Genomics and Physiology of a Marine Flavobacterium Encoding a Proteorhodopsin and a Xanthorhodopsin- Like Protein

Total Page:16

File Type:pdf, Size:1020Kb

Genomics and Physiology of a Marine Flavobacterium Encoding a Proteorhodopsin and a Xanthorhodopsin- Like Protein Genomics and Physiology of a Marine Flavobacterium Encoding a Proteorhodopsin and a Xanthorhodopsin- Like Protein Thomas Riedel1*, Laura Go´ mez-Consarnau2,Ju¨ rgen Tomasch1, Madeleine Martin1, Michael Jarek1, Jose´ M. Gonza´lez3, Stefan Spring4, Meike Rohlfs1, Thorsten Brinkhoff5, Heribert Cypionka5, Markus Go¨ ker4, Anne Fiebig4, Johannes Klein6, Alexander Goesmann7, Jed A. Fuhrman2, Irene Wagner- Do¨ bler1 1 Helmholtz-Centre for Infection Research, Braunschweig, Germany, 2 University of Southern California, Department of Biological Sciences, Los Angeles, California, United States of America, 3 University of La Laguna, Department of Microbiology, La Laguna, Tenerife, Spain, 4 Leibniz Institute DSMZ – German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany, 5 Carl von Ossietzky University, Institute of Chemistry and Biology of the Marine Environment (ICBM), Oldenburg, Germany, 6 University of Braunschweig, Department of Microbiology, Braunschweig, Germany, 7 Center for Biotechnology, University of Bielefeld, Bielefeld, Germany Abstract Proteorhodopsin (PR) photoheterotrophy in the marine flavobacterium Dokdonia sp. PRO95 has previously been investigated, showing no growth stimulation in the light at intermediate carbon concentrations. Here we report the genome sequence of strain PRO95 and compare it to two other PR encoding Dokdonia genomes: that of strain 4H-3-7-5 which shows the most similar genome, and that of strain MED134 which grows better in the light under oligotrophic conditions. Our genome analysis revealed that the PRO95 genome as well as the 4H-3-7-5 genome encode a protein related to xanthorhodopsins. The genomic environment and phylogenetic distribution of this gene suggest that it may have frequently been recruited by lateral gene transfer. Expression analyses by RT-PCR and direct mRNA-sequencing showed that both rhodopsins and the complete b-carotene pathway necessary for retinal production are transcribed in PRO95. Proton translocation measurements showed enhanced proton pump activity in response to light, supporting that one or both rhodopsins are functional. Genomic information and carbon source respiration data were used to develop a defined cultivation medium for PRO95, but reproducible growth always required small amounts of yeast extract. Although PRO95 contains and expresses two rhodopsin genes, light did not stimulate its growth as determined by cell numbers in a nutrient poor seawater medium that mimics its natural environment, confirming previous experiments at intermediate carbon concentrations. Starvation or stress conditions might be needed to observe the physiological effect of light induced energy acquisition. Citation: Riedel T, Go´mez-Consarnau L, Tomasch J, Martin M, Jarek M, et al. (2013) Genomics and Physiology of a Marine Flavobacterium Encoding a Proteorhodopsin and a Xanthorhodopsin-Like Protein. PLoS ONE 8(3): e57487. doi:10.1371/journal.pone.0057487 Editor: Hauke Smidt, Wageningen University, The Netherlands Received November 5, 2012; Accepted January 22, 2013; Published March 4, 2013 Copyright: ß 2013 Riedel et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Funding: TR, JT, HC, TB, MG, AF, IWD gratefully acknowledge funding by the DFG Transregio-SFB 51 Roseobacter, and LGC by the Swedish Research Council (Project 623-2009-7258). