Plants too have immunity!! presentation includes,Non host resistance,Host resistance,Passive/constitutive Resistance Mechanism in plants,Active/induced Resistance Mechanism in plants,Structural barrier,Root border cells,Antimicrobial compounds: Phytoanticipins,Pathogen infection,Recognition,Types of NBS-LLR domains,effector triggered immunity(ETI),pattern triggered immunity(PTI),When do ETI triggered?,Signaling in plants,MAPK signaling pathway,Ion fluxes and calcium homeostasis,The oxidative burst,NITRIC OXIDE PRODUCTION,salicylic acid,Jasmonic acid-ethylene,HR,SAR,ISR and Communal resistance,Hypersensitive response HR , Systemic acquired resistance(SAR),Induced systemic resistance (ISR) ,Communal resistance, Induction of defense related gene,Cell wall strengthening ,Anti-microbial compound: Phytoalexins ,Synthesis of Pathogenesis related protein,Post transcriptional gene silencing (PTG’s).

1. PLANT IMMUNITY
PLANT-PATHOGEN INTERACTION

2. Plant immunity!!
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3. Resistance levels in plants
Non host resistance
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Host resistance
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4. Resistance Mechanism in plants
Passive/constitutive
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Active/induced
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5. What if plant fails to resists the pathogen
by induced action too ?

6. Passive/constitutive/preformed
resistance mechanism in plants

7. 1.Structural barrier
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9. 2. Root border cells
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11. 3. Antimicrobial compounds: Phytoanticipins
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12. Active/ Induced resistance
mechanism in plants

13. Steps in “induced resistance mechanism”

14. 1.Pathogen infection

15. 2.Recognition

16. Types of NBS-LLR domains
TIR
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NON TIR
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17. Recognition Via
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19. When do ETI triggered?
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21. 3. Signaling in plants

22. Signaling
Oxidative burst nitric oxide production
HR SAR HR

23. MAPK signaling pathway
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24. Ion fluxes and calcium homeostasis
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25. Ion fluxes and calcium homeostasis

26. The oxidative burst
via NADPH/NADH oxidases
A B
C

27. e −
A

28. A+B

29. C

30. NITRIC OXIDE PRODUCTION
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31. When do this salicylic acid and
Jasmonic acid-ethylene pathway triggered?
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32. What is HR,SAR,ISR and Communal
resistance??
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33. Hypersensitive response
HR

34. Systemic acquired resistance(SAR)
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35. Induced systemic resistance (ISR)
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36. Communal resistance
• Signal sent to neighboring plant to alert them about
infection or infestation by pathogen or insects

38. 4. Induction of defense related gene

39. Induced structural gene

40. b. Cell wall strengthening
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41. Anti-microbial compound: Phytoalexins
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42. Phytoalexins
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43. Synthesis of Pathogenesis related protein
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44. Post transcriptional gene silencing (PTG’s)
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45. Reference:
 Molecular plant pathology by M.dickinson
• https://www.frontiersin.org/articles/10.3389/fpls.2015.0035
2/full#:~:text=Plant%2Dpathogen%20interaction%20is%2
0a,et%20al.%2C%202013).
• https://youtu.be/RPCggM0kJ5E
• https://youtu.be/AAeIEajdlBQ
• https://youtu.be/W43gpRZb5as
• https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5378191/

46. Thank you!!