Freshwater Algae in Britain and Ireland - Bibliography
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Asexual Life History by Biflagellate Zoids In
Aquatic Botany 91 (2009) 213–218 Contents lists available at ScienceDirect Aquatic Botany journal homepage: www.elsevier.com/locate/aquabot Asexual life history by biflagellate zoids in Monostroma latissimum (Ulotrichales) Felix Bast a,*, Satoshi Shimada b, Masanori Hiraoka a, Kazuo Okuda a a Graduate School of Kuroshio Science, Kochi University, 2-5-1 Akebono, Kochi 780-8520, Japan b Graduate School of Humanities and Sciences, Ochanomizu University, Tokyo 112-8610, Japan ARTICLE INFO ABSTRACT Article history: Monostroma latissimum (Kuetzing) Wittrock is a monostromatic green alga of commercial importance in Received 16 December 2008 Japan. Here we report the serendipitous discovery of asexually reproducing specimens collected from Received in revised form 26 May 2009 Usa, on the Pacific coast of Kochi Prefecture, south-western Japan. Zoids were found to be biflagellate and Accepted 24 June 2009 negatively phototactic. Germination of settled zoids was observed to follow erect-filamentous ontogeny Available online 1 July 2009 similar to that of the previously reported sexual strain. Moreover, the newly discovered asexual strain had identical sequences of nuclear encoded ITS (Internal Transcribed Spacer) region to that of the sexual Keywords: strain. On the basis of this finding, we postulate that the ITS sequences may have been maintained in Internal Transcribed Spacer these conspecific strains despite the evolution in sexuality. Relationships were investigated among M. Life history Phylogeny latissimum and other monostromatic taxa within the -
Phylogenetic Placement of Botryococcus Braunii (Trebouxiophyceae) and Botryococcus Sudeticus Isolate Utex 2629 (Chlorophyceae)1
J. Phycol. 40, 412–423 (2004) r 2004 Phycological Society of America DOI: 10.1046/j.1529-8817.2004.03173.x PHYLOGENETIC PLACEMENT OF BOTRYOCOCCUS BRAUNII (TREBOUXIOPHYCEAE) AND BOTRYOCOCCUS SUDETICUS ISOLATE UTEX 2629 (CHLOROPHYCEAE)1 Hoda H. Senousy, Gordon W. Beakes, and Ethan Hack2 School of Biology, University of Newcastle upon Tyne, Newcastle upon Tyne NE1 7RU, UK The phylogenetic placement of four isolates of a potential source of renewable energy in the form of Botryococcus braunii Ku¨tzing and of Botryococcus hydrocarbon fuels (Metzger et al. 1991, Metzger and sudeticus Lemmermann isolate UTEX 2629 was Largeau 1999, Banerjee et al. 2002). The best known investigated using sequences of the nuclear small species is Botryococcus braunii Ku¨tzing. This organism subunit (18S) rRNA gene. The B. braunii isolates has a worldwide distribution in fresh and brackish represent the A (two isolates), B, and L chemical water and is occasionally found in salt water. Although races. One isolate of B. braunii (CCAP 807/1; A race) it grows relatively slowly, it sometimes forms massive has a group I intron at Escherichia coli position 1046 blooms (Metzger et al. 1991, Tyson 1995). Botryococcus and isolate UTEX 2629 has group I introns at E. coli braunii strains differ in the hydrocarbons that they positions 516 and 1512. The rRNA sequences were accumulate, and they have been classified into three aligned with 53 previously reported rRNA se- chemical races, called A, B, and L. Strains in the A race quences from members of the Chlorophyta, includ- accumulate alkadienes; strains in the B race accumulate ing one reported for B. -
Plant-Parasitic Algae (Chlorophyta: Trentepohliales) in American Samoa1
