This article is a list of diseases of wheat

Wheat

Wheat is a cereal grain, originally from the Levant region of the Near East, but now cultivated worldwide. In 2007 world production of wheat was 607 million tons, making it the third most-produced cereal after maize and rice...

(Triticum spp.).

Bacterial diseases

{| class="wikitable" style="clear"
! colspan=2| Bacterial diseases

|-
|Bacterial leaf blight
||Pseudomonas syringae

Pseudomonas syringae

Pseudomonas syringae is a rod shaped, Gram-negative bacterium with polar flagella. It is a plant pathogen which can infect a wide range of plant species, and exists as over 50 different pathovars, all of which are available to legitimate researches via international culture collections such as the...

subsp. syringae
|-
|Bacterial mosaic
||Clavibacter michiganensis

Clavibacter michiganensis

Clavibacter michiganensis is an aerobic non-sporulating Gram-positive plant pathogenic actinomycete that currently constitutes the only species within the genus Clavibacter. The other former Clavibacter species have been reclassified to genera Leifsonia, Rathayibacter and Curtobacterium...

subsp. tessellarius
|-
|Bacterial sheath rot
||Pseudomonas fuscovaginae

Pseudomonas fuscovaginae

Pseudomonas fuscovaginae is a fluorescent, Gram-negative soil bacterium that is pathogenic to rice, causing brown sheath rot. The type strain is CCUG 32780....

|-
|Basal glume rot
||Pseudomonas syringae

Pseudomonas syringae

Pseudomonas syringae is a rod shaped, Gram-negative bacterium with polar flagella. It is a plant pathogen which can infect a wide range of plant species, and exists as over 50 different pathovars, all of which are available to legitimate researches via international culture collections such as the...

pv. atrofaciens
|-
|Black chaff = bacterial streak
||Xanthomonas campestris

Xanthomonas campestris

Xanthomonas campestris is a bacterial species that causes a variety of plant diseases. Available from the NCPPB,and other international Culture collections such as ICMP, ATCC, and LMG in a purified form, it is used in the commercial production of a high-molecular-weight polysaccharide - xanthan...

pv. translucens
|-
|Pink seed
||Erwinia rhapontici
|-
|Spike blight = gummosis
||Rathayibacter tritici

Rathayibacter tritici

Rathayibacter tritici is a Gram-positive soil bacterium. It is a plant pathogen and causes spike blight in wheat....

= Clavibacter tritici

Fungal diseases

{| class="wikitable" style="clear"
! colspan=2| Fungal diseases

|-
|Alternaria leaf blight
||
Alternaria triticina

Alternaria triticina

Alternaria triticina is a plant pathogen that causes leaf blight on wheat. It was first identified in India in 1962 and still causes significant yield loss to wheat crops on the Indian subcontinent. The disease causes necrotic leaf lesions and in severe cases seeds will become shriveled....

|-
|Anthracnose
||
Colletotrichum graminicola

Glomerella graminicola

Glomerella graminicola is a fungus which causes anthracnose many cereal species including maize and wheat.- Identification :Stromata* 70-300 μm in diameter...

Glomerella graminicola

Glomerella graminicola

Glomerella graminicola is a fungus which causes anthracnose many cereal species including maize and wheat.- Identification :Stromata* 70-300 μm in diameter...

[teleomorph]
|-
|Ascochyta leaf spot
||
Ascochyta tritici

Ascochyta tritici

Ascochyta tritici is a fungal plant pathogen that causes Ascochyta leaf spot on barley, wheat and maize.- External links :* *...

|-
|Aureobasidium decay
||
Microdochium bolleyi

Microdochium bolleyi

Microdochium bolleyi is a fungal plant pathogen that causes root rot in flax and wheat.- External links :* *...

Aureobasidium bolleyi
|-
|Black head molds = sooty molds
||
Alternaria

Alternaria

Alternaria is a genus of ascomycete fungi. Alternaria species are known as major plant pathogens. They are also common allergens in humans, growing indoors and causing hay fever or hypersensitivity reactions that sometimes lead to asthma...

spp.

