OXIDATIVE STRESS in ALGAE: METHOD DEVELOPMENT and EFFECTS of TEMPERATURE on ANTIOXIDANT NUCLEAR SIGNALING COMPOUNDS Md Noman Siddiqui Purdue University
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Regulation of Photosynthesis by a Potassium Transporter in the Diatom Phaeodactylum Tricornutum Claire Seydoux
Regulation of photosynthesis by a potassium transporter in the diatom Phaeodactylum tricornutum Claire Seydoux To cite this version: Claire Seydoux. Regulation of photosynthesis by a potassium transporter in the diatom Phaeo- dactylum tricornutum. Vegetal Biology. Université Grenoble Alpes [2020-..], 2020. English. NNT : 2020GRALV031. tel-03172222 HAL Id: tel-03172222 https://tel.archives-ouvertes.fr/tel-03172222 Submitted on 17 Mar 2021 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. THÈSE Pour obtenir le grade de DOCTEUR DE L’UNIVERSITÉ GRENOBLE ALPES Spécialité : Biologie Végétale Arrêté ministériel : 25 mai 2016 Présentée par Claire SEYDOUX Thèse dirigée par Florence COURTOIS, Maitre de conferences, Université Grenoble Alpes et codirigée par Giovanni FINAZZI, Université Grenoble Alpes préparée au sein du Laboratoire Laboratoire de Physiologie Cellulaire Végétale dans l'École Doctorale Chimie et Sciences du Vivant Régulation de la photosynthèse par un transporteur de potassium chez la diatomée Phaeodactylum tricornutum Regulation of photosynthesis -
IRISH WAR CRY Chestnut Horse, 2014; 16.2 Hands CONNECT: 6 Wins, $1,370,000 in 8 Starts, Cigar Mile H-G1, Pennsylvania Mr
IRISH WAR CRY Chestnut Horse, 2014; 16.2 Hands CONNECT: 6 wins, $1,370,000 in 8 starts, Cigar Mile H-G1, Pennsylvania Mr. Prospector Raise a Native Derby-G2, Westchester S-G3, Curlin S. Gold Digger Smart Strike GLOBAL CAMPAIGN: 6 wins, $1,321,080 to 4, 2020, Woodward H-G1, Mon- Classy ’n Smart Smarten mouth Cup S-G3, Peter Pan S-G3, 3rd Breeders’ Cup Classic-G1, etc. Curlin No Class OFF THE TRACKS: 4 wins, $570,594, Mother Goose S-G1, Schuylerville S-G3, etc. Chestnut, 2004 Vice Regent PARIS LIGHTS: 3 wins, $287,912 in 4 starts at 3, 2020, Coaching Club American Deputy Minister Mint Copy Sherriff’s Deputy Oaks-G1. Barbarika Bates Motel War Exchange TENFOLD: 4 wins, $1,137,835 to 5, 2020, Jim Dandy S-G2, Pimlico Special S-G3, 3rd Preakness S-G1, Hollywood Gold Cup S-G1, etc. Danzig Northern Dancer Pas de Nom LADY APPLE: 6 wins, $1,038,484 to 4, 2020, Fantasy S-G3, Iowa Oaks-G3, etc. Polish Numbers TERRA PROMESSA: 7 wins, $920,350, Fantasy S-G3, Honeybee S-G3, etc. Numbered Account Buckpasser Irish Sovereign Intriguing MYLADY CURLIN: 8 wins, $805,883 to 5, 2020, Falls City H-G2, etc. Chestnut, 2000 Bold Ruckus POINT OF HONOR: 3 wins, $684,040 to 4, 2020, Black-Eyed Susan S-G2, Sun- Beau Genius Royal Colleen Irish Genius coast S, 2nd Alabama S-G1, Coaching Club American Oaks-G1, etc. Irish Trip (GB) Saint Crespin III *Tabebuia II FEMALE LINE Dosage Profile: 5 7 12 0 0 IRISH SOVEREIGN. -
Diverse Biosynthetic Pathways and Protective Functions Against Environmental Stress of Antioxidants in Microalgae
plants Review Diverse Biosynthetic Pathways and Protective Functions against Environmental Stress of Antioxidants in Microalgae Shun Tamaki 1,* , Keiichi Mochida 1,2,3,4 and Kengo Suzuki 1,5 1 Microalgae Production Control Technology Laboratory, RIKEN Baton Zone Program, Yokohama 230-0045, Japan; [email protected] (K.M.); [email protected] (K.S.) 2 RIKEN Center for Sustainable Resource Science, Yokohama 230-0045, Japan 3 Kihara Institute for Biological Research, Yokohama City University, Yokohama 230-0045, Japan 4 School of Information and Data Sciences, Nagasaki University, Nagasaki 852-8521, Japan 5 euglena