DOCSLIB.ORG

Rezultati Rada

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Rezultati Rada Impacts of temperature regimes and radiation (PAR and UVR) conditions on the possible geographic distribution of desmids A dissertation submitted for the degree of Dr. rer. nat. (rerum naturalium) to the Department of Biology, Faculty of Mathematics, Informatics and Natural Sciences, University of Hamburg Prepared by Marija Stamenković March 2013 CONTENTS i TABLE OF CONTENTS LIST OF ABBREVIATIONS ............................................................................................................... iv SUMMARY ........................................................................................................................................... vi ZUSAMMENFASSUNG ....................................................................................................................... ix 1. General introduction and thesis outline .................................................................................. 1 1.1 A view on the geographic distribution of desmids...................................................... 1 1.2 Photosynthetically active and ultraviolet radiation ..................................................... 2 1.3 Main climatic zones ........................................................................................................ 5 1.4 The effects of high and low temperatures, high light stress and UV radiation on photosynthesis ................................................................................................................ 6 1.5 Objectives of the study ................................................................................................ 10 1.6 Thesis outline and declaration of contributions to the publications ...................... 11 REFERENCES ........................................................................................................................... 12 2. Growth and photosynthetic characteristics of several Cosmarium strains (Zygnematophyceae, Streptophyta) isolated from various geographic regions under a constant light-temperature regime ............................................................................................ 18 ABSTRACT .............................................................................................................................. 18 INTRODUCTION ..................................................................................................................... 19 MATERIALS AND METHODS ................................................................................................. 20 RESULTS .................................................................................................................................. 26 DISCUSSION ............................................................................................................................ 32 REFERENCES ........................................................................................................................... 37 3. Adaptation of growth and photosynthesis to certain temperature regimes is an indicator for the geographic distribution of Cosmarium strains (Zygnematophyceae, Streptophyta) ..................................................................................................................................... 41 ABSTRACT .............................................................................................................................. 41 INTRODUCTION ..................................................................................................................... 42 MATERIALS AND METHODS ................................................................................................. 43 RESULTS .................................................................................................................................. 47 DISCUSSION ............................................................................................................................ 52 REFERENCES ........................................................................................................................... 56 CONTENTS ii 4. Ultrastructural differences between six Cosmarium strains (Zygnematophyceae, Streptophyta) collected from various geographic zones at optimal, warm and cold temperatures ..................................................................................................................................... 59 ABSTRACT .............................................................................................................................. 59 INTRODUCTION ..................................................................................................................... 59 MATERIALS AND METHODS ................................................................................................. 61 RESULTS .................................................................................................................................. 63 DISCUSSION ............................................................................................................................ 75 REFERENCES ........................................................................................................................... 81 5. Protection strategies of Cosmarium strains (Zygnematophyceae, Streptophyta) isolated from various geographic regions against excessive photosynthetically active radiation ............................................................................................................................................ 85 ABSTRACT .............................................................................................................................. 85 INTRODUCTION ..................................................................................................................... 86 MATERIALS AND METHODS ................................................................................................. 87 RESULTS .................................................................................................................................. 91 DISCUSSION .......................................................................................................................... 100 REFERENCES ......................................................................................................................... 104 6. Composition of xanthophylls in several Cosmarium strains (Zygnematophyceae, Streptophyta) is related to their geographic distribution pattern ................................... 107 ABSTRACT ............................................................................................................................ 