DOCSLIB.ORG

SAME13 ABSTRACT BOOK All Final Draft ISBN

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
SAME13 ABSTRACT BOOK All Final Draft ISBN Abstract book First EMBO Conference on Aquatic Microbial Ecology – SAME13 Abstract book First EMBO Conference on Aquatic Microbial Ecology – SAME13 Editors: Amalfitano S, Coci M, Corno G, Luna GM SAME13 secretariat: Institute of Ecosystem Study (CNR-ISE) - Largo Tonolli 50, 28922 Verbania (Italy) www.same13.eu - [email protected] Published by Microb&CO, Microbial Ecology Services - viale XX Settembre 45, 95128 Catania (Italy) www.microbeco.org - [email protected] ©2013 Ass. Microb&co, Stresa, Italy, ISBN: 9788890971419 1 Tube …a microbiological ditty In one Test Tube two billion beings vie and tumble in a life giving medium Their paths random aimless and jagged discontinuous motion Their numbers growing exponentially to the outermost limit of their bounded Universe My hand does not tremble as I pour their Cosmos into the Sterilizer Tom Berman (1934-2013) From “Shards” published 2002 2 TABLE OF CONTENTS WELCOME TO STRESA ........................................................................................................................ 4 SAME13 COMMITTEES ....................................................................................................................... 5 GENERAL INFORMATION .................................................................................................................... 6 DESTINATION STRESA ......................................................................................................................... 7 SOCIAL EVENTS ................................................................................................................................... 8 MID-SAME OPTIONAL EXCURSIONS ................................................................................................... 9 INFORMATION FOR PRESENTERS ..................................................................................................... 11 SAME13 BEST PRESENTATION PRIZES .............................................................................................. 11 KEYNOTE SPEAKERS .......................................................................................................................... 12 CONFERENCE VENUE ........................................................................................................................ 15 SAME13 GENERAL PROGRAM .......................................................................................................... 16 ORAL PLENARY SESSIONS ................................................................................................................. 22 OS-1A. Ecological consequences of global change in aquatic ecosystems .................................................. 25 OS-2A. Bacterial diversity: from community composition to community functions ................................... 30 OS-3. Phototrophic plankton as the movers and shakers in aquatic ecosystems ....................................... 37 OS-1B. Ecological consequences of global change in aquatic ecosystems .................................................. 42 OS-4. Bacterial life strategies in relation to carbon flow to higher trophic levels ....................................... 48 OS-5. Giving and getting: lifestyles of attached and symbiotic microbes ................................................... 54 OS-2B. Bacterial diversity: from community composition to community functions ................................... 59 SESSION 5. Giving and getting: lifestyles of attached and symbiotic microbes ........................................... 64 OS-6. Genomics for a better understanding of the aquatic biogeochemical processes ............................. 70 OS-S1. Ecology of waterborne pathogens in the light of climate change ................................................... 75 OS-7. What omics can (and can't) tell us about microbial ecology ............................................................. 82 OS-8A. Bacterial biogeography and dispersal in a changing world ............................................................. 87 OS-9. Microbial metabolic specialization: causes and ecological consequences ........................................ 93 OS-8B. Bacterial biogeography and dispersal in a changing world ............................................................. 98 OS-10. Microbial autoecology and coevolution ........................................................................................ 104 OS-S2. Protists: the ecological meaning of species specific morphologies ............................................... 109 POSTER SESSIONS ........................................................................................................................... 114 PS-1. Ecological consequences of global change in aquatic ecosystems ................................................... 114 PS-2. Bacterial diversity: from community composition to community functions .................................... 156 PS-3. Phototrophic plankton as the movers and shakers in aquatic ecosystems ...................................... 215 PS-4. Bacterial life strategies in relation to carbon flow to higher trophic levels ..................................... 234 PS-5. Giving and getting: lifestyles of attached and symbiotic microbes .................................................. 254 PS-6. Genomics for a better understanding of the aquatic biogeochemical processes ............................ 275 PS-7. What omics can (and can't) tell us about microbial ecology ............................................................ 293 PS-8. Bacterial biogeography and dispersal in a changing world .............................................................. 