A Brief History of Taxonomy Biological Classification

Total Page:16

File Type:pdf, Size:1020Kb

A Brief History of Taxonomy Biological Classification TAXONOMY THE TREE OF LIFE EUKARYOTA This domain includes all of the plants, animals, and fungi, and some single-celled organisms. Eukaryotes are distinguished by their complex cells, which contain a membrane-enclosed nucleus. Humans Homo sapiens The creatures most familiar to us, Our species, primates in the animals, are members of the Animalia kingdom of the Animalia same kingdom. Eukaryota, is thought to have Fungi Mosquito Red first evolved in Africa about Pufferfish Junglefowl Roundworm Mouse 200,000 years ago. Genetically, Amoebozoa Chimpanzee our closest living relative Plantae is the chimpanzee. Archaeplastida Schizosaccharomyces pombe ARCHAEA Saccharomyces cerevisiae BACTERIA Caenorhabditis briggsae Caenorhabditis elegans Eremothecium gossypii These single-celled prokaryotic organisms often Chromalveolata Dictyostelium discoideum These single-celled prokaryotic organisms were among Cyanidioschyzon merolae live in extreme environmental conditions. Once Excavata Arabidopsis thaliana the first life forms to appear on Earth. Often spherical, Plasmodium falciparum considered to be Bacteria, these microorganisms Cryptosporidium hominis rod-like, or spiral in shape, these microorganisms Thalassiosira pseudonana Oryza sativa Anopheles gambiae Drosophila melanogaster Takifugu rubripes Danio rerio are now recognized as a separate domain of life. Gallus gallus function without a membrane-enclosed cell nucleus. Rattus norvegicus Mus musculus Methanococcus jannaschii Leishmania major Homo sapiens Pan troglodytes Methanococcus maripaludi Thermoanaerobacter tengcongensis Giardia lamblia Clostridium acetobutylicum Clostridium tetani Methanopyrus kandleri Clostridium perfringens Candidatus Phytoplasma asteris thermautotrophicumMethanobacterium Mycoplasma mycoides Mycoplasma mobile Pyrococcus abyssi Pyrococcus furiosus Pyrococcus furiosus Pyrococcus horikoshii Mycoplasma pulmonis Ureaplasma parvum Anthrax This species of Archaea, found Mycoplasma penetrans Bacillus anthracis Methanosarcina mazei in extremely hot conditions near Methanosarcina acetivorans Mycoplasma gallissepticum hydrothermal vents, thrives at This deadly bacteria infected Mycoplasma pneumoniae temperatures between 158°F and Halobacterium sp. NRC−1 hundreds of thousands of Mycoplasma genitalium 217°F (70°-100°C). In addition to people and animals every its unique habitat, P. furiosus is Archaeoglobus fulgidus Staphylococcus epidermidis year until a vaccine was Thermoplasma acidophilum also unusual for having enzymes Staphylococcus aureus MW2 developed by Louis HOMINIDS containing tungsten, a very rare Great Apes Pasteur in 1881. Thermoplasma volcanium Staphylococcus aureus N315 element in living organisms. Staphylococcus aureus Mu50 Sulfolobus solfataricus Listeria innocua Sulfolobus tokodaii Listeria monocytogenes F2365 Listeria monocytogenes EGD-e Aeropyrum pernix Pyrobaculum aerophilum Oceanobacillus iheyensis Nanoarchaeum equitans Bacillus halodurans Bacillus subtilis Shigella flexneri 2a 301 Shigella flexneri 2a 2457T Bacillus anthracis Bacillus cereus ATCC 14579 Escherichia coli K12 Bacillus cereus ATCC 10987 Escherichia coli O6 Lactobacillus johnsonii Escherichia coli O157:H7 Lactobacillus plantarum Escherichia coli EDL933 Enterococcus faecalis Salmonella typhi Lactococcus lactis Salmonella enterica Streptococcus pneumoniae R6 Salmonella typhimurium Streptococcus pneumoniae TIGR4 Streptococcus mutans Yersinia pestis CO92 Streptococcus agalactiae II Yersinia pestis KIM Streptococcus agalactiae Yersinia pestis Medievalis Streptococcus pyogenes M1 Photorhabdus luminescens Streptococcus pyogenes MGAS8232 Buchnera aphidicola Sg Streptococcus pyogenes MGAS315 Buchnera aphidicola APS Streptococcus pyogenes SSI−1 Buchnera aphidicola Bp Fibrobacter succinogenes Wigglesworthia brevipalpis Chlorobium