spécifiquement régulés pendant la symbiose et codant des petites protéines sécrétées
dénommées alors MiSSPs pour Mycorrhiza induced Small Secreted Proteins (Martin et al,
2008). Des études transcriptomiques utilisant des puces à ADN sur l‟interaction L. bicolor/P.
menziesii ont permis de mettre en évidence l‟existence de gènes spécifiquement exprimés par
L. bicolor pendant la symbiose avec P. menziesii et pas avec P. trichocarpa, ainsi qu‟un core
régulon de gènes de L. bicolor surexprimés aussi bien chez P. trichocarpa que P. menziesii,
(Plett et al, 2015). Parmi ce core régulon se trouve plusieurs protéines MiSSPs étudiées au
laboratoire, notamment MiSSP7, MiSSP8 et MiSSP17, laissant penser que leurs fonctions
sont impliquées dans des processus clés de mise en place de la symbiose plutôt que dans les
processus qui contrôlent la spécificité d‟hôte.
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Chapitre III
Analyse comparative de sécrétomes
Dans le document
Analyse d’effecteurs du champignon ectomycorhizien Laccaria bicolor : approches bio-informatiques et fonctionnelles
(Page 81-87)