302 PS-9. Microbial metabolic specialization: causes and ecological consequences ....................................... 323 PS-10. Microbial autoecology and coevolution ......................................................................................... 340 PS-S1. Ecology of waterborne pathogens in the light of climate change .................................................. 364 PS-S2. Protists: the ecological meaning of species specific morphologies ................................................ 384 PATRONAGES, SPONSORS AND SUPPORTERS ................................................................................ 388 AUTHOR INDEX ............................................................................................................................... 389 3 WELCOME TO STRESA After almost two years of hard work, we are thrilled to welcome you to the 13th Symposium on Aquatic Microbial Ecology, this year renamed 1st EMBO Conference on Aquatic Microbial Ecology: SAME13, after the very welcome support ensured by The European Molecular Biology Organization. They were two years of hard work but also unimaginable satisfaction, thanks to your incredible response and your continuous commitment that inspired and supported us in every decision. Over 400 participants, from more than 50 nations are fantastic numbers for a SAME meeting, but also a big responsibility for the organizers. For this reason, we would first acknowledge the invaluable work of the Scientific and the Local Committees: they all did their best to make SAME13 the unforgettable experience we all hope it will be. EMBO’s sponsorship was fundamental for the successful organization of SAME13. It was flanked by the Federation of the European Microbiological Societies (FEMS), by the International Society of Microbial Ecology (ISME) and by a number of scientific Italian associations that ensured the possibility to offer grants to 35% of the over 200 students participating in SAME13 from all over the world. Moreover, thanks to the help of a number of private local companies, we will be able to offer you several extra scientific events introducing the Italian culture, history and landscapes, always with the highest respect of the environment. The administrative work made by the Microb&co Association was fundamental for the organization of SAME13. We would like to thank all the boys and the girls of Microb&co that devoted so much time to solve all your, and our, administrative problems in incredibly fast time. The recognition of SAME13 as an important scientific event by Mr. Giorgio Napolitano, the President of the Italian Republic, makes us proud and confirms the strategic role that aquatic microbial ecology will play in future scenarios. This is indeed strengthened by the quality of your abstracts. Twenty years of impressive improvement of technology and new discoveries make this exciting time the time of microbial ecology, and SAME13 is just surfing on the top of the wave. The selection for the few oral slots in the Plenary Session that makes SAME unique was never so hard, and painful. The Poster Sessions will never be as interesting as at SAME13. This booklet is designed to assist you during SAME13. It includes the daily program, a map of the conference venue, the town of Stresa and its beautiful surroundings, the descriptions of the facultative excursions and of the social events. For specific questions just ask at the Reception Desk of the Congress Palace, or look around for the members of the SAME13 Staff. We hope that SAME13 will help you to gain new insights, friendships, and memories to get you energized and inspired about your future research in the fantastic field of aquatic microbial ecology! Once again, thank you for joining us! Gianluca Corno Gian Marco Luna Manuela Coci Stefano Amalfitano 4 SAME13 COMMITTEES CHAIRS Gianluca Corno (chair), CNR-ISE Verbania
Load more

Recommended publications
  • Article Is Available Ral Lysis of Bacteria in the Photic Zone
    Biogeosciences, 15, 809–819, 2018 https://doi.org/10.5194/bg-15-809-2018 © Author(s) 2018. This work is distributed under the Creative Commons Attribution 4.0 License. Virus-mediated transfer of nitrogen from heterotrophic bacteria to phytoplankton Emma J. Shelford1 and Curtis A. Suttle1,2,3,4 1Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, Canada 2Department of Botany, University of British Columbia, Vancouver, Canada 3Department of Microbiology and Immunology, University of British Columbia, Vancouver, Canada 4Institute of Oceans and Fisheries, University of British Columbia, Vancouver, Canada Correspondence: Curtis A. Suttle ([email protected]) Received: 29 June 2017 – Discussion started: 18 July 2017 Revised: 27 November 2017 – Accepted: 8 January 2018 – Published: 9 February 2018 Abstract. Lytic infection of bacteria by viruses releases nu- rich in free and combined amino acids (Middelboe and Jør- trients during cell lysis and stimulates the growth of primary gensen, 2006) that are taken up and metabolised by bacte- producers, but the path by which these nutrients flow from ria (Middelboe et al., 1996, 2003). When the C V N of DOM lysates to primary producers has not been traced. This study is low relative to bacterial nutritional requirements, bacte- examines the remineralisation of nitrogen (N) from Vibrio ria deaminate DOM and release ammonium (Hollibaugh, lysates by heterotrophic bacterioplankton and its transfer 1978; Goldman et al., 1987) to acquire carbon for energy to primary producers. In laboratory trials, Vibrio sp. strain and growth (e.g. Brussaard et al., 1996; Fouilland et al., PWH3a was infected with a lytic virus (PWH3a-P1) and 2014); the release of ammonium can support phytoplank- the resulting 36.0 µmol L−1 of dissolved organic N (DON) ton growth (Haaber and Middelboe, 2009; Weinbauer et al., in the lysate was added to cultures containing cyanobacte- 2011; Shelford et al., 2012).
