DOCSLIB.ORG

First Record of Acetabularia Myriospora (Polyphysaceae, Chlorophyta) in the Ceará State, Brazil

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
First Record of Acetabularia Myriospora (Polyphysaceae, Chlorophyta) in the Ceará State, Brazil Journal of Aquaculture & Marine Biology First Record of Acetabularia myriospora (Polyphysaceae, Chlorophyta) in the Ceará State, Brazil Abstract Case Report On rocky shores, macroalgae play an ecological role as organizer of community structures, since they are source of food for many invertebrate species inhabiting their fronds, as well as providing shelter from predators, enhancing environment conditions Volume 6 Issue 5 - 2017 and reducing water movement. With this in mind, detecting new species on a regional scale is of major importance for biodiversity monitoring and conservation. In the Acetabularia myriospora was made 1 A. myriospora Laboratório de Sanidade Aquática, Centro de Ciências Agrárias, Universidade Federal Rural do Semi-Árido, Brazil current study, a first record of the seaweed species A. calyculus (17.43%). This 2 in the offshore of Ceará state, Brazil. The Acetabulariafrequency of occurrencemyriospora of(Polyphysaceae, Pós-graduação em Produção Animal, Centro de Ciências Chlorophyta)(1.62%) is considered in the coastline low whether of Ceará compared state. to that of Agrárias, Universidade Federal Rural do Semi-Árido, Brazil study is the first record of the species 3Departamento de Oceanografia e Limnologia, Universidade Keywords: Federal do Rio Grande do Norte (UFRN), Brazil Macroalgae; Biodiversity; Coastline; Seaweed *Corresponding author: Naibe Cristina de Figueiredo, Agrárias, Universidade Federal Rural do Semi-Árido, Rio Laboratório de Sanidade Aquática, Centro de Ciências Email: Introduction Grande do Norte, Brazil, Tel: +55-84986352976; In the last century, an alarming rise in the dissemination of Received: | Published: December 04, November 14, 2017 2017 inexotic standard species species among and oceans habitat worldwide, diversity boostedare important by expand to the of maritime commerce and fish farming [1]. Studies on changes Hard surfaces as intertidal areas or continuously submerged occurrence was based on the number of samples, being estimated understanding of natural species assemblage structures [2]. rocks are ideal habitats for releasing of several organisms, such by the formula below: as algae [3]. On rocky shores, macroalgae play an ecological role as organizer of community structures, since they are source of To×100 Fo = food for many invertebrate species inhabiting their fronds, as Ta well as providing shelter from predators, enhancing environment conditions and reducing water movement [4,5]. With this in mind, detecting new species on a regional scale is of In which, Fo is the frequency of occurrence, To is the number of major importance for biodiversity monitoring and conservation. samples in which the taxon was found, and Ta is the total number of samples.Taxa classification as well as species and genus Acetabularia myriospora was made in the offshore of Ceará state, identifications were determined based on specific bibliography northeastIn the current Brazil. study, the first record of the seaweed species Resultsabout flora and and Discussion reviews of taxonomic groups [8]. Material and Methods The genus Acetabularia is divided into two subgenera: Acetabularia and Acicularia [9]. In Brazil, fourspecies belonging The study was performed in the algae bank of Barrinha, located to Acicularia Acetabularia schenckii Möbius, Acetabularia calyculus J.V.Lamourin Quoy & Gaimard, survey was made in two manual random samplings during spring Acetabulariawere crenulataidentified: Acetabularia low-tideon the coastline days. Species of Icapuí were city, infound the state on rocks, of Ceará, sandstone Brazil. A reefsfloristic or myriospora1889; Joly & Cord.