Cladosporium

Cladosporium

Cladosporium is a genus of fungi including some of the most common indoor and outdoor molds. Species produce olive-green to brown or black colonies, and have dark-pigmented conidia that are formed in simple or branching chains....

spp.

Epicoccum spp.

Sporobolomyces spp.

Stemphylium spp.
and other genera
|-
|Black point = kernel smudge
||Thought to be associated with funal infection however no clear link found, now thought to be a result of physiological circumstances
|-
|Cephalosporium stripe
||
Hymenula cerealis

Hymenula cerealis

Cephalosporium gramineum or Hymenula cerealis is a plant pathogen that causes Cephalosporium Stripe of Wheat and other grasses. It was first reported in Japan in 1930. The disease can cause yield losses of up to 50% by causing death of tillers and reducing seed production and seed size...

Cephalosporium gramineum
|-
|Common bunt = stinking smut
||
Tilletia tritici

Tilletia tritici

Tilletia tritici is the causal agent of common bunt of wheat.The tilletia was named after French agronomist Mathieu Tillet .-Use as a biological weapon:...

Tilletia foetida
|-
|Common root rot

Common root rot (wheat)

Common root rot is a disease of wheat caused by one or more fungi. Cochliobolus sativus , Fusarium culmorum and F. graminearum are the most common pathogens responsible for common root rot.-Symptoms:...

||
Cochliobolus sativus

Cochliobolus sativus

The fungus Cochliobolus sativus is the teleomorph of Bipolaris sorokiniana which is the causal agent of a wide variety of cereal diseases. The pathogen can infect and cause disease on the root , leaf and stem, and head tissue...

[teleomorph]

Bipolaris sorokiniana

Cochliobolus sativus

The fungus Cochliobolus sativus is the teleomorph of Bipolaris sorokiniana which is the causal agent of a wide variety of cereal diseases. The pathogen can infect and cause disease on the root , leaf and stem, and head tissue...

[anamorph]
Helminthosporium sativum

Cochliobolus sativus

The fungus Cochliobolus sativus is the teleomorph of Bipolaris sorokiniana which is the causal agent of a wide variety of cereal diseases. The pathogen can infect and cause disease on the root , leaf and stem, and head tissue...

|-
|Cottony snow mold
||
Coprinus psychromorbidus
|-
|Crown rot = foot rot, seedling blight, dryland root rot
||
Fusarium

Fusarium

Fusarium is a large genus of filamentous fungi widely distributed in soil and in association with plants. Most species are harmless saprobes, and are relatively abundant members of the soil microbial community. Some species produce mycotoxins in cereal crops that can affect human and animal health...

spp.

Fusarium pseudograminearum

Fusarium pseudograminearum

Fusarium pseudograminearum is a fungus that causes crown and root rot of wheat.- External links :* *...

Gibberella zeae

Gibberella zeae

Gibberella zeae, also known by the name of its anamorph Fusarium graminearum, is a plant pathogen which causes the wheat headblight disease. Fusarium head blight is a devastating disease on wheat and barley. The pathogen is responsible for billions of dollars in economic losses worldwide each year...

Fusarium graminearum Group II [anamorph]

Gibberella avenacea

Gibberella avenacea

Gibberella avenacea is a plant pathogen.- External links :* *...

Fusarium avenaceum [anamorph]

Fusarium culmorum

Fusarium culmorum

Fusarium culmorum is a plant pathogen and the causal agent of seedling blight, foot rot, ear blight, stalk rot, common root rot and other diseases of cereals, grasses, and a wide variety of monocots and dicots. In coastal dunegrass , F. culmorum is a non-pathogenic symbiont conferring both salt...

|-
|Dilophospora leaf spot = twist
||
Dilophospora alopecuri

Dilophospora alopecuri

Dilophospora alopecuri is a plant pathogen.- External links :**...

|-
|Downy mildew = crazy top
||
Sclerophthora macrospora

Sclerophthora macrospora

Sclerophthora macrospora is a plant pathogen.- External links :**...