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. Competing Interests: The authors have declared that no competing interests exist. * E-mail: [email protected] Introduction ecosystems suggesting a key role in the biochemical cycles of the oceans. Rhodopsins are photoactive membrane-embedded opsins found Xanthorhodopsins (XRs) are light-harvesting proton pumps in all three domains of life [1]. These energy transduction proteins with a dual chromophore, one retinal molecule and one contain seven-transmembrane a-helices and use retinal as a carotenoid antenna, that were first discovered in Salinibacter ruber cofactor, located in the retinal-binding pocket, for their light- [6]. Its carotenoid antenna salinixanthin transfers as much as 40– driven function. Microbial rhodopsins, classified as type I 45% of the absorbed photons to retinal [7], resulting in a rhodopsins, are widespread amongst prokaryotes and can function potentially much more efficient light-capturing system compared as proton pumps [bacteriorhodopsins (BR) and proteorhodopsins to PRs from Bacteria [4,5] or BRs from Archaea [2]. XRs have a (PR)], ion pumps [(halorhodopsins (HR)] and photosensors binding pocket into which both retinal and a second chromo- [sensory rhodopsins (SRI and SRII)]. BR was discovered in phore, e.g. salinixanthin (S. ruber [6] or echinenone (Gloeobacter Halobacterium salinarium, an extremely halophilic archaeon, found in violaceus [8]) are positioned. hypersaline lakes and salterns [2,3]. Bacterial rhodopsin (proteor- Environmental metagenomics and single cell genomics have hodopsin, PR) was discovered much later in a metagenome shown PRs to be abundant not only in the ocean [9,10,10–18], but fragment of a marine gammaproteobacterium from the SAR86 also in freshwater bacterioplankton [19], where they were found clade [4,5]. More than a decade after their discovery, research on for the first time in Deltaproteobacteria, Verrucomicrobia and Sphingo- PRs has shown their extensive abundance and diversity in aquatic bacteria [20]. In their study, the authors also obtained evidence for PLOS ONE | www.plosone.org 1 March 2013 | Volume 8 | Issue 3 | e57487 Genomics of PRO95 Carrying Two Rhodopsin Genes lateral gene transfer: Actinobacterial PRs were found in several Materials and Methods gammaproteobacterial genomes; moreover, in one actinobacterial genome, two PR genes were present, one related to Actinobacteria, Sampling and Isolation of Strain PRO95 the other one typical for Betaproteobacteria. Sequencing the genomes Strain PRO95 was isolated from a surface water sample of single PR-carrying bacteria recovered by cell sorting from the collected at the ‘‘Kabeltonne’’ at Helgoland Roads, a sampling site ocean showed that their genomes were more representative of the between the two islands of Helgoland (Germany), 60 km offshore natural microbial bacterioplankton community than those of in the North Sea (54u 11.189 North, 7u 549 East). No specific cultivated PR-containing bacteria [21]. However, although this permits were required for the described field study. The sampling new approach has a great potential to reveal the presence of site is not privately owned or protected in any way. The sampling certain genes in single representative genomes, it does not show if of water did not involve endangered or protected species. The the gene is expressed and what is its physiological role for the sampling and isolation procedure has already been described [25]. organism that is carrying it. Experiments using heterologous Dokdonia sp. PRO95 has been deposited at the DSMZ (DSM systems, on the other hand, can show the function of the encoded 26625). protein. They demonstrated the proton pump activity of PRs found in the environment [4] and showed that the proton gradient Cultivation of Strain PRO95 might be used to power flagella movement [22]. The question Strain PRO95 was cultivated on plates of marine agar 2216 puzzling marine microbiologists, however, remains unanswered by (Difco, Becton, Dickinson and Company, Heidelberg, Germany) those approaches, namely, what is powered in marine microbes by at room temperature (20–25uC) for two days. For liquid cultures, the rhodopsins that many of them are carrying? Only culturing of first precultures were made. Single colonies were transferred to a strain that naturally contains the gene has the potential to marine broth 2216 (Difco, Becton, Dickinson and Company, explain how this organism uses the rhodopsin to survive in its Heidelberg, Germany) which was diluted as required. Dilutions particular habitat. were made either with distilled water, in