a ？repertoire for repertoire？ hypothesis repertoires of type three effectors are candidate determinants of host specificity in xanthomonas曲目曲目假设体验三个效果器类型的候选人在植物宿主特异性的决定因素.pdf

A «Repertoire for Repertoire» Hypothesis: Repertoires of Type Three Effectors are Candidate Determinants of Host Specificity in Xanthomonas 1 1 2 ´ ´ 2 3 Ahmed Hajri , Chrystelle Brin , Gilles Hunault , Frederic Lardeux , Christophe Lemaire , Charles 1 3. ´ 4. Manceau , Tristan Boureau *, Stephane Poussier * ´ ´ ´ ´ ´ 1 Departement Sante des Plantes et Environnement, Institut National de la Recherche Agronomique (INRA), Beaucouze, France, 2 Departement d’Informatique, Universite ´ ´ ´ ´ d’Angers, Angers, France, 3 Departement de Biologie, Universite d’Angers, Angers, Beaucouze, France, 4 Departement de Sciences Biologiques, Agrocampus Ouest centre ´ d’Angers, Institut National d’Horticulture et de Paysage (INHP), Beaucouze, France Abstract Background: The genetic basis of host specificity for animal and plant pathogenic bacteria remains poorly understood. For plant pathogenic bacteria, host range is restricted to one or a few host plant species reflecting a tight adaptation to specific hosts. Methodology/Principal Findings: Two hypotheses can be formulated to explain host specificity: either it can be explained by the phylogenetic position of the strains, or by the association of virulence genes enabling a pathological convergence of phylogenically distant strains. In this latter hypothesis, host specificity would result from the interactio