Knowra Plant pathogen Plant pathogen A plant pathogen is an organism or infectious agent that causes disease in plants. It can disrupt plant growth, reproduction, or survival through infection or harmful biological activity.
Plant immunity : The plant systems that detect threats and activate defenses against pathogens and pests. It detects pathogen molecules and coordinates defenses that limit infection.
Plant pathogenic fungi : Fungi that infect plants and cause diseases such as rusts, blights, and mildews. Fungi are a major pathogen group, with spores and hyphae adapted for plant infection.
Plant disease diagnosis : The identification of the cause of a plant's illness using symptoms, tests, and other evidence. Accurate diagnosis distinguishes pathogen infections from nutrient, environmental, and pest damage.
Irish potato famine : A catastrophic nineteenth-century famine in Ireland caused chiefly by potato late blight and intensified by social conditions. The famine shows how a pathogen affecting a staple crop can become a human disaster.
Pathogenesis : The process by which an infectious agent causes disease in a host. It describes the sequence from pathogen entry to disease symptoms in a plant.
Plant pathogenic bacteria : Bacteria that infect plants and cause diseases including wilts, cankers, and soft rots. Bacterial pathogens often enter through wounds or natural openings and multiply in plant tissues.
Plant disease management : Practices used to prevent or reduce plant diseases in crops, gardens, and natural systems. Management strategies target pathogen survival, transmission, or infection.
Dutch elm disease : A vascular disease of elms caused by fungi spread by bark beetles and through root grafts. Its spread transformed urban and woodland landscapes by killing large numbers of elm trees.
Effector (biology) : A molecule secreted or delivered by a pathogen that alters host cell processes. Many plant pathogens use effectors to suppress immunity or redirect host functions.
Plant viruses : Viruses that replicate in plant cells and cause disease, often spreading through vectors or propagation material. Viruses depend on living plant cells and commonly move between plants through vectors.
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