which case the media A large percentage of whole genome sequenced PR-containing were amended with Sea salts (Sigma-Aldrich, St. Louis, USA) to bacteria belong to the family Flavobacteriaceae. However, and obtain the salt concentration of full strength marine broth 2216 despite the genomic similarities, the consequences of light (31.8 g per liter) as described previously [25], or with natural exposure on the different flavobacterial species appear to vary. sterile filtered autoclaved seawater from the North Sea, in order to Whereas light stimulated growth in Dokdonia sp. MED134 [23,24], change only the concentration of nutrients, but not the salt no light-induced growth advantage was observed for its relative concentration. Precultures and main cultures were incubated at Dokdonia sp. PRO95 [25]. No growth advantage in the light was 25uC and 160 rpm in a natural day-light cycle. For DNA also reported for the alphaproteobacterium Candidatus Pelagibacter extraction, cells were cultivated in full strength marine broth 2216. ubique HTCC1062 [26], the flavobacterium Polaribacter sp. For RNA extraction cells were cultured in half strength marine MED152 [27], and the gammaproteobacteria Vibrio sp. AND4 broth 2216 amended with Sea salts and in 250 times diluted [28] and Vibrio campellii BAA-1116 [29]. However,
Recommended publications
  • Amyloodinium Ocellatum (Dinoflagellata) in Mississippi Sound: Natural and Experimental Hosts
    Gulf and Caribbean Research Volume 6 Issue 4 January 1980 Studies on Amyloodinium ocellatum (Dinoflagellata) in Mississippi Sound: Natural and Experimental Hosts Adrian R. Lawler Gulf Coast Research Laboratory Follow this and additional works at: https://aquila.usm.edu/gcr Part of the Marine Biology Commons Recommended Citation Lawler, A. R. 1980. Studies on Amyloodinium ocellatum (Dinoflagellata) in Mississippi Sound: Natural and Experimental Hosts. Gulf Research Reports 6 (4): 403-413. Retrieved from https://aquila.usm.edu/gcr/vol6/iss4/8 DOI: https://doi.org/10.18785/grr.0604.08 This Article is brought to you for free and open access by The Aquila Digital Community. It has been accepted for inclusion in Gulf and Caribbean Research by an authorized editor of The Aquila Digital Community. For more information, please contact [email protected]. Gulf Research Reports, Vol. 6,No. 4,403-413, 1980. STUDIES ON AMYLOODINIUM OCELLA TUM (DINOFLAGELLATA) IN MISSISSIPPI SOUND: NATURAL AND EXPERIMENTAL HOSTS' ADRIAN R. LAWLER Parasitology Section, Gulf Coast Research Laboratory, Ocean Springs, Mississippi 39564 ABSTRACT Four species of parasitic dinoflagellates have been found to occur naturally on the gills and fins of Missis- sippi Sound fishes: Amyloodinium ocellatum (Brown 1931) Brown and Hovasse 1946, Oodinium cyprinodontum Lawler 1967, and two undescribed species. Sixteen of 43 species of fishes examined had natural gill infections of A. ocellatum. Seventy-one of 79 species of fishes exposed to A. ocellatum dinospores were susceptible, and succumbed, to the dinoflagel- late. Eight did not die even though exposed to numerous dinospores. The most common signs in an infested fish were spasmodic gasping and uncoordinated movements.
    [Show full text]
  • Sequence from B4 Sponge with (A) the First BLAST Hit Asbestopluma Lycopodium and (B) the Sequence of M
    Supplementary Material Figure S1. Alignments of CO1 (PorCOI2fwd/PorCOI2rev) sequence from B4 sponge with (A) the first BLAST hit Asbestopluma lycopodium and (B) the sequence of M. acerata displaying low query cover. 1 Figure S2. Alignment of CO1 (dgLCO1490/dgHCO2198) sequence from B4 sponge with the first BLAST hit (M. acerata). 2 Figure S3. Alignment of CO1 (dgLCO1490/dgHCO2198) sequence from D4 sponge with the first BLAST hit (H. pilosus). 3 Figure S4. Taxonomy Bar Plot, reporting the relative frequencies (in percentage, %) of the bacteria taxons more representative for each of the four sponges under analysis . Sample code: B4= M. (Oxymycale) acerata; D4= H. pilosus, D6= M. sarai, C6= H. (Rhizoniera) dancoi. Each taxon is highlighted by a different color. 