tepidum Blochmannia floridanus LUCA Porphyromonas gingivalis LAST UNIVERSAL COMMON ANCESTOR Haemophilus influenzae Bacteroides thetaiotaomicron A single-celled organism living more than 3.5 BYA. Pasteurella multocida Chlamydia muridarum Haemophilus ducreyi Chlamydia trachomatis Chlamydophila caviae Vibrio vulnificus CMCP6 Chlamydophila pneumoniae TW183 Vibrio vulnificus YJ016 Chlamydophila pneumoniae J138 Vibrio parahaemolyticus Chlamydophila pneumoniae CWL02 Vibrio cholerae Chlamydophila pneumoniae AR39 Photobacterium profundum Gemmata obscuriglobus Shewanella oneidensis Rhodopirellula baltica Pseudomonas syringae Leptospira interrogans L1−130 Pseudomonas putida Leptospira interrogans 56601 Borrelia burgdorferi Pseudomonas aeruginosa Treponema pallidum Xanthomonas campestris Treponema denticola Xanthomonas axonopodis Bifidobacterium longum Xylella fastidiosa 9a5c Tropheryma whipplei TW08/27 Xylella fastidiosa 700964 Coxiella burnetii Tropheryma whipplei Twist Streptomyces avermitilis Bordetella bronchiseptica Streptomyces coelicolor Corynebacterium diphtheriae Bordetella parapertussis Bordetella pertussis Corynebacterium efficiens Corynebacterium glutamicum ATCC 13032 Ralstonia solanacearum Corynebacterium glutamicum Neisseria meningitidis B Mycobacterium paratuberculosis Neisseria meningitidis A Mycobacterium leprae Mycobacterium bovis Chromobacterium violaceum Mycobacterium tuberculosis CDC1551 Nitrosomonas europaea Brucella melitensisBrucella suis Mycobacterium tuberculosis H37Rv Fusobacterium nucleatum Rhizobium loti WashU Aquifex aeolicus Thermotoga maritima C58 Cereon Dehalococcoides ethenogenes Thermus thermophilus Deinococcus radiodurans This phylogenetic tree of life Agrobacterium tumefaciens Rhizobium meliloti Gloeobacter violaceus Synechococcus elongatus Agrobacterium tumefaciens uses genome sequencing data to Nostoc sp. PCC 712 Synechocystis sp. PCC6803 map the relationships between Prochlorococcus marinus CCMP1378 Prochlorococcus marinus SS12 Bradyrhizobium japonicum Synechococcus sp. WH8102 Prochlorococcus marinus MIT9313 Acidobacterium capsulatum Solibacter usitatus 191 different species in the three Rickettsia conorii Caulobacter crescentus Rhodopseudomonas palustris domains of life: Eukaryota, Rickettsia prowazekii Wolbachia sp. wMel Bacteria, and Archaea. Helicobacter pylori J99 Helicobacter pylori 26695 Helicobacter hepaticus Campylobacter jejuni All life on Earth shares one Wolinella succinogenes Desulfovibrio vulgaris common ancestor, and is thought Bdellovibrio bacteriovorus Geobacter sulfurreducens to include between 10 million and 30 million different species. http://itol.embl.de/ A BRIEF HISTORY OF TAXONOMY 1977 BIOLOGICAL CLASSIFICATION American microbiologist Carl Taxonomy is the science of naming and classifying different life forms. Oral traditions of taxonomy Woese defines the Archaea Scientists refer to a specific life form using its predate writing and were first used when human ancestors described different food sources, predators, as separate domain of life, Genus and species classifications. This naming and medicinal or poisonous plants. The advent of writing enabled more detailed, recorded taxonomies. introducing the three-domain technique is called binomial nomenclature. system used today. Domain ASIAN ELEPHANT BCE 3000 2000 1000 1500 1600 1700 1800 1900 2000 Kingdom Eukaryota Phylum Animalia Chordata 3000 BCE 1500 BCE 384 - 322 BCE 1516 - 1565 1656 - 1708 1707 - 1778 Class Mammalia Chinese Emperor Shen Egyptian wall paintings Greek philosopher Swiss scholar Conrad French botanist Joseph Swedish botanist Carl Proboscidea Nung tests hundreds and preserved scrolls Aristotle launches the von Gesner publishes a Pitton de Tournefort Linnaeus publishes The Order Elephantidae of herbs for medicinal classify different plant western tradition of five-volume compendium classifies about 9,000 System of Nature in 1735, Elephas value. species by name. taxonomy by classifying of then-known life forms species in 698 genera. becoming the father of Family Maximus plants and animals by their in the 1550s. modern taxonomy. Linnaeus size, habitat, and methods placed humans among the Genus of reproduction. primates and used binomial Elephas maximus nomenclature to classify us Species as Homo sapiens. GENUS SPECIES.
