A Close-Up View on ITS2 Evolution and Speciation
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Flagellar, Cellular and Organismal Polarity in Volvox Carteri
SUNY Geneseo KnightScholar Biology Faculty/Staff Works Department of Biology 1993 Flagellar, cellular and organismal polarity in Volvox carteri Harold J. Hoops SUNY Geneseo Follow this and additional works at: https://knightscholar.geneseo.edu/biology Recommended Citation Hoops H.J. (1993) Flagellar, cellular and organismal polarity in Volvox carteri. Journal of Cell Science 104: 105-117. doi: This Article is brought to you for free and open access by the Department of Biology at KnightScholar. It has been accepted for inclusion in Biology Faculty/Staff Works by an authorized administrator of KnightScholar. For more information, please contact [email protected]. Journal of Cell Science 104, 105-117 (1993) 105 Printed in Great Britain © The Company of Biologists Limited 1993 Flagellar, cellular and organismal polarity in Volvox carteri Harold J. Hoops Department of Biology, 1 Circle Drive, SUNY-Genesco, Genesco, NY 14454, USA SUMMARY It has previously been shown that the flagellar appara- reorientation of flagellar apparatus components. This tus of the mature Volvox carteri somatic cell lacks the reorientation also results in the movement of the eye- 180˚ rotational symmetry typical of most unicellular spot from a position nearer one of the flagellar bases to green algae. This asymmetry has been postulated to be a position approximately equidistant between them. By the result of rotation of each half of the flagellar appa- analogy to Chlamydomonas, the anti side of the V. car - ratus. Here it is shown that V. carteri axonemes contain teri somatic cell faces the spheroid anterior, the syn side polarity markers that are similar to those found in faces the spheroid posterior. -
Algal Sex Determination and the Evolution of Anisogamy James Umen, Susana Coelho
Algal Sex Determination and the Evolution of Anisogamy James Umen, Susana Coelho To cite this version: James Umen, Susana Coelho. Algal Sex Determination and the Evolution of Anisogamy. Annual Review of Microbiology, Annual Reviews, 2019, 73 (1), 10.1146/annurev-micro-020518-120011. hal- 02187088 HAL Id: hal-02187088 https://hal.sorbonne-universite.fr/hal-02187088 Submitted on 17 Jul 2019 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. Annu. Rev. Microbiol. 2019. 73:X–X https://doi.org/10.1146/annurev-micro-020518-120011 Copyright © 2019 by Annual Reviews. All rights reserved Umen • Coelho www.annualreviews.org • Algal Sexes and Mating Systems Algal Sex Determination and the Evolution of Anisogamy James Umen1 and Susana Coelho2 1Donald Danforth Plant Science Center, St. Louis, Missouri 63132, USA; email: [email protected] 2Sorbonne Université, UPMC Université Paris 06, CNRS, Algal Genetics Group, UMR 8227, Integrative Biology of Marine Models, Station Biologique de Roscoff, CS 90074, F-29688, Roscoff, France [**AU: Please write the entire affiliation in French or write it all in English, rather than a combination of English and French**] ; email: [email protected] Abstract Algae are photosynthetic eukaryotes whose taxonomic breadth covers a range of life histories, degrees of cellular and developmental complexity, and diverse patterns of sexual reproduction. -
Uncovering Unique Green Algae and Cyanobacteria Isolated from Biocrusts in Highly Saline Potash Tailing Pile Habitats, Using an Integrative Approach
microorganisms Article Uncovering Unique Green Algae and Cyanobacteria Isolated from Biocrusts in Highly Saline Potash Tailing Pile Habitats, Using an Integrative Approach Veronika Sommer 1,2, Tatiana Mikhailyuk 3, Karin Glaser 1 and Ulf Karsten 1,* 1 Institute for Biological Sciences, Applied Ecology and Phycology, University of Rostock, 18059 Rostock, Germany; [email protected] (V.S.); [email protected] (K.G.) 2 upi UmweltProjekt Ingenieursgesellschaft mbH, 39576 Stendal, Germany 3 National Academy of Sciences of Ukraine, M.G. Kholodny Institute of Botany, 01601 Kyiv, Ukraine; [email protected] * Correspondence: [email protected] Received: 4 September 2020; Accepted: 22 October 2020; Published: 27 October 2020 Abstract: Potash tailing piles caused by fertilizer production shape their surroundings because of the associated salt impact. A previous study in these environments addressed the functional