-Mar. in Jolyetal. 1965 [10]. Besides, two even in tide pools. The material was collected and packaged into species1824; belonging to AciculariaJ.V.Lamour, (Table 1) 1816 were and observed in the study area. Reis TNDV, et al. [6], formulated from formaldehyde in seawater atplastic 4% andbags, then properly taken labeled,to the laboratory, fixed in a solutionwhere zoobenthos as described were by The species A. Calyculus had already been recorded for the separated. in Icapuí algae bank. In Brazil, A. Myriospora inphycological the state of flora Bahia, of this after state that, [11], other however, records it were is the made first registeraround for seaweeds [7]. Morphological and anatomical details were was firstly catalogued Identification was carried out following traditional techniques the country [12]. However, this species has not hitherto been observed under stereoscopic microscope. Specimen frequency of identified in Ceará state coastline. Submit Manuscript | http://medcraveonline.com J Aquac Mar Biol 2017, 6(5): 00168 First Record of Acetabularia myriospora (Polyphysaceae, Chlorophyta) in the Ceará Copyright: 2/2 State, Brazil ©2017 Figueiredo et al. Table 1: Conflict of Interest Icapuí coastline, Ceará state, Brazil. Taxonomic synopsis of the two seaweed species identified in Taxon ReferencesThe authors declare no conflict of interests. Chlorophyta 1. Marbà Dasycladales and habitat impacts of Lophocladia lallemandii invasions on endemic Polyphysaceae N, Arthur R, Alcoverro T (2014) Getting turfed: The population Acetabularia calyculus* 2. Posidonia oceanica meadows. Aquatic Botany 116: 76-82. species on rocky shore macroalgal assemblages: Zonation patterns, Raffo MP, Lo Russo V, Schwindt E (2013) Introduced and native Acetabularia myriospora** 3. *First occurrence in Icapuí costline composition and diversity. Aquatic Botany 112: 57-65. Alien species and other notable records from a rapid assessment **First occurrence in Ceará state coastline surveyArenas F,of Bishop marinas JD, Carltonon the JT,south Dyrynda coast PJ, of Farnham England. WF, Journal et al. (2006)of the A. Myriospora considered low whether compared to that of A. calyculus (17.43%) 4. MarineBrito L, Biological Szé Association of the UK 86(06): 1329-1337. ômico The frequency of occurrence of (1.62%) is das Macroalgas da Zona das Marés de Costões Rochosos Adjacentes A. myriospora is rarely sampled, ao Terminal chyMar M,í Cassano V (2002) Levantamento Taxonía da Ilha mainly for being a small species inhabiting rocky shores and being associated(Figure 1); tothis larger might species. be because timo Almirante Maximiano Fonseca, Ba 5. Grande,Jenkins SR,RJ. AtlânticaHawkins SJ,24(1): Norton 17-26. TA (1999) Direct and indirect effects of a macroalgal canopy and limpet grazing in structuring a sheltered 6. inter-tidal community. Marine Ecology Progress Series 188: 81-92. SuapeReis TNDV, (Western Guimarães-Barros Tropical Atlantic) NC, VasconcelosOn The Biodiversity ERTPP De, And Cocentino Biomass ADLM, Fujii MT (2011) Influence Of The Industrial Port Complex Of 7. OfMarins Phaeophyceae. BV, Brasileiro Tropical PS, Barreto Oceanography, MBB, Nunes 39(2): JMDC 142-154. JMC, Yoneshigue- the Todos os Santos Bay, Bahia State, Brazil. Oecologia Brasiliensis Valentin Y, Amado Filho GM (2008) Subtidal benthic marine algae of 8. 