Guerra-Guimares L. auteur aut IRD Silva M. C. auteur aut IRD Struck C. auteur aut IRD Loureiro A. auteur aut IRD Nicole Michel auteur aut IRD Rodrigues C. J. auteur aut IRD Ricardo C. P. P. auteur aut IRD text journalArticle eng text/pdf born digital access Two Coffea arabica - Hemileia vastatrix incompatible interactions (I-1: coffee cv. Caturra - rust race VI and I-2: coffee cv S4 Agaro - rust race II) and a compatible interaction (coffee cv. Caturra - rust race II) were compared in relation to the infection process and chitinase activity. In the two incompatible interactions the fungus ceased growth in the early infection stages, while in the compatible interaction no fungus growth inhibition was observed. A high constitutive level of chitinase activity was detected in the intercellular fluid of healthy leaves. Upon infection, chitinase isoforms were more abundant in incompatible interactions than in the compatible interaction. Immunodetection showed that class I chitinases are particularly relevant in the incompatible interactions and might participate in the defence response of the coffee plants. specialized immunodetection coffee-orange rust interactions intercellular fluid resistance response 076 53 4 702-706 2009 0006-3134 https://www.documentation.ird.fr/hor/fdi:010048428 10.1007/s10535-009-0126-8 0006-3134 [F B010048428] https://www.documentation.ird.fr/hor/fdi:010048428 https://www.documentation.ird.fr/intranet/publi/2009/12/010048428.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2009-12-21 2017-08-23 fdi:010048428 fre