|-
|Dwarf bunt
||
Tilletia controversa

Tilletia controversa

Tilletia controversa is a plant pathogen. It is a fungus known to cause the smut disease TCK smut in soft white and hard red winter wheats. It stunts the growth of the plants and leaves smut balls in the grain heads...

|-
|Ergot

Ergot

Ergot or ergot fungi refers to a group of fungi of the genus Claviceps. The most prominent member of this group is Claviceps purpurea. This fungus grows on rye and related plants, and produces alkaloids that can cause ergotism in humans and other mammals who consume grains contaminated with its...

||
Claviceps purpurea

Claviceps purpurea

Claviceps purpurea is a fungus that grows on the ears of rye and related cereal and forage plants. Consumption of grains or seeds contaminated with the fruiting structure of this fungus, the ergot sclerotium, can cause ergotism in humans and other mammals.. C...

Sphacelia segetum [anamorph]
|-
|Eyespot = foot rot, strawbreaker
||
Tapesia yallundae

Tapesia yallundae

Tapesia yallundae is the causal agent for a variety of cereal and forage grass diseases. The anamorph o f T. yallundae is the W-type strain of Pseudocercosporella herpotrichoides...

Ramulispora herpotrichoides

Tapesia yallundae

Tapesia yallundae is the causal agent for a variety of cereal and forage grass diseases. The anamorph o f T. yallundae is the W-type strain of Pseudocercosporella herpotrichoides...

[anamorph]
Pseudocercosporella herpotrichoides

Tapesia yallundae

Tapesia yallundae is the causal agent for a variety of cereal and forage grass diseases. The anamorph o f T. yallundae is the W-type strain of Pseudocercosporella herpotrichoides...

 W-pathotype

Tapesia acuformis

Tapesia acuformis

Tapesia acuformis is the causal agent for a variety of cereal and forage grass diseases. The anamorph of T. acuformis was formerly known as the R-type strain of Pseudocercosporella herpotrichoides. The W-type strain of Pseudocercosporella herpotrichoides is now known as Tapesia yallundae....

Ramulispora acuformis

Tapesia acuformis

Tapesia acuformis is the causal agent for a variety of cereal and forage grass diseases. The anamorph of T. acuformis was formerly known as the R-type strain of Pseudocercosporella herpotrichoides. The W-type strain of Pseudocercosporella herpotrichoides is now known as Tapesia yallundae....

[anamorph]
Pseudocercosporella herpotrichoides var. acuformis

Tapesia acuformis

Tapesia acuformis is the causal agent for a variety of cereal and forage grass diseases. The anamorph of T. acuformis was formerly known as the R-type strain of Pseudocercosporella herpotrichoides. The W-type strain of Pseudocercosporella herpotrichoides is now known as Tapesia yallundae....

 R-pathoytpe
|-
|False eyespot
||
Gibellina cerealis

Gibellina cerealis

Gibellina cerealis is a fungal plant pathogen.- External links :* *...

|-
|Flag smut
||
Urocystis agropyri

Urocystis agropyri

Urocystis agropyri is a fungal plant pathogen.- External links :* *...

|-
|Foot rot = dryland foot rot
||
Fusarium

Fusarium

Fusarium is a large genus of filamentous fungi widely distributed in soil and in association with plants. Most species are harmless saprobes, and are relatively abundant members of the soil microbial community. Some species produce mycotoxins in cereal crops that can affect human and animal health...

spp.
|-
|Halo spot
||
Pseudoseptoria donacis

Pseudoseptoria donacis

Pseudoseptoria donacis is an ascomycete fungus that is a plant pathogen.- External links :**...