12(02): 229-242. subtropical Western Atlantic: changes in our understanding in the Wynne MJ (2011) The benthic marine algae of the tropical and 9. lastBerger half S,century. Fettweiss Algae U, 26(2): Gleissberg 109-140. S, Liddle LB, Richter U, et al. Figure 1: rDNA phylogeny and evaluation of cap development (genus Acetabularia and subgenus Acicularia) sampled in the coastline in Polyphysaceae (2003) 18S of Icapuí, CearáFrequency state, Brazil.of occurrence of the two species of seaweeds (formerly Acetabulariaceae; Dasyladales, 10. Chlorophyta).Moura CWDN, Phycologia Almeida WRD, 42(5): Santos 506-561. AAD, Junior A, Alves AM, et Hence, the importance of this study relies on the fact that little Polyphysaceae (Dasycladales, Chlorophyta) in Todos os al. (2014) need for further studies to detect upcoming species. Indeed, two 11. SantosDantas Bay,NP, Bahia,Alves MGL,Brazil. Cunha Acta Botanica VL da, Ribeiro Brasilica DS, 28(2): Oliveira-Neto 147-164. JM is known about the marine flora of the state, warning against the ário Ficológico Do Instituto De Acetabularia Ci ncias Do Mar Da Universidade Federal Do Ceará myriosporanew species(Polyphysaceae, of algae were Chlorophyta)surveyed for inthe the region coastline of Icapuí; of Ceará in Ci(1999) de. Reorganização Do Herb state.addition, it has been the first record of the species ê . Arquivos de 12. Martinsências DoDV, Mar Cordeiro-Manno 32: 59-71. M, Boccanera NB, Nunes JM de C (1991) Clorofíceas marinhas bentônicas do município de salvador, Acknowledgement Thanks to Marcia Avelino Coelho for auditing the study. To 13. bahia, brasil 18(2): 115-133.álogo De Algas Marinhas Bentônicas Do Nunes JM (1998) de C. Cat Conselho Nacional de DesenvolvimentoCientífico e Tecnológico Estado Da Bahia, Brasil. Acta Botanica Malacitana 23: 5-21. and(CNPq) graduation and Coordenação programs, de and Aperfeiçoamento to the UFERSA de for Pessoal technical de Nível and Superior (CAPES) for financial support granted to post-graduation scientific support. Citation: Acetabularia myriospora (Polyphysaceae, Chlorophyta) in the Figueiredo NCD, Gomes EL, Silva CGD, Henriques VMC (2017) First Record of Ceará State, Brazil. J Aquac Mar Biol 6(5): 00168. DOI: 10.15406/jamb.2017.06.00168.
Load more

Recommended publications
  • Syllabus of Msc Degree in Botany W.E.F. 2019-20
    UNIVERSITY OF KERALA THIRUVANANTHAPURAM M.Sc. Degree in Botany (Semester System) Revised Course Structure & Syllabus (w.e.f. 2019 Admissions) October 2018 PG BOARD OF STUDIES IN BOTANY UNIVERSITY OF KERALA M.Sc. Degree in Botany (Semester System) Revised Course structure Semes Paper Hours/ Hours / ESA Title of the Paper Maximum Marks ter Code semester week hours L P 3 CA ESA Total Phycology, Mycology, BO 211 108 6 2 3 25 75 100 Microbiology & Plant Pathology Bryophyta, Pteridophyta & I BO212 Gymnosperms 108 6 2 3 25 75 100 Histology, Reproductive Biology, BO213 Microtechnique & Histochemistry 108 6 3 3 25 75 100 BO214 Practical I 126 7 4 25♦ 75♦ Δ Total for Semester I 450 18 7 13 75 225 300 Taxonomy of Angiosperms, BO 221 Economic Botany & Ethnobotany 108 6 2.5 3 25 75 100 Environmental Biology, Forest BO 222 Botany, Phytogeography & 108 6 2 3 25 75 100 Conservation Biology II Cell Biology, Genetics & Evolution BO 223 108 6 2.5 3 25 75 100 Practical I 100♦ BO 224 Practical II 126 7 4 25 75 100 BO 225 Submission I* (I A+1B) 25+25 50 Total for Semester II 450 18 7 13 100 350 550 Plant Breeding, Horticulture & BO 231 108 6 1.5 3 25 75 100 Biostatistics Biochemistry, Plant Physiology BO 232 & Research Methodology 108 6 3 3 25 75 100 III Molecular Biology, Immunology & BO 233 108 6 2.5 3 25 75 100 Plant Biotechnology BO 234 Practical III 126 7 4 25♦♦ 75♦♦ Δ Δ Total for Semester III 450 18 7 13 75 225 300 Special Paper –I BO 241 Bioinformatics & Biophysics 144 8 2 3 25 75 100 BO 242 Special Paper –II Elective 144 8 5 3 25 75 100 Practical III 100♦♦ IV BO 243 Practical IV 126 7 4 25 75 100 BO 244 Dissertation 36 2 100 100 BO 245 Submissions II** 50 50 BO 246 Comprehensive Viva Voce 25 .