community “biocrust” comprising various micro- and macro-organisms inhabiting the soil surface. In that previous study, biocrust microalgae and cyanobacteria were isolated and morphologically identified amongst an ecological discussion. However, morphological species identification maybe is difficult because of phenotypic plasticity, which might lead to misidentifications. The present study revisited the earlier species list using an integrative approach, including molecular methods. Seventy-six strains were sequenced using the markers small subunit (SSU) rRNA gene and internal transcribed spacer (ITS). Phylogenetic analyses confirmed some morphologically identified species. However, several other strains could only be identified at the genus level. This indicates a high proportion of possibly unknown taxa, underlined by the low congruence of the previous morphological identifications to our results. In general, the integrative approach resulted in more precise species identifications and should be considered as an extension of the previous morphological species list. -
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. -
2004 University of Connecticut Storrs, CT
Welcome Note and Information from the Co-Conveners We hope you will enjoy the NEAS 2004 meeting at the scenic Avery Point Campus of the University of Connecticut in Groton, CT. The last time that we assembled at The University of Connecticut was during the formative years of NEAS (12th Northeast Algal Symposium in 1973). Both NEAS and The University have come along way. These meetings will offer oral and poster presentations by students and faculty on a wide variety of phycological topics, as well as student poster and paper awards. We extend a warm welcome to all of our student members. The Executive Committee of NEAS has extended dormitory lodging at Project Oceanology gratis to all student members of the Society. We believe this shows NEAS members’ pride in and our commitment to our student members. This year we will be honoring Professor Arthur C. Mathieson as the Honorary Chair of the 43rd Northeast Algal Symposium. Art arrived with his wife, Myla, at the University of New Hampshire in 1965 from California. Art is a Professor of Botany and a Faculty in Residence at the Jackson Estuarine Laboratory of the University of New Hampshire. He received his Bachelor of Science and Master’s Degrees at the University of California, Los Angeles. In 1965 he received his doctoral degree from the University of British Columbia, Vancouver, Canada. Over a 43-year career Art has supervised many undergraduate and graduate students studying the ecology, systematics and mariculture of benthic marine algae. He has been an aquanaut-scientist for the Tektite II and also for the FLARE submersible programs. -
Phylogenetic Analysis and Substitution Rate Estimation of Colonial Volvocine Algae Based on Mitochondrial Genomes
G C A T T A C G G C A T genes Article Phylogenetic Analysis and Substitution Rate Estimation of Colonial Volvocine Algae Based on Mitochondrial Genomes Yuxin Hu 1,2, Weiyue Xing 1,2, Zhengyu Hu 3 and Guoxiang Liu 1,* 1 Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; [email protected] (Y.H.); [email protected] (W.X.) 2 School of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China 3 State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; [email protected] * Correspondence: [email protected]; Tel.: +86-027-6878-0576 Received: 11 December 2019; Accepted: 15 January 2020; Published: 20 January 2020 Abstract: We sequenced the mitochondrial genome of six colonial volvocine algae, namely: Pandorina morum, Pandorina colemaniae, Volvulina compacta, Colemanosphaera angeleri, Colemanosphaera charkowiensi, and Yamagishiella unicocca. Previous studies have typically reconstructed the phylogenetic relationship between colonial volvocine algae based on chloroplast or nuclear genes. Here, we explore the validity of phylogenetic analysis based on mitochondrial protein-coding genes. Wefound phylogenetic incongruence of the genera Yamagishiella and Colemanosphaera. In Yamagishiella, the stochastic error and linkage group formed by the mitochondrial protein-coding genes prevent phylogenetic analyses from reflecting the true relationship. In Colemanosphaera, a different reconstruction approach revealed a different phylogenetic relationship. This incongruence may be because of the influence of biological factors, such as incomplete lineage sorting or horizontal gene transfer. We also analyzed the substitution rates in the mitochondrial and chloroplast genomes between colonial volvocine algae. -