4 Figure S5. Krona plot at the seven increasing complexity levels: (a) Regnum, (b) Phylum, (c) Class, (d) Order, (e) Family, (f) Genus and (g) Species. a) 5 b) 6 c) 7 d) 8 e) 9 f) 10 g) 11 Figure S6. Distribution of ASV’s frequencies. 12 Figure S7. Distribution of ASV’s frequencies for each sample (reported as a blue bar). 13 Table S1. BLAST results from B4 sponge (Mycale (Oxymycale) acerata). The primer names, sequence length in base pairs (bp), first hits (highlighted in bold), hits at low significance displaying the correct species (where present), query cover and identity percentages (%) were reported. Sequence Query Identity Primers BLAST results length (bp) cover (%) (%) Mycale macilenta voucher 0CDN7203‐O small subunit 18S A/B 1700 99 98 ribosomal RNA gene, partial sequence Mycale
    [Show full text]
  • Chromerid Genomes Reveal the Evolutionary Path From
    RESEARCH ARTICLE elifesciences.org Chromerid genomes reveal the evolutionary path from photosynthetic algae to obligate intracellular parasites Yong H Woo1*, Hifzur Ansari1,ThomasDOtto2, Christen M Klinger3†, Martin Kolisko4†, Jan Michalek´ 5,6†, Alka Saxena1†‡, Dhanasekaran Shanmugam7†, Annageldi Tayyrov1†, Alaguraj Veluchamy8†§, Shahjahan Ali9¶,AxelBernal10,JavierdelCampo4, Jaromır´ Cihla´ rˇ5,6, Pavel Flegontov5,11, Sebastian G Gornik12,EvaHajduskovˇ a´ 5, AlesHorˇ ak´ 5,6,JanJanouskovecˇ 4, Nicholas J Katris12,FredDMast13,DiegoMiranda- Saavedra14,15, Tobias Mourier16, Raeece Naeem1,MridulNair1, Aswini K Panigrahi9, Neil D Rawlings17, Eriko Padron-Regalado1, Abhinay Ramaprasad1, Nadira Samad12, AlesTomˇ calaˇ 5,6, Jon Wilkes18,DanielENeafsey19, Christian Doerig20, Chris Bowler8, 4 10 3 21,22 *For correspondence: yong. Patrick J Keeling , David S Roos ,JoelBDacks, Thomas J Templeton , 12,23 5,6,24 5,6,25 1 [email protected] (YHW); arnab. Ross F Waller , Julius Lukesˇ , Miroslav Obornık´ ,ArnabPain* [email protected] (AP) 1Pathogen Genomics Laboratory, Biological and Environmental Sciences and Engineering † These authors contributed Division, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia; equally to this work 2Parasite Genomics, Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Present address: ‡Vaccine and Cambridge, United Kingdom; 3Department of Cell Biology, University of Alberta, Infectious Disease Division, Fred Edmonton, Canada; 4Canadian Institute for Advanced Research, Department of Botany,
    [Show full text]
  • MBI Volume 70 Issue 2 Cover and Back Matter
    MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM RESEARCH AWARDS Applications are invited for research awards to enable scientists from the United Kingdom, or from abroad, to work at the Association's Citadel Hill Laboratory, either as independent visitors or to collaborate in work currently being undertaken as part of the Association's Research Programme. Two levels of award are available: RESEARCH BURSARIES available for visitors at all levels of experience from graduate students to senior scientists. Several awards are made each year with a maximum value of £2,500. RAY LANKESTERINVESTIGATORSHIP available to postdoctoral research workers with several years of research experience in some aspect of marine biology or marine physiology. One award is made each year to a value of £5,000 to enable visitors to work at the Laboratory for a minimum of 5 months over an 18-month period. Applications or enquiries are invited for 1990 and 1991. Successful applicants will be expected to become members of the Association. Further details may be obtained from: Dr Gerald Boalch, The Bursar Marine Biological Association of the United Kingdom The Laboratory Citadel Hill Plymouth PL1 2PB UK or by telephoning: 0752-222772 ext. 211 Downloaded from https://www.cambridge.org/core. IP address: 170.106.35.93, on 26 Sep 2021 at 17:38:53, subject to the Cambridge Core terms of use, available at https://www.cambridge.org/core/terms. https://doi.org/10.1017/S0025315400035359 Cover: The photograph on the outside of the cover was taken by David Nicholson at Pedney Beach, Cornwall. Inside front cover: Second zoea of velvet fiddler crab Portunus puber (L.) (height 3 mm).