    [Show full text]
  • Plant Evolution Acetabularia Is a Genus of Green Algae
    Botany – Plant Evolution Acetabularia is a genus of green algae, specifically of the Polyphysaceae family. Typically found in subtropical waters, Acetabularia is a single- celled organism, but gigantic in size and complex in form, making it an excellent model organism for studying cell biology. The name, Acetabularia, derives from the Latin word acetabulum, a broad, shallow cup used for dipping bread; the upturned cap of Acetabularia resembles such a cup. For this reason, it is also sometimes called mermaid's wineglass.[6] Acetabularia was the first demonstration that genes are encoded by DNA in eukaryotes. Cladophora is a genus of reticulated filamentous Ulvophyceae (green algae). The genus Cladophora contains many species that are very hard to tell apart and classify, mainly because of the great variation in their appearances, which is affected by habitat, age and environmental conditions. Unlike Spirogyra the filaments of Cladophora branch and it doesn't undergo conjugation. They have swimming gametes instead. There are two multicellular stages in its life cycle - a haploid gametophyte and a diploid sporophyte - which look highly similar. The only way to tell the two stages apart is to either count their chromosomes, or examine their offspring. The haploid gametophyte produces haploid gametes by mitosis and the diploid sporophyte produces haploid spores by meiosis. The only visible difference between the gametes and spores of Cladophora is that the gametes have two flagella and the spores have four. Cladophora is an invahsive species damaging the fishing industry and shoreline property values along the Great Lakes in the United States Chara species are multicellular and superficially resemble land plants because of stem-like and leaf-like structures.
    [Show full text]
  • Plant Life Magill’S Encyclopedia of Science
    MAGILLS ENCYCLOPEDIA OF SCIENCE PLANT LIFE MAGILLS ENCYCLOPEDIA OF SCIENCE PLANT LIFE Volume 4 Sustainable Forestry–Zygomycetes Indexes Editor Bryan D. Ness, Ph.D. Pacific Union College, Department of Biology Project Editor Christina J. Moose Salem Press, Inc. Pasadena, California Hackensack, New Jersey Editor in Chief: Dawn P. Dawson Managing Editor: Christina J. Moose Photograph Editor: Philip Bader Manuscript Editor: Elizabeth Ferry Slocum Production Editor: Joyce I. Buchea Assistant Editor: Andrea E. Miller Page Design and Graphics: James Hutson Research Supervisor: Jeffry Jensen Layout: William Zimmerman Acquisitions Editor: Mark Rehn Illustrator: Kimberly L. Dawson Kurnizki Copyright © 2003, by Salem Press, Inc. All rights in this book are reserved. No part of this work may be used or reproduced in any manner what- soever or transmitted in any form or by any means, electronic or mechanical, including photocopy,recording, or any information storage and retrieval system, without written permission from the copyright owner except in the case of brief quotations embodied in critical articles and reviews. For information address the publisher, Salem Press, Inc., P.O. Box 50062, Pasadena, California 91115. Some of the updated and revised essays in this work originally appeared in Magill’s Survey of Science: Life Science (1991), Magill’s Survey of Science: Life Science, Supplement (1998), Natural Resources (1998), Encyclopedia of Genetics (1999), Encyclopedia of Environmental Issues (2000), World Geography (2001), and Earth Science (2001). ∞ The paper used in these volumes conforms to the American National Standard for Permanence of Paper for Printed Library Materials, Z39.48-1992 (R1997). Library of Congress Cataloging-in-Publication Data Magill’s encyclopedia of science : plant life / edited by Bryan D.
