Course Content
Introductory Plant pathology
0/4
Introduction
Different definitions of Disease
History of Plant Pathology
INDIAN SCIENTISTS
TERMS AND CONCEPTS USED IN PLANT PATHOLOGY
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TERMS AND CONCEPTS USED IN PLANT PATHOLOGY
SURVIVAL OF PLANT PATHOGENS
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SURVIVAL OF PLANT PATHOGENS
Infected host as reservoir of inoculum
Saprophytic survival outside the host
Differentiate Soil inhabitants and soil invaders
Survival as dormant spores or specialized resting structures
DISPERSAL OF PLANT PATHOGENS
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Introduction
Autonomous or direct or active dispersal
Passive or Indirect dispersal
PHENOMENON OF INFECTION/ INFECTION PROCESS
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Introduction
Process of infection
Exit of the pathogen
ROLE OF ENZYMES IN PATHOGENESIS
0/1
Composition of the cell wall
ROLE OF TOXINS IN PLANT PATHOGENESIS
0/4
Introduction
Classification of toxins (Wheeler and Luke, 1963)
Classification based on specificity of toxins
Effect of toxins on host tissues
ROLE OF GROWTH REGULATORS IN PLANT PATHOGENESIS
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Growth regulators
Growth promoting substances
Growth inhibiting substances
ROLE OF POLYSACCHARIDES IN PATHOGENESIS
DEFENSE MECHANISM IN PLANTS
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Structural defense mechanisms
Biochemical defense mechanisms
PLANT DISEASE EPIDEMIOLOGY
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Epiphytology or Epidemiology
Essential components/conditions for an Epiphytotic
REMOTE SENSING
0/2
Introduction
Advantages of Remote sensing
PRINCIPLES OF PLANT DISEASE MANAGEMENT
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Management
General principles of plant disease management
Avoidance of the pathogen
Exclusion of the pathogen
Eradication
PHYSICAL METHODS
Biological methods
Some terminologies
CLASSIFICATION OF FUNGICIDES BASED ON CHEMICAL NATURE
CLASSIFICATION OF FUNGICIDES BASED ON METHOD OF APPLICATION
HOST PLANT RESISTANCE (IMMUNIZATION)
Cross protection
INTEGRATED PLANT DISEASE MANAGEMENT (IPDM)
Rice diseases and IPDM
Biotechnology
PLANT TISSUE CULTURE
Gene cloning/ Recombinant DNA technology / Genetic engineering:
DEVELOPMENT OF DISEASE RESISTANT TRANSGENIC PLANTS THROUGH TI PLASMID MEDIATED GENE TRANSFER
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Growth regulators :

Growth regulators are of two types :

  1. Growth promoting substances and
  2. Growth inhibiting substances

 

  • The imbalance in growth promoting and growth inhibiting substances causes hypertrophy (excessive increase in cell size) and atrophy (decrease in cell size).
  • Symptoms may appear as tumors, galls, knots, witches broom, stunting, excessive root branching, defoliation and suppression of bud growth.
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