MM51B:
Phytoplankton-Bacteria Interactions: From Microscales to Ocean Scales II


Session ID#: 37395

Session Description:
Interactions between phytoplankton and bacteria arguably represent the most important inter-organism association in aquatic environments. These relationships influence fundamental processes that include nutrient provision and regeneration, primary production, harmful blooms and biogeochemical cycling. Although typically studied over large spatiotemporal scales, emerging evidence indicates that this relationship is often governed by microscale interactions played out within the region immediately surrounding individual phytoplankton cells known as ‘the phycosphere.’ The exchange of metabolites and infochemicals at this interface governs phytoplankton-bacteria relationships, which span mutualism, commensalism antagonism, parasitism and competition. The importance of the phycosphere has been postulated for four decades, yet only recently have new technological and conceptual frameworks made it possible to start teasing apart the complex nature of this unique microbial habitat. In this session, we aim to provide a platform for researchers from diverse backgrounds to explore phytoplankton-bacteria interactions in the phycosphere and beyond, using model experimental systems, environmental data, modelling and new technologies.
Primary Chair:  Shady A Amin, New York University Abu Dhabi, Biology, Abu Dhabi, United Arab Emirates
Co-Chair:  Justin Seymour, University of Technology Sydney, Sydney, Australia
Moderators:  Justin Seymour, University of Technology Sydney, Sydney, Australia and Jean-Baptiste Raina, University of Technology Sydney, Sydney, Australia
Student Paper Review Liaison:  Cong Fei, Institute of Resource, Ecosystem and Environment of Agricultural,Nanjing Agricultural University, Nanjing, China
Index Terms:

4815 Ecosystems, structure, dynamics, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4840 Microbiology and microbial ecology [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4855 Phytoplankton [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4872 Symbiosis [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Cross-Topics:
  • BN - Biogeochemistry and Nutrients
  • ME - Marine Ecosystems

Abstracts Submitted to this Session:

Unicellular N2-Fixing Symbiosis: Evolution of Microbial Metabolic Interactions in the Open Ocean (312667)
Jonathan Zehr, University of California Santa Cruz, Santa Cruz, CA, United States, Maria del Carmen Muñoz-Marin, University of Cordoba, Department of Biochemistry and Molecular Biology, Cordoba, Spain, Irina Shilova, Second Genome, Inc., South San Francisco, CA, United States and Kendra Turk-Kubo, University of California Santa Cruz, Ocean Sciences, Santa Cruz, CA, United States
An In Situ Microfluidic Approach for Investigating the Chemical Interactions Between Phytoplankton and Bacteria (302971)
Jean-Baptiste Raina1, Bennett Lambert2, Christian Rinke3, Nahshon Siboni1, Francesco Rubino3, Gene W. Tyson3, Philip Hugenholtz3, Roman Stocker2 and Justin Seymour1, (1)University of Technology Sydney, Sydney, Australia, (2)ETH Zurich, Zurich, Switzerland, (3)University of Queensland, St Lucia, Australia
Defining the Diatom Core Microbiome (309970)
Ahmed A Shibl, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates and Shady A Amin, New York University Abu Dhabi, Biology, Abu Dhabi, United Arab Emirates
Investigating C transfer between diatoms and phycosphere-associated bacteria with stable isotopes and NanoSIMS (319460)
Xavier Mayali, Ty J Samo, Jeff Kimbrel and Peter K Weber, Lawrence Livermore National Laboratory, Livermore, CA, United States
Co-culture and Biogeography of Prochlorococcus and SAR11 (312565)
Jamie William Becker1,2, Shane Lahman Hogle3, Kali Rosendo3, Stephen J Giovannoni4 and Sallie W Chisholm3, (1)Haverford College, Biology, Haverford, PA, United States, (2)Massachusetts Institute of Technology, Civil and Environmental Engineering, Cambridge, MA, United States, (3)Massachusetts Institute of Technology, Cambridge, MA, United States, (4)Oregon State University, Department of Microbiology, Corvallis, OR, United States
Microbial Interactions Influence Stress Responses in Prochlorococcus (303488)
Steven Biller, Massachusetts Institute of Technology, Cambridge, MA, United States, Allison Coe, MIT, Cambridge, MA, United States, Sara Roggensack, MIT, MA, United States and Sallie W Chisholm, Massachusetts Institute of Technology, Civil and Environmental Engineering, Cambridge, MA, United States
Interactions Between the Diatom Thalassiosira pseudonana and Heterotrophic Bacterium Pelagibacter ubique Examined in Co-culture (307000)
Eric Moore, Cleo Davie-Martin, Stephen J Giovannoni and Kimberly Halsey, Oregon State University, Department of Microbiology, Corvallis, OR, United States
Whole genome comparative analyses uncover potential gene modules involved in host-bacteria interactions (307263)
Hans-Peter Grossart, Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Dep. 3, Experimental Limnology, Stechlin/OT Neuglobsow, Germany, Luca Zoccarato, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Experimental Limnology, Berlin, Germany and Daniel Sher, University of Haifa, Leon H. Charney School of Marine Sciences, Haifa, Israel
Metabolic Potential of Bacteria Associated with Genetically Distinct Diatom Populations (317674)
Olivia Marjorie Ahern1, Kerry Whittaker2, Gang Chen1, Dana Hunt3 and Tatiana A Rynearson1, (1)University of Rhode Island, Graduate School of Oceanography, Narragansett, RI, United States, (2)Sea Education Association, Woods Hole, MA, United States, (3)Duke University, Marine Sciences and Conservation, Beaufort, NC, United States

See more of: Microbiology and Molecular Ecology