 11/16/2022]
Abstract
Thermal degradation kinetics of the major blood orange xanthophylls (cis-violaxanthin, lutein, β-cryptoxanthin, zeaxanthin and cis-antheraxanthin) were investigated at 45, 60, 75, and 90°C in real juice and three model systems formulated to evaluate the impact of xanthophyll form (esterified or free) and pH (acid or neutral). Xanthophylls were monitored by HPLC-DAD and kinetic parameters were identified by non-linear regression. A second order model best fitted the degradation curves of xanthophylls. All degradation rates were the lowest in real juice. Esterified forms were more stable than were the free forms. In all acidic media, β-cryptoxanthin exhibited the lowest degradation rates followed by lutein and zeaxanthin. In comparison, the epoxy carotenoids cis-violaxanthin and cis-antheraxanthin degraded around 3-fold faster in their esterified form. In their free form, cis-antheraxanthin degraded 30-fold faster while cis-violaxanthin instantaneously disappeared because of the isomerisation of its 5,6-epoxy groups into 5,8-epoxy. By contrast, in neutral medium, free epoxy-xanthophylls were about 2-fold more stable than were the free hydroxy xanthophylls lutein, zeaxanthin and β-cryptoxanthin. Kinetic behaviours of xanthophylls were closely dependent on their chemical structures.
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Affiliation(s)
- Thiziri Hadjal
- 3bs Laboratory, A. Mira University, 06000 Bejaia, Algeria
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28
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Cervantes-Paz B, Yahia EM, Ornelas-Paz JDJ, Gardea-Béjar AA, Ibarra-Junquera V, Pérez-Martínez JD. Effect of heat processing on the profile of pigments and antioxidant capacity of green and red jalapeño peppers. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:10822-10833. [PMID: 23050605 DOI: 10.1021/jf303091u] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Raw and heat-processed jalapeño peppers (green and red) were evaluated for their pigment profile and antioxidant capacity. Sixty-seven pigments were separated and characterized by HPLC-DAD-MS, including carotenoids (isomers and esters), chlorophylls, and pheophytins. The distinctive characteristics of this pepper genotype were the presence of antheraxanthin monoesters, zeaxanthin monoesters, mutatoxanthin diesters, and a higher content of free capsanthin relative to the mono- and diesterified forms. Chlorophyll a and free all-trans-lutein were the major pigments in raw green peppers, whereas free all-trans-capsanthin was the most abundant pigment in raw red peppers. Twelve compounds were generated by the heat treatments, mainly pheophytins and cis isomers of carotenoids. Heat treatments affected differentially the concentration of individual pigments. Red peppers showed a higher antioxidant capacity than green fruits. Heating caused minor changes in the antioxidant capacity of peppers.
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Affiliation(s)
- Braulio Cervantes-Paz
- Centro de Investigación en Alimentación y Desarrollo A.C.-Unidad Cuauhtémoc, Av. Río Conchos S/N, Parque Industrial, C.P. 31570 Cd. Cuauhtémoc, Chihuahua, Mexico
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29
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Hameed A, Shahina M, Lin SY, Sridhar KR, Young LS, Lee MR, Chen WM, Chou JH, Young CC. Siansivirga zeaxanthinifaciens gen. nov., sp. nov., a novel zeaxanthin-producing member of the family Flavobacteriaceae isolated from coastal seawater of Taiwan. FEMS Microbiol Lett 2012; 333:37-45. [DOI: 10.1111/j.1574-6968.2012.02596.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2011] [Revised: 05/09/2012] [Accepted: 05/10/2012] [Indexed: 11/28/2022] Open
Affiliation(s)
- Asif Hameed
- Department of Soil & Environmental Sciences; College of Agriculture and Natural Resources; National Chung Hsing University; Taichung; Taiwan
| | - Mariyam Shahina
- Department of Soil & Environmental Sciences; College of Agriculture and Natural Resources; National Chung Hsing University; Taichung; Taiwan
| | - Shih-Yao Lin
- Department of Soil & Environmental Sciences; College of Agriculture and Natural Resources; National Chung Hsing University; Taichung; Taiwan
| | | | - Li-Sen Young
- Department of Biotechnology; College of Applied Arts and Sciences; National Formosa University; Yunlin; Taiwan
| | - Maw-Rong Lee
- Department of Chemistry; National Chung Hsing University; Taichung; Taiwan
| | - Wen-Ming Chen
- Department of Seafood Science; Laboratory of Microbiology; National Kaohsiung Marine University; Kaohsiung; Taiwan
| | - Jui-Hsing Chou
- Department of Seafood Science; Laboratory of Microbiology; National Kaohsiung Marine University; Kaohsiung; Taiwan
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30
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Li XX, Han LJ, Xiao WH. Effect of Cu 2+on the Stability of Xanthophylls in Acetone. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2012. [DOI: 10.1080/10942912.2010.491930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Light-induced isomerization of the LHCII-bound xanthophyll neoxanthin: Possible implications for photoprotection in plants. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2011; 1807:1237-43. [DOI: 10.1016/j.bbabio.2011.06.011] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2011] [Revised: 06/13/2011] [Accepted: 06/15/2011] [Indexed: 11/17/2022]