107 INTRODUCTION ................................................................................................................... 108 MATERIALS AND METHODS ............................................................................................... 109 RESULTS ................................................................................................................................ 112 DISCUSSION .......................................................................................................................... 120 REFERENCES ......................................................................................................................... 125 7. Sensitivity of photosynthesis to UV radiation in several Cosmarium strains (Zygnematophyceae, Streptophyta) is related to their geographic distribution ......... 129 ABSTRACT ............................................................................................................................ 129 INTRODUCTION ................................................................................................................... 130 MATERIALS AND METHODS ............................................................................................... 131 RESULTS ................................................................................................................................ 135 DISCUSSION .......................................................................................................................... 144 CONTENTS iii REFERENCES ......................................................................................................................... 149 8. Future perspectives .................................................................................................................. 154 9. Acknowledgements .................................................................................................................. 156 Conceptualisation and implementation of the experimental designs, data gathering and analyses, and manuscript writing of publications 1, 2, 3, 4, 5 and 6 were initiated and conducted by M. Stamenković. The publication No. 1: “Growth and photosynthetic characteristics of several Cosmarium strains (Zygnematophyceae, Streptophyta) isolated from various geographic regions under a constant light-temperature regime” is published in Aquatic Ecology (2011) 45:455–472, DOI 10.1007/s10452-011-9367-7. The publication No. 2: “Adaptation of growth and photosynthesis to certain temperature regimes is an indicator for the geographic distribution of Cosmarium strains (Zygnematophyceae, Streptophyta)” is published in European Journal of Phycology (2013) 48:116–127, DOI 10.1080/09670262.2013.772657 The publication No. 4: “Protection strategies of several Cosmarium strains (Zygnematophyceae, Streptophyta) isolated from various geographic regions against excessive photosynthetically
Load more

Recommended publications
  • Universidad Autónoma De Nuevo León Facultad De Ciencias Biológicas
    UNIVERSIDAD AUTÓNOMA DE NUEVO LEÓN FACULTAD DE CIENCIAS BIOLÓGICAS TESIS TAXONOMÍA, DISTRIBUCIÓN E IMPORTANCIA DE LAS ALGAS DE NUEVO LEÓN POR DIANA ELENA AGUIRRE CAVAZOS COMO REQUISITO PARCIAL PARA OBTENER EL GRADO DE DOCTOR EN CIENCIAS CON ACENTUACIÓN EN MANEJO Y ADMINISTRACIÓN DE RECURSOS VEGETALES MAYO, 2018 TAXONOMÍA, DISTRIBUCIÓN E IMPORTANCIA DE LAS ALGAS DE NUEVO LEÓN Comité de Tesis Presidente: Dr. Sergio Manuel Salcedo Martínez. Secretario: Dr. Sergio Moreno Limón. Vocal 1: Hugo Alberto Luna Olvera. Vocal 2: Dr. Marco Antonio Alvarado Vázquez. Vocal 3: Dra. Alejandra Rocha Estrada. TAXONOMÍA, DISTRIBUCIÓN E IMPORTANCIA DE LAS ALGAS DE NUEVO LEÓN Dirección de Tesis Director: Dr. Sergio Manuel Salcedo Martínez. AGRADECIMIENTOS A Dios, por guiar siempre mis pasos y darme fortaleza ante las dificultades. Al Dr. Sergio Manuel Salcedo Martínez, por su disposición para participar como director de este proyecto, por sus consejos y enseñanzas que siempre tendré presente tanto en mi vida profesional como personal; pero sobre todo por su dedicación, paciencia y comprensión que hicieron posible la realización de este trabajo. A la Dra. Alejandra Rocha Estrada, El Dr. Marco Antonio Alvarado Vázquez, el Dr. Sergio Moreno Limón y el Dr. Hugo Alberto Luna Olvera por su apoyo y aportaciones para la realización de este trabajo. Al Dr. Eberto Novelo, por sus valiosas aportaciones para enriquecer el listado taxonómico. A la M.C. Cecilia Galicia Campos, gracias Cecy, por hacer tan amena la estancia en el laboratorio y en el Herbario; por esas pláticas interminables y esas “riso terapias” que siempre levantaban el ánimo. A mis entrañables amigos, “los biólogos”, “los cacos”: Brenda, Libe, Lula, Samy, David, Gera, Pancho, Reynaldo y Ricardo.
    [Show full text]
  • Gênero Closterium (Closteriaceae) Na Comunidade Perifítica Do Reservatório De Salto Do Vau, Sul Do Brasil
    Gênero Closterium (Closteriaceae) ... 45 Gênero Closterium (Closteriaceae) na comunidade perifítica do Reservatório de Salto do Vau, sul do Brasil Sirlene Aparecida Felisberto & Liliana Rodrigues Universidade Estadual de Maringá, PEA/Nupélia. Av. Colombo, 3790, Maringá, Paraná, Brasil. [email protected] RESUMO – Este trabalho objetivou descrever, ilustrar e registrar a ocorrência de Closterium na comunidade perifítica do reservatório de Salto do Vau. As coletas do perifíton foram realizadas no período de verão e inverno, em 2002, nas regiões superior, intermediária e lacustre do reservatório. Os substratos coletados na região litorânea foram de vegetação aquática, sempre no estádio adulto. Foram registradas 23 espécies pertencentes ao gênero Closterium, com maior número para o período de verão (22) do que para o inverno (11). A maior riqueza de táxons foi registrada na região lacustre do reservatório no verão e na intermediária no inverno. As espécies melhor representadas foram: Closterium ehrenbergii Meneghini ex Ralfs var. immane Wolle, C. incurvum Brébisson var. incurvum e C. moniliferum (Bory) Ehrenberg ex Ralfs var. concavum Klebs. Palavras-chave: taxonomia, Closteriaceae, algas perifíticas, distribuição longitudinal. ABSTRACT – Genus Closterium (Closteriaceae) in periphytic community in Salto do Vau Reservoir, southern Brazil. The aim of this study was to describe, illustrate and to register the occurrence of Closterium in the periphytic community in Salto do Vau reservoir. The samples were collected in the summer and winter periods, during 2002. Samples were taken from natural substratum of the epiphyton type in the adult stadium. Substrata were collected in three regions from the littoral region (superior, intermediate, and lacustrine). In the results there were registered 23 species in the Closterium, with 22 registered in the summer and 11 in the winter period.
