Lect. 5 Host Pathogen interaction-II

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D. Pto is a tomato serinethreonine protein kinase. Pto is polymorphic and hence satisfies the genetic criteria for the definition of a disease resistance protein. Pto activity requires the NB-LRR protein Prf, and the proteins form a molecular complex. Prf is monomorphic, at least in the tomato species analysed to date. Pto is the direct target of two unrelated P. syringae effectors, AvrPto and AvrPtoB, each of which contributes to pathogen virulence in pto mutants. It is thus likely that Prf guards Pto. The Pto kinase is apparently not required for PTI, though there may be redundancy in its function because it is a member of a gene family.
Contd… Arabidopsis-P. syringae system (Source Jones and dangl, 2006)
Page 1 and 2: Host-Pathogen interaction-II Pl Pat
Page 3 and 4: GUARD HYPOTHESIS Vander Biezen and
Page 5 and 6: Elicitor Target R-gene (Vander Biez
Page 7 and 8: DIFFERENT INDIRECT MODELS TO SUPPOR
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: Arabidopsis-P. syringae system B. R
Page 25 and 26: E. The transmembrane RLP Cf-2 guard

Lect. 5 Host Pathogen interaction-II

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