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Author Christophe Roux

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In silico definition of new ligninolytic peroxidase sub-classes in fungi and putative relation to fungal life style.

Catherine Mathé, Nizar Fawal, Christophe Roux, Christophe Dunand,

Ligninolytic peroxidases are microbial enzymes involved in depolymerisation of lignin, a plant cell wall polymer found in land plants. Among fungi, only Dikarya were found to degrade lignin. The increase of available fungal genomes allows performing an expert annotation of lignin-degrading peroxidase encoding sequences with a particular focus on Class ... Read more >>

Sci Rep (Scientific reports)
[2019, 9(1):20373]

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Imbalanced Regulation of Fungal Nutrient Transports According to Phosphate Availability in a Symbiocosm Formed by Poplar, Sorghum, and Rhizophagus irregularis.

Silvia Calabrese, Loic Cusant, Alexis Sarazin, Annette Niehl, Alexander Erban, Daphnée Brulé, Ghislaine Recorbet, Daniel Wipf, Christophe Roux, Joachim Kopka, Thomas Boller, Pierre-Emmanuel Courty,

In arbuscular mycorrhizal (AM) symbiosis, key components of nutrient uptake and exchange are specialized transporters that facilitate nutrient transport across membranes. As phosphate is a nutrient and a regulator of nutrient exchanges, we investigated the effect of P availability to extraradical mycelium (ERM) on both plant and fungus transcriptomes and ... Read more >>

Front Plant Sci (Frontiers in plant science)
[2019, 10:1617]

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Development of Ovarian Tissue Autograft to Restore Ovarian Function: Protocol for a French Multicenter Cohort Study.

Jean-Baptiste Pretalli, Sophie Frontczak Franck, Lionel Pazart, Christophe Roux, Clotilde Amiot, ,

BACKGROUND:Sterility is a major late effect of radiotherapy and chemotherapy treatments. Iatrogenic sterility is often permanent and greatly impacts long-term quality of life. Ovarian tissue cryopreservation (OTC) performed before gonadotoxic treatments with subsequent autograft is a method of fertility preservation available for girls and women. Its application in prepubertal girls ... Read more >>

JMIR Res Protoc (JMIR research protocols)
[2019, 8(9):e12944]

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Comparative genomics of Rhizophagus irregularis, R. cerebriforme, R. diaphanus and Gigaspora rosea highlights specific genetic features in Glomeromycotina.

Emmanuelle Morin, Shingo Miyauchi, Hélène San Clemente, Eric C H Chen, Adrian Pelin, Ivan de la Providencia, Steve Ndikumana, Denis Beaudet, Mathieu Hainaut, Elodie Drula, Alan Kuo, Nianwu Tang, Sébastien Roy, Julie Viala, Bernard Henrissat, Igor V Grigoriev, Nicolas Corradi, Christophe Roux, Francis M Martin,

Glomeromycotina is a lineage of early diverging fungi that establish arbuscular mycorrhizal (AM) symbiosis with land plants. Despite their major ecological role, the genetic basis of their obligate mutualism remains largely unknown, hindering our understanding of their evolution and biology. We compared the genomes of Glomerales (Rhizophagus irregularis, Rhizophagus diaphanus, ... Read more >>

New Phytol. (The New phytologist)
[2019, 222(3):1584-1598]

Cited: 4 times

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ExpressWeb: A Web application for clustering and visualization of expression data

Bruno Savelli, Sylvain Picard, Christophe Roux, Christophe Dunand,

ABSTRACT The recent explosion of transcriptomics and proteomic data have resulted in vast amounts of datasets without connection and sometime too large to be easily analysed. Integration between datasets and analysis of an extracted datasets are limiting factors which need to be solved in order to make full use of ... Read more >>

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Deciphering the phylogeny of violets based on multiplexed genetic and metabolomic approaches.

Justine Chervin, Thierry Talou, Marjorie Audonnet, Bernard Dumas, Laurent Camborde, Marie-Thérèse Esquerré-Tugayé, Christophe Roux, Guillaume Cabanac, Guillaume Marti,

Molecular phylogenetics based on nucleotide sequence comparisons has profoundly influenced plant taxonomy. A comprehensive chemotaxonomical approach based on GC-MS and UHPLC-HRMS profiling was evaluated for its ability to characterize a large collection of plants all in the violet family Violaceae (n = 111) and thus decipher the taxonomy. A thorough identification of ... Read more >>

Phytochemistry (Phytochemistry)
[2019, 163:99-110]

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Correction to: Identification of new signalling peptides through a genome-wide survey of 250 fungal secretomes.