Co., Ltd., Tokyo 108-0014, Japan * Correspondence: [email protected]; Tel.: +81-45-503-9576 Abstract: Eukaryotic microalgae have been classified into several biological divisions and have evo- lutionarily acquired diverse morphologies, metabolisms, and life cycles. They are naturally exposed to environmental stresses that cause oxidative damage due to reactive oxygen species accumulation. To cope with environmental stresses, microalgae contain various antioxidants, including carotenoids, ascorbate (AsA), and glutathione (GSH). Carotenoids are hydrophobic pigments required for light harvesting, photoprotection, and phototaxis. AsA constitutes the AsA-GSH cycle together with GSH and is responsible for photooxidative stress defense. GSH contributes not only to ROS scavenging, but also to heavy metal detoxification and thiol-based redox regulation. The evolutionary diversity of microalgae influences the composition and biosynthetic pathways of these antioxidants. For example, α-carotene and its derivatives are specific to Chlorophyta, whereas diadinoxanthin and fucoxanthin are found in Heterokontophyta, Haptophyta, and Dinophyta. It has been suggested that Citation: Tamaki, S.; Mochida, K.; Suzuki, K. Diverse Biosynthetic AsA is biosynthesized via the plant pathway in Chlorophyta and Rhodophyta and via the Euglena Pathways and Protective Functions pathway in Euglenophyta, Heterokontophyta, and Haptophyta. -
Psidium" Redirects Here
Guava 1 Guava This article is about the fruit. For other uses, see Guava (disambiguation). "Psidium" redirects here. For the thoroughbred racehorse, see Psidium (horse). Guava Apple Guava (Psidium guajava) Scientific classification Kingdom: Plantae (unranked): Angiosperms (unranked): Eudicots (unranked): Rosids Order: Myrtales Family: Myrtaceae Subfamily: Myrtoideae Tribe: Myrteae Genus: Psidium L. Species About 100, see text Synonyms • Calyptropsidium O.Berg • Corynemyrtus (Kiaersk.) Mattos • Cuiavus Trew • Episyzygium Suess. & A.Ludw. • Guajava Mill. • Guayaba Noronha • Mitropsidium Burret Guavas (singular guava, /ˈɡwɑː.və/) are plants in the Myrtle family (Myrtaceae) genus Psidium, which contains about 100 species of tropical shrubs and small trees. They are native to Mexico, Central America, and northern South America. Guavas are now cultivated and naturalized throughout the tropics and subtropics in Africa, South Asia, Southeast Asia, the Caribbean, subtropical regions of North America, Hawaii, New Zealand, Australia and Spain. Guava 2 Types The most frequently eaten species, and the one often simply referred to as "the guava", is the Apple Guava (Psidium guajava).Wikipedia:Citation needed. Guavas are typical Myrtoideae, with tough dark leaves that are opposite, simple, elliptic to ovate and 5–15 centimetres (2.0–5.9 in) long. The flowers are white, with five petals and numerous stamens. The genera Accara and Feijoa (= Acca, Pineapple Guava) were formerly included in Psidium.Wikipedia:Citation needed Apple Guava (Psidium guajava) flower Common names The term "guava" appears to derive from Arawak guayabo "guava tree", via the Spanish guayaba. It has been adapted in many European and Asian languages, having a similar form. Another term for guavas is pera, derived from pear. -
(12) United States Patent (10) Patent No.: US 8,834.855 B2 Johnsen Et Al
