Frédéric Verret

@article{mock_100_2026,

title = {The 100 Diatom Genomes Project},

author = {Thomas Mock and Gust Bilcke and Eliott Flaum and Shunan Fu and Lilian Hoch and Kevin Moog and Nadine Rijsdijk and Elizabeth C. Ruck and Ian W. Bishop and Carole Duchene and Reuben Gilbertson and Amanda Hopes and Christopher Johns and Francesco Manfellotto and Wade R. Roberts and Nigel Belshaw and Udita Chandola and Peter Chaerle and Olga Chepurnova and Daan Deleu and Sofie D’hondt and Federica Di Costanzo and Omaya Dudin and Serena Flori and Trupti Gaikwad and Agnes Groisillier and Andrea Hall and Pengyu Ji and Louis J. Lavier-Aydat and William H. Lewis and Samuel Menicot and Eveline Pinseel and Eléonore Pottier and Krisztina Sarkozi and Arianna Smerilli and Jan Strauss and Sander Thierens and Andrew Toseland and Yousef Touhami and Robert Utting and Michiel Van Bel and Cock Van Oosterhout and Yue Wu and Feng Yang and Erika Allhusen and John J. Bolton and Chris Bowler and Thorsten Brinkhoff and Anja Poehlein and Tim Brovarone and Nansheng Chen and Greg Clark and Matthew D. Clark and Dario Copetti and Zongmei Cui and Beini Deng and Jianbo Jian and Uwe John and Anne D. Jungblut and JiHeon Kang and Jon Bent Kristoffersen and JunMo Lee and Shuya Liu and David G. Mann and Linda Medlin and Vincent Moulton and Jelena Radojicic and Shinya Sato and Rosa Trobajo and Klara Wolf and Norico Yamada and Naihao Ye and Libin Zhang and Yunyun Zhuang and Gautam Dey and Valeria Di Dato and Katherine Helliwell and Marianne Jaubert and Peter G. Kroth and Marina Montresor and Giovanna Romano and Tatiana A. Rynearson and Jayson Talag and Klaus U. Valentin and Flora Vincent and Ross F. Waller and Glen Wheeler and Andrew J. Alverson and Kerrie Barry and LoriBeth Boston and Angela Falciatore and Maria Immacolata Ferrante and Jie Guo and Jane Grimwood and Richard Hayes and Andrei Herdean and Jerry Jenkins and Min Kim and Wiebe Hcf Kooistra and Alan Kuo and Anna Lipzen and Nicole Poulsen and Jeremy Schmutz and Leïla Tirichine and Klaas Vandepoele and Frédéric Verret and Wim Vyverman and Igor V. Grigoriev},

url = {https://dx.plos.org/10.1371/journal.pbio.3003947

/wp-content/uploads/2026/09/2026-Mock-T-PLOSBiol-39.pdf},

doi = {10.1371/journal.pbio.3003947},

issn = {1545-7885},

year  = {2026},

date = {2026-09-25},

urldate = {2026-09-01},

journal = {PLOS Biology},

volume = {24},

number = {9},

pages = {e3003947},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{sebahi_enhanced_2026,

title = {Enhanced carotenoid production in a novel \textit{Chlorella vulgaris} isolate under nitrogen limitation: dynamics of pigment diversity across growth phases},

author = {Rahma Sebahi and Frédéric Verret and Manolis Mandalakis and Mohamed Bey Baba Hamed},

url = {https://www.tandfonline.com/doi/full/10.1080/26388081.2026.2671068

/wp-content/uploads/2026/07/2026-Sebahi-Applied-Phycology-29.pdf

},

doi = {10.1080/26388081.2026.2671068},

issn = {2638-8081},

year  = {2026},

date = {2026-07-16},

urldate = {2026-07-16},

journal = {Applied Phycology},

volume = {7},

number = {1},

pages = {2671068},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{grypioti_dicerdependent_2023,

title = {Dicer‐dependent heterochromatic small textlessspan style=},

author = {Emilia Grypioti and Hugues Richard and Nikoleta Kryovrysanaki and Marianne Jaubert and Angela Falciatore and Frédéric Verret and Kriton Kalantidis},

url = {https://imbbc.hcmr.gr/wp-content/uploads/2023/12/2023-Grypioti-E-New-Phytol-63.pdf

https://nph.onlinelibrary.wiley.com/doi/10.1111/nph.19429},

doi = {10.1111/nph.19429},

issn = {0028-646X, 1469-8137},

year  = {2023},

date = {2023-12-11},

urldate = {2023-12-11},

journal = {New Phytologist},

pages = {nph.19429},

abstract = {Summary 

 

 

 

 Diatoms are eukaryotic microalgae responsible for nearly half of the marine productivity. RNA interference (RNAi) is a mechanism of regulation of gene expression mediated by small RNAs (sRNAs) processed by the endoribonuclease Dicer (DCR). To date, the mechanism and physiological role of RNAi in diatoms are unknown. 

 

 

 

 We mined diatom genomes and transcriptomes for key RNAi effectors and retraced their phylogenetic history. We generated DCR knockout lines in the model diatom species 

 Phaeodactylum tricornutum 

 and analyzed their mRNA and sRNA populations, repression‐associated histone marks, and acclimatory response to nitrogen starvation. 

 

 

 

 

 Diatoms presented a diversification of key RNAi effectors whose distribution across species suggests the presence of distinct RNAi pathways. 