Selenophoma donacis
|-
|Karnal bunt = partial bunt

Karnal bunt

Karnal bunt is a fungal disease of wheat, durum wheat, and triticale. The smut fungus Tilletia indica invades the kernels and obtains its nutrition from the endosperm, leaving behind waste products with a disagreeable odor that makes bunted kernels too unpalatable for use in flour.-Origin and...

||
Tilletia indica
Neovossia indica
|-
|Leaf rust = brown rust

Wheat leaf rust

Wheat leaf rust, is fungal disease that effects wheat, barley and rye stems, leaves and grains. In temperate zones it is destructive on winter wheat because the pathogen overwinters. Infections can lead up to 20% yield loss - exacerbated by dying leaves which fertilize the fungus. The pathogen is...

||
Puccinia triticina
Puccinia recondita f.sp. tritici

Puccinia tritici-duri
|-
|Leptosphaeria leaf spot
||
Phaeosphaeria herpotrichoides

Phaeosphaeria herpotrichoides

Phaeosphaeria herpotrichoides is a plant pathogen.- External links :* *...

Leptosphaeria herpotrichoides

Stagonospora

Stagonospora

Stagonospora is a genus of fungi. Several of the species in this genus are plant pathogens....

sp. [anamorph]
|-
|Loose smut
||
Ustilago tritici

Ustilago tritici

Ustilago tritici is a plant pathogen.- External links :* *...

Ustilago segetum var. tritici

Ustilago segetum var. nuda

Ustilago segetum var. avenae
|-
|Microscopica leaf spot
||
Phaeosphaeria microscopica

Phaeosphaeria microscopica

Phaeosphaeria microscopica is a plant pathogen.- External links :* *...

Leptosphaeria microscopica
|-
|Phoma spot
||
Phoma

Phoma

Phoma is a genus of common coelomycetous soil fungi. It contains many plant pathogenic species. About 140 Phoma taxa have been defined and recognized which may be divided into two large groups: plurivorous fungi, generally saprobic or weakly parasitic, mainly from temperate regions in Eurasia, but...

spp.

Phoma glomerata

Phoma glomerata

Phoma glomerata is a plant pathogen.- External links :**...

Phoma sorghina
Fusarium nivale

Monographella nivalis [teleomorph]
|-
|Platyspora leaf spot
||
Clathrospora pentamera
Platyspora pentamera
|-
|Powdery mildew

Powdery mildew

Powdery mildew is a fungal disease that affects a wide range of plants. Powdery mildew diseases are caused by many different species of fungi in the order Erysiphales. It is one of the easier diseases to spot, as its symptoms are quite distinctive. Infected plants display white powdery spots on the...

||
Erysiphe graminis f.sp. tritici

Erysiphe graminis f.sp. tritici

Erysiphe graminis f.sp. tritici is a plant pathogen.-External links:* *...

Blumeria graminis

Blumeria graminis

Blumeria graminis is a fungus that causes powdery mildew on grasses, including cereals . It is the only species in the genus Blumeria. It has also been called Erysiphe graminis and Oidium monilioides or Oidium tritici.-Systematics:Previously B...

Erysiphe graminis

Oidium monilioides [anamorph]
|-
|Pythium root rot
||
Pythium aphanidermatum

Pythium aphanidermatum

Pythium aphanidermatum is a plant pathogen.- External links :**...

Pythium arrhenomanes

Pythium arrhenomanes

Pythium arrhenomanes is a plant pathogen.- External links :* *...

Pythium graminicola

Pythium graminicola

Pythium graminicola is a plant pathogen.- External links :**...

Pythium myriotylum

Pythium myriotylum

Pythium myriotylum is a plant pathogen.- External links :**...

Pythium volutum

Pythium volutum

Pythium volutum is a plant pathogen.- External links :**...

|-
|Rhizoctonia root rot
||
Rhizoctonia solani

Rhizoctonia solani

Rhizoctonia solani is a plant pathogenic fungus with a wide host range and worldwide distribution. This plant pathogen was discovered more than 100 years ago. Rhizoctonia solani frequently exists as thread-like growth on plants or in culture. Asexual spores are not produced, only the sexual stage...

Thanatephorus cucumeris [teleomorph]
|-
|Ring spot = Wirrega blotch
||
Pyrenophora seminiperda

Pyrenophora seminiperda

Pyrenophora seminiperda is a plant pathogen.- External links :* *...

