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.
Leptomelanconium needle blight of pine
Pathogen name: Leptomelanconium pinicola (Berk. & Curtis) R.S. Hunt
Lirula abietis-concoloris (Mayr ex Dearn.) Darker
Disease name: Fir needle cast (Lirula abietis-concoloris)
Lophodermium seditiosum Minter, Staley, & Millar
Disease name: Needle cast (Lophodermium seditiosum)
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Lachnellula willkommii
(Hartig) Dennis
Disease name: European larch canker
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Laetiporus sulphureus
(Bull.:Fr.) Murrill
Disease name: Sulphureus brown cubical rot
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Laminated root rot cedar form
Pathogen name: Phellinus weirii-2 (Murrill) R. L. Gilbertson
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Laminated root rot douglas-fir form
Pathogen name: Phellinus weirii-1 (Murrill) R. L. Gilbertson
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Larch dwarf mistletoe
Pathogen name: Arceuthobium laricis (Piper) St-John
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Larch needle cast
Pathogen name: Hypodermella laricis Tub.
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Larch-willow rust
Pathogen name: Melampsora paradoxa
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Large-spored spruce – Labrador tea rust
Pathogen name: Chrysomyxa ledicola (Peck) Lagerh.
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Leaf blight (Ventura populina)
Pathogen name: Venturia populina (Vuill.) Fabric.
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Leaf blight (Linospora tetraspora)
Pathogen name: Linospora tetraspora G. E. Thompson
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Leaf spot (Didymosporium arbuticola)
Pathogen name: Didymosporium arbuticola Zeller
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Leptomelanconium needle blight of pine
Pathogen name: Leptomelanconium pinicola (Berk. & Curtis) R.S. Hunt
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Leucostoma kunzei
Sacc.
Disease name: Canker disease of spruce
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Lirula abietis-concoloris
(Mayr ex Dearn.) Darker
Disease name: Fir needle cast (Lirula abietis-concoloris)
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Lirula macrospora
(R. Hartig) Darker
Disease name: Needle cast (Lirula macrospora)
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Lirula punctata
(Darker) Darker
Disease name: Fir needle cast (Lirula punctata)
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Lodgepole pine dwarf mistletoe
Pathogen name: Arceuthobium americanum Nutt. Ex Engelm.
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Lophodermella concolor
(Dearn.) Darker
Disease name: Pine needle cast
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Lophodermella montivaga
Petr.
Disease name: Pine needle cast
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Lophodermium decorum
Darker
Disease name: Fir needle cast (Lophodermium decorum)
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Lophodermium lacerum
Darker
Disease name: Fir needle cast (Lophodermium lacerum)
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Lophodermium piceae
(Fckl.)
Disease name: Spruce needle cast (Lophodermium piceae)
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Lophodermium pinastri
(Shrad.:Fr.) Chev.
Disease name: Needle cast (Lophodermium pinastri )
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Lophodermium seditiosum
Minter, Staley, & Millar
Disease name: Needle cast (Lophodermium seditiosum)
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Lophodermium uncinatum
Darker
Disease name: Spruce needle cast (Lophodermium uncinatum)
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Lycoperdon perlatum
Pers.
Disease name: Warted puffball