    [Show full text]
  • New Records and Rare Taxa for the Freshwater Algae of Turkey from the Tatar Dam Reservoir (Elazığ)
    Turkish Journal of Botany Turk J Bot (2018) 42: 533-542 http://journals.tubitak.gov.tr/botany/ © TÜBİTAK Research Article doi:10.3906/bot-1710-55 New records and rare taxa for the freshwater algae of Turkey from the Tatar Dam Reservoir (Elazığ) 1, 2 3 3 Memet VAROL *, Saul BLANCO , Kenan ALPASLAN , Gökhan KARAKAYA 1 Department of Basic Aquatic Sciences, Faculty of Fisheries, İnönü University, Malatya, Turkey 2 Institute of the Environment, León, Spain 3 Aquaculture Research Institute, Elazığ, Turkey Received: 28.10.2017 Accepted/Published Online: 03.04.2018 Final Version: 24.07.2018 Abstract: Recently, the number of algological studies in Turkish inland waters has increased remarkably. However, taxonomic and floristic studies on algae in the Euphrates basin are still scarce. This study contributes new information to the knowledge of the Turkish freshwater algal flora. Phytoplankton samples were collected from the Tatar Dam Reservoir in the Euphrates Basin between January 2016 and December 2016. Two taxa were recorded for first time and 14 rare taxa for the freshwater algae of Turkey were identified in this study. The new records belong to the phylum Bacillariophyta, whereas taxa considered as rare belong to the phyla Chlorophyta, Cyanobacteria, Rhodophyta, Charophyta, Euglenophyta, and Bacillariophyta. The morphology and taxonomy of these taxa are briefly described in the paper and original light microscopy illustrations are provided. Key words: Freshwater algae, new records, rare taxa, Tatar Dam Reservoir, Turkey 1. Introduction 2. Materials and methods Algae are the undisputed primary producers in aquatic 2.1. Study area ecosystems. They play also an important role in biological The Tatar Dam Reservoir is located on the border of Elazığ monitoring programs since these organisms reflect the and Tunceli provinces in eastern Anatolia (Figure 1).
    [Show full text]
  • Journal of Ecology and the Natural Environment
    Journal of Ecology and The Natural Environment Volume 8 Number 7, July 2016 ISSN 2006-9847 ABOUT JENE The Journal of Ecology and the Natural Environment (JENE) (ISSN 2006-9847) is published Monthly (one volume per year) by Academic Journals. Journal of Ecology and the Natural Environment (JENE) provides rapid publication (monthly) of articles in all areas of the subject such as biogeochemical cycles, conservation, paleoecology, plant ecology etc. The Journal welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. Papers will be published shortly after acceptance. All articles published in JENE are peer-reviewed. Contact Us Editorial Office: [email protected] Help Desk: [email protected] Website: http://www.academicjournals.org/journal/JENE Submit manuscript online http://ms.academicjournals.me/ Editors Associate Editors Dr. Abd El-Latif Hesham Dr. Marko Sabovljevic Genetics Department, Faculty of Agriculture, Assiut Dept. Plant Ecology, Faculty of Biology, University, University of Belgrade Assiut 71516, Takovska 43, 11000 Belgrade, Egypt Serbia Dr. Ahmed Bybordi Dr. Sime-Ngando Télesphore East Azarbaijan Research Centre for Agriculture and CNRS Natural Resources, Tabriz, Iran LMGE, UMR 6023, Université Blaise Pascal, 63177, Aubière Cedex Dr. Sunil Kumar France Natural Resource Ecology Laboratory, Colorado State University Dr. Bernd Schierwater 1499 Campus Delivery, A204 NESB, Fort Collins, ITZ, Ecology and Evolution, TiHo Hannover Colorado-80526, Büenteweg 17d, 30559 Hannover, USA Germany Prof. Gianfranco Rizzo Dr. Bhattacharyya Pranab University of Palermo North-East Institute of Science & Technology Dipartimeno DREAM – Viale delle Scienze - Building Medicinal, Aromatic & Economic Plant Division, 9. 90128 North-East Institute of Science & Technology, Palermo, Jorhat-785006, Assam, Italy India Dr.
