Frédéric Meuriot

Associate professor Research team: EcoPEPS e-mail: frederic.meuriot@unicaen.fr Tel: +33(0)2 31 56 66 35 Location: CAMPUS 1, Building J3, Door IR 061 Address: Université de Caen Normandie, CS 14032 Esplanade de la paix, 14032 CAEN CEDEX 5, France

Research topic 

Study of carbon and nitrogen resources management in ryegrass (Lolium perenne L.) as a response to a contrasted biotic and abiotic environment.

Regulation of the storage and mobilization of carbon and nitrogen resources

 This regulation is assessed on source tissues (leaf blades and leaf sheaths  of mature leaves) and sink tissues (elongating leaf bases) in order to bring better knowledge on the fine management mechanisms under abiotic stress (nycthemeral cycle,…) and biotic stress (total or partial defoliation, interaction with phyllospheric bacteria…) at the levels :

• molecular (via the expression of indicator genes of plant metabolism like sucrose transporters (LpSUT1 and LpSUT2)
• metabolic (via the anaysis of several compounds like amino acids, proteins, fructans, sucrose…)
• tissular and whole plant (via isotopic tracers like ¹³C and ¹⁵N and via confocal and electronic microscopy techniques)

Ph.D. co-leading 

• 2008-2011 : Alexandre BERTHIER (Director : MP Prud’homme) Title: Sucrose transport in ryegrass (Lolium perenne L.) : response to defoliation and light intensity
• 2017-2020 : Hans LONE-SANG (Director : MP Prud’homme) Title: Glucidic content variations and relative transcript expression of the sucrose transporter LpSUT1 as a response to the source to sink modulation in ryegrass (Lolium perenne L.)

Last publications 

• Lattanzi F, Ostler U, Wild M, Morvan-Bertrand A, Decau ML, Lehmeier C, Meuriot F, Prud’homme M-P, Schaufele R, Schnyder H (2012). Fluxes in central carbohydrate metabolism of source leaves in a fructan-storing C3 grass: rapid turnover and futile cycling of sucrose in continuous light under contrasted nitrogen nutrition status. Journal of Experimental Botany 63, 2363-2375. [IF: 6.3] doi:10.1093/jxb/ery211
• Furet PM, Berthier A, Decau ML, Morvan-Bertrand A, Prud’homme M-P, Noiraud-Romy N, Meuriot F (2012) Differential regulation of two sucrose transporters by defoliation and light conditions in perennial ryegrass. Plant Physiology and Biochemistry 61: 88-96. [IF: 3,05] doi:10.1016/j.plaphy.2012.09.011 
• Berthier A, Meuriot F, Dedaldechamp F, Lemoine R, Prud’homme M-P, Noiraud-Romy N (2014) Identification of a new sucrose transporter in rye-grass (LpSUT2): Effect of defoliation and putative fructose sensing. Plant Physiology and Biochemistry, 84:32-44. [IF: 3,05] doi:10.1016/j.plaphy.2014.09.002
• Meuriot F, Morvan-Bertrand A, Noiraud-Romy N, Decau ML, Escobar-Gutiérrez AJ, Gastal F, Prud'homme M-P (2018) Short-term effects of defoliation intensity on sugar remobilization and N fluxes in ryegrass. Journal of Experimental Botany 69: 3975-3986. [IF: 6.3] doi:10.1093/jxb/ery211
• Meuriot F, Prud’homme M-P, Noiraud‐Romy N (2022) Defoliation, wounding, and methyl jasmonate induce expression of the sucrose lateral transporter LpSUT1 in ryegrass (Lolium perenne L.). Physiologia Plantarum 174:e13744. doi:10.1111/ppl.13744
• Dalmasso M, Morvan-Bertrand A, Chagnot C, Goux D, Sesboué A, Meuriot F, Schlusselhuber M, Prud’homme M-P, Elie N, Desmasures N, Launay F, Noiraud-Romy N, Cretenet M (2022) Microbiota diversity of the phyllosphere of pastures plants. In Grassland at the heart of circular and sustainable food systems (eds. L. Delaby, R. Baumont, V. Brocard, S. Lemauviel-Lavenant, S. Plantureux, F. Vertes and J.L. Peyraud), Grassland Science in Europe, vol. 27, pp. 122-124.
• Meuriot F, Noiraud-Romy N, Elie N, Goux D, Morvan-Bertrand A, Cretenet M, Dalmasso M, Chagnot C. Prud’homme M-P (2022) Phyllospheric bacteria alter sugar content and sucrose transporter expression in rye-grass. In Grassland at the heart of circular and sustainable food systems (eds. L. Delaby, R. Baumont, V. Brocard, S. Lemauviel-Lavenant, S. Plantureux, F. Vertes and J.L. Peyraud), Grassland Science in Europe, vol. 27, pp. 222-224.
• Noiraud-Romy N, Berthier A, Meuriot F, Prud'homme M-P (2024) Sucrose-phosphate synthase and sucrose synthase contribute to refoliation in ryegrass, a grassland fructan-accumulating species. Physiologia Plantarum,176, e14427 https://doi.org/10.1111/ppl.14427

Other activities 

Teaching (Licence 1 to Master 1) in Plant Physiology and cellular biology (Univ. of Caen-Normandie) as well as in Agronomy and Plant biochemistry (ESIX, Ecole Supérieure d’Ingénieurs Agro-Alimentaire de Caen

Past cursus 

Ph.D. entitled : « Etude et modélisation des effets de l’intensité de la coupe et du niveau des réserves organiques initiales sur la dynamique de l’azote (et du carbone) au cours de la repousse chez la luzerne (Medicago sativa L.) ». Juin 2004.