    [Show full text]
  • Working Group Reports
    2.0 WORKING GROUPS REPORTS Expenditures by SCOR Working Groups (1996-2005), p. 2-1 2.1 Disbanded Working Groups, p. 2-2 2.1.1 WG 78 on Determination of Photosynthetic Pigments in Seawater, p. 2-2 Urban 2.2 Current Working Groups— The Executive Committee Reporter for each working group will present an update on working group activities and progress, and will make recommendations on actions to be taken. Working groups expire at each General Meeting, but can be renewed at the meeting and can be disbanded whenever appropriate. 2.2.1 WG 111—Coupling Winds, Waves and Currents in Coastal Models, p. 2-16 Wainer 2.2.2 WG 115—Standards for the Survey and Analysis of Plankton, p. 2-18 Pierrot-Bults 2.2.3 WG 116—Sediment Traps and 234Th Methods for Carbon Export Flux Determination, p. 2-29 Labeyrie 2.2.4 WG 119—Quantitative Ecosystems Indicators for Fisheries Management, p. 2-31 Taniguchi 2.2.5 WG 120—Marine Phytoplankton and Global Climate Regulation: The Phaeocystis spp. Cluster As Model, p. 2-33 Hall 2.2.6 WG 121—Ocean Mixing, p. 2-35 Akulichev 2.2.7 WG 122—Mechanisms of Sediment Retention in Estuaries, p. 2-39 Labeyrie 2.2.8 WG 123—Reconstruction of Past Ocean Circulation (PACE), p. 2-40 Labeyrie 2.2.9 WG 124—Analyzing the Links Between Present Oceanic Processes and Paleo-Records (LINKS), p. 2-43 Wainer 2.2.10 WG 125—Global Comparisons of Zooplankton Time Series, p. 2-52 Pierrot-Bults 2.2.11 WG 126—Role of Viruses in Marine Ecosystems, p.
    [Show full text]
  • APPENDIX 1 Classified List of Fishes Mentioned in the Text, with Scientific and Common Names
    APPENDIX 1 Classified list of fishes mentioned in the text, with scientific and common names. ___________________________________________________________ Scientific names and classification are from Nelson (1994). Families are listed in the same order as in Nelson (1994), with species names following in alphabetical order. The common names of British fishes mostly follow Wheeler (1978). Common names of foreign fishes are taken from Froese & Pauly (2002). Species in square brackets are referred to in the text but are not found in British waters. Fishes restricted to fresh water are shown in bold type. Fishes ranging from fresh water through brackish water to the sea are underlined; this category includes diadromous fishes that regularly migrate between marine and freshwater environments, spawning either in the sea (catadromous fishes) or in fresh water (anadromous fishes). Not indicated are marine or freshwater fishes that occasionally venture into brackish water. Superclass Agnatha (jawless fishes) Class Myxini (hagfishes)1 Order Myxiniformes Family Myxinidae Myxine glutinosa, hagfish Class Cephalaspidomorphi (lampreys)1 Order Petromyzontiformes Family Petromyzontidae [Ichthyomyzon bdellium, Ohio lamprey] Lampetra fluviatilis, lampern, river lamprey Lampetra planeri, brook lamprey [Lampetra tridentata, Pacific lamprey] Lethenteron camtschaticum, Arctic lamprey] [Lethenteron zanandreai, Po brook lamprey] Petromyzon marinus, lamprey Superclass Gnathostomata (fishes with jaws) Grade Chondrichthiomorphi Class Chondrichthyes (cartilaginous
    [Show full text]
  • Relationships Between Oceanographic Factors and the Distribution of Juvenile Coho Salmon
    AN ABSTRACT OF THE THESIS OF Alton W. Chung for the degree of Master of Science in Oceanography presented on March 1, 1985 Title: Relationships Between Oceanographic Factors and the Distribution of Juvenile Coho Salmon (Oncorhynchus kisutch) Of f Oregon and Washington, 1982-1983 Redacted for Privacy Abstract approved: Dr. William G. Pearc Juvenile coho salmon (101-400 mm) were sampled by purse seine off the Pacific Coast from Waatch Point, Washington to Four Mile Creek, Oregon, out to 30 mi offshore, during the months of May, June, and September in 1982 and 1983. Sea surface temperature, surface salinity, surface chlorophyll-a concentration, and Secchi depth were measured at each station. Sea surface temperatures were higher in 1983 than in 1982, while surface chlorophyll-a concentrations and surface salinities were lower. Catch data were not highly correlated with any of the four physical parameters measured. Strong northerly winds and strong upwelling tended to disperse juvenile coho offshore and south. Fish were found closer inshore during periods of weak winds and weak upwelling. In both years the center of distribution of the fish appeared to shift northward as the summer progressed. Larger fish, in general, were found farther north and offshore throughout the year. Relationships Between Oceanographic Factors and the Distribution of Juvenile Coho Salmon Oncorhynchus kisutch Off Oregon and Washington, 1982-1983 by Alton W. Chung A THESIS submitted to Oregon State University in partial fulfillment of the requirements for the degree
    [Show full text]
  • Algae Becomes UNCW Project