USOO8834.855B2 (12) United States Patent (10) Patent No.: US 8,834.855 B2 Johnsen et al. (45) Date of Patent: Sep. 16, 2014 (54) SUNSCREEN COMPOSITIONS COMPRISING (56) References Cited CAROTENOIDS U.S. PATENT DOCUMENTS (75) Inventors: Geir Johnsen, Trondheim (NO); Per Age Lysaa, Oslo (NO); KristinO O Aamodt, 4,699,7815,210,186 A 10/19875/1993 MikalsenGoupil et al. Oslo (NO) 5,308,759 A 5/1994 Gierhart 5,352,793 A 10, 1994 Bird et al. (73) Assignee: Promar AS (NO) 5,382,714 A 1/1995 Khachik 5,648,564 A 7/1997 AuSich et al. (*) Notice: Subject to any disclaimer, the term of this 5,654,488 A 8/1997 Krause et al. patent is extended or adjusted under 35 5,705,146 A 1, 1998 Lindquist U.S.C. 154(b) by 1255 days. (Continued) (21) Appl. No.: 11/795,668 FOREIGN PATENT DOCUMENTS (22) PCT Filed:1-1. Jan. 23, 2006 CA 21777521310969 12/199612/1992 (86). PCT No.: PCT/GB2OO6/OOO220 (Continued) S371 (c)(1), OTHER PUBLICATIONS (2), (4) Date: Apr. 15, 2008 “A UV absorbing compound in HPLC pigment chromatograms (87) PCT Pub. No.: WO2006/077433 obtained from Iceland Basin Phytoplankton'. Liewellyn et al., PCT Pub. Date: Jul.e 27,af f 9 2006 Marine Ecology Progress Series, vol. 158.:283-287, 1997.* (65) Prior Publication Data (Continued)Continued US 2008/O260662 A1 Oct. 23, 2008 Primary Examiner — Ernst V Arnold (30) Foreign Application Priority Data Assistant Examiner — Hong Yu (74) Attorney, Agent, or Firm — Schwegman Lundberg & Jan. 21, 2005 (GB) .................................. -
Altered Xanthophyll Compositions Adversely Affect Chlorophyll Accumulation and Nonphotochemical Quenching in Arabidopsis Mutants
Proc. Natl. Acad. Sci. USA Vol. 95, pp. 13324–13329, October 1998 Plant Biology Altered xanthophyll compositions adversely affect chlorophyll accumulation and nonphotochemical quenching in Arabidopsis mutants BARRY J. POGSON*, KRISHNA K. NIYOGI†,OLLE BJO¨RKMAN‡, AND DEAN DELLAPENNA§¶ *Department of Plant Biology, Arizona State University, Tempe, AZ 85287-1601; †Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720-3102; ‡Department of Plant Biology, Carnegie Institution of Washington, Stanford, CA 94305-4101; and §Department of Biochemistry, University of Nevada, Reno, NV 89557-0014 Contributed by Olle Bjo¨rkman, September 4, 1998 ABSTRACT Collectively, the xanthophyll class of carote- thin, are enriched in the LHCs, where they contribute to noids perform a variety of critical roles in light harvesting assembly, light harvesting, and photoprotection (2–8). antenna assembly and function. The xanthophyll composition A summary of the carotenoid biosynthetic pathway of higher of higher plant photosystems (lutein, violaxanthin, and neox- plants and relevant chemical structures is shown in Fig. 1. anthin) is remarkably conserved, suggesting important func- Lycopene is cyclized twice by the enzyme lycopene b-cyclase tional roles for each. We have taken a molecular genetic to form b-carotene. The two beta rings of b-carotene are approach in Arabidopsis toward defining the respective roles of subjected to identical hydroxylation reactions to yield zeaxan- individual xanthophylls in vivo by using a series of mutant thin, which in turn is epoxidated once to form antheraxanthin lines that selectively eliminate and substitute a range of and twice to form violaxanthin. Neoxanthin is derived from xanthophylls. The mutations, lut1 and lut2 (lut 5 lutein violaxanthin by an additional rearrangement (9). -
Identification of Distinct Ph- and Zeaxanthin-Dependent Quenching