    [Show full text]
  • Freshwater Algae in Britain and Ireland - Bibliography
    Freshwater algae in Britain and Ireland - Bibliography Floras, monographs, articles with records and environmental information, together with papers dealing with taxonomic/nomenclatural changes since 2003 (previous update of ‘Coded List’) as well as those helpful for identification purposes. Theses are listed only where available online and include unpublished information. Useful websites are listed at the end of the bibliography. Further links to relevant information (catalogues, websites, photocatalogues) can be found on the site managed by the British Phycological Society (http://www.brphycsoc.org/links.lasso). Abbas A, Godward MBE (1964) Cytology in relation to taxonomy in Chaetophorales. Journal of the Linnean Society, Botany 58: 499–597. Abbott J, Emsley F, Hick T, Stubbins J, Turner WB, West W (1886) Contributions to a fauna and flora of West Yorkshire: algae (exclusive of Diatomaceae). Transactions of the Leeds Naturalists' Club and Scientific Association 1: 69–78, pl.1. Acton E (1909) Coccomyxa subellipsoidea, a new member of the Palmellaceae. Annals of Botany 23: 537–573. Acton E (1916a) On the structure and origin of Cladophora-balls. New Phytologist 15: 1–10. Acton E (1916b) On a new penetrating alga. New Phytologist 15: 97–102. Acton E (1916c) Studies on the nuclear division in desmids. 1. Hyalotheca dissiliens (Smith) Bréb. Annals of Botany 30: 379–382. Adams J (1908) A synopsis of Irish algae, freshwater and marine. Proceedings of the Royal Irish Academy 27B: 11–60. Ahmadjian V (1967) A guide to the algae occurring as lichen symbionts: isolation, culture, cultural physiology and identification. Phycologia 6: 127–166 Allanson BR (1973) The fine structure of the periphyton of Chara sp.
    [Show full text]
  • Especies De Algas De Ríos De Nuevo León, México: Nuevos Registros Para El Estado
    Núm. 46: 1-25 Julio 2018 ISSN electrónico: 2395-9525 Polibotánica ISSN electrónico: 2395-9525 [email protected] Instituto Politécnico Nacional México http:www.polibotanica.mx ESPECIES DE ALGAS DE RÍOS DE NUEVO LEÓN, MÉXICO: NUEVOS REGISTROS PARA EL ESTADO ALGAE SPECIES FROM NUEVO LEON, MEXICO: NEW RECORDS FOR THE STATE Aguirre-Cavazos, D.E.; S. Moreno-Limón, y S.M. Salcedo-Martínez ESPECIES DE ALGAS DE RÍOS DE NUEVO LEÓN, MÉXICO: NUEVOS REGISTROS PARA EL ESTADO. ALGAE SPECIES FROM NUEVO LEON, MEXICO: NEW RECORDS FOR THE STATE. Núm. 46: 1-25 México. Julio 2018 Instituto Politécnico Nacional DOI: 10.18387/polibotanica.46.1 1 Núm. 46: 1-25 Julio 2018 ISSN electrónico: 2395-9525 ESPECIES DE ALGAS DE RÍOS DE NUEVO LEÓN, MÉXICO: NUEVOS REGISTROS PARA EL ESTADO ALGAE SPECIES FROM NUEVO LEON, MEXICO: NEW RECORDS FOR THE STATE D.E. Aguirre-Cavazos Herbario, Facultad de Ciencias Biológicas, Aguirre-Cavazos, D.E.; S. Moreno-Limón, y Universidad Autónoma de Nuevo León. S.M. Salcedo Martínez S. Moreno-Limón Laboratorio de Fisiología Vegetal, Facultad de Ciencias Biológicas, ESPECIES DE ALGAS DE RÍOS DE NUEVO LEÓN, Universidad Autónoma de Nuevo León. MÉXICO: NUEVOS REGISTROS PARA EL S.M. Salcedo-Martínez/ [email protected] ESTADO Herbario, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León. ALGAE SPECIES FROM NUEVO LEON, MEXICO: NEW RECORDS FOR THE STATE RESUMEN: El conocimiento de las algas continentales de México es aún deficiente. Los registros taxonómicos suman actualmente 3 256 especies, pero muchos de ellos carecen de una descripción, una ilustración o de ambas, además de información ecológica o de su potencial económico.