 P. tricornutum 

 DCR was found to process 26–31‐nt‐long double‐stranded sRNAs originating mostly from transposons covered by repression‐associated epigenetic marks. In parallel, 

 P. tricornutum 

 DCR was necessary for the maintenance of the repression‐associated histone marks H3K9me2/3 and H3K27me3. Finally, PtDCR‐KO lines presented a compromised recovery post nitrogen starvation suggesting a role for 

 P. tricornutum 

 DCR in the acclimation to nutrient stress. 

 

 

 

 

 Our study characterized the molecular function of the single DCR homolog of 

 P. tricornutum 

 suggesting an association between RNAi and heterochromatin maintenance in this model diatom species.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{amaral_ion-driven_2023,

title = {Ion-driven communication and acclimation strategies in microalgae},

author = {Raquel Amaral and Damiano Duci and Francisco C Cotta and Felipe L Bacellar and Soraia Oliveira and Frédéric Verret and Kamal Asadi and Lode K J Vandamme and Nuno M Reis and Lee D Bryant and David Tosh and Jean-Luc Mouget and Rupert Perkins and Paulo R F Rocha},

url = {https://imbbc.hcmr.gr/wp-content/uploads/2023/09/2023-Amaral-R-Chem-Engineer-47.pdf

https://linkinghub.elsevier.com/retrieve/pii/S1385894723037166},

doi = {10.1016/j.cej.2023.144985},

issn = {13858947},

year  = {2023},

date = {2023-09-11},

urldate = {2023-09-14},

journal = {Chemical Engineering Journal},

volume = {473},

pages = {144985},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{gabed_what_2022,

title = {What Was Old Is New Again: The Pennate Diatom Haslea ostrearia (Gaillon) Simonsen in the Multi-Omic Age},

author = {Noujoud Gabed and Frédéric Verret and Aurélie Peticca and Igor Kryvoruchko and Romain Gastineau and Orlane Bosson and Julie Séveno and Olga Davidovich and Nikolai Davidovich and Andrzej Witkowski and Jon Bent Kristoffersen and Amel Benali and Efstathia Ioannou and Aikaterini Koutsaviti and Vassilios Roussis and Hélène Gâteau and Suliya Phimmaha and Vincent Leignel and Myriam Badawi and Feriel Khiar and Nellie Francezon and Mostefa Fodil and Pamela Pasetto and Jean-Luc Mouget},

url = {https://imbbc.hcmr.gr/wp-content/uploads/2022/05/2022-Gabed-N-Mar-Drugs-33.pdf

https://www.mdpi.com/1660-3397/20/4/234},

doi = {10.3390/md20040234},

issn = {1660-3397},

year  = {2022},

date = {2022-01-01},

urldate = {2022-05-09},

journal = {Marine Drugs},

volume = {20},

number = {4},

pages = {234},

abstract = {The marine pennate diatom Haslea ostrearia has long been known for its characteristic blue pigment marennine, which is responsible for the greening of invertebrate gills, a natural phenomenon of great importance for the oyster industry. For two centuries, this taxon was considered unique; however, the recent description of a new blue Haslea species revealed unsuspected biodiversity. Marennine-like pigments are natural blue dyes that display various biological activities—e.g., antibacterial, antioxidant and antiproliferative—with a great potential for applications in the food, feed, cosmetic and health industries. Regarding fundamental prospects, researchers use model organisms as standards to study cellular and physiological processes in other organisms, and there is a growing and crucial need for more, new and unconventional model organisms to better correspond to the diversity of the tree of life. The present work, thus, advocates for establishing H. ostrearia as a new model organism by presenting its pros and cons—i.e., the interesting aspects of this peculiar diatom (representative of benthic-epiphytic phytoplankton, with original behavior and chemodiversity, controlled sexual reproduction, fundamental and applied-oriented importance, reference genome, and transcriptome will soon be available); it will also present the difficulties encountered before this becomes a reality as it is for other diatom models (the genetics of the species in its infancy, the transformation feasibility to be explored, the routine methods needed to cryopreserve strains of interest).},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{gastineau_two_2020,

title = {Two new bacilladnaviruses associated with the diatom Haslea ostrearia},

author = {Romain Gastineau and Claude Lemieux and Monique Turmel and Emilia Grypioti and Frédéric Verret and Antonios Makris and Anagnostis Argiriou and Dimitris Kafetzopoulos and Irina Stratidaki and Gregory Carrier and Boris Jacquette and Jean-Luc Mouget},

url = {https://www.tandfonline.com/doi/full/10.1080/09670262.2020.1748723},

doi = {10.1080/09670262.2020.1748723},

issn = {0967-0262, 1469-4433},

year  = {2020},

date = {2020-06-01},

urldate = {2020-08-18},

journal = {European Journal of Phycology},

pages = {1--10},

abstract = {Haslea ostrearia (Gaillon) Simonsen is famous among diatoms for producing a blue pigment. Genome sequencing of different strains of H. ostrearia led to the discovery of the complete genomes of two new bacilladnaviruses, HOV-148 and HOV-235. The DNA sequences of these viruses were identified in H. ostrearia strains that had been maintained for several years in a culture collection. Some of these strains are the products of in vitro episodes of auxosporulation and thus have never been in contact with their natural biotope. At 4567 and 4538 bp, the HOV-148 and HOV-235 genomes are shorter than those of most diatom-infecting viruses known to date. They each contain four open reading frames and display highest similarities with sequences from viruses found in a gastropod from New Zealand, a proximity confirmed by phylogenetic analysis. HOV-148 and HOV-235 were identified in three clones of H. ostrearia that were collected in oyster ponds from distinct locations in the Bay of Bourgneuf (France). Given that our search for similar viral sequences in genomic data derived from other sub-populations or species of the genus Haslea throughout the world was unsuccessful, we hypothesize that these viruses could have a link with the peculiar biotope of the oyster ponds.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}