Bipolar Dispersal of Red-Snow Algae
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Variation in Snow Algae Blooms in the Coast Range of British Columbia
ORIGINAL RESEARCH published: 15 April 2020 doi: 10.3389/fmicb.2020.00569 Variation in Snow Algae Blooms in the Coast Range of British Columbia Casey B. Engstrom, Kurt M. Yakimovich and Lynne M. Quarmby* Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC, Canada Snow algae blooms cover vast areas of summer snowfields worldwide, reducing albedo and increasing snow melt. Despite their global prevalence, little is known about the algae species that comprise these blooms. We used 18S and rbcL metabarcoding and light microscopy to characterize algae species composition in 31 snow algae blooms in the Coast Range of British Columbia, Canada. This study is the first to thoroughly document regional variation between blooms. We found all blooms were dominated by the genera Sanguina, Chloromonas, and Chlainomonas. There was considerable variation between blooms, most notably species assemblages above treeline were distinct from forested sites. In contrast to previous studies, the snow algae genus Chlainomonas was abundant and widespread in snow algae blooms. We found few taxa using traditional 18S metabarcoding, but the high taxonomic resolution of rbcL revealed Edited by: substantial diversity, including OTUs that likely represent unnamed species of snow algae. David Anthony Pearce, These three cross-referenced datasets (rbcL, 18S, and microscopy) reveal that alpine Northumbria University, United Kingdom snow algae blooms are more diverse than previously thought, with different species of Reviewed by: algae dominating different elevations. Stefanie Lutz, Keywords: snow, algae, microbiome, amplicon, rbcL, 18S, alpine, metabarcoding Agroscope, Switzerland Hanzhi Lin, University of Maryland Center for Environmental Science (UMCES), 1. INTRODUCTION United States *Correspondence: Each summer, vast areas of snow surface are colored red by snow algae blooms in polar and Lynne M. -
Altitudinal Zonation of Green Algae Biodiversity in the French Alps
Altitudinal Zonation of Green Algae Biodiversity in the French Alps Adeline Stewart, Delphine Rioux, Fréderic Boyer, Ludovic Gielly, François Pompanon, Amélie Saillard, Wilfried Thuiller, Jean-Gabriel Valay, Eric Marechal, Eric Coissac To cite this version: Adeline Stewart, Delphine Rioux, Fréderic Boyer, Ludovic Gielly, François Pompanon, et al.. Altitu- dinal Zonation of Green Algae Biodiversity in the French Alps. Frontiers in Plant Science, Frontiers, 2021, 12, pp.679428. 10.3389/fpls.2021.679428. hal-03258608 HAL Id: hal-03258608 https://hal.archives-ouvertes.fr/hal-03258608 Submitted on 11 Jun 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. fpls-12-679428 June 4, 2021 Time: 14:28 # 1 ORIGINAL RESEARCH published: 07 June 2021 doi: 10.3389/fpls.2021.679428 Altitudinal Zonation of Green Algae Biodiversity in the French Alps Adeline Stewart1,2,3, Delphine Rioux3, Fréderic Boyer3, Ludovic Gielly3, François Pompanon3, Amélie Saillard3, Wilfried Thuiller3, Jean-Gabriel Valay2, Eric Maréchal1* and Eric Coissac3* on behalf of The ORCHAMP Consortium 1 Laboratoire de Physiologie Cellulaire et Végétale, CEA, CNRS, INRAE, IRIG, Université Grenoble Alpes, Grenoble, France, 2 Jardin du Lautaret, CNRS, Université Grenoble Alpes, Grenoble, France, 3 Université Grenoble Alpes, Université Savoie Mont Blanc, CNRS, LECA, Grenoble, France Mountain environments are marked by an altitudinal zonation of habitat types. -
Lateral Gene Transfer of Anion-Conducting Channelrhodopsins Between Green Algae and Giant Viruses
bioRxiv preprint doi: https://doi.org/10.1101/2020.04.15.042127; this version posted April 23, 2020. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. 1 5 Lateral gene transfer of anion-conducting channelrhodopsins between green algae and giant viruses Andrey Rozenberg 1,5, Johannes Oppermann 2,5, Jonas Wietek 2,3, Rodrigo Gaston Fernandez Lahore 2, Ruth-Anne Sandaa 4, Gunnar Bratbak 4, Peter Hegemann 2,6, and Oded 10 Béjà 1,6 1Faculty of Biology, Technion - Israel Institute of Technology, Haifa 32000, Israel. 2Institute for Biology, Experimental Biophysics, Humboldt-Universität zu Berlin, Invalidenstraße 42, Berlin 10115, Germany. 3Present address: Department of Neurobiology, Weizmann 15 Institute of Science, Rehovot 7610001, Israel. 4Department of Biological Sciences, University of Bergen, N-5020 Bergen, Norway. 5These authors contributed equally: Andrey Rozenberg, Johannes Oppermann. 6These authors jointly supervised this work: Peter Hegemann, Oded Béjà. e-mail: [email protected] ; [email protected] 20 ABSTRACT Channelrhodopsins (ChRs) are algal light-gated ion channels widely used as optogenetic tools for manipulating neuronal activity 1,2. Four ChR families are currently known. Green algal 3–5 and cryptophyte 6 cation-conducting ChRs (CCRs), cryptophyte anion-conducting ChRs (ACRs) 7, and the MerMAID ChRs 8. Here we 25 report the discovery of a new family of phylogenetically distinct ChRs encoded by marine giant viruses and acquired from their unicellular green algal prasinophyte hosts. -