    [Show full text]
  • Highlights of Recent Collections of Marine Algae from the Sultanate
    ABSTRACTS 1 1 2 PALATABILITY AND CHEMICAL DEFENSES DINOFLAGELLATE GENOMICS: RESULTS OF MACROALGAE IN THE ANTARCTIC FROM AN EST APPROACH PENINSULA Bachvaroff, T. R.1,∗, Herman, E. M.2 & Amsler, C. D.1,∗, Amsler, M. O.1, McClintock, J. B.1, Delwiche, C. F.1 Iken, K. B.1, Hubbard, J. M.1 & Baker, W. J.2 1Cell Biology and Molecular Genetics, University of 1Department of Biology, University of Alabama at Maryland, College Park, MD 20742; 2Soybean Genomic Birmingham, Birmingham, AL 35294-1170; 2Department Improvement Laboratory, USDA/ARS, Beltsville, MD of Chemistry, University of South Florida, Tampa, FL 20705, USA 33620, USA Dinoflagellates are enigmatic protists with odd nu- We examined palatability of 37 species of nonen- clear features, interesting plastid gene arrangements crusting macroalgae from the Antarctic Peninsula. and a proclivity for endosymbiotic relationships. Rel- This represents approximately 30% of the entire atively little molecular work has been done on di- antarctic macroalgal flora and 75% of the 49 noflagellates, and only a handful of genes have been nonencrusting species we collected. Organic extracts characterized in these organisms. We have begun an from most species were also prepared and mixed Expressed Sequenced Tag (EST) project with the aim into artificial foods. We examined palatability using of collecting plastid targeted but nuclear encoded feeding bioassays with three common, macroalga- genes from peridinin-containing dinoflagellates. This consuming animals (an omnivorous antarctic rock- provides an opportunity to understand the integra- fish, Notothenia coriiceps; an omnivorous sea star, tion of endosymbiont genes into the host cell. Our se- Odontaster validus; and a herbivorous amphipod, Gon- quencing effort has produced about 1000 unique ESTs dogenia antarctica).
    [Show full text]
  • Especies De Algas De Ríos De Nuevo León, México: Nuevos Registros Para El Estado Polibotánica, Núm
    Polibotánica ISSN: 1405-2768 Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas Aguirre-Cavazos, D.E.; Moreno-Limón, S.; Salcedo-Martínez, S.M. Especies de algas de ríos de Nuevo León, México: nuevos registros para el estado Polibotánica, núm. 46, 2018, pp. 1-25 Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas DOI: https://doi.org/10.18387/polibotanica.46.1 Disponible en: https://www.redalyc.org/articulo.oa?id=62158254001 Cómo citar el artículo Número completo Sistema de Información Científica Redalyc Más información del artículo Red de Revistas Científicas de América Latina y el Caribe, España y Portugal Página de la revista en redalyc.org Proyecto académico sin fines de lucro, desarrollado bajo la iniciativa de acceso abierto Núm. 46: 1-25 Julio 2018 ISSN electrónico: 2395-9525 Polibotánica ISSN electrónico: 2395-9525 [email protected] Instituto Politécnico Nacional México http:www.polibotanica.mx ESPECIES DE ALGAS DE RÍOS DE NUEVO LEÓN, MÉXICO: NUEVOS REGISTROS PARA EL ESTADO ALGAE SPECIES FROM NUEVO LEON, MEXICO: NEW RECORDS FOR THE STATE Aguirre-Cavazos, D.E.; S. Moreno-Limón, y S.M. Salcedo-Martínez ESPECIES DE ALGAS DE RÍOS DE NUEVO LEÓN, MÉXICO: NUEVOS REGISTROS PARA EL ESTADO. ALGAE SPECIES FROM NUEVO LEON, MEXICO: NEW RECORDS FOR THE STATE. Núm. 46: 1-25 México. Julio 2018 Instituto Politécnico Nacional DOI: 10.18387/polibotanica.46.1 1 Núm. 46: 1-25 Julio 2018 ISSN electrónico: 2395-9525 ESPECIES DE ALGAS DE RÍOS DE NUEVO LEÓN, MÉXICO: NUEVOS REGISTROS PARA EL ESTADO ALGAE SPECIES FROM NUEVO LEON, MEXICO: NEW RECORDS FOR THE STATE D.E.
