PRokaryotes Interactions with Antarctic phytodetritus: a Micro- to macroscale voyage from the surface to the deep Ocean

Acronym
PRIAMO
Code
PNRA16_00103
Anno
2016
Research area
Life science
Specific research topic
Marine Microbial Ecology
Region of interest
Western Ross Sea
Project website
PI
Mauro Celussi
PI establishment
National Institute of Oceanography and Experimental Geophysics - OGS
Institutional website
http://www.ogs.it
Other institutions and subjects involved
University of Padova
Consistency of the research team
Project status
Completed
Main stations used
Nave
The project

The main objective of PRIAMO was to provide new information on the dynamics between prokaryotes and particulate organic carbon being exported to the deep sea. Specifically, the research aimed to:

  • investigate the metabolic changes (growth rates, C incorporation, organic matter degradation activities) that may affect prokaryotic communities in the presence of different concentrations of particulate organic matter.
  • Assess potential rates of algal-derived organic C consumption by structurally and functionally different prokaryotic communities (surface vs. bottom).
  • analyze the behavior from a microscale perspective of microorganisms in the presence of Antarctic planktonic microalgae
Images
  • Motivation, importance of research
    Objectives of the proposal
    Activities carried out and results achieved
    Products

    Publications:

    • Manna V, Malfatti F, Banchi E, Cerino F, De Pascale F, Franzo A, Schiavon R, Vezzi A, Del Negro P, Celussi M (2020) “Prokaryotic response to phytodetritus-derived organic material in epi- and mesopelagic Antarctic waters”. Frontiers in Microbiology 11 1242.
    • Manna V, Del Negro P, Celussi M (2019) “Modulation of hydrolytic profiles of cell-bound and cell-free exoenzymes in Antarctic marine bacterial isolates” Advances in Oceanography and Limnology 10 8240
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    Conferences:

    • 15th Symposium on Aquatic Microbial Ecology SAME (Zagreb, Croatia 3-8 September 2017): Poster “Antarctic phytoplankton communities’ composition determines the carbon metabolism of free-living prokaryotes while sinking to the ocean interior” M. Celussi, F. Malfatti, A. Franzo, F. Cerino, A. Baricevic, M. Smodlaka Tankovic, F. Relitti, M. Bazzaro, P. Del Negro
    • 16th Symposium of Aquatic Microbial Ecology SAME (Potsdam, Germany 1-6 September 2019): Poster  “Carbohydrate-active enzyme fingerprints in surface and deep-sea bacterial communities in the Ross Sea (Southern Ocean)” M. Celussi, F. Malfatti, F. Cerino, A. Franzo, E. Banchi, V. Manna, F. De Pascale, R. Schiavon, A. Vezzi.