Morgane Le Marquer, Hélène San Clemente, Christophe Roux, Bruno Savelli, Nicolas Frei Dit Frey,

Following the publication of this article [1] the authors noted that the image in Fig. 1 was incorrect. ... Read more >>

BMC Genomics (BMC genomics)
[2019, 20(1):94]

Cited: 1 time

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Identification of new signalling peptides through a genome-wide survey of 250 fungal secretomes.

Morgane Le Marquer, Hélène San Clemente, Christophe Roux, Bruno Savelli, Nicolas Frei Dit Frey,

BACKGROUND:Many small peptides regulate eukaryotic cell biology. In fungi, some of these peptides are produced after KEX2 protease activity on proteins displaying repetitions of identical or nearly identical motifs. Following this endoprotease activity, peptides are released in the extracellular space. This type of protein maturation is involved in the production ... Read more >>

BMC Genomics (BMC genomics)
[2019, 20(1):64]

Cited: 3 times

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Arbuscular mycorrhizal fungi: intraspecific diversity and pangenomes.

Stephanie Mathieu, Loïc Cusant, Christophe Roux, Nicolas Corradi,

Contents Summary 1129 I. Introduction 1129 II. Intraspecific phenotypic variation and the plant host 1130 III. High inter-isolate genetic diversity in model AMF 1130 IV. Genome diversity within the model AM fungus Rhizophagus irregularis 1131 V. Pangenomes and the future of AMF ecological genomics 1131 Acknowledgements 1133 References 1133 SUMMARY: ... Read more >>

New Phytol. (The New phytologist)
[2018, 220(4):1129-1134]

Cited: 1 time

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High intraspecific genome diversity in the model arbuscular mycorrhizal symbiont Rhizophagus irregularis.

Eric C H Chen, Emmanuelle Morin, Denis Beaudet, Jessica Noel, Gokalp Yildirir, Steve Ndikumana, Philippe Charron, Camille St-Onge, John Giorgi, Manuela Krüger, Timea Marton, Jeanne Ropars, Igor V Grigoriev, Matthieu Hainaut, Bernard Henrissat, Christophe Roux, Francis Martin, Nicolas Corradi,

Arbuscular mycorrhizal fungi (AMF) are known to improve plant fitness through the establishment of mycorrhizal symbioses. Genetic and phenotypic variations among closely related AMF isolates can significantly affect plant growth, but the genomic changes underlying this variability are unclear. To address this issue, we improved the genome assembly and gene ... Read more >>

New Phytol. (The New phytologist)
[2018, 220(4):1161-1171]

Cited: 27 times

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A protocol to isolate and qualify purified human preantral follicles in cases of acute leukemia, for future clinical applications.

Elodie Mouloungui, Tristan Zver, Christophe Roux, Clotilde Amiot,

Autotransplantation of cryopreserved ovarian cortex can be associated with a risk of cancer cell reseeding. This issue could be eliminated by grafting isolated preantral follicles. Collagenase NB6 is an enzyme produced under good manufacturing practices (GMP) in compliance with requirements for tissue engineering and transplantation in humans and thus can ... Read more >>

J Ovarian Res (Journal of ovarian research)
[2018, 11(1):4]

Cited: 1 time

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Opportunities and risks of biofertilization for leek production in urban areas: Influence on both fungal diversity and human bioaccessibility of inorganic pollutants.

Antoine Pierart, Camille Dumat, Arthur QuyManh Maes, Christophe Roux, Nathalie Sejalon-Delmas,

The influence of biofertilization with arbuscular mycorrhizal fungi (AMF) on trace metal and metalloids (TM) - Pb, Cd and Sb - uptake by leek (Allium porrum L.) grown in contaminated soils was investigated. The effect of biofertilization on human bioaccessibility of the TM in the plants was also examined. Leek ... Read more >>

Sci. Total Environ. (The Science of the total environment)
[2018, 624:1140-1151]

Cited: 2 times

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Corrigendum: The Comparison of Expressed Candidate Secreted Proteins from Two Arbuscular Mycorrhizal Fungi Unravels Common and Specific Molecular Tools to Invade Different Host Plants.

Laurent Kamel, Nianwu Tang, Mathilde Malbreil, Hélène San Clemente, Morgane Le Marquer, Christophe Roux, Nicolas Frei Dit Frey,

[This corrects the article on p. 124 in vol. 8, PMID: 28223991.]. ... Read more >>

Front Plant Sci (Frontiers in plant science)
[2017, 8:2065]

Cited: 0 times

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Validation of an automated technique for ovarian cortex dissociation: isolation of viable ovarian cells and their qualification by multicolor flow cytometry.