    [Show full text]
  • (Polyphysacea, Dasycladales, Chlorophyta), Mid
    Geologica Acta: an international earth science journal ISSN: 1695-6133 [email protected] Universitat de Barcelona España Granier, B.; Dias Brito, D.; Bucur, I. I. Clypeina tibanai, sp. nov. (Polyphysacea, Dasycladales, Chlorophyta), mid-Cretaceous green alga from the Potiguar Basin, Brazilian margin of the young South Atlantic Ocean Geologica Acta: an international earth science journal, vol. 12, núm. 3, julio-septiembre, 2014, pp. 227- 237 Universitat de Barcelona Barcelona, España Available in: http://www.redalyc.org/articulo.oa?id=50531655005 How to cite Complete issue Scientific Information System More information about this article Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Journal's homepage in redalyc.org Non-profit academic project, developed under the open access initiative Geologica Acta, Vol.12, Nº 3, September 2014, 227-237 DOI: 10.1344/GeologicaActa2014.12.3.5 Clypeina tibanai, sp. nov. (Polyphysacea, Dasycladales, Chlorophyta), mid-Cretaceous green alga from the Potiguar Basin, Brazilian margin of the young South Atlantic Ocean B. GRANIER1 D. DIAS-BRITO2 I.I. BUCUR3 1Department of Ecology and Evolutionary Biology, The University of Kansas 1200 Sunnyside Avenue, Lawrence, Kansas 66045 (USA). E-mail: [email protected] 2UNESP - Universidade Estadual Paulista, Center for Geosciences Applied to Petroleum (UNESPetro) and Departamento de Geologia Caixa Postal 178, Av. 24 A, n º 1515, Bela Vista, CEP13506-900 - Rio Claro -SP (Brazil) 3Babeş-Bolyai University, Department of Geology and Center for Integrated Geological Studies Str. M. Kogalniceanu nr.1, 400084 Cluj-Napoca (Romania) ABS TRACT The fossil genus Clypeina (Michelin, 1845) comprises some 40 species. We describe Clypeina tibanai, a new spe- cies from ? upper Albian–Cenomanian strata of the Potiguar Basin, Brazil, characterised by closely set verticils of tubular, bended laterals.
    [Show full text]
  • Plate. Acetabularia Schenckii
    Training in Tropical Taxonomy 9-23 July, 2008 Tropical Field Phycology Workshop Field Guide to Common Marine Algae of the Bocas del Toro Area Margarita Rosa Albis Salas David Wilson Freshwater Jesse Alden Anna Fricke Olga Maria Camacho Hadad Kevin Miklasz Rachel Collin Andrea Eugenia Planas Orellana Martha Cecilia Díaz Ruiz Jimena Samper Villareal Amy Driskell Liz Sargent Cindy Fernández García Thomas Sauvage Ryan Fikes Samantha Schmitt Suzanne Fredericq Brian Wysor From July 9th-23rd, 2008, 11 graduate and 2 undergraduate students representing 6 countries (Colombia, Costa Rica, El Salvador, Germany, France and the US) participated in a 15-day Marine Science Network-sponsored workshop on Tropical Field Phycology. The students and instructors (Drs. Brian Wysor, Roger Williams University; Wilson Freshwater, University of North Carolina at Wilmington; Suzanne Fredericq, University of Louisiana at Lafayette) worked synergistically with the Smithsonian Institution's DNA Barcode initiative. As part of the Bocas Research Station's Training in Tropical Taxonomy program, lecture material included discussions of the current taxonomy of marine macroalgae; an overview and recent assessment of the diagnostic vegetative and reproductive morphological characters that differentiate orders, families, genera and species; and applications of molecular tools to pertinent questions in systematics. Instructors and students collected multiple samples of over 200 algal species by SCUBA diving, snorkeling and intertidal surveys. As part of the training in tropical taxonomy, many of these samples were used by the students to create a guide to the common seaweeds of the Bocas del Toro region. Herbarium specimens will be contributed to the Bocas station's reference collection and the University of Panama Herbarium.