    [Show full text]
  • Taxonomy and Nomenclature of the Conjugatophyceae (= Zygnematophyceae)
    Review Algae 2013, 28(1): 1-29 http://dx.doi.org/10.4490/algae.2013.28.1.001 Open Access Taxonomy and nomenclature of the Conjugatophyceae (= Zygnematophyceae) Michael D. Guiry1,* 1AlgaeBase and Irish Seaweed Research Group, Ryan Institute, National University of Ireland, Galway, Ireland The conjugating algae, an almost exclusively freshwater and extraordinarily diverse group of streptophyte green algae, are referred to a class generally known as the Conjugatophyceae in Central Europe and the Zygnematophyceae elsewhere in the world. Conjugatophyceae is widely considered to be a descriptive name and Zygnematophyceae (‘Zygnemophyce- ae’) a typified name. However, both are typified names and Conjugatophyceae Engler (‘Conjugatae’) is the earlier name. Additionally, Zygnemophyceae Round is currently an invalid name and is validated here as Zygnematophyceae Round ex Guiry. The names of orders, families and genera for conjugating green algae are reviewed. For many years these algae were included in the ‘Conjugatae’, initially used as the equivalent of an order. The earliest use of the name Zygnematales appears to be by the American phycologist Charles Edwin Bessey (1845-1915), and it was he who first formally redistrib- uted all conjugating algae from the ‘Conjugatae’ to the orders Zygnematales and the Desmidiales. The family Closte- riaceae Bessey, currently encompassing Closterium and Spinoclosterium, is illegitimate as it was superfluous when first proposed, and its legitimization is herein proposed by nomenclatural conservation to facilitate use of the name. The ge- nus Debarya Wittrock, 1872 is shown to be illegitimate as it is a later homonym of Debarya Schulzer, 1866 (Ascomycota), and the substitute genus name Transeauina Guiry is proposed together with appropriate combinations for 13 species currently assigned to the genus Debarya Wittrock.
    [Show full text]
  • PLANT SCIENCE TODAY, 2021 Vol 8(4): 885–896 HORIZON E-Publishing Group ISSN 2348-1900 (Online)
    PLANT SCIENCE TODAY, 2021 Vol 8(4): 885–896 HORIZON https://doi.org/10.14719/pst.2021.8.4.1229 e-Publishing Group ISSN 2348-1900 (online) RESEARCH ARTICLE New records of desmids from Ropar wetland (a Ramsar Site) of Punjab, India Komal1, J.I.S. Khattar2, D.P. Singh2 & Yadvinder Singh1* 1Department of Botany and Environmental Science, Sri Guru Granth Sahib World University, Fatehgarh Sahib 140 406, Punjab, India 2Department of Botany, Punjabi University, Patiala 147002, Punjab, India *Email: [email protected] ARTICLE HISTORY ABSTRACT Received: 24 April 2021 This study deals with exploration of freshwater desmids for the first time from Ropar wetland (Ramsar Accepted: 21 July 2021 site) of Punjab (India) to assess their taxonomic aspects and bio-geographical distribution. During this Available online: 24 August 2021 study, samples of planktonic, epiphytic and epilithic desmids were collected from littoral zone and were observed under light microscope for their morphometric characteristics based identification. Total 21 desmids species belonging to 4 genera of 2 families (Closteriaceae and Desmidiaceae) were KEYWORDS identified from the collected samples. Among them, Cosmarium with 11 species (C. awadhense, C. Closteriaceae bioculatum, C. trilobatum, C. divergens, C. granatum, C. moniliforme, C. nitidulum, C. subtumidum, C. desmid reniforme, C. undulatum and C. obtusatum) was found to be most abundant followed by Closterium India with 7 species (C. acerosum, C. dianae, C. incurvum, C. leibleinii, C. lunula, C. pritchardianum and C. Punjab aciculare), Euastrum with 2 species (E. spinulosum and E. platycerum) and Staurastrum with 1 species Ropar wetland (S. crenulatum). The geographic distribution of identified desmid taxa in India has been also recorded.