RESEARCH ARTICLE Identification of distinct pH- and zeaxanthin-dependent quenching in LHCSR3 from Chlamydomonas reinhardtii Julianne M Troiano1†, Federico Perozeni2†, Raymundo Moya1, Luca Zuliani2, Kwangyrul Baek3, EonSeon Jin3, Stefano Cazzaniga2, Matteo Ballottari2*, Gabriela S Schlau-Cohen1* 1Department of Chemistry, Massachusetts Institute of Technology, Cambridge, United States; 2Department of Biotechnology, University of Verona, Verona, Italy; 3Department of Life Science, Hanyang University, Seoul, Republic of Korea Abstract Under high light, oxygenic photosynthetic organisms avoid photodamage by thermally dissipating absorbed energy, which is called nonphotochemical quenching. In green algae, a chlorophyll and carotenoid-binding protein, light-harvesting complex stress-related (LHCSR3), detects excess energy via a pH drop and serves as a quenching site. Using a combined in vivo and in vitro approach, we investigated quenching within LHCSR3 from Chlamydomonas reinhardtii. In vitro two distinct quenching processes, individually controlled by pH and zeaxanthin, were identified within LHCSR3. The pH-dependent quenching was removed within a mutant LHCSR3 that lacks the residues that are protonated to sense the pH drop. Observation of quenching in zeaxanthin-enriched LHCSR3 even at neutral pH demonstrated zeaxanthin-dependent quenching, which also occurs in other light-harvesting complexes. Either pH- or zeaxanthin-dependent quenching prevented the formation of damaging reactive oxygen species, and thus the two *For correspondence: quenching processes may together provide different induction and recovery kinetics for [email protected] (MB); photoprotection in a changing environment. [email protected] (GSS-C) †These authors contributed equally to this work Competing interests: The Introduction authors declare that no Sunlight is the essential source of energy for most photosynthetic organisms, yet sunlight in excess competing interests exist. -
Identification of 1 Distinct Ph- and Zeaxanthin-Dependent Quenching in LHCSR3 from Chlamydomonas Reinhardtii
Identification of 1 distinct pH- and zeaxanthin-dependent quenching in LHCSR3 from chlamydomonas reinhardtii The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Citation Troiano, Julianne M. et al. “Identification of 1 distinct pH- and zeaxanthin-dependent quenching in LHCSR3 from chlamydomonas reinhardtii.” eLife, 10 (January 2021): e60383 © 2021 The Author(s) As Published 10.7554/eLife.60383 Publisher eLife Sciences Publications, Ltd Version Final published version Citable link https://hdl.handle.net/1721.1/130449 Terms of Use Creative Commons Attribution 4.0 International license Detailed Terms https://creativecommons.org/licenses/by/4.0/ RESEARCH ARTICLE Identification of distinct pH- and zeaxanthin-dependent quenching in LHCSR3 from Chlamydomonas reinhardtii Julianne M Troiano1†, Federico Perozeni2†, Raymundo Moya1, Luca Zuliani2, Kwangyrul Baek3, EonSeon Jin3, Stefano Cazzaniga2, Matteo Ballottari2*, Gabriela S Schlau-Cohen1* 1Department of Chemistry, Massachusetts Institute of Technology, Cambridge, United States; 2Department of Biotechnology, University of Verona, Verona, Italy; 3Department of Life Science, Hanyang University, Seoul, Republic of Korea Abstract Under high light, oxygenic photosynthetic organisms avoid photodamage by thermally dissipating absorbed energy, which is called nonphotochemical quenching. In green algae, a chlorophyll and carotenoid-binding protein, light-harvesting complex stress-related (LHCSR3), detects excess energy via a pH drop and serves as a quenching site. Using a combined in vivo and in vitro approach, we investigated quenching within LHCSR3 from Chlamydomonas reinhardtii. In vitro two distinct quenching processes, individually controlled by pH and zeaxanthin, were identified within LHCSR3. The pH-dependent quenching was removed within a mutant LHCSR3 that lacks the residues that are protonated to sense the pH drop. -
Abscisic Acid Induced Protection Against Photoinhibition of PSII Correlates with Enhanced Activity of the Xanthophyll Cycle