Recommended publications
  • Title Genomic Analysis of the Marine Hyperthermophilic Archaeon
    Genomic analysis of the marine hyperthermophilic archaeon Title Aeropyrum( Digest_要約 ) Author(s) Daifuku, Takashi Citation 京都大学 Issue Date 2015-03-23 URL https://doi.org/10.14989/doctor.k19034 学位規則第9条第2項により要約公開; 許諾条件により本文 Right は2019-08-01に公開 Type Thesis or Dissertation Textversion ETD Kyoto University Summary The increasing number of genome sequences of archaea and bacteria leads to show their adaptation to different environmental conditions at the genomic level. Aeropyrum spp. are aerobic and hyperthermophilic archaea. A. camini was isolated from a deep-sea hydrothermal vent, and A. pernix was isolated from a coastal solfataric vent. In chapter 2, I compared the genomes of the two species to investigate the adaptation strategy in each habitat. Their shared genome features were a small genome size, a high GC content, and a large portion of orthologous genes (86 to 88%). The genomes also showed high synteny. These shared features may have been derived from the small number of mobile genetic elements and the lack of a RecBCD system, a recombinational enzyme complex. In addition, the specialized physiology (aerobic and hyperthermophilic) of Aeropyrum spp. may also contribute to the entire-genome similarity. Despite having stable genomes, interference of synteny occurred with two proviruses, A. pernix spindle-shaped virus 1 (APSV1) and A. pernix ovoid virus 1 (APOV1), and clustered regularly interspaced short palindromic repeat (CRISPR) elements. CRISPR spacer sequences observed in the A. camini showed significant matches with protospacers of the two proviruses found in the genome of A. pernix, indicating that A. camini interacted with viruses closely related to APSV1 and APOV1. Furthermore, a significant fraction of the nonorthologous genes (41 to 45%) were proviral genes or ORFans probably originating from viruses.
    [Show full text]
  • Linn E and Taxonomy in Japan: on the 300Th Anniversary of His Birth
    No. 3] Proc. Jpn. Acad., Ser. B 86 (2010) 143 Linne and taxonomy in Japan: On the 300th anniversary of his birth By Akihito (His Majesty The Emperor of Japan) (Communicated by Koichiro TSUNEWAKI, M.J.A.) President, dear friends bers of stamens belonged to dierent classes, even when their other characteristics were very similar, I am very grateful to the Linnean Society of while species with the same number of stamens be- London for the kind invitation it extended to me to longed to the same class, even when their other participate in the celebration of the 300th anniver- characteristics were very dierent. This led to the sary of the birth of Carl von Linne. When, in 1980, I idea that the classication of organisms should be was elected as a foreign member of the Society, I felt based on a more comprehensive evaluation of all I did not really deserve the honour, but it has given their characteristics. This idea gained increasing me great encouragement as I have tried to continue support, and Linne’s classication system was even- my research, nding time between my ofcial duties. tually replaced by systems based on phylogeny. Today, I would like to speak in memory of Carl The binomial nomenclature proposed by Linne, von Linne, and address the question of how Euro- however, became the basis of the scientic names of pean scholarship has developed in Japan, touching animals and plants, which are commonly used in the upon the work of people like Carl Peter Thunberg, world today, not only by people in academia but also Linne’s disciple who stayed in Japan for a year as by the general public.