    [Show full text]
  • Ecology of Marine Viruses
    UNIVERSITY OF HAWAI‘I AT HILO ◆ HOHONU 2020 ◆ VOL. 18 role in the health of our oceans. The ecological roles and behaviors of marine viruses drive evolu- Rachel Willard tion, shape populations and ecosystems, and with English 225 advances in technology, can potentially be used in Abstract the near future to increase the health of our oceans Marine viruses have played a critical role in and prevent marine life and habitat loss caused by the development of life on our planet. They are of- climate change. ten seen negatively as disease pathogens, but their About Marine Viruses ecological roles and behaviors have played a ma- Viruses are found virtually everywhere on the jor role in the evolution of all species, they have planet and are abundant around any forms of life. shaped populations and ecosystems, and have many important uses and relationships with their of energy consumption, being capable of growth, hosts. Their vast abundance and diversity have adapting to surroundings, responding to external shaped whole ecosystems and drive population forces, reproducing, and most importantly, be- rates in organisms such as marine microbes to cor- ing composed of at least a single cell (Lloyd 11). als and pilot whales. They have been seen to have a Following these rules, these loose strands of ge- mutualistic symbiotic relationship with corals, sea slugs, and many other marine organisms. Marine but they are the most abundant and diverse bio- viruses reduce the harmful plankton populations logical entities in the ocean (Suttle 2007). In the in algal blooms. They play a very important role 1980s, scientists estimated the amount of marine in the stabilization of ocean ecosystems through viral bodies in one milliliter of seawater to be well biogeochemical and nutrient cycling.
    [Show full text]
  • Viruses and Prokaryotes in the Deep-Sea
    Viruses and prokaryotes in the deep-sea Author: Roberto DANOVARO Professor of Marine Biology Polytechnic University of Marche, Ancona, Italy In the last decades the development of new technological and methodological tools has allowed demonstrating that microbes dominates both in terms of abundance and biomass the world oceans. Microbes are of size ranging from 0.02 to a few micrometres and include a wide diversity of viruses, prokaryotes (Bacteria and Archaea), and eukaryotes (either phototrophic and heterotrophic). These tiny particles, either suspended in the water column or attached to the sediments play crucially important functions and control the global biogeochemical cycles. More recently it has been also demonstrated that viruses are by far more important than previously thought. In particular we now know that viruses are the most abundant biological entities of the biosphere, with current estimates of the global viral abundance in the order of 1030-1031. They outnumber prokaryotes by at least one order of magnitude. This huge numerical abundance suggests that viruses can account also for the vast majority of the genetic diversity of the Earth (figure 1). Being not able to self-replicate, viruses invade other organisms and use their cell’s machinery to propagate. They can infect all the known life forms of the oceans, from the largest mammals to the smallest marine microbes. Indeed, also tiny viruses inside larger viruses have been recently discovered. Figure 1. Some examples of Viruses and Prokaryotes (i.e., Bacteria and Archaea)
    [Show full text]
  • Importance of the Viral Shunt in Nitrogen Cycling in Synechococcus Spp
