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Recent findings on phenoloxidases in bivalves
A Luna-Acosta1, Marine Breitwieser2, T Renault3
1Littoral Environnement et Sociétés (LIENSs), UMR 6250, CNRS-Université de La Rochelle, 2 rue Olympe de Gouges - F-17042, La Rochelle Cedex 01, France; Departamento de Ecología y Territorio, Facultad de Estudios Ambientales y Rurales (FEAR), Pontificia Universidad Javeriana, Transv. 4 No. 42-00, Bogota, Colombia.
Marine Pollution Bulletin
|July 5, 2017
Summary
Phenoloxidases (POs) are crucial for bivalve defense. This review highlights laccase enzymes as inducible, playing immune, antioxidant, and detoxification roles, potentially serving as biomarkers for environmental stress.
Area of Science:
- Marine Biology
- Biochemistry
- Immunology
Background:
- Melanin production involves complex biochemical pathways, including the pro-phenoloxidase (proPO) system and phenoloxidases (POs).
- Decreased PO activity in bivalves correlates with disease and mortality, suggesting a key role in host defense mechanisms.
Purpose of the Study:
- To review fundamental knowledge of the proPO system in bivalves.
- To summarize methods for assessing PO activities.
- To present findings on the inducible nature and roles of laccase enzymes in bivalves.
Main Methods:
- Literature review of proPO system and PO activity assessment in bivalves.
- Synthesis of laboratory and field study findings on laccase enzymes.
Main Results:
- Laccase, a type of PO in bivalves, is inducible.
- Laccase demonstrates immune, antioxidant, and detoxification functions in bivalves.
- Laccase may serve as a potential ecological biomarker for environmental stress.
Conclusions:
- The proPO system and specifically laccase enzymes are vital for bivalve health and defense.
- Inducible laccase activity highlights its multifaceted roles in bivalve physiology.
- Laccase's responsiveness to environmental stress suggests its utility as a biomarker.
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