    [Show full text]
  • Biological Diversity in the Patent System
    Biological Diversity in the Patent System Paul Oldham1,2*, Stephen Hall1,3, Oscar Forero1,4 1 ESRC Centre for Economic and Social Aspects of Genomics (Cesagen), Lancaster University, Lancaster, United Kingdom, 2 Institute of Advanced Studies, United Nations University, Yokohama, Japan, 3 One World Analytics, Lancaster, United Kingdom, 4 Centre for Development, Environment and Policy, SOAS, University of London, London, United Kingdom Abstract Biological diversity in the patent system is an enduring focus of controversy but empirical analysis of the presence of biodiversity in the patent system has been limited. To address this problem we text mined 11 million patent documents for 6 million Latin species names from the Global Names Index (GNI) established by the Global Biodiversity Information Facility (GBIF) and Encyclopedia of Life (EOL). We identified 76,274 full Latin species names from 23,882 genera in 767,955 patent documents. 25,595 species appeared in the claims section of 136,880 patent documents. This reveals that human innovative activity involving biodiversity in the patent system focuses on approximately 4% of taxonomically described species and between 0.8–1% of predicted global species. In this article we identify the major features of the patent landscape for biological diversity by focusing on key areas including pharmaceuticals, neglected diseases, traditional medicines, genetic engineering, foods, biocides, marine genetic resources and Antarctica. We conclude that the narrow focus of human innovative activity and ownership of genetic resources is unlikely to be in the long term interest of humanity. We argue that a broader spectrum of biodiversity needs to be opened up to research and development based on the principles of equitable benefit-sharing, respect for the objectives of the Convention on Biological Diversity, human rights and ethics.
    [Show full text]
  • Botanical Nomenclature: Concept, History of Botanical Nomenclature
    Module – 15; Content writer: AvishekBhattacharjee Module 15: Botanical Nomenclature: Concept, history of botanical nomenclature (local and scientific) and its advantages, formation of code. Content writer: Dr.AvishekBhattacharjee, Central National Herbarium, Botanical Survey of India, P.O. – B. Garden, Howrah – 711 103. Module – 15; Content writer: AvishekBhattacharjee Botanical Nomenclature:Concept – A name is a handle by which a mental image is passed. Names are just labels we use to ensure we are understood when we communicate. Nomenclature is a mechanism for unambiguous communication about the elements of taxonomy. Botanical Nomenclature, i.e. naming of plants is that part of plant systematics dealing with application of scientific names to plants according to some set rules. It is related to, but distinct from taxonomy. A botanical name is a unique identifier to which information of a taxon can be attached, thus enabling the movement of data across languages, scientific disciplines, and electronic retrieval systems. A plant’s name permits ready summarization of information content of the taxon in a nested framework. A systemofnamingplantsforscientificcommunicationmustbe international inscope,andmustprovideconsistencyintheapplicationof names.Itmustalsobeacceptedbymost,ifnotall,membersofthe scientific community. These criteria led, almost inevitably, to International Botanical Congresses (IBCs) being the venue at which agreement on a system of scientific nomenclature for plants was sought. The IBCs led to publication of different ‘Codes’ which embodied the rules and regulations of botanical nomenclature and the decisions taken during these Congresses. Advantages ofBotanical Nomenclature: Though a common name may be much easier to remember, there are several good reasons to use botanical names for plant identification. Common names are not unique to a specific plant.