A Taxonomic Reassessment of Chlamydomonas Meslinii (Volvocales, Chlorophyceae) with a Description of Paludistella Gen.Nov
Phytotaxa 432 (1): 065–080 ISSN 1179-3155 (print edition) https://www.mapress.com/j/pt/ PHYTOTAXA Copyright © 2020 Magnolia Press Article ISSN 1179-3163 (online edition) https://doi.org/10.11646/phytotaxa.432.1.6 A taxonomic reassessment of Chlamydomonas meslinii (Volvocales, Chlorophyceae) with a description of Paludistella gen.nov. HANI SUSANTI1,6, MASAKI YOSHIDA2, TAKESHI NAKAYAMA2, TAKASHI NAKADA3,4 & MAKOTO M. WATANABE5 1Life Science Innovation, School of Integrative and Global Major, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan. 2Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8577, Japan. 3Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, 997-0052, Japan. 4Systems Biology Program, Graduate School of Media and Governance, Keio University, Fujisawa, Kanagawa, 252-8520, Japan. 5Algae Biomass Energy System Development and Research Center, University of Tsukuba. 6Research Center for Biotechnology, Indonesian Institute of Sciences, Jl. Raya Bogor KM 46 Cibinong West Java, Indonesia. Corresponding author: [email protected] Abstract Chlamydomonas (Volvocales, Chlorophyceae) is a large polyphyletic genus that includes numerous species that should be classified into independent genera. The present study aimed to examine the authentic strain of Chlamydomonas meslinii and related strains based on morphological and molecular data. All the strains possessed an asteroid chloroplast with a central pyrenoid and hemispherical papilla; however, they were different based on cell and stigmata shapes. Molecular phylogenetic analyses based on 18S rDNA, atpB, and psaB indicated that the strains represented a distinct subclade in the clade Chloromonadinia. The secondary structure of ITS-2 supported the separation of the strains into four species. -
The Symbiotic Green Algae, Oophila (Chlamydomonadales
University of Connecticut OpenCommons@UConn Master's Theses University of Connecticut Graduate School 12-16-2016 The yS mbiotic Green Algae, Oophila (Chlamydomonadales, Chlorophyceae): A Heterotrophic Growth Study and Taxonomic History Nikolaus Schultz University of Connecticut - Storrs, [email protected] Recommended Citation Schultz, Nikolaus, "The yS mbiotic Green Algae, Oophila (Chlamydomonadales, Chlorophyceae): A Heterotrophic Growth Study and Taxonomic History" (2016). Master's Theses. 1035. https://opencommons.uconn.edu/gs_theses/1035 This work is brought to you for free and open access by the University of Connecticut Graduate School at OpenCommons@UConn. It has been accepted for inclusion in Master's Theses by an authorized administrator of OpenCommons@UConn. For more information, please contact [email protected]. The Symbiotic Green Algae, Oophila (Chlamydomonadales, Chlorophyceae): A Heterotrophic Growth Study and Taxonomic History Nikolaus Eduard Schultz B.A., Trinity College, 2014 A Thesis Submitted in Partial Fulfillment of the Requirements for the Degree of Master of Science at the University of Connecticut 2016 Copyright by Nikolaus Eduard Schultz 2016 ii ACKNOWLEDGEMENTS This thesis was made possible through the guidance, teachings and support of numerous individuals in my life. First and foremost, Louise Lewis deserves recognition for her tremendous efforts in making this work possible. She has performed pioneering work on this algal system and is one of the preeminent phycologists of our time. She has spent hundreds of hours of her time mentoring and teaching me invaluable skills. For this and so much more, I am very appreciative and humbled to have worked with her. Thank you Louise! To my committee members, Kurt Schwenk and David Wagner, thank you for your mentorship and guidance. -
Evaluating Amplicon High–Throughput Sequencing Data of Microalgae Living in Melting Snow: Improvements and Limitations