    Established in 1867 / Volume 71, Number 20 January 21, 2001 Wilmington, N.C. $1.50¢ Home delivery 36¢ water, indicate whether a certain The blooms can kill people as well, toxin is present. as UNCW chemist Jeff Wright knows. They envision a dipstick-type Algae becomes Dr. Wright led an emergency effort device that changes colors much like by the Canadian government in 1987 a pregnancy test. to figure out what poisoned more Dr. Baden has developed a method than 100 people in Montreal, of testing for brevetoxin, the killer in UNCW project including four who eventually died. red tides, and submitted it to the The victims had eaten mussels at Food and Drug Administration. exactly what it was like two days ago local restaurants. As it is now, officials screening BY BRIAN FEAGANS when the fish died,” Dr. Tomas said. A group of 30 scientists worked shellfish for the toxin have only one Staff Writer “Marine systems are very dynamic. around the clock for 104 hours before federally approved method: inject More than 5 million fish had died They’re constantly changing. You fingering little-known microscopic samples into a mouse and see if it in creeks feeding Rehoboth Bay have to be thinking like the ocean, algae as the killer. dies. when puzzled Delaware officials got a the way the tides are going in and The Pseudo-nitzschia were pro- Florida is funding the research as a phone call from UNCW researcher out.” ducing a potent acid that causes way to save mice and time. Carmelo Tomas in September.
    [Show full text]
  • Living Resources Report Texas A&M University-Corpus Christi Results - Open Bay Habitat
    Center for Coastal Studies CCBNEP Living Resources Report Texas A&M University-Corpus Christi Results - Open Bay Habitat B. Living Resources - Habitats Detailed community profiles of estuarine habitats within the CCBNEP study area are not available. Therefore, in the following sections, the organisms, community structure, and ecosystem processes and functions of the major estuarine habitats (Open Bay, Oyster Reef, Hard Substrate, Seagrass Meadow, Coastal Marsh, Tidal Flat, Barrier Island, and Gulf Beach) within the CCBNEP study area are presented. The following major subjects will be addressed for each habitat: (1) Physical setting and processes; (2) Producers and Decomposers; (3) Consumers; (4) Community structure and zonation; and (5) Ecosystem processes. HABITAT 1: OPEN BAY Table Of Contents Page 1.1. Physical Setting & Processes ............................................................................ 45 1.1.1 Distribution within Project Area ......................................................... 45 1.1.2 Historical Development ....................................................................... 45 1.1.3 Physiography ...................................................................................... 45 1.1.4 Geology and Soils ................................................................................ 46 1.1.5 Hydrology and Chemistry ................................................................... 47 1.1.5.1 Tides .................................................................................... 47 1.1.5.2 Freshwater
    [Show full text]
  • Amyloodinium Ocellatum,An Important Parasite of Cultured Marine Fish
    Southern regional SRAC Publication No. 4705 aquaculture center July 2011 VI PR Amyloodinium ocellatum, an Important Parasite of Cultured Marine Fish Ruth Francis-Floyd1 and Maxine R. Floyd2 Amyloodinium ocellatum was described by Brown drum (Sciaenops ocellatus), striped bass (Morone saxa- (1931) and is one of the most important pathogenic tilis), striped mullet (Mugil cephalus), European sea bass parasites affecting the culture of marine and brackish (Dicentrarchus labrax and Lates calcarifer), pompano water fish (Noga and Levy, 2006). The parasite produces (Trachinotus sp.), yellowtail (Seriola dumerili), gilthead a powdery or velvety appearance on infected fish, and sea bream (Sparus aurata), and marine clownfish Amphi( - the resulting disease is commonly referred to as “marine prion sp.). Even tilapia (Oreochromis mossambicus) velvet,” velvet disease, or amyloodiniosis. The organism reared under brackish water conditions are susceptible. is a dinoflagellate ectoparasite and has been reported in This publication will review what is currently known a wide range of marine and estuarine fish. It is one of about A. oscellatum and the resulting disease. Clinical a very few organisms that can infect both teleosts and diagnosis is straightforward, but management strategies elasmobranchs (Alvarez-Pellitero, 2008). This makes it a may be quite different depending on the host species, the concern for public aquaria, which often have mixed spe- intended use of the fish (food versus ornamental), and the cies exhibits with representatives of each taxon. design of the culture system. This ectoparasite can be found on gills and skin (body and fins) of host fish. It can cause devastating Description of causative organism disease and mortality because the organism is able to reproduce quickly when fish are crowded, especially in Amyloodinium is an extracellular parasite that also closed systems.