    Terr. Atmos. Ocean. Sci., Vol. 25, No. 6, 839-846, December 2014 doi: 10.3319/TAO.2014.06.11.01(Oc) Importance of the Viral Shunt in Nitrogen Cycling in Synechococcus Spp. Growth in Subtropical Western Pacific Coastal Waters An-Yi Tsai1, *, Gwo-Ching Gong1, 2, 3, and Yu-Wen Huang1 1 Institute of Marine Environmental Chemistry and Ecology, National Taiwan Ocean University, Keelung, Taiwan, Republic of China 2 Center of Excellence for Marine Bioenvironment and Biotechnology, National Taiwan Ocean University, Keelung, Taiwan, Republic of China 3 Taiwan Ocean Research Institute, National Applied Research Laboratories, Taipei, Taiwan, Republic of China Received 21 November 2013, revised 22 May 2014, accepted 11 June 2014 ABSTRACT Viruses play an important role in aquatic environments in bacteria and phytoplankton mortality and also in carbon and nutrient recycling through the lysis of living cells. However, the effects of nitrogen regenerated by viral lysis on the growth of picophytoplankton are rarely studied. This study investigated whether the presence of viruses has a positive effect on the day- time frequency of cell division in Synechococcus spp. in the coastal waters of the western subtropical Pacific Ocean. Using cell incubation with natural viral loads and reduced virus treatments, we characterized the abundance and frequency of cell division in Synechococcus spp. over time. Our results clearly showed that during the daytime as much as 30% of Synechococcus spp. were dividing in natural virus-containing samples, a proportion six times that found in the virus-diluted treatment groups (5%). These results suggest that viruses can exert significant effects on nutrient regeneration, enhancing daytime cell division rates in Synechococcus spp.
    [Show full text]
  • Towards a Better Quantitative Assessment of the Relevance of Deep-Sea Viruses, Bacteria and Archaea in the Functioning of the Ocean Seafloor
    Vol. 75: 81–90, 2015 AQUATIC MICROBIAL ECOLOGY Published online May 6 doi: 10.3354/ame01747 Aquat Microb Ecol Contribution to AME Special 5 ‘SAME 13: progress and perspectives in aquatic microbial ecology’ FREEREE ACCESSCCESS Towards a better quantitative assessment of the relevance of deep-sea viruses, Bacteria and Archaea in the functioning of the ocean seafloor R. Danovaro1,2,*, C. Corinaldesi1, E. Rastelli1,2, A. Dell’Anno1 1Department of Life and Environmental Sciences, Polytechnic University of Marche, Via Brecce Bianche, 60131 Ancona, Italy 2Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Naples, Italy ABSTRACT: The deep-ocean interior contains the majority of microbes present on Earth. Most deep-sea microbes are concentrated in surface sediments, with abundances up to 4 orders of magnitude higher, per unit of volume, than in highly productive waters of the photic zone. To date, it has been shown that prokaryotic biomass largely dominates over all other biotic compo- nents, but the relative importance of Bacteria, Archaea and viruses to the global benthic biomass has not yet been quantified. Here, we report that the microbial abundance in the top 50 cm of deep-sea sediments of the world oceans is on the order of 1.5 ± 0.4 × 1029. This is largely represented by viruses (9.8 ± 2.5 × 1028), followed by Bacteria (3.5 ± 0.9 × 1028 cells) and Archaea (1.4 ± 0.4 × 1028 cells). The overall biomass in the top 50 cm of the deep-sea sediments is 1.7 ± 0.4 Pg C, largely represented by bacterial biomass (ca. 78%), followed by archaeal bio- mass (ca.