Plant-Parasitic Algae (Chlorophyta: Trentepohliales) in American Samoa1 Fnd E. Erooks 2 Abstract: A survey conducted betweenJune 2000 and May 2002 on the island of Tutuila, American Samoa, recorded filamentous green algae of the order Tren tepohliales (CWorophyta) and their plant hosts. Putative pathogenicity of the parasitic genus Cephaleuros and its lichenized state, Strig;ula, was also inves tigated. Three genera and nine species were identified: Cephaleuros (five spp.), Phycopeltis (two spp.), and Stomatochroon (two spp.). A widely distributed species of Trentepohlia was not classified. These algae occurred on 146 plant species and cultivars in 101 genera and 48 families; 90% of the hosts were dicotyledonous plants. Cephaleuros spp. have aroused worldwide curiosity, confusion, and con cern for over a century. Their hyphaelike filaments, sporangiophores, and as sociated plant damage have led unsuspecting plant pathologists to misidentify them as fungi, and some phycologists question their parasitic ability. Of the five species of Cephaleuros identified, C. virescens was the most prevalent, followed by C. parasiticus. Leaf tissue beneath thalli of Cephaleuros spp. on 124 different hosts was dissected with a scalpel and depth of necrosis evaluated using a four point scale. No injury was observed beneath thalli on 6% of the hosts, but full thickness necrosis occurred on leaves of 43% of hosts. Tissue damage beneath nonlichenized Cephaleuros thalli was equal to or greater than damage beneath lichenized thalli (Strig;ula elegans). In spite of moderate to severe leaf necrosis caused by Cephaleuros spp., damage was usually confined to older leaves near the base of plants. Unhealthy, crowded, poorly maintained plants tended to have the highest percentage of leaf surface area affected by TrentepoWiales. -
Neoproterozoic Origin and Multiple Transitions to Macroscopic Growth in Green Seaweeds
Neoproterozoic origin and multiple transitions to macroscopic growth in green seaweeds Andrea Del Cortonaa,b,c,d,1, Christopher J. Jacksone, François Bucchinib,c, Michiel Van Belb,c, Sofie D’hondta, f g h i,j,k e Pavel Skaloud , Charles F. Delwiche , Andrew H. Knoll , John A. Raven , Heroen Verbruggen , Klaas Vandepoeleb,c,d,1,2, Olivier De Clercka,1,2, and Frederik Leliaerta,l,1,2 aDepartment of Biology, Phycology Research Group, Ghent University, 9000 Ghent, Belgium; bDepartment of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Zwijnaarde, Belgium; cVlaams Instituut voor Biotechnologie Center for Plant Systems Biology, 9052 Zwijnaarde, Belgium; dBioinformatics Institute Ghent, Ghent University, 9052 Zwijnaarde, Belgium; eSchool of Biosciences, University of Melbourne, Melbourne, VIC 3010, Australia; fDepartment of Botany, Faculty of Science, Charles University, CZ-12800 Prague 2, Czech Republic; gDepartment of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742; hDepartment of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138; iDivision of Plant Sciences, University of Dundee at the James Hutton Institute, Dundee DD2 5DA, United Kingdom; jSchool of Biological Sciences, University of Western Australia, WA 6009, Australia; kClimate Change Cluster, University of Technology, Ultimo, NSW 2006, Australia; and lMeise Botanic Garden, 1860 Meise, Belgium Edited by Pamela S. Soltis, University of Florida, Gainesville, FL, and approved December 13, 2019 (received for review June 11, 2019) The Neoproterozoic Era records the transition from a largely clear interpretation of how many times and when green seaweeds bacterial to a predominantly eukaryotic phototrophic world, creat- emerged from unicellular ancestors (8). ing the foundation for the complex benthic ecosystems that have There is general consensus that an early split in the evolution sustained Metazoa from the Ediacaran Period onward. -
DNA Barcoding of the German Green Supralittoral Zone Indicates the Distribution and Phenotypic Plasticity of Blidingia Species and Reveals Blidingia Cornuta Sp
