%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture non répertoriées par l'AERES
%A Lorquin, Jean
%A Lortet, Gilles
%A Ferro, M.
%A Méar, Nathalie
%A Dreyfus, Bernard
%A Promé, J.L.
%A Boivin, Catherine
%T Nod factors from Sinorhizobium saheli and S. teranga bv. sesbaniae are both arabinosylated and fucosylated, a structural feature specific to Sesbania rostrata symbionts
%D 1997
%L fdi:010013794
%G ENG
%J Molecular Plant-Microbe Interactions
%@ 0894-0282
%K FIXATION BIOLOGIQUE DE L'AZOTE ; NODULE RACINAIRE ; NODULE CAULINAIRE ; SOUCHE ; INTERACTION ; SYMBIOSE ; PURIFICATION ; CLHP ; AMELIORATION DES PLANTES
%N 7
%P 879-890
%R 10.1094/MPMI.1997.10.7.879
%U https://www.documentation.ird.fr/hor/fdi:010013794
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_6/b_fdi_49-50/010013794.pdf
%V 10
%W Horizon (IRD)
%X #Sesbania$ spp. can establish symbiotic interactions with rhizobia from diverse taxonomical origins, including the newly described #Sinorhizobium saheli$ and #S. teranga$ bv. #sesbaniae$, in addition to the #Sesbania rostrata$-specific symbiont #Azorhizobium caulinodans$. These different rhizobia exhibit a narrow host range, which is limited mainly to #Sesbania$ spp. Nod factors from the overproducing strains of #S. saheli$ ORS611 were purified and their structures determined. Remarkably, the terminal reducing glucosamine of most compounds was found to bear both an arabinosyl group on C-3 and a fucosyl substitution on C-6. Other structural features are as follows : Nod factors are mainly chitopentameric compounds, N-methylated, O-carbamoylated and N-substituted either by a C18:1 or a C16:0 acyl chain at their nonreducing end. Nod factors from an overproducing strains of #S. teranga$ bv. #sesbaniae$ ORS604 were found to be identical to those of #S. saheli$ on the basis of high-pressure liquid chromatography separation and liquid secondary ion mass spectrometry analysis. The Nod factor double glycosylation, i.e., arabinosylation and fucosylation, which appears to be unique to #Sesbania$ symbionts, probably reflects a high selection pressure from #Sesbania$ host plants. (Résumé d'auteur)
%$ 084SYMBIO ; 076AMEPLA07