Some plant diseases caused by bacteria, fungi, virus, phytoplasma and nematodes

Bacterial diseases
Bacterial leaf blight	·         Pseudomonas syringae subsp. syringae
Bacterial mosaic	·         Clavibacter michiganensis subsp. tessellarius
Bacterial sheath rot	·         Pseudomonas fuscovaginae
Basal glume rot	·         Pseudomonas syringae pv. atrofaciens
Black chaff = bacterial streak	·         Xanthomonas campestris pv. translucens
Pink seed	·         Erwinia rhapontici
Spike blight = gummosis	·         Rathayibacter tritici ·         Clavibacter tritici ·         Corynebacterium michiganense pv. tritici ·         Clavibacter iranicus

Fungal diseases

Fungal diseases
Alternaria leaf blight	·         Alternaria triticina
Anthracnose	·         Glomerella graminicola (anamorph Colletotrichum graminicola)
Ascochyta leaf spot	·         Ascochyta tritici
Aureobasidium decay	·         Microdochium bolleyi ·         Aureobasidium bolleyi
Black head molds = sooty molds	·         Alternaria spp. ·         Cladosporium spp. ·         Epicoccum spp. ·         Sporobolomyces spp. ·         Stemphylium spp. ·         and other genera
Black point = kernel smudge	associated with fungal infection, primarily:[2] ·         Alternaria spp. ·         Cochliobolus sativus ·         Cladosporium spp.
Cephalosporium stripe	·         Hymenula cerealis ·         Cephalosporium gramineum
Common bunt = stinking smut	·         Tilletia tritici ·         Tilletia caries ·         Tilletia laevis ·         Tilletia foetida
Common root rot	·         Cochliobolus sativus [teleomorph] ·         Bipolaris sorokiniana [anamorph] ·         Helminthosporium sativum
Cottony snow mold	·         Coprinus psychromorbidus
Crown rot = foot rot, seedling blight, dryland root rot	·         Fusarium spp. ·         Fusarium pseudograminearum ·         Gibberella zeae ·         Fusarium graminearum Group II [anamorph] ·         Gibberella avenacea ·         Fusarium avenaceum [anamorph] ·         Fusarium culmorum
Dilophospora leaf spot = twist	·         Dilophospora alopecuri
Downy mildew = crazy top	·         Sclerophthora macrospora
Dwarf bunt	·         Tilletia controversa
Ergot	·         Claviceps purpurea ·         Sphacelia segetum [anamorph]
Eyespot = foot rot, strawbreaker	·         Tapesia yallundae ·         Ramulispora herpotrichoides [anamorph] ·         Pseudocercosporella herpotrichoides W-pathotype ·         Tapesia acuformis ·         Ramulispora acuformis [anamorph] ·         Pseudocercosporella herpotrichoides var. acuformis R-pathoytpe
False eyespot	·         Gibellina cerealis
Flag smut	·         Urocystis agropyri
Foot rot = dryland foot rot	·         Fusarium spp.
Halo spot	·         Pseudoseptoria donacis ·         Selenophoma donacis
Karnal bunt = partial bunt	·         Tilletia indica ·         Neovossia indica
Leaf rust = brown rust	·         Puccinia triticina ·         Puccinia recondita f.sp. tritici ·         Puccinia tritici-duri
Leptosphaeria leaf spot	·         Phaeosphaeria herpotrichoides ·         Leptosphaeria herpotrichoides ·         Stagonospora sp. [anamorph]
Loose smut	·         Ustilago tritici ·         Ustilago segetum var. tritici ·         Ustilago segetum var. nuda ·         Ustilago segetum var. avenae
Microscopica leaf spot	·         Phaeosphaeria microscopica ·         Leptosphaeria microscopica
Phoma spot	·         Phoma spp. ·         Phoma glomerata ·         Phoma sorghina ·         Phoma insidiosa
Pink snow mold = Fusarium patch	·         Microdochium nivale ·         Fusarium nivale ·         Monographella nivalis [teleomorph]
Platyspora leaf spot	·         Clathrospora pentamera ·         Platyspora pentamera
Powdery mildew	·         Erysiphe graminis f.sp. tritici ·         Blumeria graminis ·         Erysiphe graminis ·         Oidium monilioides [anamorph]
Pythium root rot	·         Pythium aphanidermatum ·         Pythium arrhenomanes ·         Pythium graminicola ·         Pythium myriotylum ·         Pythium volutum
Rhizoctonia root rot	·         Rhizoctonia solani ·         Thanatephorus cucumeris [teleomorph]
Ring spot = Wirrega blotch	·         Pyrenophora seminiperda ·         Drechslera campanulata ·         Drechslera wirreganensis
Scab = head blight = Fusarium head blight	·         Fusarium spp. ·         Gibberella zeae ·         Fusarium graminearum Group II [anamorph] ·         Gibberella avenacea ·         Fusarium avenaceum [anamorph] ·         Fusarium culmorum ·         Microdochium nivale ·         Fusarium nivale ·         Monographella nivalis [teleomorph]
Sclerotinia snow mold = snow scald	·         Myriosclerotinia borealis ·         Sclerotinia borealis
Sclerotium wilt (see Southern blight)	·         Sclerotium rolfsii ·         Athelia rolfsii [teleomorph]
Septoria blotch[4]	·         Septoria tritici ·         Mycosphaerella graminicola [teleomorph]
Sharp eyespot	·         Rhizoctonia cerealis ·         Ceratobasidium cereale [teleomorph]
Snow rot	·         Pythium spp. ·         Pythium aristosporum ·         Pythium iwayamae ·         Pythium okanoganense
Southern blight = Sclerotium base rot	·         Sclerotium rolfsii ·         Athelia rolfsii [teleomorph]
Speckled snow mold = gray snow mold or Typhula blight	·         Typhula idahoensis ·         Typhula incarnata ·         Typhula ishikariensis ·         Typhula ishikariensis var. canadensis
Spot blotch	·         Cochliobolus sativus [teleomorph] ·         Bipolaris sorokiniana [anamorph] ·         Helminthosporium sativum
Stagonospora blotch	·         Phaeosphaeria avenaria f.sp. triticae ·         Stagonospora avenae f.sp. triticae [anamorph] ·         Septoria avenae f.sp. triticea ·         Phaeosphaeria nodorum ·         Stagonospora nodorum [anamorph] ·         Septoria nodorum
Stem rust = black rust	·         Puccinia graminis ·         Puccinia graminis f.sp. tritici (Ug99)
Storage molds	·         Aspergillus spp. ·         Penicillium spp. ·         and others
Stripe rust = yellow rust	·         Puccinia striiformis ·         Uredo glumarum [anamorph]
Take-all	·         Gaeumannomyces graminis var. tritici ·         Gaeumannomyces graminis var. avenae
Tan spot = yellow leaf spot, red smudge	·         Pyrenophora tritici-repentis ·         Drechslera tritici-repentis [anamorph]
Tar spot	·         Phyllachora graminis ·         Linochora graminis [anamorph]
Wheat Blast	·         Magnaporthe grisea
Zoosporic root rot	·         Lagena radicicola ·         Ligniera pilorum ·         Olpidium brassicae ·         Rhizophydium graminis

