Plant interactions
Types of plant interactions with other organisms
• Symbiotic- pollination, seed dispersal, nitrogen fixation, mycorrhizal fungi
• Pathogenic- pathogens, pests
Pathogenic plant interactions
Disease symptoms
• Leaf blight
• Leaf spots
• Chewing damage
• Piercing/ sucking damage
• Scab on fruit
• Cancer on tree
• Wilt
Plant disease- causing agents
• Oomycetes- fungal-like non photosynthetic
Brown Algae
• Viroids- smaller than virus, only RNA
• Phytoplasmas- small 'bacteria' no cell wall
• Parasitic plants
• Insects
Pathogen life styles
• Biotroph- lives on living organism, highly specialized die to co-evolution
,
Types of plant interactions with other organisms
• Symbiotic- pollination, seed dispersal, nitrogen fixation, mycorrhizal fungi
• Pathogenic- pathogens, pests
Pathogenic plant interactions
Disease symptoms
• Leaf blight
• Leaf spots
• Chewing damage
• Piercing/ sucking damage
• Scab on fruit
• Cancer on tree
• Wilt
Plant disease- causing agents
• Oomycetes- fungal-like non photosynthetic
Brown Algae
• Viroids- smaller than virus, only RNA
• Phytoplasmas- small 'bacteria' no cell wall
• Parasitic plants
• Insects
Pathogen life styles
• Biotroph- lives on living organism, highly specialized die to co-evolution
,