Fottea, Olomouc, 19(2): 115–131, 2019 115 DOI: 10.5507/fot.2019.003 Evaluating amplicon high–throughput sequencing data of microalgae living in melting snow: improvements and limitations Stefanie Lutz1*, Lenka Procházková2*, Liane G. Benning1, 3,4, Linda Nedbalová2,5 & Daniel Remias6 1GFZ German Research Centre for Geosciences, Telegrafenberg, 14473 Potsdam, Germany; *Corresponding author e–mail: [email protected]; current address: Agroscope, Müller-Thurgau-Strasse 29, 8820 Wädenswil, Switzerland 2 Department of Ecology, Faculty of Science, Charles University, Viničná 7, 128 44 Prague 2, Czech Republic; *Corresponding author e–mail: [email protected] 3 School of Earth & Environment, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, UK 4 Department of Earth Sciences, Free University of Berlin, 12249 Berlin, Germany 5 The Czech Academy of Sciences, Institute of Botany, Dukelská 135, 379 82 Třeboň, Czech Republic 6 University of Applied Sciences Upper Austria, Stelzhamerstr. 23, 4600 Wels, Austria Abstract: Melting snowfields are dominated by closely related green algae. Although microscopy–based classifi- cation are evaluable distinction tools, they can be challenging and may not reveal the diversity. High–throughput sequencing (HTS) allows for a comprehensive community evaluation but has been rarely used in such ecosystems. We found that assigning taxonomy to DNA sequences strongly depends on the quality of the reference databases. Furthermore, for an accurate identification, a combination of manual inspection of automated assignments, and oligotyping of the abundant 18S OTUs and ITS2 secondary structure analyses were needed. The use of one marker can be misleading because of low variability (18S) or the scarcity of references (ITS2). -
Chilling Out: the Evolution and Diversification of Psychrophilic Algae with a Focus on Chlamydomonadales
Polar Biol (2017) 40:1169–1184 DOI 10.1007/s00300-016-2045-4 REVIEW Chilling out: the evolution and diversification of psychrophilic algae with a focus on Chlamydomonadales 1 1 1 Marina Cvetkovska • Norman P. A. Hu¨ner • David Roy Smith Received: 20 February 2016 / Revised: 20 July 2016 / Accepted: 10 October 2016 / Published online: 21 October 2016 Ó Springer-Verlag Berlin Heidelberg 2016 Abstract The Earth is a cold place. Most of it exists at or Introduction below the freezing point of water. Although seemingly inhospitable, such extreme environments can harbour a Almost 80 % of the Earth’s biosphere is permanently variety of organisms, including psychrophiles, which can below 5 °C, including most of the oceans, the polar, and withstand intense cold and by definition cannot survive at alpine regions (Feller and Gerday 2003). These seemingly more moderate temperatures. Eukaryotic algae often inhospitable places are some of the least studied but most dominate and form the base of the food web in cold important ecosystems on the planet. They contain a huge environments. Consequently, they are ideal systems for diversity of prokaryotic and eukaryotic organisms, many of investigating the evolution, physiology, and biochemistry which are permanently adapted to the cold (psychrophiles) of photosynthesis under frigid conditions, which has (Margesin et al. 2007). The environmental conditions in implications for the origins of life, exobiology, and climate such habitats severely limit the spread of terrestrial plants, change. Here, we explore the evolution and diversification and therefore, primary production in perpetually cold of photosynthetic eukaryotes in permanently cold climates. environments is largely dependent on microbes. -
Chloroplast Phylogenomic Analysis of Chlorophyte Green Algae Identifies a Novel Lineage Sister to the Sphaeropleales (Chlorophyceae) Claude Lemieux*, Antony T
Lemieux et al. BMC Evolutionary Biology (2015) 15:264 DOI 10.1186/s12862-015-0544-5 RESEARCHARTICLE Open Access Chloroplast phylogenomic analysis of chlorophyte green algae identifies a novel lineage sister to the Sphaeropleales (Chlorophyceae) Claude Lemieux*, Antony T. Vincent, Aurélie Labarre, Christian Otis and Monique Turmel Abstract Background: The class Chlorophyceae (Chlorophyta) includes morphologically and ecologically diverse green algae. Most of the documented species belong to the clade formed by the Chlamydomonadales (also called Volvocales) and Sphaeropleales. Although studies based on the nuclear 18S rRNA gene or a few combined genes have shed light on the diversity and phylogenetic structure of the Chlamydomonadales, the positions of many of the monophyletic