The Genome of Prasinoderma Coloniale Unveils the Existence of a Third Phylum Within Green Plants
Downloaded from orbit.dtu.dk on: Oct 10, 2021 The genome of Prasinoderma coloniale unveils the existence of a third phylum within green plants Li, Linzhou; Wang, Sibo; Wang, Hongli; Sahu, Sunil Kumar; Marin, Birger; Li, Haoyuan; Xu, Yan; Liang, Hongping; Li, Zhen; Cheng, Shifeng Total number of authors: 24 Published in: Nature Ecology & Evolution Link to article, DOI: 10.1038/s41559-020-1221-7 Publication date: 2020 Document Version Publisher's PDF, also known as Version of record Link back to DTU Orbit Citation (APA): Li, L., Wang, S., Wang, H., Sahu, S. K., Marin, B., Li, H., Xu, Y., Liang, H., Li, Z., Cheng, S., Reder, T., Çebi, Z., Wittek, S., Petersen, M., Melkonian, B., Du, H., Yang, H., Wang, J., Wong, G. K. S., ... Liu, H. (2020). The genome of Prasinoderma coloniale unveils the existence of a third phylum within green plants. Nature Ecology & Evolution, 4, 1220-1231. https://doi.org/10.1038/s41559-020-1221-7 General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. Users may download and print one copy of any publication from the public portal for the purpose of private study or research. You may not further distribute the material or use it for any profit-making activity or commercial gain You may freely distribute the URL identifying the publication in the public portal If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. -
Benthic Marine Algae on Japanese Tsunami Marine Debris – a Morphological Documentation of the Species
Benthic Marine Algae on Japanese Tsunami Marine Debris – a morphological documentation of the species Gayle I. Hansen ([email protected]), Oregon State University, USA With DNA determinations by Takeaki Hanyuda ([email protected]) & Hiroshi Kawai ([email protected]), Kobe University, Japan Copyright: 2017, CC BY-NC (attribution, non-commercial use). For photographs, please credit G.I. Hansen or those noted on the pictures. Printing: For better pdf printing, please reduce to letter (11” x 8.5”) size, landscape orientation. Citations to be used for this series: Hansen, G.I., Hanyuda, T. & Kawai, H. (2017). Benthic marine algae on Japanese tsunami marine debris – a morphological documentation of the species. Part 1 – The tsunami event, the project overview, and the red algae. OSU Scholars Archive, Corvallis, pp. 1-50. http://dx.doi.org/10.5399/osu/1110 Hansen, G.I., Hanyuda, T. & Kawai, H. (2017). Benthic marine algae on Japanese tsunami marine debris – a morphological documentation of the species. Part 2. The brown algae. OSU Scholars Archive, Corvallis, pp. 1-61. http://dx.doi.org/10.5399/osu/1111 Hansen, G.I., Hanyuda, T. & Kawai, H. (2017). Benthic marine algae on Japanese tsunami marine debris – a morphological documentation of the species. Part 3. The green algae and cyanobacteria. OSU Scholars Archive, Corvallis. pp. 1-43. http://dx.doi.org/10.5399/osu/1112 Other publications supported: The Scholars Archive presentations above provide photographic documentation for the species included in the following publications. The poster is a pictorial overview of some of the larger debris algae made for teaching. -
Some Freshwater Green Algae of Raja-Rani Wetland, Letang, Morang: New for Nepal
2020J. Pl. Res. Vol. 18, No. 1, pp 6-26, 2020 Journal of Plant Resources Vol.18, No. 1 Some Freshwater Green Algae of Raja-Rani Wetland, Letang, Morang: New for Nepal Shiva Kumar Rai1*, Kalpana Godar1and Sajita Dhakal2 1Phycology Research Lab, Department of Botany, Post Graduate Campus, Tribhuvan University, Biratnagar, Nepal 2National Herbarium and Plant Laboratories, Department of Plant Resources, Godawari, Lalitpur, Nepal *E-mail: [email protected] Abstract Freshwater green alga of Raja-Rani wetland has been studied. A total 36 algal samples were collected from 12 sites by squeezing the submerged aquatic plants. Present paper describes 35 green algae under 18 genera from Raja-Rani wetland as new record for Nepal.Genus Euastrum consists 5 species; genera Cosmarium, Staurodesmus, and Staurastrum consist 4 species each; genera Scenedesmus, Closterium, Pleurotaeniuum