    [Show full text]
  • Microbial Evolution and Diversity
    PART V Microbial Evolution and Diversity This material cannot be copied, disseminated, or used in any way without the express written permission of the publisher. Copyright 2007 Sinauer Associates Inc. The objectives of this chapter are to: N Provide information on how bacteria are named and what is meant by a validly named species. N Discuss the classification of Bacteria and Archaea and the recent move toward an evolutionarily based, phylogenetic classification. N Describe the ways in which the Bacteria and Archaea are identified in the laboratory. This material cannot be copied, disseminated, or used in any way without the express written permission of the publisher. Copyright 2007 Sinauer Associates Inc. 17 Taxonomy of Bacteria and Archaea It’s just astounding to see how constant, how conserved, certain sequence motifs—proteins, genes—have been over enormous expanses of time. You can see sequence patterns that have per- sisted probably for over three billion years. That’s far longer than mountain ranges last, than continents retain their shape. —Carl Woese, 1997 (in Perry and Staley, Microbiology) his part of the book discusses the variety of microorganisms that exist on Earth and what is known about their characteris- Ttics and evolution. Most of the material pertains to the Bacteria and Archaea because there is a special chapter dedicated to eukaryotic microorganisms. Therefore, this first chapter discusses how the Bacte- ria and Archaea are named and classified and is followed by several chapters (Chapters 18–22) that discuss the properties and diversity of the Bacteria and Archaea. When scientists encounter a large number of related items—such as the chemical elements, plants, or animals—they characterize, name, and organize them into groups.
    [Show full text]
  • Expression of Cyclomaltodextrinase Gene from Bacillus Halodurans C-125 and Characterization of Its Multisubstrate Specificity
    Food Sci. Biotechnol. Vol. 18, No. 3, pp. 776 ~ 781 (2009) ⓒ The Korean Society of Food Science and Technology Expression of Cyclomaltodextrinase Gene from Bacillus halodurans C-125 and Characterization of Its Multisubstrate Specificity Hye-Jeong Kang, Chang-Ku Jeong, Myoung-Uoon Jang, Seung-Ho Choi, Min-Hong Kim1, Jun-Bae Ahn2, Sang-Hwa Lee3, Sook-Ja Jo3, and Tae-Jip Kim* Department of Food Science and Technology, Chungbuk National University, Cheongju, Chungbuk 361-763, Korea 1MH2 Biochemical Co., Ltd., Eumseong, Chungbuk 369-841, Korea 2Department of Food Service Industry, Seowon University, Cheongju, Chungbuk 361-741, Korea 3Department of Food and Nutrition, Seowon University, Cheongju, Chungbuk 361-741, Korea Abstract A putative cyclomaltodextrinase (BHCD) gene was found from the genome of Bacillus halodurans C-125, which encodes 578 amino acids with a predicted molecular mass of 67,279 Da. It shares 42-59% of amino acid sequence identity with common cyclomaltodextrinase (CDase)-family enzymes. The corresponding gene was cloned by polymerase chain reaction (PCR) and the dimeric enzyme with C-terminal 6-histidines was successfully overproduced and purified from recombinant Escherichia coli. BHCD showed the highest activity against β-CD at pH 7.0 and 50oC. Due to its versatile hydrolysis and transglycosylation activities, BHCD has been confirmed as a member of CDases. However, BHCD can be distinguished from other typical CDases on the basis of its novel multisubstrate specificity. While typical CDases have over 10 times higher activity on β-CD than starch or pullulan, the CD-hydrolyzing activity of BHCD is only 2.3 times higher than pullulan.