groups identified remain uncertain. Here, we used a chloroplast phylogenomic approach to delineate the relationships among these lineages. Results: To generate the analyzed amino acid and nucleotide data sets, we sequenced the chloroplast DNAs (cpDNAs) of 24 chlorophycean taxa; these included representatives from 16 of the 21 primary clades previously recognized in the Chlamydomonadales, two taxa from a coccoid lineage (Jenufa) that was suspected to be sister to the Golenkiniaceae, and two sphaeroplealeans. Using Bayesian and/or maximum likelihood inference methods, we analyzed an amino acid data set that was assembled from 69 cpDNA-encoded proteins of 73 core chlorophyte (including 33 chlorophyceans), as well as two nucleotide data sets that were generated from the 69 genes coding for these proteins and 29 RNA-coding genes. The protein and gene phylogenies were congruent and robustly resolved the branching order of most of the investigated lineages. Within the Chlamydomonadales, 22 taxa formed an assemblage of five major clades/lineages. -
Ecophysiology, Secondary Pigments and Ultrastructure of Chlainomonas Sp
FEMS Microbiology Ecology Advance Access published February 15, 2016 Ecophysiology, secondary pigments and ultrastructure of Chlainomonas sp. (Chlorophyta) from the European Alps compared to Chlamydomonas nivalis forming red snow Running title: “Chlainomonas red snow” Research Article Keywords: astaxanthin, cryoflora, snow algae, spores, ultrastructure Thematic Issue “Polar and Alpine Microbiology” Remias Daniel1, Pichrtová Martina2, Pangratz Marion3, Lütz Cornelius4, Holzinger Andreas4* 1University of Applied Sciences Upper Austria, Wels, Austria; 2Charles University in Prague, Faculty of Science, Department of Botany, Prague, Czech Downloaded from Republic; 3University of Innsbruck, Institute of Pharmacy/Pharmacognosy, Austria; 4University of Innsbruck, Institute of Botany, Austria *Corresponding author: [email protected], Institute of Botany, Sternwartestr. 15, A-6020 Innsbruck. Telephone: +4351250751028, Fax: +4351250751099 http://femsec.oxfordjournals.org/ Abstract Red snow is a well-known phenomenon caused by microalgae thriving in alpine and Polar Regions during the melting season. Ecology and biodiversity of these organisms, which are adapted to low temperatures, high irradiance or freeze-thaw-events is still poorly understood. We compare two different snow by guest on March 1, 2016 habitats containing two different green algal genera in the European Alps, either blooming in seasonal rock-based snowfields (Chlamydomonas nivalis) or dominating waterlogged snow bedded over ice (Chlainomonas sp.). Despite morphological similarities of the red spores found at the snow surface, we investigate the differences in intracellular organization by light- and transmission electron microscopy and secondary pigments by chromatographic analysis in combination with mass spectrometry. Spores of Chlainomonas sp. show clear differences to Chlamydomonas nivalis in cell wall arrangement and plastid organization. Active photosynthesis at ambient temperatures indicates a high physiologic activity, despite no cell divisions are present. -
Of New Zealand Alpine Algae for the Production of Secondary
ISOLATION, CHARACTERISTATION AND SCREENING OF NEW ZEALAND ALPINE ALGAE FOR THE PRODUCTION OF SECONDARY METABOLITES IN PHOTOBIOREACTORS A thesis submitted in fulfilment of the requirements for the Degree of Doctor of Philosophy in Chemical and Process Engineering University of Canterbury By KISHORE GOPALAKRISHNAN Department of Chemical and Process Engineering, University of Canterbury, Christchurch, New Zealand 2015 i DEDICATED TO MY BELOVED FATHER MR GOPALAKRISHNAN SUBRAMANIAN. ii ABSTRACT This inter-disciplinary thesis is concerned with the production of polyunsaturated fatty acids (PUFAs) from newly isolated and identified alpine microalgae, and the optimization of the temperature, photon flux density (PFD), and carbon dioxide (CO2) concentration for their mass production in an airlift photobioreactor (AL-PBR). Thirteen strains of microalgae were isolated from the alpine zone in Canyon Creek, Canterbury, New Zealand. Ten species were characterized by traditional means, including ultrastructure, and subjected to phylogenetic analysis to determine their relationships with other strains. Because alpine algae are exposed to extreme conditions, and such as those that favor the production of secondary metabolites, it was hypothesized that alpine strains could be a productive source of PUFAs. Fatty acid (FA) profiles were generated from seven of the characterized strains and three of the uncharacterized strains. Some taxa from Canyon Creek were already identified from other alpine and polar zones, as well as non-alpine zones. The strains included relatives of species from deserts, one newly published taxon, and two probable new species that await formal naming. All ten distinct species identified were chlorophyte green algae, with three belonging to the class Trebouxiophyceae and seven to the class Chlorophyceae. -