and Xanthidium consist 2 species each; and rest genera consist only single taxa each. Water parameters of the wetland of winter, summer and rainy seasons were also recorded. Keywords: Chlorophyceae, Cosmarium, New report, Staurodesmus, Triploceras,Xanthidium Introduction climatic condition and rich aquatic habitats for algae, extensive exploration is lacking in the history.Suxena Algae are the simplest photosynthetic thalloid plants, & Venkateswarlu (1968), Hickel (1973), Joshi usually inhabited in water and moist environment (1979), Subba Raju & Suxena (1979), Shrestha & throughout the world. Green algae are the largest Manandhar (1983), Hirano (1984), Ishida (1986), and most diverse group of algae, with about 8000 Watanabe & Komarek (1988), Haga & Legahri species known (Guiry, 2012). They have wide range (1993), Watanabe (1995), Baral (1996, 1999), Das of habitats as they grow in freshwater, marine, & Verma (1996), Prasad (1996), Komarek & subaerial, terrestrial, epiphytic, endophytic, parasitic, Watanabe (1998), Simkhada et al. -
Compartmentalization of Mrnas in the Giant, Unicellular Green Algae
bioRxiv preprint doi: https://doi.org/10.1101/2020.09.18.303206; this version posted September 18, 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 Compartmentalization of mRNAs in the giant, 2 unicellular green algae Acetabularia acetabulum 3 4 Authors 5 Ina J. Andresen1, Russell J. S. Orr2, Kamran Shalchian-Tabrizi3, Jon Bråte1* 6 7 Address 8 1: Section for Genetics and Evolutionary Biology, Department of Biosciences, University of 9 Oslo, Kristine Bonnevies Hus, Blindernveien 31, 0316 Oslo, Norway. 10 2: Natural History Museum, University of Oslo, Oslo, Norway 11 3: Centre for Epigenetics, Development and Evolution, Department of Biosciences, University 12 of Oslo, Kristine Bonnevies Hus, Blindernveien 31, 0316 Oslo, Norway. 13 14 *Corresponding author 15 Jon Bråte, [email protected] 16 17 Keywords 18 Acetabularia acetabulum, Dasycladales, UMI, STL, compartmentalization, single-cell, mRNA. 19 20 Abstract 21 Acetabularia acetabulum is a single-celled green alga previously used as a model species for 22 studying the role of the nucleus in cell development and morphogenesis. The highly elongated 23 cell, which stretches several centimeters, harbors a single nucleus located in the basal end. 24 Although A. acetabulum historically has been an important model in cell biology, almost 25 nothing is known about its gene content, or how gene products are distributed in the cell. To 26 study the composition and distribution of mRNAs in A. -
Seaweeds of California Green Algae
PDF version Remove references Seaweeds of California (draft: Sun Nov 24 15:32:39 2019) This page provides current names for California seaweed species, including those whose names have changed since the publication of Marine Algae of California (Abbott & Hollenberg 1976). Both former names (1976) and current names are provided. This list is organized by group (green, brown, red algae); within each group are genera and species in alphabetical order. California seaweeds discovered or described since 1976 are indicated by an asterisk. This is a draft of an on-going project. If you have questions or comments, please contact Kathy Ann Miller, University Herbarium, University of California at Berkeley. [email protected] Green Algae Blidingia minima (Nägeli ex Kützing) Kylin Blidingia minima var. vexata (Setchell & N.L. Gardner) J.N. Norris Former name: Blidingia minima var. subsalsa (Kjellman) R.F. Scagel Current name: Blidingia subsalsa (Kjellman) R.F. Scagel et al. Kornmann, P. & Sahling, P.H. 1978. Die Blidingia-Arten von Helgoland (Ulvales, Chlorophyta). Helgoländer Wissenschaftliche Meeresuntersuchungen 31: 391-413. Scagel, R.F., Gabrielson, P.W., Garbary, D.J., Golden, L., Hawkes, M.W., Lindstrom, S.C., Oliveira, J.C. & Widdowson, T.B. 1989. A synopsis of the benthic marine algae of British Columbia, southeast Alaska, Washington and Oregon. Phycological Contributions, University of British Columbia 3: vi + 532. Bolbocoleon piliferum Pringsheim Bryopsis corticulans Setchell Bryopsis hypnoides Lamouroux Former name: Bryopsis pennatula J. Agardh Current name: Bryopsis pennata var. minor J. Agardh Silva, P.C., Basson, P.W. & Moe, R.L. 1996. Catalogue of the benthic marine algae of the Indian Ocean. -
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.