Drechslera campanulata

Drechslera campanulata

Drechslera campanulata is a plant pathogen.- External links :**...

Drechslera wirreganensis

Drechslera wirreganensis

Drechslera wirreganensis is a plant pathogen.- External links :**...

|-
|Scab = head blight
||
Fusarium

Fusarium

Fusarium is a large genus of filamentous fungi widely distributed in soil and in association with plants. Most species are harmless saprobes, and are relatively abundant members of the soil microbial community. Some species produce mycotoxins in cereal crops that can affect human and animal health...

spp.

Gibberella zeae

Gibberella zeae

Gibberella zeae, also known by the name of its anamorph Fusarium graminearum, is a plant pathogen which causes the wheat headblight disease. Fusarium head blight is a devastating disease on wheat and barley. The pathogen is responsible for billions of dollars in economic losses worldwide each year...

Fusarium graminearum Group II [anamorph]

Gibberella avenacea

Gibberella avenacea

Gibberella avenacea is a plant pathogen.- External links :* *...

Fusarium avenaceum [anamorph]

Fusarium culmorum

Fusarium culmorum

Fusarium culmorum is a plant pathogen and the causal agent of seedling blight, foot rot, ear blight, stalk rot, common root rot and other diseases of cereals, grasses, and a wide variety of monocots and dicots. In coastal dunegrass , F. culmorum is a non-pathogenic symbiont conferring both salt...

Microdochium nivale
Fusarium nivale

Monographella nivalis [teleomorph]
|-
|Sclerotinia snow mold = snow scald
||
Myriosclerotinia borealis
Sclerotinia borealis

Sclerotinia borealis

Sclerotinia borealis is a plant pathogen.- External links :* *...

|-
|Sclerotium wilt (see Southern blight)
||
Sclerotium rolfsii

Athelia rolfsii

Athelia rolfsii

Athelia rolfsii is a corticioid fungus in the family Atheliaceae. It is a facultative plant pathogen and is the causal agent of "southern blight" disease in crops.-Taxonomy:...

[teleomorph]
|-
|Septoria blotch
||
Septoria tritici

Septoria tritici

Septoria tritici is the causal agent of S. tritici leaf blotch, a foliar disease of wheat, and occasionally infects other grasses including barley...

Mycosphaerella graminicola

Mycosphaerella graminicola

Mycosphaerella graminicola is a wheat plant pathogen that is difficult to control due to resistance to multiple fungicides.-External links:* *...

[teleomorph]
|-
|Sharp eyespot
||
Rhizoctonia cerealis

Ceratobasidium cereale

Ceratobasidium cereale

Ceratobasidium cereale is a plant pathogen.- External links :* *...

[teleomorph]
|-
|Snow rot
||
Pythium

Pythium

Pythium is a genus of parasitic oomycete. Most species are plant parasites, but Pythium insidiosum is an important pathogen of animals...

spp.

Pythium aristosporum

Pythium aristosporum

Pythium aristosporum is a plant pathogen.- External links :**...

Pythium iwayamae

Pythium iwayamae

Pythium iwayamae is a plant pathogen.- External links :**...

Pythium okanoganense

Pythium okanoganense

Pythium okanoganense is a plant pathogen.- External links :**...

|-
|Southern blight = Sclerotium base rot
||
Sclerotium rolfsii

Athelia rolfsii

Athelia rolfsii

Athelia rolfsii is a corticioid fungus in the family Atheliaceae. It is a facultative plant pathogen and is the causal agent of "southern blight" disease in crops.-Taxonomy:...

[teleomorph]
|-
|Speckled snow mold = gray snow mold or Typhula blight

Typhula blight

Typhula blight is a lawn disease related to the Typhula fungus, usually caused by Typhula incarnata and T. ishikariensis. Snow molds are cold tolerant fungi that require snow cover or prolonged periods of cold, wet conditions...

||
Typhula idahoensis

Typhula idahoensis

Typhula idahoensis is a plant pathogen.- External links :* *...