    [Show full text]
  • The Umbrella Algae's Crazy Caps
    Flashback_Cell Biology The umbrella algae’s crazy caps Acetabularia is several centimeters long – and consists of a single cell. Joachim Hämmerling from the Kaiser Wilhelm Institute for Biology in Berlin-Dahlem and Hans-Georg Schweiger from the Max Planck Institute for Cell Biology in Ladenburg dedicated most of their research life to the umbrella algae. One of their goals was to find out about the role of the nucleus. TEXT ELKE MAIER Berlin-Dahlem in 1931. It was a rather is regenerated time and time again. peculiar little plant that the biolo- The nucleus can be isolated and gist Joachim Hämmerling was con- transferred into another Acetabu- templating. It did not really look like laria fragment, even a foreign one, a plant at all, but more like an um- without losing its functionality. The brella or a small mushroom. A thin little plant was the perfect model stalk the length of a finger was organism to tackle fundamental equipped with a flat, ribbed cap on questions of cell biology. one end, and a root-like holdfast on In order to find out more about the other end which the plant used the function of the nucleus, Häm- to anchor itself to the substrate in merling removed the nucleus of a the surf zone of the sea. young specimen that had not yet Hämmerling’s object of study formed a cap. And lo and behold: was a type of umbrella algae known against all expectations the plant as Acetabularia mediterranea. From a Pioneers of cell biology: Joachim Hämmerling (left) did not die – quite the contrary.
    [Show full text]
  • Neoproterozoic Origin and Multiple Transitions to Macroscopic Growth in Green Seaweeds
    bioRxiv preprint doi: https://doi.org/10.1101/668475; this version posted June 12, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder. All rights reserved. No reuse allowed without permission. 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, Pavel Škaloudf, Charles F. Delwicheg, Andrew H. Knollh, John A. Raveni,j,k, Heroen Verbruggene, Klaas Vandepoeleb,c,d,1,2, Olivier De Clercka,1,2 Frederik Leliaerta,l,1,2 aDepartment of Biology, Phycology Research Group, Ghent University, Krijgslaan 281, 9000 Ghent, Belgium bDepartment of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, 9052 Zwijnaarde, Belgium cVIB Center for Plant Systems Biology, Technologiepark 71, 9052 Zwijnaarde, Belgium dBioinformatics Institute Ghent, Ghent University, Technologiepark 71, 9052 Zwijnaarde, Belgium eSchool of Biosciences, University of Melbourne, Melbourne, Victoria, Australia fDepartment of Botany, Faculty of Science, Charles University, Benátská 2, CZ-12800 Prague 2, Czech Republic gDepartment of Cell Biology and Molecular Genetics, University of Maryland, College Park, MD 20742, USA hDepartment of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts, 02138, USA. iDivision of Plant Sciences, University of Dundee at the James Hutton Institute, Dundee, DD2 5DA, UK jSchool of Biological Sciences, University of Western Australia (M048), 35 Stirling Highway, WA 6009, Australia kClimate Change Cluster, University of Technology, Ultimo, NSW 2006, Australia lMeise Botanic Garden, Nieuwelaan 38, 1860 Meise, Belgium 1To whom correspondence may be addressed. Email [email protected], [email protected], [email protected] or [email protected].
    [Show full text]
  • H+-Pumping Rhodopsin from the Marine Alga Acetabularia
    View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Elsevier - Publisher Connector Biophysical Journal Volume 91 August 2006 1471–1479 1471 H1-Pumping Rhodopsin from the Marine Alga Acetabularia Satoshi P. Tsunoda,* David Ewers,y Sabrina Gazzarrini,z Anna Moroni,z Dietrich Gradmann,y and Peter Hegemann* *Experimentelle Biophysik, Fachbereich fu¨r Biologie, Humboldt-Universita¨t zu Berlin, 10115 Berlin, Germany; yA.-v.-Haller-Institut der Universita¨t, 37073 Go¨ttingen, Germany; and zDipartimento di Biologia and Consiglio Nazionale delle Ricerche Istituto di Biofisica, Universita` degli Studi di Milano, 20133 Milan, Italy ABSTRACT An opsin-encoding cDNA was cloned from the marine alga Acetabularia acetabulum. The cDNA was expressed in Xenopus oocytes into functional Acetabularia rhodopsin (AR) mediating H1 carried outward photocurrents of up to 1.2 mA with an action spectrum maximum at 518 nm (AR518). AR is the first ion-pumping rhodopsin found in a plant organism. Steady- state photocurrents of AR are always positive and rise sigmoidally from negative to positive transmembrane voltages. Numerous kinetic details (amplitudes and time constants), including voltage-dependent recovery of the dark state after light-off, are documented with respect to their sensitivities to light, internal and external pH, and the transmembrane voltage. The results are analyzed by enzyme kinetic formalisms using a simplified version of the known photocycle of bacteriorhodopsin (BR). Blue- 1 light causes a shunt of the photocycle under H reuptake from the extracellular side. Similarities and differences of AR with BR are pointed out. This detailed electrophysiological characterization highlights voltage dependencies in catalytic membrane processes of this eukaryotic, H1-pumping rhodopsin and of microbial-type rhodopsins in general.