    [Show full text]
  • The Viral Shunt in a Stratified Northeast Atlantic Ocean
    UvA-DARE (Digital Academic Repository) Viral lysis of marine microbes in relation to vertical stratification Mojica, K.D.A. Publication date 2015 Document Version Final published version Link to publication Citation for published version (APA): Mojica, K. D. A. (2015). Viral lysis of marine microbes in relation to vertical stratification. General rights It is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulations If you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: https://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. UvA-DARE is a service provided by the library of the University of Amsterdam (https://dare.uva.nl) Download date:04 Oct 2021 Chapter 7 The viral shunt in a stratified Northeast Atlantic Ocean Kristina D. A. Mojica1, and Corina P. D. Brussaard1,2 1Department of Biological Oceanography, Royal Netherlands Institute for Sea Research (NIOZ), P.O. Box 59, 1790 AB Den Burg, Texel, The Netherlands 2Department of Aquatic Microbiology, Institute for Biodiversity and Ecosystem Dynamics (IBED), University of Amsterdam, P.O.
    [Show full text]
  • Viral Ecology of Organic and Inorganic Particles in Aquatic Systems: Avenues for Further Research
    Vol. 57: 321–341, 2009 AQUATIC MICROBIAL ECOLOGY Printed December 2009 doi: 10.3354/ame01363 Aquat Microb Ecol Published online November 24, 2009 Contribution to AME Special 3 ‘Rassoulzadegan at Villefranche-sur-Mer: 3 decades of aquatic microbial ecology’ OPENPEN ACCESSCCESS Viral ecology of organic and inorganic particles in aquatic systems: avenues for further research M. G. Weinbauer1, 2,*, Y. Bettarel3, R. Cattaneo1, B. Luef4, C. Maier1, C. Motegi1, P. Peduzzi5, X. Mari6 1Microbial Ecology & Biogeochemistry Group and Université Pierre et Marie Curie-Paris6, Laboratoire d’Océanographie de Villefranche, 06234 Villefranche-sur-Mer Cedex, France 2Centre National de la Recherche Scientifique (CNRS), Laboratoire d’Océanographie de Villefranche, 06234 Villefranche-sur-Mer, France 3Institut de Recherche pour le Développement, UMR 5119 ECOLAG, Université Montpellier II, 34095 Montpellier Cedex 5, France 4Life Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA 5Departement of Freshwater Ecology, Faculty of Life Sciences, University of Vienna, Vienna, Austria 6IRD, UMR 5119 ECOLAG, Noumea Center, BP A5, NC-98848 Noumea, New Caledonia ABSTRACT: Viral abundance and processes in the water column and sediments are well studied for some systems; however, we know relatively little about virus–host interactions on particles and how particles influence these interactions. Here we review virus–prokaryote interactions on inorganic and organic particles in the water column. Profiting from recent methodological progress, we show that confocal laser scanning microscopy in combination with lectin and nucleic acid staining is one of the most powerful methods to visualize the distribution of viruses and their hosts on particles such as organic aggregates. Viral abundance on suspended matter ranges from 105 to 1011 ml–1.
    [Show full text]
  • © the Authors 2019. All Rights Reserved
    © The Authors 2019. All rights reserved. www.publish.csiro.au Index Note: Bold page numbers refer to illustrations. abalones 348 tenella 77 Acanthaster 134, 365, 367, 393 tenuis 272 mauritiensis 134, 135 white syndrome 152 planci 134 Acroporidae 136, 274–5, 276 solaris 367 Acrozoanthus australiae 264, 265 cf. solaris 134, 135, 144, 165, 270, 275, 339, 345, 366 acrozooid polyps 287 sp. A nomen nudum 134 Actaeomorpha 337 Acanthaster outbreaks 134–5 scruposa 335 causes 134–5, 144–6, 163–4, 165, 367 Acteonidae 349 management 135 Actinaria 257, 259–63 see also crown-of-thorns starfish (COTS) outbreaks anatomical features 258 Acanthasteridae 367 cnidae types in 260 Acanthastrea echinata 279 Actiniidae 263 Acanthella cavernosa 236, 238 Actinocyclidae 349 Acanthochitonidae 349 Actinodendron glomeratum 261 Acanthogorgia 302, 306 Actinopyga 369, 370 sp. 302 echinites 372 Acanthogorgiidae 302 miliaris 372 Acanthopargus spp. 126 sp. 372 Acanthopleura gemmata 107, 110 Aegiceras corniculatum 221, 222, 223 Acanthuridae 390, 396 Aegiridae 349 Acanthurus aeolid nudibranchs 346, 347, 349 blochii 396 Aeolidiidae 349 lineatus 395, 396 Aequorea 202 mata 393 Afrocucumis africana 368, 370 olivaceus 395 Agariciidae 275, 276 Acartia sp. 192 Agelas axifera 236, 238 accessory pigments 89 aggressive mimicry 401 Acetes 333 Agjajidae 349 sp. 192 agricultural activities, sediments and nutrients from 161–5 Achelata 333, 334–6 Ailsastra sp. 368 acorn barnacles 328 Aiptasia pulchella 260 acorn dog whelk 346, 347 Aipysurus 415, 416 Acropora 31, 33, 59, 135, 136, 150, 184, 211, 272, 273, 274–5, 339 duboisii 412, 413, 415 brown band disease 152 laevis 412, 413, 415, 416 clathrata 79 mosaicus 415 echinata 276 Alcyonacea 67, 283, 290–309 global diversity 186 Alcyonidium sp.
