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- Dominique TrÃ©mousaygue, Lionel Garnier, Claude Bardet, Patrick Dabos, Christine HervÃ©, B. Lescure
- The Plant journal : for cell and molecularâ€¦
- 2003

We have focused our interest on two cis-regulatory elements, named site II motif and telo box, identified within the promoter of plant proliferating cellular nuclear antigen (PCNA) and putatively involved in meristematic expression of the gene. A conserved topological association between site II motifs and telo boxes is observed in the promoter of numerousâ€¦ (More)

- Lionel Garnier, FranÃ§oise Simon-Plas, +4 authors Jean-Luc Montillet
- Plant, cell & environment
- 2006

Cadmium is suspected to exert its toxic action on cells through oxidative damage. However, the transition metal is unable to directly generate reactive oxygen species (ROS) via redox reactions with molecular oxygen in a biological environment. Here, we show that bright yellow-2 (BY-2) tobacco cells exposed to millimolar concentrations of CdCl(2) developedâ€¦ (More)

- Jean-Luc Montillet, Jean-Luc Cacas, +8 authors Christian TriantaphylidÃ¨s
- The Plant journal : for cell and molecularâ€¦
- 2004

Various physiological imbalances lead to reactive oxygen species (ROS) overproduction and/or increases in lipoxygenase (LOX) activities, both events ending in lipid peroxidation of polyunsaturated fatty acids (PUFAs). Besides the quantification of such a process, the development of tools is necessary in order to allow the identification of the primary causeâ€¦ (More)

- Mickael Moulager, Annabelle Monnier, +6 authors FranÃ§ois-Yves Bouget
- Plant physiology
- 2007

Cell division often occurs at specific times of the day in animal and photosynthetic organisms. Studies in unicellular photosynthetic algae, such as Chlamydomonas or Euglena, have shown that the photoperiodic control of cell division is mediated through the circadian clock. However, the underlying mechanisms remain unknown. We have studied the molecularâ€¦ (More)

- Sebti Foufou, Lionel Garnier
- Comput. Graph. Forum
- 2004

We introduce a novel method to define Dupin cyclide blends between quadric primitives. Dupin cyclides are nonspherical algebraic surfaces discovered by French mathematician Pierre-Charles Dupin at the beginning of the 19th century. As a Dupin cyclide can be fully characterized by its principal circles, we have focussed our study on how to determineâ€¦ (More)

- Lionel Garnier, Sebti Foufou, Marc Neveu
- Technique et Science Informatiques
- 2006

Dupin cyclides were introduced in 1822 by the French mathematician Pierre-Charles Dupin. They are algebraic surfaces of degree 3 or 4. The set of geometric properties of these surfaces has encouraged an increasing interest in using them for geometric modeling. A couple of algorithmes is already developed to convert a Dupin cyclide patch into a rationalâ€¦ (More)

This paper focuses on the blending of a plane with surfaces of revolution relying on Dupin cyclides, which are algebraic surfaces of degree 4 discovered by the French mathematician Pierre-Charles Dupin early in the 19th century. A general algorithm is presented for the construction of two kinds of blends: pillar and recipient. This algorithm uses Rationalâ€¦ (More)

- Lucie Druoton, Lionel Garnier, Remi Langevin, Herve Marcellier, Remy Besnard
- DICTAP
- 2011

- Bastien Durix, GÃ©raldine Morin, Sylvie Chambon, CÃ©line Roudet, Lionel Garnier
- 2015 International Conference on 3D Vision
- 2015

We present a novel approach to reconstruct a 3D object from images corresponding to two different viewpoints: we estimate the skeleton of the object instead of its surface. The originality of the method is to be able to reconstruct a complete tubular 3D object from only two input images. Unlike classical reconstruction methods like multiview stereo, thisâ€¦ (More)

- Dominique Faudot, Lionel Garnier
- Int. J. Comput. Geometry Appl.
- 2009

Blobs, developed by J.F. Blinn in 1982, are the implicit surfaces obtained by composition of a real numerical function and a distance function. Since, many authors (C. Murakami, H. Nishimura, G. Wyvill. . . ) defined their own function of density, from these implicit surfaces are interesting from several points of view. In particular, their fusion makes itâ€¦ (More)