    [Show full text]
  • Marine Bacterial and Archaeal Ion-Pumping Rhodopsins: Genetic Diversity, Physiology, and Ecology
    crossmark Marine Bacterial and Archaeal Ion-Pumping Rhodopsins: Genetic Diversity, Physiology, and Ecology Jarone Pinhassi,a Edward F. DeLong,b,c Oded Béjà,d José M. González,e Carlos Pedrós-Alióf Centre for Ecology and Evolution in Microbial Model Systems, Linnaeus University, Kalmar, Swedena; Center for Microbial Oceanography: Research and Education, University of Hawaii, Honolulu, Hawaii, USAb; Department of Biological Engineering and Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USAc; Faculty of Biology, Technion-Israel Institute of Technology, Haifa, Israeld; Department of Microbiology, University of La Laguna, La Laguna, Spaine; Systems Biology Program, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas, Madrid, Spainf SUMMARY ..................................................................................................................................................929 Downloaded from INTRODUCTION ............................................................................................................................................930 TYPE I RHODOPSIN CONSERVATION AND DIVERSITY .....................................................................................................931 Rhodopsin Types .........................................................................................................................................931 Phylogenetic Distribution of Microbial Rhodopsins According to Biochemical Functions ...............................................................933
    [Show full text]
  • Salinity and Time Can Alter Epibacterial Communities of an Invasive Seaweed
    fmicb-10-02870 January 6, 2020 Time: 15:52 # 1 ORIGINAL RESEARCH published: 15 January 2020 doi: 10.3389/fmicb.2019.02870 Salinity and Time Can Alter Epibacterial Communities of an Invasive Seaweed Mahasweta Saha1,2,3*, Robert M. W. Ferguson2, Shawn Dove4,5, Sven Künzel6, Rafael Meichssner7,8, Sven C. Neulinger9, Finn Ole Petersen10 and Florian Weinberger1 1 Benthic Ecology, GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany, 2 The School of Life Sciences, University of Essex, Colchester, United Kingdom, 3 Marine Ecology and Biodiversity, Plymouth Marine Laboratory, Plymouth, United Kingdom, 4 Centre for Biodiversity and Environment Research, University College London, London, United Kingdom, 5 Institute of Zoology, Zoological Society of London, London, United Kingdom, 6 Max Planck Institute for Evolutionary Biology, Plön, Germany, 7 Department of Biology, Botanical Institute, Christian-Albrechts-University, Kiel, Germany, 8 Coastal Research & Management, Kiel, Germany, 9 omics2view.consulting GbR, Kiel, Germany, 10 Department of Biology, Institute for General Microbiology, Christian-Albrechts-University, Kiel, Germany The establishment of epibacterial communities is fundamental to seaweed health and Edited by: fitness, in modulating ecological interactions and may also facilitate adaptation to Olga Lage, University of Porto, Portugal new environments. Abiotic factors like salinity can determine bacterial abundance, Reviewed by: growth and community composition. However, influence of salinity as a driver of Hanzhi Lin, epibacterial community composition (until species level) has not been investigated for University of Maryland Center for Environmental Science (UMCES), seaweeds and especially under long time scales. We also do not know how abiotic United States stressors may influence the ‘core’ bacterial species of seaweeds.
    [Show full text]