    [Show full text]
  • BMC Evolutionary Biology Biomed Central
    BMC Evolutionary Biology BioMed Central Research article Open Access Complex distribution of EFL and EF-1α proteins in the green algal lineage Geoffrey P Noble, Matthew B Rogers and Patrick J Keeling* Address: Canadian Institute for Advanced Research, Department of Botany, University of British Columbia, 3529-6270 University Boulevard, Vancouver, BC V6T 1Z4, Canada Email: Geoffrey P Noble - [email protected]; Matthew B Rogers - [email protected]; Patrick J Keeling* - [email protected] * Corresponding author Published: 23 May 2007 Received: 5 February 2007 Accepted: 23 May 2007 BMC Evolutionary Biology 2007, 7:82 doi:10.1186/1471-2148-7-82 This article is available from: http://www.biomedcentral.com/1471-2148/7/82 © 2007 Noble et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract Background: EFL (or elongation factor-like) is a member of the translation superfamily of GTPase proteins. It is restricted to eukaryotes, where it is found in a punctate distribution that is almost mutually exclusive with elongation factor-1 alpha (EF-1α). EF-1α is a core translation factor previously thought to be essential in eukaryotes, so its relationship to EFL has prompted the suggestion that EFL has spread by horizontal or lateral gene transfer (HGT or LGT) and replaced EF-1α multiple times. Among green algae, trebouxiophyceans and chlorophyceans have EFL, but the ulvophycean Acetabularia and the sister group to green algae, land plants, have EF-1α.
    [Show full text]
  • Acetabularia Acetabulum
    Plant Cell Physiol. 48(1): 122–133 (2007) doi:10.1093/pcp/pcl053, available online at www.pcp.oxfordjournals.org ß The Author 2006. Published by Oxford University Press on behalf of Japanese Society of Plant Physiologists. All rights reserved. For permissions, please email: [email protected] Spectroscopic and Biochemical Analysis of Regions of the Cell Wall of the Unicellular ‘Mannan Weed’, Acetabularia acetabulum Erin K. Dunn 1, 5, Douglas A. Shoue 2, 5, Xuemei Huang 3, Raymond E. Kline 4, Alex L. MacKay 3, Nicholas C. Carpita 2, Iain E.P. Taylor 4 and Dina F. Mandoli 1,Ã 1 Department of Biology, Center for Developmental Biology & Institute for Stem Cell and Regenerative Medicine, Box 35325, University of Washington, Seattle, WA 98195-5325, USA 2 Department of Botany and Plant Pathology, Purdue University, W. Lafayette, Indiana 47907-2054, USA 3 Department of Physics and Astronomy, University of British Columbia, Vancouver, BC, Canada V6T 1Z1 4 Department of Botany, University of British Columbia, Vancouver, BC, Canada V6T 1Z4 Downloaded from https://academic.oup.com/pcp/article/48/1/122/2469303 by guest on 29 September 2021 Although the Dasycladalean alga Acetabularia acetabulum Introduction has long been known to contain mannan-rich walls, it is not known to what extent wall composition varies as a function of The Mediterranean coralline alga Acetabularia the elaborate cellular differentiation of this cell, nor has it acetabulum (previously classified as A. mediterranea)isa been determined what other polysaccharides
    [Show full text]
  • Session 2019-20