Tristan Zver, Elodie Mouloungui, Aurélie Berdin, Christophe Roux, Clotilde Amiot,

Ovarian tissue cryopreservation is a technique for fertility preservation addressed to prepubertal girls or to patients for whom no ovarian stimulation is possible before initiation of gonadotoxic treatments. Autotransplantation of frozen-thawed ovarian tissue is the only available option for reuse but presents some limitations: ischemic tissue damages post-transplant and reintroduction ... Read more >>

J Ovarian Res (Journal of ovarian research)
[2017, 10(1):38]

Cited: 1 time

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An N-acetylglucosamine transporter required for arbuscular mycorrhizal symbioses in rice and maize.

Marina Nadal, Ruairidh Sawers, Shamoon Naseem, Barbara Bassin, Corinna Kulicke, Abigail Sharman, Gynheung An, Kyungsook An, Kevin R Ahern, Amanda Romag, Thomas P Brutnell, Caroline Gutjahr, Niko Geldner, Christophe Roux, Enrico Martinoia, James B Konopka, Uta Paszkowski,

Most terrestrial plants, including crops, engage in beneficial interactions with arbuscular mycorrhizal fungi. Vital to the association is mutual recognition involving the release of diffusible signals into the rhizosphere. Previously, we identified the maize no perception 1 (nope1) mutant to be defective in early signalling. Here, we report cloning of ... Read more >>

Nat Plants (Nature plants)
[2017, 3:17073]

Cited: 18 times

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Role of the GRAS transcription factor ATA/RAM1 in the transcriptional reprogramming of arbuscular mycorrhiza in Petunia hybrida.

Mélanie K Rich, Pierre-Emmanuel Courty, Christophe Roux, Didier Reinhardt,

Development of arbuscular mycorrhiza (AM) requires a fundamental reprogramming of root cells for symbiosis. This involves the induction of hundreds of genes in the host. A recently identified GRAS-type transcription factor in Petunia hybrida, ATA/RAM1, is required for the induction of host genes during AM, and for morphogenesis of the ... Read more >>

BMC Genomics (BMC genomics)
[2017, 18(1):589]

Cited: 13 times

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The Comparison of Expressed Candidate Secreted Proteins from Two Arbuscular Mycorrhizal Fungi Unravels Common and Specific Molecular Tools to Invade Different Host Plants.

Laurent Kamel, Nianwu Tang, Mathilde Malbreil, Hélène San Clemente, Morgane Le Marquer, Christophe Roux, Nicolas Frei Dit Frey,

Arbuscular mycorrhizal fungi (AMF), belonging to the fungal phylum Glomeromycota, form mutualistic symbioses with roots of almost 80% of land plants. The release of genomic data from the ubiquitous AMF Rhizophagus irregularis revealed that this species possesses a large set of putative secreted proteins (RiSPs) that could be of major ... Read more >>

Front Plant Sci (Frontiers in Plant Science)
[2017, 8:124]

Cited: 17 times

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The Identification of Phytohormone Receptor Homologs in Early Diverging Fungi Suggests a Role for Plant Sensing in Land Colonization by Fungi.

Anaïs Hérivaux, Thomas Dugé de Bernonville, Christophe Roux, Marc Clastre, Vincent Courdavault, Amandine Gastebois, Jean-Philippe Bouchara, Timothy Y James, Jean-Paul Latgé, Francis Martin, Nicolas Papon,

Histidine kinases (HKs) are among the most prominent sensing proteins studied in the kingdom Fungi. Their distribution and biological functions in early diverging fungi (EDF), however, remain elusive. We have taken advantage of recent genomic resources to elucidate whether relationships between the occurrence of specific HKs in some EDF and ... Read more >>

mBio (mBio)
[2017, 8(1):]

Cited: 10 times

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Biology and evolution of arbuscular mycorrhizal symbiosis in the light of genomics.

Laurent Kamel, Michelle Keller-Pearson, Christophe Roux, Jean-Michel Ané,

531 I. 531 II. 532 III. 532 IV. 534 V. 534 535 References 535 SUMMARY: Arbuscular mycorrhizal (AM) fungi associate with the vast majority of land plants, providing mutual nutritional benefits and protecting hosts against biotic and abiotic stresses. Significant progress was made recently in our understanding of the genomic ... Read more >>

New Phytol. (The New phytologist)
[2017, 213(2):531-536]

Cited: 19 times

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Sequence variation in nuclear ribosomal small subunit, internal transcribed spacer and large subunit regions of Rhizophagus irregularis and Gigaspora margarita is high and isolate-dependent.