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Hameed A, Arun AB, Ho HP, Chang CMJ, Rekha PD, Lee MR, Singh S, Young CC. Supercritical carbon dioxide micronization of zeaxanthin from moderately thermophilic bacteria Muricauda lutaonensis CC-HSB-11T. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:4119-4124. [PMID: 21384920 DOI: 10.1021/jf200444q] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Moderately thermophilic bacterial strain CC-HSB-11(T) (Muricauda lutaonensis), which was described recently from a coastal hot spring of Green Island, Taiwan, has been identified to produce zeaxanthin as a predominant xanthophyll by liquid chromatography-tandem mass spectrometry (LC-MS/MS). Cell culture in bioreactor produced 3.12 ± 0.18 mg zeaxanthin L(-1) of culture. Micronization of zeaxanthin was achieved through supercritical carbon dioxide antisolvent precipitation method. Yield of zeaxanthin after the process was 53.4%. Dynamic light scattering assay determined the polydisperse existence of micronized particles of size 3 nm to 2 μm. Field emission scanning electron microscopy revealed distinct morphology and size distribution heterogeneity of particles. Integrity of zeaxanthin after the antisolvent process was assessed by LC-MS/MS. The technique capitalizes on the inherent ability of CC-HSB-11(T) to synthesize zeaxanthin and the work demonstrated feasibility of antisolvent precipitation method to produce microparticles exploiting a bacterial strain.
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Affiliation(s)
- Asif Hameed
- Department of Soil & Environmental Sciences, College of Agriculture and Natural Resources, National Chung Hsing University, Taichung, Taiwan
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Khoo HE, Prasad KN, Kong KW, Jiang Y, Ismail A. Carotenoids and their isomers: color pigments in fruits and vegetables. Molecules 2011; 16:1710-38. [PMID: 21336241 PMCID: PMC6259627 DOI: 10.3390/molecules16021710] [Citation(s) in RCA: 260] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2011] [Revised: 01/29/2011] [Accepted: 01/31/2011] [Indexed: 11/17/2022] Open
Abstract
Fruits and vegetables are colorful pigment-containing food sources. Owing to their nutritional benefits and phytochemicals, they are considered as 'functional food ingredients'. Carotenoids are some of the most vital colored phytochemicals, occurring as all-trans and cis-isomers, and accounting for the brilliant colors of a variety of fruits and vegetables. Carotenoids extensively studied in this regard include β-carotene, lycopene, lutein and zeaxanthin. Coloration of fruits and vegetables depends on their growth maturity, concentration of carotenoid isomers, and food processing methods. This article focuses more on several carotenoids and their isomers present in different fruits and vegetables along with their concentrations. Carotenoids and their geometric isomers also play an important role in protecting cells from oxidation and cellular damages.
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Affiliation(s)
- Hock-Eng Khoo
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; E-Mails: (H.-E.K); (K.N.P); (K.-W.K)
| | - K. Nagendra Prasad
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; E-Mails: (H.-E.K); (K.N.P); (K.-W.K)
| | - Kin-Weng Kong
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; E-Mails: (H.-E.K); (K.N.P); (K.-W.K)
| | - Yueming Jiang
- South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; E-Mail: (Y.J.)
| | - Amin Ismail
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; E-Mails: (H.-E.K); (K.N.P); (K.-W.K)
- Laboratory of Analysis and Authentication, Halal Products Research Institute, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
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Niedzwiedzki DM, Enriquez MM, LaFountain AM, Frank HA. Ultrafast Time-resolved Absorption Spectroscopy of Geometric Isomers of Xanthophylls. Chem Phys 2010; 373:80-89. [PMID: 20689726 PMCID: PMC2913875 DOI: 10.1016/j.chemphys.2010.01.019] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
This paper presents an ultrafast optical spectroscopic investigation of the excited state energies, lifetimes and spectra of specific geometric isomers of neoxanthin, violaxanthin, lutein, and zeaxanthin. All-trans- and 15,15'-cis-beta-carotene were also examined. The spectroscopy was done on molecules purified by HPLC frozen immediately to inhibit isomerization. The spectra were taken at 77 K to maintain the configurations and to provide better spectral resolution than seen at room temperature. The kinetics reveal that for all of the molecules except neoxanthin, the S(1) state lifetime of the cis-isomers is shorter than that of the all-trans isomers. The S(1) excited state energies of all the isomers were determined by recording S(1) --> S(2) transient absorption spectra. The results obtained in this manner at cryogenic temperatures provide an unprecedented level of precision in the measurement of the S(1) energies of these xanthophylls, which are critical components in light-harvesting pigment-protein complexes of green plants.