Typhula incarnata

Typhula incarnata

Typhula incarnata is, along with Typhula ishikariensis, the causal agent of Grey Snow Mould , a plant pathogen that can destroy turfgrass when covered for a long perioid with snow. It is a particular problem on golf courses established in unsuitable areas...

Typhula ishikariensis

Typhula ishikariensis

Typhula ishikariensis is, along with Typhula incarnata, the causal agent of Grey Snow Mould , a plant pathogen that can destroy turfgrass when covered for a long perioid with snow. It is a particular problem on golf courses established in unsuitable areas...

Typhula ishikariensis var. canadensis

Typhula ishikariensis var. canadensis

Typhula ishikariensis var. canadensis is a plant pathogen.-External links:**...

|-
|Spot blotch

Spot blotch (wheat)

Spot blotch is a leaf disease of wheat caused by Cochliobolus sativus. Cochliobolus sativus also infects other plant parts and in conjunction with other pathogens causes common root rot and black point.-Introduction:...

||
Cochliobolus sativus

Cochliobolus sativus

The fungus Cochliobolus sativus is the teleomorph of Bipolaris sorokiniana which is the causal agent of a wide variety of cereal diseases. The pathogen can infect and cause disease on the root , leaf and stem, and head tissue...

[teleomorph]

Bipolaris sorokiniana

Cochliobolus sativus

The fungus Cochliobolus sativus is the teleomorph of Bipolaris sorokiniana which is the causal agent of a wide variety of cereal diseases. The pathogen can infect and cause disease on the root , leaf and stem, and head tissue...

[anamorph]
Helminthosporium sativum

Cochliobolus sativus

The fungus Cochliobolus sativus is the teleomorph of Bipolaris sorokiniana which is the causal agent of a wide variety of cereal diseases. The pathogen can infect and cause disease on the root , leaf and stem, and head tissue...

|-
|Stagonospora blotch
||
Phaeosphaeria avenaria f.sp. triticae

Phaeosphaeria avenaria f.sp. triticae

Phaeosphaeria avenaria f.sp. triticae is a plant pathogen.-External links:* *...

Stagonospora avenae f.sp. triticae

Stagonospora avenae f.sp. triticae

Stagonospora avenae f.sp. triticae is a plant pathogen.-External links:**...

[anamorph]
Septoria avenae f.sp. triticea

Phaeosphaeria nodorum

Phaeosphaeria nodorum

Phaeosphaeria nodorum is a major fungal pathogen of wheat and a member of the Dothideomycetes, a large fungal taxon that includes many important plant pathogens affecting all major crop plant families....

Stagonospora nodorum [anamorph]
Puccinia graminis f.sp. tritici (Ug99)
|-
|Storage molds
||
Aspergillus

Aspergillus

Aspergillus is a genus consisting of several hundred mold species found in various climates worldwide. Aspergillus was first catalogued in 1729 by the Italian priest and biologist Pier Antonio Micheli...

spp.

Penicillium

Penicillium

Penicillium is a genus of ascomycetous fungi of major importance in the natural environment as well as food and drug production. Members of the genus produce penicillin, a molecule that is used as an antibiotic, which kills or stops the growth of certain kinds of bacteria inside the body...

spp.

and others
|-
|Stripe rust = yellow rust
||
Puccinia striiformis

Uredo glumarum [anamorph]
|-
|Take-all
||
Gaeumannomyces graminis var. tritici

Gaeumannomyces graminis var. avenae

Gaeumannomyces graminis var. avenae

Gaeumannomyces graminis var. avenae is a plant pathogen.-External links:* *...

|-
|Tan spot = yellow leaf spot, red smudge
||
Pyrenophora tritici-repentis

Pyrenophora tritici-repentis

Pyrenophora tritici-repentis is a plant pathogen of fungal origin, causing a disease called tan spot or helminthosporiosis, that affects mainly wheat in its more common varieties. It forms characteristic, dark, oval-shaped spots of necrotic tissue surrounded by a yellow ring...

Drechslera tritici-repentis [anamorph]
|-
|Tar spot
||
Phyllachora graminis

Linochora graminis

Linochora graminis

Linochora graminis is a fungal plant pathogen.-External links:* *...