Odile Thiéry, Martti Vasar, Teele Jairus, John Davison, Christophe Roux, Paula-Ann Kivistik, Andres Metspalu, Lili Milani, Ülle Saks, Mari Moora, Martin Zobel, Maarja Öpik,

Arbuscular mycorrhizal (AM) fungi are known to exhibit high intra-organism genetic variation. However, information about intra- vs. interspecific variation among the genes commonly used in diversity surveys is limited. Here, the nuclear small subunit (SSU) rRNA gene, internal transcribed spacer (ITS) region and large subunit (LSU) rRNA gene portions were ... Read more >>

Mol. Ecol. (Molecular ecology)
[2016, 25(12):2816-2832]

Cited: 19 times

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A Survey of the Gene Repertoire of Gigaspora rosea Unravels Conserved Features among Glomeromycota for Obligate Biotrophy.

Nianwu Tang, Hélène San Clemente, Sébastien Roy, Guillaume Bécard, Bin Zhao, Christophe Roux,

Arbuscular mycorrhizal (AM) fungi are a diverse group of soil fungi (Glomeromycota) that form the most ancient mutualistic association termed AM symbiosis with a majority of land plants, improving their nutrition uptake and resistance to stresses. In contrast to their great ecological implications, the knowledge of the molecular biological mechanisms ... Read more >>

Front Microbiol (Frontiers in Microbiology)
[2016, 7:233]

Cited: 33 times

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Algal ancestor of land plants was preadapted for symbiosis.

Pierre-Marc Delaux, Guru V Radhakrishnan, Dhileepkumar Jayaraman, Jitender Cheema, Mathilde Malbreil, Jeremy D Volkening, Hiroyuki Sekimoto, Tomoaki Nishiyama, Michael Melkonian, Lisa Pokorny, Carl J Rothfels, Heike Winter Sederoff, Dennis W Stevenson, Barbara Surek, Yong Zhang, Michael R Sussman, Christophe Dunand, Richard J Morris, Christophe Roux, Gane Ka-Shu Wong, Giles E D Oldroyd, Jean-Michel Ané,

Colonization of land by plants was a major transition on Earth, but the developmental and genetic innovations required for this transition remain unknown. Physiological studies and the fossil record strongly suggest that the ability of the first land plants to form symbiotic associations with beneficial fungi was one of these ... Read more >>

Proc. Natl. Acad. Sci. U.S.A. (Proceedings of the National Academy of Sciences of the United States of America)
[2015, 112(43):13390-13395]

Cited: 75 times

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A new method for evaluating the risk of transferring leukemic cells with transplanted cryopreserved ovarian tissue.

Tristan Zver, Magalie Alvergnas-Vieille, Francine Garnache-Ottou, Christophe Roux, Clotilde Amiot,

This study aimed to develop a method to detect ovarian residual disease by multicolor flow cytometry in acute leukemia patients.We designed an experimental model consisting in adding acute leukemia cells to a cell suspension obtained from healthy ovarian cortex. Leukemic cell detection within the ovarian cell suspension required the development ... Read more >>

J. Assist. Reprod. Genet. (Journal of assisted reproduction and genetics)
[2015, 32(8):1263-1266]

Cited: 4 times

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Impact of laryngeal tube use on chest compression fraction during out-of-hospital cardiac arrest. A prospective alternate month study.

Maxime Maignan, François-Xavier Koch, Marie Kraemer, Bruno Lehodey, Damien Viglino, Marie-France Monnet, Dominique Pham, Christophe Roux, Céline Genty, Carole Rolland, Jean-Luc Bosson, Vincent Danel, Guillaume Debaty,

Supraglottic devices are thought to allow efficient ventilation and continuous chest compressions during cardiac arrest. Therefore, the use of supraglottic devices could increase the chest compression fraction (CCF), a critical determinant of patient survival. The aim of this study was to assess the CCF in out-of-hospital cardiac arrest (OHCA) patients ... Read more >>

Resuscitation (Resuscitation)
[2015, 93:113-117]

Cited: 6 times

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Assessment of Ustilago maydis as a fungal model for root infection studies.

Mahta Mazaheri-Naeini, Seyed Kazem Sabbagh, Yves Martinez, Nathalie Séjalon-Delmas, Christophe Roux,

Ustilago maydis is a fungus infecting aerial parts of maize to form smutted galls. Due to its interest as a genetic tool in plant pathology, we evaluated its ability to penetrate into plant roots. The fungus can penetrate between epidermic root cells, forming inter and intracellular pseudohyphae. Root infection didn't ... Read more >>

Fungal Biol (Fungal biology)
[2015, 119(2-3):145-153]

Cited: 2 times

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