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Affiliation(s)
| | - Miriam M. Enriquez
- Department of Chemistry, University of Connecticut, Storrs, CT 06269-3060, USA
| | - Amy M. LaFountain
- Department of Chemistry, University of Connecticut, Storrs, CT 06269-3060, USA
| | - Harry A. Frank
- Department of Chemistry, University of Connecticut, Storrs, CT 06269-3060, USA
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Gruszecki WI, Zubik M, Luchowski R, Janik E, Grudzinski W, Gospodarek M, Goc J, Fiedor L, Gryczynski Z, Gryczynski I. Photoprotective role of the xanthophyll cycle studied by means of modeling of xanthophyll–LHCII interactions. Chem Phys 2010. [DOI: 10.1016/j.chemphys.2010.03.025] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Wenzel M, Seuss-Baum I, Schlich E. Influence of pasteurization, spray- and freeze-drying, and storage on the carotenoid content in egg yolk. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:1726-1731. [PMID: 20070090 DOI: 10.1021/jf903488b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A liquid chromatography-atmospheric pressure chemical ionization mass spectrometry [LC-(APCI)MS] method was developed to identify and quantify the carotenoids present in fresh, pasteurized, and freeze- and spray-dried egg yolk in two independent batches. The egg yolk powders in each batch were stored in the dark for 6 months at -18 or 20 degrees C. Carotenoids were isolated by solvent extraction without saponification and analyzed by HPLC using a C(30) column coupled to a photodiode array and mass detector. The most abundant carotenoids were all-E-canthaxanthin, all-E-lutein, all-E-zeaxanthin, 9-Z-canthaxanthin, and beta-apo-8'-carotenoic acid ethyl ester. Pasteurization of the egg yolk caused no critical changes in the carotenoid content. On the contrary, drying to a dry matter of 98-99% led to higher carotenoid contents, induced by a denaturation of binding proteins, and a destabilization of the cell matrix. After the 6 months of storage, the contents of all main carotenoids in the egg yolk powder were significantly lower. The synthetic carotenoids canthaxanthin and beta-apo-8'-carotenoic acid ethyl ester showed a higher retention rate, and the greatest losses occurred within the first 8 weeks. Statistical tests (ANOVA, P < 0.05) also proved that after 26 weeks, the egg yolk powders stored at -18 degrees C showed only a slightly higher retention of carotenoids when compared to the powders stored at 20 degrees C.
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Affiliation(s)
- Michael Wenzel
- Department of Food Technology, University of Applied Sciences Fulda, Marquardstrasse 35, 36039 Fulda, Germany.
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Gruszecki WI, Luchowski R, Zubik M, Grudzinski W, Janik E, Gospodarek M, Goc J, Gryczynski Z, Gryczynski I. Blue-light-controlled photoprotection in plants at the level of the photosynthetic antenna complex LHCII. JOURNAL OF PLANT PHYSIOLOGY 2010; 167:69-73. [PMID: 19699007 DOI: 10.1016/j.jplph.2009.07.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2009] [Revised: 07/11/2009] [Accepted: 07/13/2009] [Indexed: 05/28/2023]
Abstract
Plants have developed several adaptive regulatory mechanisms, operating at all the organization levels, to optimize utilization of light energy and to protect themselves against over-excitation-related damage. We report activity of a previously unknown possible regulatory mechanism that operates at the molecular level of the major photosynthetic pigment-protein complexes of plants, LHCII. This mechanism is driven exclusively by blue light, operates in the trimeric but not in the monomeric complex, and results in singlet excitation quenching leading to thermal energy dissipation. The conclusions are based on single molecule fluorescence lifetime analysis, direct measurements of thermal energy dissipation by photo-thermal spectroscopy, and on fluorescence spectroscopy. Possible molecular mechanisms involved in the blue-light-induced photoprotective effect are discussed, including xanthophyll photo-isomerization and the thermo-optic effect.
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Affiliation(s)
- Wieslaw I Gruszecki
- Department of Biophysics, Institute of Physics, Maria Curie-Sklodowska University, 20 031 Lublin, Poland.