[anamorph]
|-
|Wheat Blast
||
Magnaporthe grisea

Magnaporthe grisea

Magnaporthe grisea, also known as rice blast fungus, rice rotten neck, rice seedling blight, blast of rice, oval leaf spot of graminea, pitting disease, ryegrass blast, and Johnson spot, is a plant-pathogenic fungus that causes an important disease affecting rice. It is now known that M...

|-

|Zoosporic root rot
||
Lagena radicicola

Ligniera pilorum

Ligniera pilorum

Ligniera pilorum is a plant pathogen.-External links:* *...

Olpidium brassicae

Olpidium brassicae

Olpidium brassicae is a plant pathogen. In 1983, the Alsike, Alberta area's clover was struck by a fungus epidemic of Olpidium brassicae, previously not seen in Canada.- External links :* *...

Rhizophydium graminis

Rhizophydium graminis

Rhizophydium graminis is a plant pathogen....

|-
|}

Viral diseases

{| class="wikitable" style="clear"
! colspan=2| Viral diseases

|-
|African cereal streak
||see Maize streak
|-
|Agropyron mosaic
||genus Rymovirus, Agropyron mosaic virus

Agropyron mosaic virus

Agropyron mosaic virus is a plant pathogenic virus of the family Potyviridae.-External links:**...

 (AgMV)
|-
|Australian wheat striate mosaic
||see Chloris striate mosaic
|-
|Barley stripe mosaic
||genus Hordeivirus

Hordeivirus

The Hordeivirus refers to a genus of a plant virus with currently no assigned family or order. Virus consists of a non-enveloped, helical, rod-shaped capsid. The viral gene is segmented into 4 parts of positive sense, single stranded RNA of about 9000-17400 nucleotides in length.-External links:*...

, Barley stripe mosaic virus

Barley stripe mosaic virus

Barley stripe mosaic virus is a plant pathogenic virus that primarily infects barley in Canada.- Symptoms :Mottling with yellowish spots or stripes may occur, along with stunted growth and late maturation....

 (BSMV)
|-
|Barley yellow dwarf
||genus Luteovirus

Luteovirus

Luteovirus is one of three genera in the luteoviridae family whose primary hosts are plants. The genera also contains the polerovirus and enamovirus. The geographical distribution of luteovirus is widespread, with the virus primarily infecting plants via transmission by aphid vectors. The virus...

, Barley yellow dwarf virus (BYDV)
|-
|Barley yellow streak mosaic
||Barley yellow streak mosaic virus

Barley yellow streak mosaic virus

Barley yellow streak mosaic virus is a plant pathogenic virus.-External links:**...

|-
|Barley yellow striate mosaic
||genus Cytorhabdovirus, Barley yellow striate mosaic virus

Barley yellow striate mosaic virus

Barley yellow striate mosaic virus is a plant pathogenic virus of the family Rhabdoviridae.-External links:**...

 (BYSMV)
|-
|Barley yellow stripe
||see Barley stripe mosaic
|-
|Brome mosaic

Brome mosaic virus

Brome mosaic virus is a small , positive-stranded, icosahedral RNA plant virus belonging to the family Bromoviridae of the alphavirus-like superfamily....

||genus Bromovirus, Brome mosaic virus (BMV)

Brome mosaic virus

Brome mosaic virus is a small , positive-stranded, icosahedral RNA plant virus belonging to the family Bromoviridae of the alphavirus-like superfamily....

|-
|Cereal northern mosaic
||genus Cytorhabdovirus, Cereal northern mosaic virus

Cereal northern mosaic virus

Cereal northern mosaic virus is a plant pathogenic virus of the family Rhabdoviridae.-External links:**...

 (NCMV)
|-
|Cereal tillering
||Cereal tillering virus
|-
|Chloris striate mosaic
||genus Monogeminivirus, Chloris striate mosaic virus

Chloris striate mosaic virus

Chloris striate mosaic virus is a plant pathogenic virus of the family Geminiviridae.-External links:**...

