{"id":1525,"date":"2024-01-03T11:33:25","date_gmt":"2024-01-03T16:33:25","guid":{"rendered":"https:\/\/mote.org\/?post_type=program&p=1525"},"modified":"2024-12-12T20:46:29","modified_gmt":"2024-12-13T01:46:29","slug":"marine-microbiology","status":"publish","type":"program","link":"https:\/\/mote.org\/research\/program\/marine-microbiology\/","title":{"rendered":"Marine Microbiology"},"content":{"rendered":"

The Marine Microbiology Program studies microscopic living things (called microorganisms or microbes), their roles in the marine environment and their ability to produce natural products that can benefit marine animal and human health.<\/p>\n

The oceans cover over 70% of the Earth\u2019s surface and are home to the most productive and biologically diverse ecosystems in the world. These diverse ecosystems harbor diverse life, including microscopic organisms that must compete for resources in places like coral reefs and deep-sea communities. This competition promotes the evolution of many different natural chemicals called secondary metabolites, or marine natural products.\u00a0<\/span><\/p>\n

Mote scientists work to identify bioactive marine natural products produced by marine microorganisms with the goal to discover new sources of medicines from the sea. Read more in our Current Research section below.\u00a0\u00a0<\/span><\/p>\n

Over the years, Mote has advanced a wide variety of other marine microbiology studies through this program and several others. Together, these diverse Mote programs have advanced the scientific understanding of multiple different animal species, marine ecosystems and potential human health applications. Learn more by visiting these sections below: Previous Research & Related Programs.<\/p>\n\n

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\n \n \"\" <\/a>\n <\/div>\n
\n Microbial isolates cultured by Mote scientists. Photo Credit: Hayley Rutger\/Mote Marine Laboratory <\/figcaption>\n <\/figure>\n
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\n \n \"\" <\/a>\n <\/div>\n
\n Deep habitat in the Gulf of Mexico investigated by NOAA's Mesophotic and Deep Benthic Communities Expeditions. Credit: Marine Applied Research and Exploration, NOAA. Such deep habitats are sources of marine microbes being studied by Mote scientists as sources of new sources of medicine. <\/figcaption>\n <\/figure>\n
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\n \n \"Dr. <\/a>\n <\/div>\n
\n Dr. Kirstie Francis, Postdoctoral Research Fellow in Mote's Marine Microbiology Program, focuses on molecular microbiology. Credit: Hayley Rutger \/ Mote Marine Laboratory <\/figcaption>\n <\/figure>\n
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\n \n \"Marine <\/a>\n <\/div>\n
\n Marine microbes being cultured by Mote scientists in an effort to seek new ocean-derived sources of medicines. Credit: Hayley Rutger\/Mote Marine Laboratory <\/figcaption>\n <\/figure>\n <\/div>\n\n \n

 <\/p>\n

Program Details<\/h2>\n
\n \n Current Research\n <\/span>\n <\/span>\n <\/div>\n
\n
\n

Molecular Microbiology<\/h4>\n

The goal of the molecular microbiology laboratory is to identify bioactive marine natural products produced by marine microorganisms. To accomplish this, Mote Postdoctoral Research Fellow Dr. Kirstie Francis is working on maintaining and expanding the Mote Microbial Library. From these microorganisms, she will generate an enriched fraction library from microbial extracts to screen for a variety of bioactivities for drug discovery.\u00a0<\/span><\/p>\n

NOAA Cruises & Deep Sea Microbes<\/h4>\n

Before becoming a Mote Postdoctoral Research Fellow, Dr. Kirstie Francis previously completed a fellowship through the National Academies of Science\u2019s Gulf Research Program, where she worked as a data manager for NOAA National Centers for Environmental Information (NCEI) on the Mesophotic and Deep Benthic Communities (MDBC) portfolio. Through continuing collaboration with NOAA and USGS she has been able to join the MDBC team on two research cruises surveying sediment communities up to 2,000 meters deep in the Gulf of Mexico. From this effort she has isolated nearly 400 strains of microscopic life from deep-sea sediments and added them to the Mote Microbial Library so they can be mined for new potential sources of medicine.<\/span><\/p>\n <\/div>\n <\/div>\n <\/div>

\n \n Previous Research\n <\/span>\n <\/span>\n <\/div>\n
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Using field assessment and microbiological and molecular techniques, this program has examined marine microbes for pathogenesis (ability to cause disease) and for their production of beneficial substances, such as new sources of antibiotics.<\/p>\n

For example, Mote scientists have\u00a0 helped to demonstrate that bacterial associates of corals protect the host by producing antibiotics and other beneficial compounds\/nutrients; that microbial associates communicate with the coral host and other microbes to order events on the coral surface, and that there is likely to be a very complex symbiosis (a mutually beneficial relationship) between the coral, its resident algae called zooxanthellae (Symbiodinium<\/em> spp.) and associated bacteria.<\/p>\n

Mote scientists have also shown that corals harbor beneficial microbes that shift to pathogen dominance when temperatures increase (Ritchie, 2006) and in collaboration with researchers at Cornell University, have developed a computational model that simulates bacterial community dynamics within the coral mucus under tens of thousands of environmental conditions (Mao-Jones et al, 2010).<\/p>\n

Research within this program describes bacterial symbionts of the coral endosymbiont, Symbiodinium<\/em> species, and has found numerous members of the Roseobacteriales group that are specifically present in association with Symbiodinium<\/em> in culture. These bacteria increase growth rates of Symbiodinium<\/em> spp., produce quorum sensing (bacterial communication) compounds and increase coral larvae settlement rates.<\/p>\n