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Kupisz K, Sujak A, Patyra M, Trebacz K, Gruszecki WI. Can membrane-bound carotenoid pigment zeaxanthin carry out a transmembrane proton transfer? BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2008; 1778:2334-40. [DOI: 10.1016/j.bbamem.2008.06.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2008] [Revised: 06/02/2008] [Accepted: 06/04/2008] [Indexed: 11/26/2022]
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39
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40
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Li XX, Han LJ. Iron(II)-induced isomerization of (all-E)-xanthophyll pigments lutein, zeaxanthin, and β cryptoxanthin in acetone. Eur Food Res Technol 2008. [DOI: 10.1007/s00217-008-0878-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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41
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Gruszecki WI, Grudzinski W, Gospodarek M, Patyra M, Maksymiec W. Xanthophyll-induced aggregation of LHCII as a switch between light-harvesting and energy dissipation systems. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2006; 1757:1504-11. [PMID: 16978579 DOI: 10.1016/j.bbabio.2006.08.002] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2006] [Revised: 08/06/2006] [Accepted: 08/08/2006] [Indexed: 11/23/2022]
Abstract
The xanthophyll cycle pigments, violaxanthin and zeaxanthin, present outside the light-harvesting pigment-protein complexes of Photosystem II (LHCII) considerably enhance specific aggregation of proteins as revealed by analysis of the 77 K chlorophyll a fluorescence emission spectra. Analysis of the infrared absorption spectra in the Amide I region shows that the aggregation is associated with formation of intermolecular hydrogen bonding between the alpha helices of neighboring complexes. The aggregation gives rise to new electronic energy levels, in the Soret region (530 nm) and corresponding to the Q spectral region (691 nm), as revealed by analysis of the resonance light scattering spectra. New electronic energy levels are interpreted in terms of exciton coupling of protein-bound photosynthetic pigments. The energy of the Q excitonic level of chlorophyll is not high enough to drive the light reactions of Photosystem II but better suited to transfer excitation energy to Photosystem I, which creates favourable energetic conditions for the state I-state II transition. The lack of fluorescence emission from this energy level, at physiological temperatures, is indicative of either very high thermal energy conversion rate or efficient excitation quenching by carotenoids. Chlorophyll a fluorescence was quenched up to 61% and 34% in the zeaxanthin- and violaxanthin-containing samples, respectively, as compared to pure LHCII. Enhanced aggregation of LHCII, observed in the presence of the xanthophyll cycle pigments, is discussed in terms of the switch between light-harvesting and energy dissipation systems.
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Affiliation(s)
- Wieslaw I Gruszecki
- Department of Biophysics, Institute of Physics, Maria Curie-Sklodowska University, 20-601 Lublin, Poland.
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Talbott LD, Hammad JW, Harn LC, Nguyen VH, Patel J, Zeiger E. Reversal by Green Light of Blue Light-stimulated Stomatal Opening in Intact, Attached Leaves of Arabidopsis Operates Only in the Potassium-dependent, Morning Phase of Movement. ACTA ACUST UNITED AC 2006; 47:332-9. [PMID: 16418232 DOI: 10.1093/pcp/pci249] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Green light reversal of blue light-stimulated stomatal opening was discovered in isolated stomata. The present study shows that the response also occurs in stomata from intact leaves. Arabidopsis thaliana plants were grown in a growth chamber under blue, red and green light. Removal of the green light opened the stomata and restoration of green light closed them to baseline values under experimental conditions that rule out a mesophyll-mediated effect. Assessment of the response to green light over a daily time course showed that the stomatal sensitivity to green light was observed only in the morning, which coincided with the use of potassium as a guard cell osmoticum. Sensitivity to green light was absent during the afternoon phase of stomatal movement, which was previously shown to be dominated by sucrose osmoregulation in Vicia faba. Hence, the shift away from potassium-based osmoregulation in guard cells is further postulated to entail a shift from blue light to photosynthesis as the primary component of the stomatal response to light. Stomata from intact leaves of the zeaxanthin-less, npq1 mutant of Arabidopsis failed to respond to the removal or restoration of green light in the growth chamber, or to short, high fluence pulses of blue or green light. These data confirm previous studies showing that npq1 stomata are devoid of a specific blue light response. In contrast, stomata from intact leaves of phot1 phot2 double mutant plants had a reduced but readily detectable response to the removal of green light and to blue and green pulses.
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Affiliation(s)
- Lawrence D Talbott
- Department of Ecology and Evolutionary Biology, University of California, Los Angeles, 90024, USA
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