    [Show full text]
  • Viruses in Soil: Nano-Scale Undead Drivers of Microbial Life, Biogeochemical T Turnover and Ecosystem Functions ∗ Yakov Kuzyakov , Kyle Mason-Jones
    Soil Biology and Biochemistry 127 (2018) 305–317 Contents lists available at ScienceDirect Soil Biology and Biochemistry journal homepage: www.elsevier.com/locate/soilbio Viruses in soil: Nano-scale undead drivers of microbial life, biogeochemical T turnover and ecosystem functions ∗ Yakov Kuzyakov , Kyle Mason-Jones Department of Soil Science of Temperate Ecosystems, Department of Agricultural Soil Science, University of Goettingen, Goettingen, Germany ARTICLE INFO ABSTRACT Keywords: Viruses are ubiquitous in nature and have various ecological functions. Despite their very high abundance (up to Viral infection 1010 g−1), viruses in soil remain disregarded with just a few, mostly descriptive studies published to date. With Microbial death this review we focus on the probable functioning of viruses in soil and the consequences for microbial life and Maintenance and growth turnover, related mechanisms of biogeochemical cycling of carbon (C) and nutrients, and long-term C stabili- Microbial necromass zation. We draw on the limited literature for soil, the richer knowledge from aquatic ecosystems and sediments, Carbon sequestration mechanisms and evidence from pure culture studies. Carbon use efficiency Nutrient cycles Evidence from soil and other ecosystems indicate that the vast majority of soil bacteria are infected by phages C N P stoichiometry at any time. Consequently, we introduce and adapt five concepts for the role of phages in soil: (1) Viral Shunt, (2) ‘Forever Young’, (3) Viral Regulatory Gate of EXOMET, (4) C sequestration by microbial necromass stabilization, and (5) Microscale divergence of C/N/P stoichiometry. The ‘Viral Shunt’ accounts for the short-circuiting of trophic C and nutrient transfers by virus-induced mor- tality.
    [Show full text]
  • Microbial Production of Recalcitrant Dissolved Organic Matter
    View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Xiamen University Institutional Repository PERSPECTIVES as the dominant heterotrophic osmotrophs, OPINION they essentially monopolize the utilization of DOM. The diverse adaptive strategies of Microbial production of recalcitrant microorganisms for using newly fixed carbon are well known. However, there are dissolved organic matter: long-term large gaps in our knowledge of how these microorganisms interact with the large pool of DOM that seems to be recalcitrant. The carbon storage in the global ocean relationship of microorganisms with this RDOM pool is not well explored, despite Nianzhi Jiao, Gerhard J. Herndl, Dennis A. Hansell, Ronald Benner, great progress in our understanding of Gerhard Kattner, Steven W. Wilhelm, David L. Kirchman, Markus G. Weinbauer, the genomic diversity of marine microor- Tingwei Luo, Feng Chen and Farooq Azam ganisms and their in situ processes. The interaction between this RDOM pool and microorganisms is important, as DOM mol- Abstract | The biological pump is a process whereby CO2 in the upper ocean is fixed by primary producers and transported to the deep ocean as sinking biogenic ecules that are not degraded for extended particles or as dissolved organic matter. The fate of most of this exported material periods of time constitute carbon storage. In this Opinion article, we propose the is remineralization to CO , which accumulates in deep waters until it is eventually 2 microbial carbon pump as a conceptual ventilated again at the sea surface. However, a proportion of the fixed carbon is not framework to address the role of microbial mineralized but is instead stored for millennia as recalcitrant dissolved organic generation of RDOM and relevant carbon matter.