TAXON 70 (2) • April 2021: 229–245 Steinhagen & al. • DNA barcoding of German Blidingia species SYSTEMATICS AND PHYLOGENY DNA barcoding of the German green supralittoral zone indicates the distribution and phenotypic plasticity of Blidingia species and reveals Blidingia cornuta sp. nov. Sophie Steinhagen,1,2 Luisa Düsedau1 & Florian Weinberger1 1 GEOMAR Helmholtz Centre for Ocean Research Kiel, Marine Ecology Department, Düsternbrooker Weg 20, 24105 Kiel, Germany 2 Department of Marine Sciences-Tjärnö, University of Gothenburg, 452 96 Strömstad, Sweden Address for correspondence: Sophie Steinhagen, [email protected] DOI https://doi.org/10.1002/tax.12445 Abstract In temperate and subarctic regions of the Northern Hemisphere, green algae of the genus Blidingia are a substantial and environment-shaping component of the upper and mid-supralittoral zones. However, taxonomic knowledge on these important green algae is still sparse. In the present study, the molecular diversity and distribution of Blidingia species in the German State of Schleswig-Holstein was examined for the first time, including Baltic Sea and Wadden Sea coasts and the off-shore island of Helgo- land (Heligoland). In total, three entities were delimited by DNA barcoding, and their respective distributions were verified (in decreasing order of abundance: Blidingia marginata, Blidingia cornuta sp. nov. and Blidingia minima). Our molecular data revealed strong taxonomic discrepancies with historical species concepts, which were mainly based on morphological and ontogenetic char- acters. Using a combination of molecular, morphological and ontogenetic approaches, we were able to disentangle previous mis- identifications of B. minima and demonstrate that the distribution of B. minima is more restricted than expected within the examined area. -
Floristic Survey of Algae in Some Freshwater Habitats of Kohima District, Nagaland (India)
Journal of Advanced Plant Sciences 2021.11(1): 60-73 60 RESEARCH ARTICLE Floristic survey of Algae in some freshwater habitats of Kohima District, Nagaland (India) Keviphruonuo Kuotsu* and S. K. Chaturvedi Department of Botany, Nagaland University, Lumami-798627, Nagaland, India Received: 20 November 2020 / Revised: 12 April 2021 / Accepted: 30 April 2021 © Botanical Society of Assam 2021 blue green algae (Oinam et al.,2010, Devi et al., Abstract 2010) were reported from Nagaland. Studies was also done from the fresh water bodies (lakes, ponds The present paper deals with the algal flora study of streams and rivers) of Dimapur, Chumukedima, Kohima District, Nagaland, which is located Peren and Wokha districts, 94 algal taxa were between 25024’N - 25099’. N latitude and 94001’E - 0 reported (Das and Adhikary 2012). 94 29 E longitude with an average elevation of 1261m and an area of 1,595 sq. km. In the present Kohima district is the capital of Nagaland with an study, 40 algal taxa were reported where 5 algal taxa area of 1463 sq km and located between 25024’N - belongs to Class Cyanophyceae, 5 algal taxa belongs 25099’N latitude and 94001’E - 94029’E longitude to Class Chlorophyceae, 19 algal taxa belongs to with an average elevation of 1261 m. Algal work on Class Bacilariophyceae, 1 algal taxa belongs to Kohima District has not been reported by any Class Coscinodiscophyceae, 2 algal taxa belongs to workers and so the present study has been carried Class Ulvophyceae and 8 algal taxa belongs to Class out to study the flora and resources of algae on some Zygnematophyceae. -
Survey and Distribution of Batrachospermaceae (Rhodophyta) in Tropical, High-Altitude Streams from Central Mexico
Cryptogamie,Algol., 2007, 28 (3): 271-282 © 2007 Adac. Tous droits réservés Survey and distribution of Batrachospermaceae (Rhodophyta) in tropical, high-altitude streams from central Mexico JavierCARMONA Jiménez a* &GloriaVILACLARA Fatjób a A.P. 70-620,Ciudad Universitaria, Coyoacán, 04510. Departamento de Ecología y Recursos Naturales, Facultad de Ciencias, Universidad Nacional Autónoma de México,México,D.F. b Facultad de Estudios Superiores Iztacala. Universidad Nacional Autónoma de México,Tlalnepantla 54000,Estado de México,México. (Received 3 August 2006, accepted 26 October 2006) Abstract – Freshwater Rhodophyta populations from high altitude streams (1,725-2,900 m a.s.l.) in the Mexican Volcanic Belt (MVB), between 18-19° N and 96-100° W, were investigated through the sampling of six stream segments from 1982 to 2006. Three species are documented, Batrachospermum gelatinosum,B. helminthosum and Sirodotia