FEBS 15944 FEBS Letters 371 (1995) 61-64 Abscisic acid induced protection against photoinhibition of PSII correlates with enhanced activity of the xanthophyll cycle A.G. Ivanov a'*, M. Krol b, D. Maxwell b, N.P.A. Huner b alnstitute of Biophysics, Bulgarian Academy of Sciences, Aead. (7. Bonchev Street, bl. 21, 1113 Sofia, Bulgaria bDepartment of Plant Sciences, University of Western Ontario, London, Ont. N6A 5B7, Canada Received 22 June 1995; revised version received 24 July 1995 applied ABA on the light-dependent zeaxanthin formation, the Abstract The exogenous application of abscisic acid (ABA) to related capacity for non-photochemical chlorophyll fluores- barley seedlings resulted in partial protection of the PSII photo- cence quenching and the possible involvement of ABA in the chemistry against photoinhibition at low temperature, the effect protection of PSII photochemistry from excessive radiation at being most pronounced at 10 -s M ABA. This was accompanied low temperatures. by higher photochemical quenching (qP) in ABA-treated leaves. A considerable increase (122%) in the amount of total carotenoids 2. Materials and methods and xanthophylls (antheraxanthin, violaxanthin and zeaxanthin) was also found in the seedlings subjected to ABA. The activity Seeds of barley (Hordeum vulgare L. var. cadette) were germinated of the xanthophyll cycle measured by the epoxidation state of for 3 days and grown in aqueous solutions of ABA (10 -5 M and 10-6 M) xanthophyUs under high-light treatment was higher in ABA- as in [23]. ABA treatments lasted 7 days. The solutions were changed treated plants compared with the control. This corresponds to a daily. -
Photosynthetic Pigments in Diatoms
Mar. Drugs 2015, 13, 5847-5881; doi:10.3390/md13095847 OPEN ACCESS marine drugs ISSN 1660-3397 www.mdpi.com/journal/marinedrugs Review Photosynthetic Pigments in Diatoms Paulina Kuczynska 1, Malgorzata Jemiola-Rzeminska 1,2 and Kazimierz Strzalka 1,2,* 1 Faculty of Biochemistry, Biophysics and Biotechnology, Department of Plant Physiology and Biochemistry, Jagiellonian University, Gronostajowa 7, Krakow 30-387, Poland; E-Mails: [email protected] (P.K.); [email protected] (M.J.-R.) 2 Małopolska Centre of Biotechnology, Gronostajowa 7A, Krakow 30-387, Poland * Author to whom correspondence should be addressed; E-Mail: [email protected]; Tel.: +48-126-646-509; Fax: +48-126-646-902. Academic Editor: Véronique Martin-Jézéquel Received: 10 July 2015 / Accepted: 7 September 2015 / Published: 16 September 2015 Abstract: Photosynthetic pigments are bioactive compounds of great importance for the food, cosmetic, and pharmaceutical industries. They are not only responsible for capturing solar energy to carry out photosynthesis, but also play a role in photoprotective processes and display antioxidant activity, all of which contribute to effective biomass and oxygen production. Diatoms are organisms of a distinct pigment composition, substantially different from that present in plants. Apart from light-harvesting pigments such as chlorophyll a, chlorophyll c, and fucoxanthin, there is a group of photoprotective carotenoids which includes β-carotene and the xanthophylls, diatoxanthin, diadinoxanthin, violaxanthin, antheraxanthin, and zeaxanthin, which are engaged in the xanthophyll cycle. Additionally, some intermediate products of biosynthetic pathways have been identified in diatoms as well as unusual pigments, e.g., marennine. Marine algae have become widely recognized as a source of unique bioactive compounds for potential industrial, pharmaceutical, and medical applications. -
The Biochromes ) 1.2