    [Show full text]
  • Proteome Cold-Shock Response in the Extremely Acidophilic Archaeon, Cuniculiplasma Divulgatum
    microorganisms Article Proteome Cold-Shock Response in the Extremely Acidophilic Archaeon, Cuniculiplasma divulgatum Rafael Bargiela 1 , Karin Lanthaler 1,2, Colin M. Potter 1,2 , Manuel Ferrer 3 , Alexander F. Yakunin 1,2, Bela Paizs 1,2, Peter N. Golyshin 1,2 and Olga V. Golyshina 1,2,* 1 School of Natural Sciences, Bangor University, Deiniol Rd, Bangor LL57 2UW, UK; [email protected] (R.B.); [email protected] (K.L.); [email protected] (C.M.P.); [email protected] (A.F.Y.); [email protected] (B.P.); [email protected] (P.N.G.) 2 Centre for Environmental Biotechnology, Bangor University, Deiniol Rd, Bangor LL57 2UW, UK 3 Systems Biotechnology Group, Department of Applied Biocatalysis, CSIC—Institute of Catalysis, Marie Curie 2, 28049 Madrid, Spain; [email protected] * Correspondence: [email protected]; Tel.: +44-1248-388607; Fax: +44-1248-382569 Received: 27 April 2020; Accepted: 15 May 2020; Published: 19 May 2020 Abstract: The archaeon Cuniculiplasma divulgatum is ubiquitous in acidic environments with low-to-moderate temperatures. However, molecular mechanisms underlying its ability to thrive at lower temperatures remain unexplored. Using mass spectrometry (MS)-based proteomics, we analysed the effect of short-term (3 h) exposure to cold. The C. divulgatum genome encodes 2016 protein-coding genes, from which 819 proteins were identified in the cells grown under optimal conditions. In line with the peptidolytic lifestyle of C. divulgatum, its intracellular proteome revealed the abundance of proteases, ABC transporters and cytochrome C oxidase. From 747 quantifiable polypeptides, the levels of 582 proteins showed no change after the cold shock, whereas 104 proteins were upregulated suggesting that they might be contributing to cold adaptation.
    [Show full text]
  • Historical Review of Systematic Biology and Nomenclature - Alessandro Minelli
    BIOLOGICAL SCIENCE FUNDAMENTALS AND SYSTEMATICS – Vol. II - Historical Review of Systematic Biology and Nomenclature - Alessandro Minelli HISTORICAL REVIEW OF SYSTEMATIC BIOLOGY AND NOMENCLATURE Alessandro Minelli Department of Biology, Via U. Bassi 58B, I-35131, Padova,Italy Keywords: Aristotle, Belon, Cesalpino, Ray, Linnaeus, Owen, Lamarck, Darwin, von Baer, Haeckel, Sokal, Sneath, Hennig, Mayr, Simpson, species, taxa, phylogeny, phenetic school, phylogenetic school, cladistics, evolutionary school, nomenclature, natural history museums. Contents 1. The Origins 2. From Classical Antiquity to the Renaissance Encyclopedias 3. From the First Monographers to Linnaeus 4. Concepts and Definitions: Species, Homology, Analogy 5. The Impact of Evolutionary Theory 6. The Last Few Decades 7. Nomenclature 8. Natural History Collections Glossary Bibliography Biographical Sketch Summary The oldest roots of biological systematics are found in folk taxonomies, which are nearly universally developed by humankind to cope with the diversity of the living world. The logical background to the first modern attempts to rationalize the classifications was provided by Aristotle's logic, as embodied in Cesalpino's 16th century classification of plants. Major advances were provided in the following century by Ray, who paved the way for the work of Linnaeus, the author of standard treatises still regarded as the starting point of modern classification and nomenclature. Important conceptual progress was due to the French comparative anatomists of the early 19th century UNESCO(Cuvier, Geoffroy Saint-Hilaire) – andEOLSS to the first work in comparative embryology of von Baer. Biological systematics, however, was still searching for a unifying principle that could provide the foundation for a natural, rather than conventional, classification.SAMPLE This principle wasCHAPTERS provided by evolutionary theory: its effects on classification are already present in Lamarck, but their full deployment only happened in the 20th century.
