Cellular Damage of Bacteria Attached to Senescent Phytoplankton Cells as a Result of the Transfer of Photochemically Produced Singlet Oxygen: A Review

Several studies set out to explain the presence of high proportions of photooxidation products of cis-vaccenic acid (generally considered to be of bacterial origin) in marine environments. These studies show that these oxidation products result from the transfer of singlet oxygen from senescent phyt...

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Bibliographic Details
Published in:Microorganisms (Basel) 2023-06, Vol.11 (6), p.1565
Main Authors: Rontani, Jean-François, Bonin, Patricia
Format: Article
Language:English
Subjects:
Active oxygen
Algae
attached bacteria
Bacteria
Carbon
Carotenoids
Cell physiology
Chlorophyll
Environmental Sciences
Fatty acids
Hypotheses
Irradiance
Irradiation
Lifetime
Marine environment
Marine phytoplankton
Membranes
mineral matrices
Oceans
Oxidation
Oxidation-reduction reaction
oxidative damage
Oxygen
Photodegradation
Photooxidation
Physiological aspects
phytodetritus
Phytoplankton
Plankton
Polar environments
Radiation
Review
Senescence
Silica
Singlet oxygen
singlet oxygen transfer
solar irradiance
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Summary:Several studies set out to explain the presence of high proportions of photooxidation products of cis-vaccenic acid (generally considered to be of bacterial origin) in marine environments. These studies show that these oxidation products result from the transfer of singlet oxygen from senescent phytoplankton cells to the bacteria attached to them in response to irradiation by sunlight. This paper summarizes and reviews the key findings of these studies, i.e., the demonstration of the process at work and the effect of different parameters (intensity of solar irradiance, presence of bacterial carotenoids, and presence of polar matrices such as silica, carbonate, and exopolymeric substances around phytoplankton cells) on this transfer. A large part of this review looks at how this type of alteration of bacteria can affect the preservation of algal material in the marine environment, especially in polar regions where conditions drive increased transfer of singlet oxygen from sympagic algae to bacteria.
ISSN:2076-2607
2076-2607
DOI:10.3390/microorganisms11061565