Lect. 5 Host Pathogen interaction-II

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Support of guard model • No direct <strong>interaction</strong> is found between Ave factor and R proteins except shown in Avr ptopto and Avr pita-pita • Recognition of the Avr factor requires an additional host protein that is specific for each Ave-R pairs. • Structure of predicted function of this host protein, or its general occurrence, suggest that it might be a virulence target for the pathogen.
DIFFERENT INDIRECT MODELS TO SUPPORT GUARD HYPOTHESIS • Bridge : Effector binds independency to the R-protein into G the third protein, recruiting one to the other. The effector dependent <strong>interaction</strong> of these two proteins activates downstream signalling for defense.
Page 1 and 2: Host-Pathogen interaction-II Pl Pat
Page 3 and 4: GUARD HYPOTHESIS Vander Biezen and
Page 5: Elicitor Target R-gene (Vander Biez
Page 9 and 10: 2. Matchmaker : • Effector induce
Page 11 and 12: Affinity enhancement : • Interact
Page 13 and 14: De-repression : • Effector derepr
Page 15 and 16: Dual recognition • This model in
Page 17 and 18: RECENT EXAMPLES OF PLANT-PATHOGEN I
Page 19 and 20: . RPS2 is an NB-LRR protein that re
Page 21 and 22: Arabidopsis-P. syringae system B. R
Page 23 and 24: Contd… Arabidopsis-P. syringae sy
Page 25 and 26: E. The transmembrane RLP Cf-2 guard

Lect. 5 Host Pathogen interaction-II

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