    [Show full text]
  • “Fungal Shunt”: Parasitic Fungi on Diatoms Affect Carbon Flow and Bacterial Communities in Aquatic Microbial Food Webs
    Characterizing the “fungal shunt”: Parasitic fungi on diatoms affect carbon flow and bacterial communities in aquatic microbial food webs Isabell Klawonna,1,2, Silke Van den Wyngaertb,3, Alma E. Paradaa, Nestor Arandia-Gorostidia, Martin J. Whitehousec, Hans-Peter Grossartb,d, and Anne E. Dekasa,2 aDepartment of Earth System Science, Stanford University, Stanford, CA 94305; bDepartment of Experimental Limnology, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, 12587 Berlin, Germany; cDepartment of Geosciences, Swedish Museum of Natural History, 104 05 Stockholm, Sweden; and dInstitute of Biochemistry and Biology, Potsdam University, 14476 Potsdam, Germany Edited by Edward F. DeLong, University of Hawaii at Manoa, Honolulu, HI, and approved March 26, 2021 (received for review February 3, 2021) Microbial interactions in aquatic environments profoundly affect Members of the fungal division Chytridiomycota, referred to global biogeochemical cycles, but the role of microparasites has as chytrids, can thrive as microparasites on phytoplankton cells in been largely overlooked. Using a model pathosystem, we studied freshwater (11, 13, 14) and marine systems (15–17), infecting up hitherto cryptic interactions between microparasitic fungi (chytrid to 90% of the phytoplankton host population (18–21). A recent Rhizophydiales), their diatom host Asterionella, and cell-associated concept, called mycoloop, describes parasitic chytrids as an in- and free-living bacteria. We analyzed the effect of fungal infections tegral part of aquatic food webs (22). Energy and organic matter on microbial abundances, bacterial taxonomy, cell-to-cell carbon are thereby transferred from large, often inedible phytoplankton transfer, and cell-specific nitrate-based growth using microscopy to chytrid zoospores, which are consumed by zooplankton (23–27).
    [Show full text]
  • Viral Ecology of Organic and Inorganic Particles in Aquatic Systems: Avenues for Further Research Mg Weinbauer, Y
    Viral ecology of organic and inorganic particles in aquatic systems: avenues for further research Mg Weinbauer, Y. Bettarel, R Cattaneo, B Luef, C. Maier, C. Motegi, P Peduzzi, Xavier Mari To cite this version: Mg Weinbauer, Y. Bettarel, R Cattaneo, B Luef, C. Maier, et al.. Viral ecology of organic and inorganic particles in aquatic systems: avenues for further research. Aquatic Microbial Ecology, Inter Research, 2009, 57, pp.321-341. 10.3354/ame01363. hal-02067402 HAL Id: hal-02067402 https://hal.archives-ouvertes.fr/hal-02067402 Submitted on 14 Apr 2021 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. Vol. 57: 321–341, 2009 AQUATIC MICROBIAL ECOLOGY Printed December 2009 doi: 10.3354/ame01363 Aquat Microb Ecol Published online November 24, 2009 Contribution to AME Special 3 ‘Rassoulzadegan at Villefranche-sur-Mer: 3 decades of aquatic microbial ecology’ OPENPEN ACCESSCCESS Viral ecology of organic and inorganic particles in aquatic systems: avenues for further research M. G. Weinbauer1, 2,*, Y. Bettarel3, R. Cattaneo1, B. Luef4, C. Maier1, C. Motegi1,
    [Show full text]