    [Show full text]
  • Archaeal Viruses and Bacteriophages: Comparisons and Contrasts
    Review Archaeal viruses and bacteriophages: comparisons and contrasts Maija K. Pietila¨ , Tatiana A. Demina, Nina S. Atanasova, Hanna M. Oksanen, and Dennis H. Bamford Institute of Biotechnology and Department of Biosciences, P.O. Box 56, Viikinkaari 5, 00014 University of Helsinki, Helsinki, Finland Isolated archaeal viruses comprise only a few percent of Euryarchaeaota [9,10]. Archaea have also been cultivated all known prokaryotic viruses. Thus, the study of viruses from moderate environments such as seawater and soil. infecting archaea is still in its early stages. Here we Consequently, an additional phylum, Thaumarchaeota, summarize the most recent discoveries of archaeal vi- has been formed to contain mesophilic and thermophilic ruses utilizing a virion-centered view. We describe the ammonia-oxidizing archaea [11]. However, all known ar- known archaeal virion morphotypes and compare them chaeal viruses infect extremophiles – mainly hyperther- to the bacterial counterparts, if such exist. Viruses infect- mophiles belonging to the crenarchaeal genera Sulfolobus ing archaea are morphologically diverse and present and Acidianus or halophiles of the euryarchaeal genera some unique morphotypes. Although limited in isolate Haloarcula, Halorubrum, and Halobacterium [6,7]. Even number, archaeal viruses reveal new insights into the though bacteria are also found in diverse extreme habitats viral world, such as deep evolutionary relationships such as hypersaline lakes, archaea typically dominate at between viruses that infect hosts from all three domains extreme salinities, based on both cultivation-dependent of life. and -independent studies [6,12–15]. Consequently, archae- al viruses do the same in hypersaline environments. About Discovery of archaeal viruses 50 prokaryotic haloviruses were recently isolated from All cellular organisms are susceptible to viral infections, nine globally distant locations, and only four of them which makes viruses a major evolutionary force shaping infected bacteria [6,16].
    [Show full text]
  • Differences in Lateral Gene Transfer in Hypersaline Versus Thermal Environments Matthew E Rhodes1*, John R Spear2, Aharon Oren3 and Christopher H House1
    Rhodes et al. BMC Evolutionary Biology 2011, 11:199 http://www.biomedcentral.com/1471-2148/11/199 RESEARCH ARTICLE Open Access Differences in lateral gene transfer in hypersaline versus thermal environments Matthew E Rhodes1*, John R Spear2, Aharon Oren3 and Christopher H House1 Abstract Background: The role of lateral gene transfer (LGT) in the evolution of microorganisms is only beginning to be understood. While most LGT events occur between closely related individuals, inter-phylum and inter-domain LGT events are not uncommon. These distant transfer events offer potentially greater fitness advantages and it is for this reason that these “long distance” LGT events may have significantly impacted the evolution of microbes. One mechanism driving distant LGT events is microbial transformation. Theoretically, transformative events can occur between any two species provided that the DNA of one enters the habitat of the other. Two categories of microorganisms that are well-known for LGT are the thermophiles and halophiles. Results: We identified potential inter-class LGT events into both a thermophilic class of Archaea (Thermoprotei) and a halophilic class of Archaea (Halobacteria). We then categorized these LGT genes as originating in thermophiles and halophiles respectively. While more than 68% of transfer events into Thermoprotei taxa originated in other thermophiles, less than 11% of transfer events into Halobacteria taxa originated in other halophiles. Conclusions: Our results suggest that there is a fundamental difference between LGT in thermophiles and halophiles. We theorize that the difference lies in the different natures of the environments. While DNA degrades rapidly in thermal environments due to temperature-driven denaturization, hypersaline environments are adept at preserving DNA.