    S.N. CONTENTS Page 1. Taxonomy 1 2. H Taxonomy 10 3. K M 14 4. K Protista 32 5. K Fungi 37 6. P Kngdom 53 A. A 53 B. B 62 C. Pteridophyta 66 D. Gymnosperms 71 7. Eerci-I (Cceptua Qti) 83 RLD 8. Eer-II (Previou Y Qestio)2019-20100 9. Eer-III (Analytica Q) 118 10. Eer-IV (Asser & R) 128 11. Virus 132 12. Lchen 135 13. MrrhizaSession 137 14. T World 138 E ALLEN NEET SYLLABUS DIVERSITY IN LIVING WORLD : What is living? ; Biodiversity; Need for classification; Three domains of life; Taxonomy & Systematics; Concept of species and taxonomical hierarchy; Binomial nomenclature; Tools for study of Taxonomy – Museums, Zoos, Herbaria, Botanical gardens. Five kingdom classification; salient features and classification of Monera; Protista and Fungi into major groups; Lichens; Viruses and Viroids. Salient features and classification of plants into major groups-Algae, Bryophytes, Pteridophytes, Gymnosperms and Angiosperms (three to five salient and distinguishing features and at least two examples of each category); Angiosperms- classification up to class, characteristic features and examples). Aristotle (384-322 BC) He was a Greek philosopher and scientist born in the city of Stagira, Chalkidice of classical Greece. His father died when Aristotle was a child. At eighteen, he joined Plato's Academy in Athens and remained there until the age of thirty seven (c.347 BC). His writings cover many subjects including physics, biology, zoology, metaphysics, poetry, politics and government. Shortly after Plato died, Aristotle left Athens and, at the request of Philip of Macedon, tutored Alexander the Great. Aristotle was the first genuine scientist in history and every scientist is in his debt.He is regarded as father of biology and zoology.
    [Show full text]
  • Genome of an Acetabularia Mediterranea Strain (Southern Blot/Molecular Cloning/Dasycladaceae/Evolution) MARTIN J
    Proc. Natl. Acad. Sci. USA Vol. 82, pp. 1706-1710, March 1985 Cell Biology Tandemly repeated nonribosomal DNA sequences in the chloroplast genome of an Acetabularia mediterranea strain (Southern blot/molecular cloning/Dasycladaceae/evolution) MARTIN J. TYMMS AND HANS-GEORG SCHWEIGER Max-Planck-Institut fur Zellbiologie, D-6802 Ladenburg, Federal Republic of Germany Communicated by Philip Siekevitz, October 29, 1984 ABSTRACT A purified chloroplast fraction was prepared the life cycle and that are not homologous to heterologous from caps of the giant unicellular green alga Acetabularia probes for ribosomal RNA genes. mediterranea (strain 17). High molecular weight DNA obtained from these chloroplasts contains at least five copies of a MATERIALS AND METHODS 10-kilobase-pair (kbp) sequence tandemly arranged. This Preparation of Chloroplasts. A. mediterranea was grown in unique sequence is present in DNA from chloroplasts of all Muller's medium as described (for references, see ref. 9). stages of the life cycle examined. A chloroplast rDNA clone Cells of three different stages, 1 cm long, 3.5 cm long (i.e., from mustard hybridized with some restriction fragments just prior to cap formation), and fully developed caps (9) from Acetabularia chloroplast DNA but not with the repeated were studied. sequence. An 8-kbp EcoRI-.Pst I fragment of the repeated Caps from A. mediterranea cells were harvested prior to sequence was cloned into pBR322 and used as a hybridization the formation of secondary nuclei. Five-thousand caps probe. No homology was found between the cloned 8-kbp ('100 g) were homogenized in a blender fitted with razor sequence and chloroplast DNA from related species blades on a vertical shaft in 1 liter of ice-cold buffer A Acetabularia crenulata or chloroplast DNA from spinach.
    [Show full text]