    [Show full text]
  • Erwägungen Über Die Taxonomie Der Gattung Closterium 1
    Preslia, Praha, 47: 193-210~ 1975 Erwägungen über die Taxonomie der Gattung Closterium 1 Uvahy o taxonomii rodu Closterium .I Jifi Ruzicka RüZ!cKA .J. (1975): Erwägungen über die Taxonomie der Gattung Closterium I. - Preslia, Praha, 47: 193 - 210. The taxonomy and nomenolature of the genus Closterium N ITZSCH ex RALFS 1848 are still obscure in many respects. An attempt is made to explain the ca.uses of the diffi­ culties and to elucidate the circumscription of some taxa, especially Central European or those recognized in the commonly used monographs of the Desmids. As far as it is possible on the basis of the present knowledge, some taxonomic improvements are proposed. The following new combinations are made: Closterium abruptum var. maius (.J. et P. TRAUNST.) Rü:lrcKA, comb. nova, C. angustatu.m var. sculptum (RACIB.) RüZlcKA, comb. nova and C. closterioides va.r. elongatUtm (W. KRIEG.) RüZloKA, comb. nova. Z eyerova 1343, 397 01 P isek, Czechoslovakia. EINLEITUNG Die meisten Desmidiologen sind sich dessen gut bewusst, dass in der bis­ herigen Literatur, die allgemein benutzten Monographien der Zieralgen ein­ gerechnet, die Arten und die infraspezifischen Taxa der Gattung Closterium NrTZSCH ex RALFS 1848 (Closteriaceae, Desmidiales, Conjugatophyceae) zu einem hohen Prozentsatz unverlässlich, unklar oder sogar unrichtig aufge­ fasst werden. Im folgenden Aufsatz will ich den Versuch machen, einige solche Unklarheiten zu lösen oder wenigstens auf sie aufmerksam zu machen. Es war nicht möglich, in einem Artikel mit beschränktem Umfang alle bemerkenswerten Taxa zu bearbeiten. Ich musste mich nur auf jene be­ schränken, die für Mitteleuropa wichtig sind und die in allgemein benutzten Monographien enthalten sind, vor allem in der Monographie von W.
    [Show full text]
  • Hidden Genetic Diversity in the Green Alga Spirogyra (Zygnematophyceae, Streptophyta) Charlotte Chen1, Michael HJ Barfuss2, Thomas Pröschold1,3 and Michael Schagerl1*
    Chen et al. BMC Evolutionary Biology 2012, 12:77 http://www.biomedcentral.com/1471-2148/12/77 RESEARCH ARTICLE Open Access Hidden genetic diversity in the green alga Spirogyra (Zygnematophyceae, Streptophyta) Charlotte Chen1, Michael HJ Barfuss2, Thomas Pröschold1,3 and Michael Schagerl1* Abstract Background: The unbranched filamentous green alga Spirogyra (Streptophyta, Zygnemataceae) is easily recognizable based on its vegetative morphology, which shows one to several spiral chloroplasts. This simple structure falsely points to a low genetic diversity: Spirogyra is commonly excluded from phylogenetic analyses because the genus is known as a long-branch taxon caused by a high evolutionary rate. Results: We focused on this genetic diversity and sequenced 130 Spirogyra small subunit nuclear ribosomal DNA (SSU rDNA) strands of different origin. The resulting SSU rDNA sequences were used for phylogenetic analyses using complex evolutionary models (posterior probability, maximum likelihood, neighbor joining, and maximum parsimony methods). The sequences were between 1672 and 1779 nucleotides long. Sequence comparisons revealed 53 individual clones, but our results still support monophyly of the genus. Our data set did not contain a single slow-evolving taxon that would have been placed on a shorter branch compared to the remaining sequences. Out of 130 accessions analyzed, 72 showed a secondary loss of the 1506 group I intron, which formed a long-branched group within the genus. The phylogenetic relationship to the genus Spirotaenia was not resolved satisfactorily. The genetic distance within the genus Spirogyra exceeded the distances measured within any other genus of the remaining Zygnemataceae included in this study. Conclusion: Overall, we define eight distinct clades of Spirogyra, one of them including the genus Sirogonium.
    [Show full text]