MM44B:
Microbial Enzymes in Aquatic Environments: Environmental Control, Genomics, and Biogeochemical Functions Posters


Session ID#: 9489

Session Description:
Heterotrophic microorganisms process substrates by enzyme-catalyzed reactions inside and outside the cell. Multiple environmental factors in the marine environment, e.g. temperature, inorganic nutrient concentrations and organic matter availability, have a strong regulatory impact on the expression and activity of many catabolic enzymes, thereby modulating fluxes and concentrations of enzymatic products. Operating at microscale, enzymes in aquatic systems drive large-scale transformations that are central to elemental cycles and the decomposition of organic matter. In addition to well-established methods for rate measurements, recent methodological developments such as microscopic techniques and the quantification of single-cell activity, high-throughput assays and improved biochemical characterization are significantly advancing our understanding of the role of aquatic microbial enzymes.

This session invites contributions that investigate any aspect of extracellular enzymes in aquatic environments, from rivers and estuaries to the oceans and sediments. These may include (I) environmental factors that control enzyme activities in natural communities, (II) genomics of enzyme-producing organisms or species or (III) the role of enzymes in biogeochemical processes from microhabitats to the ecosystem scale. We aim to learn more about the wide spectrum of enzymatic reactions driven by marine microorganisms and the complexity of their biotic and abiotic regulation in natural aquatic systems.

Primary Chair:  Judith Piontek, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Chairs:  Sonja Endres, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, Andrew D Steen, University of Tennessee, Earth and Planetary Sciences, Knoxville, TN, United States and Maria Montserrat Sala, Institut de Ciències del Mar, CSIC, Barcelona, Spain
Moderators:  Judith Piontek1, Sonja Endres1, Andrew D Steen2 and Maria Montserrat Sala3, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany(2)University of Tennessee, Earth and Planetary Sciences, Knoxville, TN, United States(3)Institut de Ciències del Mar, CSIC, Barcelona, Spain
Student Paper Review Liaisons:  Andrew D Steen, University of Tennessee, Earth and Planetary Sciences, Knoxville, TN, United States and Maria Montserrat Sala, Institut de Ciències del Mar, CSIC, Barcelona, Spain
Index Terms:

4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4806 Carbon cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4840 Microbiology and microbial ecology [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4845 Nutrients and nutrient cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Co-Sponsor(s):
  • A - Air-sea Interactions and Upper Ocean Processes
  • B - Biogeochemistry and Nutrients
  • CT - Chemical Tracers, DOM and Trace Metals
  • ME - Marine Ecosystems

Abstracts Submitted to this Session:

 
MM44B-0484
Shedding light on the paradox of high alkaline phosphatase utilization at high end-product concentrations (Invited) (88524)
Federico Baltar1,2, Daniel Lundin2, Joakim Palovaara3, Thomas Reinthaler4, Gerhard J Herndl4 and Jarone Pinhassi2, (1)University of Otago, Department of Marine Science, New Zealand, (2)Linnaeus University, Centre for Ecology and Evolution in Microbial Model Systems, EEMiS, Sweden, (3)Wageningen University, Laboratory of Biochemistry, Netherlands, (4)University of Vienna, Dept. of Limnology and Bio-Oceanography, Vienna, Austria
 
MM44B-0485
Characterization of a New Ferritin Protein from the Polychaete Chaetopterus Sp. (88966)
Noah Hamlish1, Dimitri Deheyn2 and Evelien De Meulenaere2, (1)Wesleyan University, Molecular Biology and Biochemistry, Middletown, CT, United States, (2)University of California, San Diego, Scripps Institution of Oceanography, San Diego, CA, United States
 
MM44B-0486
Effects of Chemical Structure on Hydrolysis Pathways of Small Peptides in Coastal Seawater (89682)
Shuting Liu, The University of Texas at Austin, Marine Science Institute, Port Aransas, TX, United States, Nicolas Eduardo Reyna, University of Texas at Austin - Marine Science Institute, Port Aransas, TX, United States, Leila J Hamdan, George Mason University Fairfax, Fairfax, VA, United States and Zhanfei Liu, UT Austin, Port Aransas, TX, United States
 
MM44B-0487
Bacterial Activity and Organic Matter Turnover in Oxygen Deficient Waters of the Baltic Sea (89712)
Judith Piontek, Marie Massmig, Sonja Endres, Frederic A.C. Le Moigne, Hermann Bange and Anja Engel, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
 
MM44B-0488
Gene expression analysis of a critical enzyme in intermediary metabolism in oyster pathogen Perkinsus marinus . (89927)
Kristin Noell, University of Maryland Eastern Shore, Princess Anne, MD, United States
 
MM44B-0489
Proteolytic enzymes in seawater: contribution of prokaryotes and protists (Invited) (90882)
Yumiko Obayashi and Satoru Suzuki, Center for Marine Environmental Studies, Ehime University, Matsuyama, Japan
 
