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Diseases caused by pathogens

A pathogen is a living organism or virus directly capable of causing disease. The term “disease” is defined as a harmful deviation from the normal functioning of physiological processes. Many taxonomically diverse organisms become phytopathogenic (cause plant diseases) under suitable conditions. Plant pathogens can be categorized by their formal biological classification (taxonomy).

Index of disease names and scientific names of their causal pathogens

The entries for diseases caused by pathogens have sections containing nomenclature and taxonomy; general information and importance; distribution and hosts; symptoms and signs; disease cycle; damage; prevention and management; selected references; and photographs depicting various stages of the pathogen and the damage caused.

Adustio salinaria Humain

Disease name: Road salt injury

Adustio solaris angiospermae Nature

Disease name: Sunscald of hardwoods

Annosus root and butt rot (Heterobasidion irregulare)

Pathogen name: Heterobasidion irregulare (Underw.) Garbel. & Otrosina

Annosus root and butt rot (Heterobasidion occidentale)

Pathogen name: Heterobasidion occidentale Otrosina & Garbel

Anthracnose of maple

Pathogen name: Aureobasidium apocryptum (Ellis & Everh.) Hermanides-Nijhof.

Arceuthobium americanum Nutt. Ex Engelm.

Disease name: Lodgepole pine dwarf mistletoe

  • Revision 2024

Arceuthobium douglasii Engelm.

Disease name: Douglas fir dwarf mistletoe

Arceuthobium laricis (Piper) St-John

Disease name: Larch dwarf mistletoe

Arceuthobium pusillum Peck

Disease name: Eastern dwarf mistletoe

Arceuthobium tsugense (Rosendahl) G.N. Jones

Disease name: Hemlock dwarf mistletoe

Armillaria cepistipes Velanovsky

Disease name: Armillaria cepistipes

Armillaria gallica Marxmüller and Romagnesi

Disease name: Armillaria gallica

Armillaria nabsnona Volk and Burdsall

Disease name: Armillaria nabsnona

Armillaria ostoyae root disease

Pathogen name: Armillaria ostoyae (Romagnesi) Herink

Armillaria root rot

Pathogen name: Armillaria mellea complexe

Armillaria sinapina (Bérubé and Dessureault)

Disease name: Armillaria sinapina

Asbestos dust asphyxiation

Pathogen name: Suffocacio amiantis Humain

Aspen trunk rot

Pathogen name: Phellinus tremulae (Bondarzev) Bondarzev & Borisov in Bondarzev

Atropellis canker

Pathogen name: Atropellis piniphila (Weir) Lohman & Cash