    [Show full text]
  • A Korarchaeal Genome Reveals Insights Into the Evolution of the Archaea
    A korarchaeal genome reveals insights into the evolution of the Archaea James G. Elkinsa,b, Mircea Podarc, David E. Grahamd, Kira S. Makarovae, Yuri Wolfe, Lennart Randauf, Brian P. Hedlundg, Ce´ line Brochier-Armaneth, Victor Kunini, Iain Andersoni, Alla Lapidusi, Eugene Goltsmani, Kerrie Barryi, Eugene V. Koonine, Phil Hugenholtzi, Nikos Kyrpidesi, Gerhard Wannerj, Paul Richardsoni, Martin Kellerc, and Karl O. Stettera,k,l aLehrstuhl fu¨r Mikrobiologie und Archaeenzentrum, Universita¨t Regensburg, D-93053 Regensburg, Germany; cBiosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831; dDepartment of Chemistry and Biochemistry, University of Texas, Austin, TX 78712; eNational Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD 20894; fDepartment of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT 06520; gSchool of Life Sciences, University of Nevada, Las Vegas, NV 89154; hLaboratoire de Chimie Bacte´rienne, Unite´ Propre de Recherche 9043, Centre National de la Recherche Scientifique, Universite´de Provence Aix-Marseille I, 13331 Marseille Cedex 3, France; iU.S. Department of Energy Joint Genome Institute, Walnut Creek, CA 94598; jInstitute of Botany, Ludwig Maximilians University of Munich, D-80638 Munich, Germany; and kInstitute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095 Communicated by Carl R. Woese, University of Illinois at Urbana–Champaign, Urbana, IL, April 2, 2008 (received for review January 7, 2008) The candidate division Korarchaeota comprises a group of uncul- and sediment samples from Obsidian Pool as an inoculum. The tivated microorganisms that, by their small subunit rRNA phylog- cultivation system supported the stable growth of a mixed commu- eny, may have diverged early from the major archaeal phyla nity of hyperthermophilic bacteria and archaea including an or- Crenarchaeota and Euryarchaeota.
    [Show full text]
  • Archaeal Adaptation to Higher Temperatures Revealed by Genomic Sequence of Thermoplasma Volcanium
    Archaeal adaptation to higher temperatures revealed by genomic sequence of Thermoplasma volcanium Tsuyoshi Kawashima*†, Naoki Amano*†‡, Hideaki Koike*†, Shin-ichi Makino†, Sadaharu Higuchi†, Yoshie Kawashima-Ohya†, Koji Watanabe§, Masaaki Yamazaki§, Keiichi Kanehori¶, Takeshi Kawamotoʈ, Tatsuo Nunoshiba**, Yoshihiro Yamamoto††, Hironori Aramaki‡‡, Kozo Makino§§, and Masashi Suzuki†¶¶ †National Institute of Bioscience and Human Technology, Core Research for Evolutional Science and Technology Centre of Structural Biology, 1-1 Higashi, Tsukuba 305-0046, Japan; ‡Doctoral Program in Medical Sciences, University of Tsukuba, 1-1-1 Tennohdai, Tsukuba 305-0006, Japan; §Bioscience Research Laboratory, Fujiya, 228 Soya, Hadano 257-0031, Japan; ¶DNA Analysis Department, Techno Research Laboratory, Hitachi Science Systems, 1-280 Higashi-Koigakubo, Kokubunji 185-8601, Japan; ʈDepartment of Biochemistry, Hiroshima University, School of Dentistry, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan; **Department of Molecular and Cellular Biology, Biological Institute, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan; ††Department of Genetics, Hyogo College of Medicine, Nishinomiya 663-8501, Japan; ‡‡Department of Molecular Biology, Daiichi College of Pharmaceutical Science, 22-1 Tamagawa-cho, Minami-ku, Fukuoka 815-8511, Japan; and §§Department of Molecular Microbiology, The Research Institute of Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita 565-0871, Japan Edited by Aaron Klug, Royal Society of London, London, United Kingdom, and approved October 16, 2000 (received for review August 18, 2000) The complete genomic sequence of the archaeon Thermoplasma contigs. The remaining gaps were bridged by DNA fragments volcanium, possessing optimum growth temperature (OGT) of constructed using the PCR. The average repetition in sequencing 60°C, is reported. By systematically comparing this genomic se- the same base positions was 13-fold.
    [Show full text]