suecica, including their descriptions and physical and chemical water quality data from their environment. Batachospermum helminthosum and S. suecica are reported for the second time in MVB streams, with a first description in detail for the freshwater red algal flora from Mexico. All species were found in tropical climates (two seasons along a year, dry and rainy), at high altitudes (> 1,700 m a.s.l.), mild water temperatures (9.0-20.4°C), circumneutral (pH 6.0-8.2, bicarbonate as the dominant anion), and with a relative low ionic content (salinity 0.1 to 0.2 g l –1, specific conductance 77-270 µS cm –1). Two ecological groups of species were clearly distinguished on the basis of nutrient content. The first group, which includes B. -
Audouinella Violacea (Kutz.) Hamel (Acrochaetiaceae, Rhodophyta)
Proceedings of the Iowa Academy of Science Volume 84 Number Article 5 1977 A Floridean Red Alga New to Iowa: Audouinella violacea (Kutz.) Hamel (Acrochaetiaceae, Rhodophyta) Donald R. Roeder Iowa State University Let us know how access to this document benefits ouy Copyright ©1977 Iowa Academy of Science, Inc. Follow this and additional works at: https://scholarworks.uni.edu/pias Recommended Citation Roeder, Donald R. (1977) "A Floridean Red Alga New to Iowa: Audouinella violacea (Kutz.) Hamel (Acrochaetiaceae, Rhodophyta)," Proceedings of the Iowa Academy of Science, 84(4), 139-143. Available at: https://scholarworks.uni.edu/pias/vol84/iss4/5 This Research is brought to you for free and open access by the Iowa Academy of Science at UNI ScholarWorks. It has been accepted for inclusion in Proceedings of the Iowa Academy of Science by an authorized editor of UNI ScholarWorks. For more information, please contact [email protected]. Roeder: A Floridean Red Alga New to Iowa: Audouinella violacea (Kutz.) Ha A Floridean Red Alga New to Iowa: Audouinella violacea (Kutz.) Hamel (Acrochaetiaceae, Rhodophyta) DONALD R. ROEDER 1 D ONALD R. R OEDER (Department of Botany and Plant Pathology, Iowa dominant wi th Cladophora glomerata (L.) Kutz. The alga was morphologicall y State University, Ames, Iowa 50011 ). A floridean red alga new to Iowa: similar to the Chantransia -stage of Batrachospermum fo und elsewhere in Iowa. Audouinella violacea (Kutz.) Hamel (Acrochaetiaceae, Rhodophyta), Proc. However, because mature Batrachospermum pl ants were never encountered in IowaAcad. Sci. 84(4): 139- 143, 1977. the Skunk River over a five year period, the aJga was assumed to be an Audouinella violacea (Kutz.) Hamel, previously unreported from Iowa, was an independent entity. -
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Cryptogamie, Algol., 2003, 24 (2): 117-131 © 2003 Adac. Tous droits réservés Blue-greenish acrochaetioid algae in freshwater habitats are “Chantransia” stages of Batrachospermales sensu lato (Rhodophyta) Marcelo Ribeiro ZUCCHI and Orlando NECCHI Jr* Departamento de Zoologia e Botânica, Universidade Estadual Paulista, Rua Cristóvão Colombo, 2265 - 15054-000 - São José do Rio Preto, SP, Brazil. Fax: 55 (17) 224-8692 (Received 25 February 2002, accepted 15 September 2002) Abstract — Fourteen culture isolates of freshwater acrochaetioid algae from distinct regions around the world were analysed, including the reddish species Audouinella hermannii, the dubious blue-greenish species A. pygmaea, and “Chantransia” stages from distinct taxonomic origins in the Batrachospermales sensu lato (Batrachospermaceae, Lemaneaceae and Thoreaceae). Four isolates (two ‘Chantransia’ stages and two species of Audouinella, A. hermannii and A. pygmaea) were tested under experimental conditions of temperature (10-25 oC), irradiance (65 and 300 µmol photons m–2 s–1) and photoperiod (16:8 h and 8:16 h light/dark cycles). Plant colour is proposed as the only vegetative char- acter that can be unequivocally applied to distinguish Audouinella from ‘Chantransia’, blue- greenish representing “Chantransia” stages and reddish applying to true Audouinella species (also forming reproductive structures other than monosporangia, e.g. tetrasporan- gia). Some isolates of A. pygmaea were proven to be unequivocally ‘Chantransia” stages owing either to production of juvenile gametophytes or to derivation from carpospores. No association of the morphology of A. pygmaea was found with any particular species, thus it should be regarded as a complex involving many species of the Batrachospermales sensu lato, as is also the case with A. -
