Guy Costa
University of Limoges
17 Papers
44 Citations
Guy Costa is an academic researcher from University of Limoges. The author has contributed to research in topics: Chemistry & Fucosyltransferase. The author has an hindex of 9, co-authored 15 publications.
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Papers
Expressed Sequence Tags from Poplar Wood Tissues - A Comparative Analysis from Multiple Libraries
TL;DR: The informative comparison of multiple libraries prepared from wood tissues led to the identification of genes--some with still unknown functions--putatively involved in xylogenesis and tension wood formation.
107
The presence of Lewis a epitopes in Arabidopsis thaliana glycoconjugates depends on an active α4-fucosyltransferase gene
R. Léonard,Guy Costa,E. Darrambide,Sabine Lhernould,P. Fleurat-Lessard,M. Carlué,V. Gomord,L. Faye,Abderrahman Maftah +8 more
TL;DR: Evidence for the presence of an alpha4-fucosyltransferase in A. thaliana is provided by measurement of this glycosyl transferase activity from a purified microsomal preparation and by immunolocalization of Le(a) epitopes on glycans N-linked to glycoproteins located to the Golgi apparatus and on the cell surface.
67
Qualitative characterization of the protein fraction of exopolymeric substances (EPS) extracted with EDTA from sludge
TL;DR: SEC and PAGE are both appropriate techniques for the qualitative characterization of protein fractions from EPS extracted by EDTA and moreover differentiate EPS according to sludge origin and type.
49
Cloning and expression analysis of a wood-associated xylosidase gene (PtaBXL1) in poplar tension wood
Raphaël Decou,Sabine Lhernould,Françoise Laurans,Elodie Sulpice,Jean-Charles Leplé,Annabelle Déjardin,Gilles Pilate,Guy Costa +7 more
TL;DR: In this article, the structure and distribution of xylans, cloned the genes encoding the xylan remodeling enzymes beta-xylosidases (PtaBXLi), and examined their expression patterns during tension wood, normal wood and opposite wood xylogenesis in poplar.
29
Cytological, Biochemical and Molecular Events of the Embryogenic State in Douglas-fir (Pseudotsuga menziesii [Mirb.]).
Florian Gautier,Florian Gautier,Philippe Label,Kateřina Eliášová,Jean-Charles Leplé,Václav Motyka,Nathalie Boizot,Zuzana Vondráková,Jiří Malbeck,Alena Trávníčková,Claire Le Metté,Marie-Claude Lesage-Descauses,Anne-Marie Lomenech,Jean-François Trontin,Guy Costa,Marie-Anne Lelu-Walter,Caroline Teyssier +16 more
TL;DR: The study shows the utility of a novel approach involving integrated multi-scale transcriptomic, proteomic, biochemical, histological and anatomical analyses to obtain insights into molecular events associated with embryogenesis and more specifically to the embryogenic state of cell in Douglas-fir.