Univerzita Karlova V Praze Přírodovědecká Fakulta
Univerzita Karlova v Praze Přírodovědecká fakulta Studijní program: Biologie Studijní obor: Obecná biologie Diverzita, ekologie a ekofyziologie sněžných řas Diversity, ecology and ecophysiology of snow algae Bakalářská práce Lenka Mikešová Vedoucí práce: RNDr. Linda Nedbalová, Ph.D. Praha, 2013 Prohlášení: Prohlašuji, že jsem závěrečnou práci zpracovala samostatně a že jsem uvedla všechny použité informační zdroje a literaturu. Tato práce ani její podstatná část nebyla předložena k získání jiného nebo stejného akademického titulu. V Praze, 17. 5. 2013 Podpis Poděkování: Na tomto místě bych ráda velmi poděkovala své školitelce RNDr. Lindě Nedbalové, Ph.D. za spoustu cenných rad a trpělivé a přátelské vedení mé bakalářské práce. Poděkování patří i mé rodině za jejich nezbytnou podporu a pomoc během celého studia. Abstrakt Trvalá i dočasná sněhová pokrývka polárních a horských oblastí je velmi extrémním habitatem. Přesto existují organismy, které toto prostředí obývají. Mezi významné zástupce kryosestonu patří zelené řasy z řádu Chlamydomonadales (Chlorophyta), které jsou známé z polárních a horských oblastí celého světa. Tyto organizmy, které obsadily sněžné prostředí pravděpodobně až sekundárně, dokázaly vyvinout různé ekofyziologické adaptace nezbytné k úspěšnému přežití v extrémních podmínkách. Nízké teploty a vysoká intenzita záření jsou hlavními faktory, kterým musí přítomné organizmy čelit. Mezi nejdůležitější mechanismy přežití patří přizpůsobení životních cyklů (například střídání odolných stádií a pohyblivých vegetativních stádií), syntéza a akumulace ochranných sekundárních karotenoidů, změna ve složení mastných kyselin membrán a u některých druhů snížení teplotního optima růstu. Právě tyto adaptace jsou v současnosti spolu se studiem diverzity hlavním předmětem výzkumu sněžných řas. Klíčová slova: Chlamydomonas, Chloromonas, sně žné řasy, živiny, životní cykly, psychrofilní, astaxanthin, polynenasycené mastné kyseliny Abstract Permanent and temporary snow cover in polar and mountain areas is a very extreme habitat. -
Ecophysiology of Chloromonas Hindakii Sp. Nov. (Chlorophyceae), Causing Orange Snow Blooms at Different Light Conditions
microorganisms Article Ecophysiology of Chloromonas hindakii sp. nov. (Chlorophyceae), Causing Orange Snow Blooms at Different Light Conditions Lenka Procházková 1,* , Daniel Remias 2 , Tomáš Rezankaˇ 3 and Linda Nedbalová 1 1 Department of Ecology, Faculty of Science, Charles University, Viniˇcná 7, 12844 Prague, Czech Republic 2 School of Engineering, University of Applied Sciences Upper Austria, Stelzhamerstr. 23, 4600 Wels, Austria 3 The Czech Academy of Sciences, Institute of Microbiology, Vídeˇnská 1083, 142 20 Prague, Czech Republic * Correspondence: [email protected]; Tel.: +420-221-95-1809 Received: 20 August 2019; Accepted: 2 October 2019; Published: 10 October 2019 Abstract: Slowly melting snowfields in mountain and polar regions are habitats of snow algae. Orange blooms were sampled in three European mountain ranges. The cysts within the blooms morphologically resembled those of Chloromonas nivalis (Chlorophyceae). Molecular and morphological traits of field and cultured material showed that they represent a new species, Chloromonas hindakii sp. nov. The performance of photosystem II was evaluated by fluorometry. For the first time for a snow alga, cyst stages collected in a wide altitudinal gradient and the laboratory strain were compared. The results showed that cysts were well adapted to medium and high irradiance. Cysts from high light conditions became photoinhibited at three times higher irradiances 2 1 (600 µmol photons m− s− ) than those from low light conditions, or likewise compared to cultured flagellates. Therefore, the physiologic light preferences reflected the conditions in the original habitat. A high content of polyunsaturated fatty acids (about 60% of total lipids) and the accumulation of the carotenoid astaxanthin was observed.