Christophe CALVAYRAC

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Assistant Professor in Environmental Microbiology

PhD, Environmental Microbiology and Analytical Chemistry

laboratoire B.A.E – LBBM USR3579
Université de Perpignan Via Domitia, Bat. S,
52 av Paul Alduy 66860 Perpignan cedex
Tél : +33 (0) 4 68 66 22 54 Fax : +33 (0) 4 68 66 22 23

Expertise :

- Fate and behavior of pesticides in the environment,
- Microbial Ecology applied to biotransformation & biodegradation of pesticides in soil. Isolation, characterization and behavior of degradative bacterial strains within natural environments and microcosms. Assess to genetic capabilities of the isolates, mechanisms and genetics.
- Molecular virology : Development methods for the detection of Plum pox virus by real-time RT-PCR and Metabolomics.
- Scientific Expert at French Agency for Food, Environmental and Occupational Health & Safety (ANSES), Maisons-Alfort, France. Assessment of the risks related to REACh and CLP chemical substances.


Liste complète sur Google Scholar

Cinq principales:

C. Thiour-Mauprivez, F. Martin-Laurent, C. Calvayrac, L. Barthelmebs.
Design of a degenerate primer pair to target a bacterial functional community: The hppd bacterial gene coding for the enzyme targeted by herbicides, a study case. J. Microbiol. Methods. 170 (2020) 105839.

C. Thiour-Mauprivez, F. Martin-Laurent, C. Calvayrac, L. Barthelmebs.
Effects of herbicide on non-target microorganisms: towards a new class of biomarkers? Sci Total Environ. 684 (2019) 314–325.

C. Mallet, S. Romdhane, C. Loiseau, J. Béguet, F. Martin-Laurent, C. Calvayrac, L. Barthelmebs.
Impact of leptospermone, a natural β-triketone herbicide, on the fungal composition and diversity of two arable soils. Front. Microbiol. (2019). doi: 10.3389/fmicb.2019.01024

S. Romdhane, M. Devers-Lamrani, J. Beguet, C. Bertrand, C. Calvayrac, M.-V. Salvia, A. Ben Jrad, F. E. Dayan, A. Spor, L. Barthelmebs, F. Martin-Laurent .
Assessment of the ecotoxicological impact of natural and synthetic β-triketone herbicides on the diversity and activity of the soil bacterial community using omic approaches. Sci Total Environ, 651 (2019) 241-249.

P. Chandrashekhar, C. Calvayrac, Y. Zhou, S. Romdhane, J.-F. Cooper, F. E Dayan, C. Bertrand.
Environmental Metabolic Footprinting: a novel concept to assess the impact of a natural ß-triketone herbicide in soil. Sci Total Environ, Volumes 566–567 (2016) 552-558.



- Institute of Technology of Perpignan, Department of Applied Biology, University of Perpignan Via Domitia (UPVD). France.

- Faculty of Sciences, University of Perpignan Via Domitia

Contribution aux projets de Recherche:

2020-2023: LAGOON PROJECT (co-leader):
Evaluation of an innovative process of sustainable treatment at the microcosm scale on the workshop site of the Salses Leucate lagoon.
Development and quantification of the effect of new depollution processes for lagoon contaminants on the scale of experimental microcosms.
Funding: Federation for Energy Environment Research, University of Perpignan Via Domitia, FRANCE.

2018-2023 : ANTI-SHARK PROJECT & ID-SHARK PROJECT (co-leader) :
Development and evaluation of an innovative methodology for Plum Pox Potivirus (Sharka) detection.
Funding: AKiNaO , La Melba, Fondation UPVD, UPVD, FDGDON 66, Région Occitanie Pyrénées-Méditerranée, FRANCE.

2019-2020: LAGFOCUS PROJECT (leader):
Focus on the state of contamination of the Salses-Leucate lagoon (France): from the natural ecosystem to the laboratory.
Funding: Research Quality Bonus (BQR 2019) University of Perpignan Via Domitia, FRANCE.

2019-2020 : ATAX PROJECT (partnership):
Proof of concept of the efficiency of an antibacterial treatment using brominated compounds isolated from the red alga Asparagopsis taxiformis for the control of diseases in aquaculture.
Funding: AXLR SATT, Région Occitanie Pyrénées-Méditerranée, FRANCE.

2017-2020: DIAGSOL PROJECT (co-leader):
Development of a new functional marker for β-triketone herbicides exposure in agricultural soils.
Funding: Région Occitanie Pyrénées-Méditerranée & FEADER

2016-2017: PESTICIDES PROJECT (leader):
Program applied to pesticides studies: Characterization of Bacterial strains degrading benzoic acid derivatives from β-triketones herbicides.
Funding: University of Perpignan Via Domitia, Bonus Quality Research, FRANCE.

2013-2017: TRICETOX PROJECT (co-leader): Environmental impact of synthetic and natural β-triketones herbicides: detection, microbial adaptation, biodegradation and toxicity.
Funding: Agence Nationale de la Recherche (ANR), Programme Contaminants et Environnements: Santé, Adaptabilité, Comportements et Usages (CESA), FRANCE.


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Mise à jour le 10 juillet 2020