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. -
Nomenclatural Notes on Some Philippine Species of Freshwater Red Algae (Rhodophyta)
Philippine Journal of Systematic Biology Vol. IV (June 2010) NOMENCLATURAL NOTES ON SOME PHILIPPINE SPECIES OF FRESHWATER RED ALGAE (RHODOPHYTA) LAWRENCE M. LIAO Graduate School of Biosphere Science, Hiroshima University, 1-4-4 Kagamiyama, Higashi-Hiroshima 739-8528, Japan Email: [email protected] INTRODUCTION The study of Philippine freshwater algae has primarily focused on microscopic and planktonic forms such as those of Velasquez (1962), Pantastico (1977), Tamayo-Zafaralla (1998) among others, with little information known about macroscopic forms. Among the larger, benthic forms inhabiting freshwater habitats, seven species in five genera of red algae (Rhodophyta) have so far been documented from the Philippines. Two of these species belong to the Batrachospermaceae as currently circumscribed by Entwisle et al. (2009), with one species Batrachospermum nonocense Kumano et Liao originally described from the Philippines, with its type locality in Nonoc Island, Surigao del Norte province. Another freshwater red alga, Nemalionopsis shawii Skuja, also has a Philippine type locality (Lamao Reserve, Bataan province) and is the generitype species of Nemalionopsis Skuja currently placed within the Thoreaceae, which was recently accommodated into its new segregate order, the Thoreales by Müller et al. (2002). The total number of Philippine freshwater red algae documented to date is low and is likely a product of several factors including poor collection efforts and lack of suitable habitats. Compared to Thailand which has a somewhat parallel history of freshwater red algal research as the Philippines, 26 species in 9 genera have so far been documented as a result of extensive surveys conducted in the western half as well as the southern extremities of the country (Peerapornpisal et al., 2006, Traichaiyaporn et al., 2008). -
Molecular Phylogeny and Taxonomic Revision of Chaetophoralean Algae (Chlorophyta)
University of South Bohemia in České Budějovice Faculty of Science Molecular phylogeny and taxonomic revision of chaetophoralean algae (Chlorophyta) Ph.D. Thesis Mgr. Lenka Caisová Supervisor RNDr. Jiří Neustupa, Ph.D. Department of Botany, Faculty of Sciences, Charles University in Prague Formal supervisor Prof. RNDr. Jiří Komárek, DrSc. University of South Bohemia, Faculty of Science, Institute of Botany, Academy of Sciences, Třeboň Consultants Prof. Dr. Michael Melkonian Biozentrum Köln, Botanisches Institut, Universität zu Köln, Germany Mgr. Pavel Škaloud, Ph.D. Department of Botany, Faculty of Sciences, Charles University in Prague České Budějovice, 2011 Caisová, L. 2011: Molecular phylogeny and taxonomic revision of chaetophoralean algae (Chlorophyta). PhD. Thesis, composite in English. University of South Bohemia, Faculty of Science, České Budějovice, Czech Republic, 110 pp, shortened version 30 pp. Annotation Since the human inclination to estimate and trace natural diversity, usable species definitions as well as taxonomical systems are required. As a consequence, the first proposed classification schemes assigned the filamentous and parenchymatous taxa to the green algal order Chaetophorales sensu Wille. The introduction of ultrastructural and molecular methods provided novel insight into algal evolution and generated taxonomic revisions based on phylogenetic inference. However, until now, the number of molecular phylogenetic studies focusing on the Chaetophorales s.s. is surprisingly low. To enhance knowledge about phylogenetic