FORSCHUNG 45 CHIMIA 49 (1995) Nr. 3 (Miirz) Chim;a 49 (1995) 45-68 quire specific molecules, pigments or dyes © Neue Schweizerische Chemische Gesellschaft (biochromes) or systems containing them, /SSN 0009-4293 to absorb the light energy. Photoprocesses and colors are essential for life on earth, and without these biochromes and the photophysical and photochemical interac- tions, life as we know it would not have The Function of Natural been possible [1][2]. a Colorants: The Biochromes ) 1.2. Notation The terms colorants, dyes, and pig- ments ought to be used in the following way [3]: Colorants are either dyes or pig- Hans-Dieter Martin* ments, the latter being practically insolu- ble in the media in which they are applied. Indiscriminate use of these terms is fre- Abstract. The colors of nature belong undoubtedly to the beautiful part of our quently to be found in literature, but in environment. Colors always fascinated humans and left them wonderstruck. But the many biological systems it is not possible trivial question as to the practical application of natural colorants led soon and at all to make this differentiation. The consequently to coloring and dyeing of objects and humans. Aesthetical, ritual and coloring compounds of organisms have similar aspects prevailed. This function of dyes and pigments is widespread in natl)re. been referred to as biochromes, and this The importance of such visual-effective dyes is obvious: they support communication seems to be a suitable expression for a between organisms with the aid of conspicuous optical signals and they conceal biological colorant, since it circumvents revealing ones, wl,1eninconspicuosness can mean survival. -
Genetic Modification of Tomato with the Tobacco Lycopene Β-Cyclase Gene Produces High Β-Carotene and Lycopene Fruit
Z. Naturforsch. 2016; 71(9-10)c: 295–301 Louise Ralley, Wolfgang Schucha, Paul D. Fraser and Peter M. Bramley* Genetic modification of tomato with the tobacco lycopene β-cyclase gene produces high β-carotene and lycopene fruit DOI 10.1515/znc-2016-0102 and alleviation of vitamin A deficiency by β-carotene, Received May 18, 2016; revised July 4, 2016; accepted July 6, 2016 which is pro-vitamin A [4]. Deficiency of vitamin A causes xerophthalmia, blindness and premature death, espe- Abstract: Transgenic Solanum lycopersicum plants cially in children aged 1–4 [5]. Since humans cannot expressing an additional copy of the lycopene β-cyclase synthesise carotenoids de novo, these health-promoting gene (LCYB) from Nicotiana tabacum, under the control compounds must be taken in sufficient quantities in the of the Arabidopsis polyubiquitin promoter (UBQ3), have diet. Consequently, increasing their levels in fruit and been generated. Expression of LCYB was increased some vegetables is beneficial to health. Tomato products are 10-fold in ripening fruit compared to vegetative tissues. the most common source of dietary lycopene. Although The ripe fruit showed an orange pigmentation, due to ripe tomato fruit contains β-carotene, the amount is rela- increased levels (up to 5-fold) of β-carotene, with negli- tively low [1]. Therefore, approaches to elevate β-carotene gible changes to other carotenoids, including lycopene. levels, with no reduction in lycopene, are a goal of Phenotypic changes in carotenoids were found in vegeta- plant breeders. One strategy that has been employed to tive tissues, but levels of biosynthetically related isopre- increase levels of health promoting carotenoids in fruits noids such as tocopherols, ubiquinone and plastoquinone and vegetables for human and animal consumption is were barely altered.