MM44B-0490
Nutrient and Trace Metal Controls on Alkaline Phosphatase in the Subtropical Ocean: Insights from Bioassays and Gene Expression (91045)
Claire Mahaffey, University of Liverpool, Earth, Ocean and Ecological Sciences, Liverpool, United Kingdom, Sarah Reynolds, University of Portsmouth, School of Earth & Environmental Sciences, Portsmouth, United Kingdom, Clare Elizabeth Davis, University of Liverpool, Earth, Oceans and Ecosystem Sciences, Liverpool, United Kingdom and Maeve Carroll Lohan, University of Southampton, Ocean and Earth Science, Southampton, SO14, United Kingdom
 
MM44B-0491
An Alkaline Phosphatase Paradox in a Shelf Sea (91134)
Clare Elizabeth Davis, University of Liverpool, Earth, Oceans and Ecosystem Sciences, Liverpool, United Kingdom and Claire Mahaffey, University of Liverpool, Earth, Ocean and Ecological Sciences, Liverpool, United Kingdom
 
MM44B-0492
Increased Particle Abundance is Associated with Higher Bacterial Activity in Deep Layers? (91387)
Maria Montserrat Sala1, Encarna Borrull2, Mireia Mestre2, Susana Sánchez-Del Río2, Carolina Antequera2, Eva Ortega-Retuerta2, Andrea Malits3, Francisco L Aparicio2, Pere Puig2, Josep Gasol2, Hans-Peter Grossart4 and Cèlia Marrasé1, (1)Institut de Ciències del Mar, CSIC, Barcelona, Spain, (2)Institut de Ciències del Mar-CMIMA (CSIC), Barcelona, Spain, (3)Centro Austral de Investigaciones Científicas (CADIC-CONICET), V9410CAB Ushuaia, Argentina, (4)Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Dep. 3, Experimental Limnology, Stechlin/OT Neuglobsow, Germany
 
MM44B-0493
Insight into metabolic potential of carbon-poor pelagic sediments derived from the abundance and composition of organic carbon (91844)
Emily R Estes1, Colleen M Hansel2, William D Orsi1, Chloe H Anderson3, Richard W Murray3, Scott D Wankel4, Dana Johnson5, Dennis Nordlund6, Arthur J Spivack7, Justine Sauvage8, Claire Cecelia McKinley9, Kira Homola10, Theodore Michael Present11, Robert A Pockalny12 and Steven D'Hondt13, (1)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (2)Woods Hole Oceanographic Institution, Department of Marine Chemistry and Geochemistry, Woods Hole, MA, United States, (3)Boston University, Earth and Environment, Boston, MA, United States, (4)Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, MA, United States, (5)Northwestern University, Evanston, IL, United States, (6)Stanford Synchrotron Radiation Lightsource, Menlo Park, CA, United States, (7)University of Rhode Island - GSO, Oceanography, Narragansett, RI, United States, (8)University of Rhode Island - GSO, Narragansett, RI, United States, (9)Texas A & M University College Station, College Station, TX, United States, (10)University of Rhode Island, Graduate School of Oceanography, Narragansett, RI, United States, (11)California Institute of Technology, Pasadena, CA, United States, (12)Univ Rhode Island, Narragansett, RI, United States, (13)University of Rhode Island, Narragansett, RI, United States
 
MM44B-0494
Strong Effects of a Shelfbreak Jet on Microbial Enzyme Activities (92067)
Adrienne Hoarfrost1, John Paul Balmonte2, Kai Ziervogel3, Sherif Ghobrial1, Glen Gawarkiewicz4 and Carol Arnosti1, (1)University of North Carolina at Chapel Hill, Department of Marine Sciences, Chapel Hill, NC, United States, (2)The University of North Carolina at Chapel Hill, Department of Marine Sciences, Chapel Hill, NC, United States, (3)University of New Hampshire, Ocean Process Analysis Laboratory, Durham, NH, United States, (4)WHOI, Woods Hole, MA, United States
 
MM44B-0495
The nature and function of microbial enzymes in subsurface marine sediments (92397)
Andrew D Steen and Jenna Schmidt, University of Tennessee, Earth and Planetary Sciences, Knoxville, TN, United States
 
MM44B-0496
Algal-bacteria Interactions and the Effects on Organic Matter Flux and Carbon Remineralization in the Ocean (92903)
Wilton Gray Burns1, Adrian Marchetti2, Brian L White3, Jennifer C. Prairie4 and Kai Ziervogel1, (1)University of New Hampshire, Ocean Process Analysis Laboratory, Durham, NH, United States, (2)University of North Carolina at Chapel Hill, Marine Sciences, Chapel Hill, NC, United States, (3)University of North Carolina at Chapel Hill, Department of Marine Science, Chapel Hill, NC, United States, (4)University of San Diego, Environmental and Ocean Sciences, San Diego, CA, United States
 
MM44B-0498
Enzyme-mediated Nutrient Regeneration Following Lysis of Synechococcus WH7803 (93388)
Aric H Mine, University of Chicago, Department of the Geophysical Sciences, Chicago, IL, United States, Maureen Coleman, University of Chicago, Geophysical Sciences, Chicago, IL, United States and Albert S Colman, The University of Chicago, Department of the Geophysical Sciences, Chicago, IL, United States
 
MM44B-0499
Detection of phosphohydrolytic enzyme activity through the oxygen isotope composition of dissolved phosphate (93810)
Albert S Colman, The University of Chicago, Department of the Geophysical Sciences, Chicago, IL, United States
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