Viral diseases

Viral diseases
African cereal streak	see Maize streak
Agropyron mosaic	genus Rymovirus, Agropyron mosaic virus (AgMV)
Australian wheat striate mosaic	see Chloris striate mosaic
Barley stripe mosaic	genus Hordeivirus, Barley stripe mosaic virus (BSMV)
Barley yellow dwarf	genus Luteovirus, Barley yellow dwarf virus (BYDV)
Barley yellow streak mosaic	Barley yellow streak mosaic virus
Barley yellow striate mosaic	genus Cytorhabdovirus, Barley yellow striate mosaic virus (BYSMV)
Barley yellow stripe	see Barley stripe mosaic
Brome mosaic	genus Bromovirus, Brome mosaic virus (BMV)
Cereal northern mosaic	genus Cytorhabdovirus, Cereal northern mosaic virus (NCMV)
Cereal tillering	Cereal tillering virus
Chloris striate mosaic	genus Monogeminivirus, Chloris striate mosaic virus (CSMV)
Cocksfoot mottle	genus Sobemovirus, Cocksfoot mottle virus (CoMV)
Eastern wheat striate	Eastern wheat striate virus
Enanismo	Probable virus or phytoplasma
High plains disease	Probable virus. Vectored by wheat curl mite, Aceria tosichella
Maize streak	genus Monogeminivirus, Maize streak virus (MSV)
Northern cereal mosaic	genus Cytorhabdovirus, Cereal northern mosaic virus (NCMV)
Oat sterile dwarf	genus Fijivirus, Oat sterile dwarf virus (OSDV)
Rice black-streaked dwarf	genus Fijivirus, Rice black-streaked dwarf virus (RBSDV)
Rice hoja blanca	genus Tenuivirus, Rice hoja blanca virus (RHBV)
Russian winter wheat mosaic	genus Cytorhabdovirus, Russian winter wheat mosaic virus (WWRMV)
Seedborne wheat yellows	Seedborne wheat yellows viroid
Tobacco mosaic	genus Tobamovirus, Tobacco mosaic virus (TMV)
Wheat American striate mosaic	genus Nucleorhabdovirus, Wheat American striate mosaic virus (WASMV)
Wheat chlorotic streak = Wheat chlorotic streak mosaic	see Barley yellow striate mosaic
Wheat dwarf	genus Monogeminivirus, Wheat dwarf virus (WDV)
Wheat European striate mosaic	genus Tenuivirus, Wheat European striate mosaic virus (EWSMV)
genus Emaravirus, Wheat mosaic virus (WMoV)
Wheat rosette stunt	see Cereal northern mosaic
Wheat soilborne mosaic	genus Furovirus, Wheat soil-borne mosaic virus (SBWMV)
Wheat soilborne yellow mosaic	Wheat soil-borne yellow mosaic virus
Wheat spindle streak mosaic	a strain of Wheat yellow mosaic virus
Wheat spot mosaic	Probable virus or phytoplasma
Wheat streak mosaic	genus Tritimovirus, Wheat streak mosaic virus (WSMV)
Wheat striate mosaic	see Wheat American striate mosaic
Wheat yellow leaf	genus Closterovirus, Wheat yellow leaf virus (WYLV)
Wheat yellow mosaic	Wheat yellow mosaic virus = Wheat spindle streak mosaic virus

Phytoplasmal diseases

Phytoplasmal diseases
Aster yellows	Aster yellows phytoplasma

Nematodes, parasitic

Nematodes, parasitic
Cereal cyst nematode	Heterodera avenae
Grass cyst nematode	Punctodera punctata
Root gall nematode	Subanguina spp.
Root-knot nematode	Meloidogyne spp. ·         Meloidogyne naasi ·         Meloidogyne chitwoodi