One member of this bacterial group has been shown to produce gene transfer agents (GTAs) that may facilitate rapid adaptation to environmental change. Mote and its partners from the University of South Florida’s College of Marine Science have shown that this type of genome transfer occurs 100 million times more frequently on coral reefs than in other parts of the ocean (McDaniel et. al., 2010) and facilitates biological processes including enhanced larvae survival and settlement. In collaboration with researchers at King Abdula University of Science and Technology (KAUST), the complete genome has been sequenced for one of these beneficial bacteria.<\/p>\n

Mote has additionally sequenced the transcriptomes and metatranscriptomes of coral larvae and bacterial biofilms (used as settlement substrate) in order to determine the effect of GTAs on coral and bacterial gene expression and bacterial community composition. Data from this effort is currently being analyzed.<\/p>\n

Program scientists have also focused on the discovery of novel compounds from shark and stingray epidermal bacteria that display antimicrobial activity along with the development of probiotics for dolphins.<\/p>\n <\/div>\n <\/div>\n <\/div>

\n \n Related Programs\n <\/span>\n <\/span>\n <\/div>\n
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\n

Examples of other Mote programs that have involved marine microbiology research (this list is not exhaustive):<\/p>\n

    \n
  • Coral Health & Disease Research<\/li>\n
  • Marine Biomedical Research<\/li>\n
  • Marine Immunology<\/li>\n
  • Marine & Freshwater Aquaculture Research<\/li>\n<\/ul>\n <\/div>\n <\/div>\n <\/div>
    \n \n Grants Received\n <\/span>\n <\/span>\n <\/div>\n
    \n
    \n
      \n
    • ONR. $100,000. Development of Probiotics for Dolphins. 2013-2014.<\/li>\n
    • NSF\/MRI. $103,000. Collaborative Research: Development of a Multi-User Molecular Facility at Mote Marine Laboratory\u2019s Tropical Research Laboratory. August 2011-July 2012.<\/li>\n
    • Department of Defense. $270,000. Novel Compounds From Shark and Stingray Epidermal Mucus With Antimicrobial Activity Against Wound Infection Pathogens. January 2011-December 2013.<\/li>\n
    • The Dart Foundation. $540,000. Corals and Climate Change. January 2010-December 2016.<\/li>\n
    • Florida Protect Our Reefs Funding. $176,000. Symbiosis and Gene Transfer in the Reef Environment. May 2009-April 2012.<\/li>\n
    • Florida Protect Our Reefs Funding. $25,000. Deepwater Horizon Oil Effects on Corals. August 2010-July 2011.<\/li>\n
    • The Nature Conservancy. $18,000. A Rapid Response to Cold Water Stress on Corals: Monitoring Coral Health and Immunity Across Habitat Gradients in the Lower Florida Keys. November 2010-October 2011.<\/li>\n
    • Florida Sea Grant. $44,000. Coral Associated Probiotic Bacteria: Exploring Mechanisms for Potential Applications in Biocontrol of Coral Diseases. February 2008-January 2010.<\/li>\n
    • NOAA\/NMFS Coral Reef Conservation Grant. $41,000. Seasonal Variability in Coral Immunity in the Florida Keys, the US Virgin Islands and Puerto Rico. September 2007-December 2009.<\/li>\n
    • NOAA. $140,000. Genetic Fingerprinting for Accountability in Coral Aquaculture. 2005-2009.<\/li>\n
    • Florida Protect Our Reefs Funding. $41,000. Linking Coral Microbial Populations and Water Column Dissolved Organic Matter Coral DOM microbes. May 2008-April 2009.<\/li>\n
    • Department of Environmental Protection\/FWC. $240,000. Microbial Community Dynamics of Florida Red Tide Events. 2006-2009.<\/li>\n
    • Disney Wildlife Funds. $18,000. Protection of Floridas Threatened Corals. July 2007-June 2009.<\/li>\n
    • NOAA\/NMFS Coral Reef Conservation Grant. $41,000. Seasonal Variability in Coral Immunity in the Florida Keys, the US Virgin Islands, and Puerto Rico.<\/li>\n
    • South West Florida Water Management District. $44,000. Coral Spawning Expedition in the Florida Keys. Summer 2007.<\/li>\n
    • National Geographic Society. $20,000. Master Manipulators: Corals Protect Themselves by Encouraging Bacterial Information Wars. April 2007-March 2008.<\/li>\n
    • The Charles A. and Anne Morrow Lindbergh Foundation. $10,000. Harnessing the Potential of Coral Associated Beneficial Bacteria for Sustainable Biological Control of Coral Diseases. 2007-2008.<\/li>\n
    • Florida Protect Our Reef Funding. $76,000. Temporal Variation in Beneficial Microbial Associates of Acropora Palmata in the Florida Keys. 2006-2009.<\/li>\n
    • NOAA\/In house Funding. $40,000. Baseline Coral Health Assessment in the Flower Garden Banks National Marine Sanctuary. 2005-2006.<\/li>\n
    • NOAA\/NMS\/Mini-Grants. $70,000. Microbial Community Structure of Acropora Palmata in the Florida Keys. 2005-2007.<\/li>\n
    • NOAA. $140,000. Genetic Fingerprinting for Accountability in Coral Aquaculture. 2005-2009.<\/li>\n
    • NOAA\/FKNMS. $25,000. Baseline Microbial Community Structure of Healthy Acropora Palmata in the Florida Keys. 2004-2005.<\/li>\n
    • Munson Foundation. $20,000. The Role of Microbial Communities in Coral Health and Disease. 2005-2008.<\/li>\n
    • Triad Foundation. $10,000. Start-up\/Coral Reef Ecology Program. 2004.<\/li>\n<\/ul>\n <\/div>\n <\/div>\n <\/div><\/div>\n

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