 (CSMV)
|-
|Cocksfoot mottle
||genus Sobemovirus

Sobemovirus

The Sobemovirus is a genus of a virus with no family. Virion capsids are non-enveloped, round and isometric, with a diameter of 25-33 nm. The genome is a single piece of linear, positive-sense, single-stranded RNA, 4100-5700 nucleotides in length.....

, Cocksfoot mottle virus

Cocksfoot mottle virus

Cocksfoot mottle virus is a pathogenic plant virus belonging to the genus Sobemovirus. The virus appears in southern and central England. It is transmitted by beetles Lema melanopa and L...

 (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

Maize streak virus

Maize streak virus is an insect-transmitted maize pathogen in the genus Mastrevirus of the family Geminiviridae that is endemic in sub-Saharan Africa. The A-strain of MSV causes sporadic maize streak disease epidemics throughout the maize growing regions of Africa...

 (MSV)
|-
|Northern cereal mosaic
||genus Cytorhabdovirus, Cereal northern mosaic virus

Cereal northern mosaic virus

Cereal northern mosaic virus is a plant pathogenic virus of the family Rhabdoviridae.-External links:**...

 (NCMV)
|-
|Oat sterile dwarf
||genus Fijivirus

Fijivirus

-Taxonomy:The genus Fijivirus is a member of the Reoviridae virus family. These have double-stranded RNA genomes and are therefore group III viruses...

, Oat sterile dwarf virus

Oat sterile dwarf virus

Oat sterile dwarf virus is a plant pathogenic virus of the family Reoviridae.-External links:**...

 (OSDV)
|-
|Rice black-streaked dwarf
||genus Fijivirus

Fijivirus

-Taxonomy:The genus Fijivirus is a member of the Reoviridae virus family. These have double-stranded RNA genomes and are therefore group III viruses...

, Rice black-streaked dwarf virus

Rice black-streaked dwarf virus

Rice black-streaked dwarf virus is a plant pathogenic virus of the family Reoviridae.-External links:**...

 (RBSDV)
|-
|Rice hoja blanca
||genus Tenuivirus

Tenuivirus

Tenuivirus ls a name of genera of plant viruses. The type member is "Rice Stripe Virus." Other members of this genera include "Maize Stripe Virus," "Rice Hoja Blanca Virus'," and "Iranian Wheat Strip Virus." These plant viruses cause diseases in their host plants...

, Rice hoja blanca virus

Rice hoja blanca virus

Rice hoja blanca virus is the agent of the most important viral disease of rice in Latin America. The disease is found in Mexico, throughout Central America and the Caribbean region...

 (RHBV)
|-
|Russian winter wheat mosaic
||genus Cytorhabdovirus, Russian winter wheat mosaic virus (WWRMV)
|-
|Seedborne wheat yellows
||Seedborne wheat yellows viroid
|-
|Tobacco mosaic

Tobacco mosaic virus

Tobacco mosaic virus is a positive-sense single stranded RNA virus that infects plants, especially tobacco and other members of the family Solanaceae. The infection causes characteristic patterns on the leaves . TMV was the first virus to be discovered...

||genus Tobamovirus

Tobamovirus

The genus Tobamovirus contains viruses with a positive sense RNA genome that infect plants. The most common tobamovirus is probably tobacco mosaic virus, which infects tobacco and other plants including potato, tomato, and squash. The name Tobamovirus comes from the host and symptoms: Toba for...

, Tobacco mosaic virus (TMV)

Tobacco mosaic virus

Tobacco mosaic virus is a positive-sense single stranded RNA virus that infects plants, especially tobacco and other members of the family Solanaceae. The infection causes characteristic patterns on the leaves . TMV was the first virus to be discovered...

|-
|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

Wheat dwarf virus

Wheat dwarf virus is a plant pathogenic virus of the family Geminiviridae. The two isolates of this virus effect both what and barley. It is spread by the leafhopper Psammotettix alienus.-External links:**...

 (WDV)
|-
|Wheat European striate mosaic
||genus Tenuivirus

Tenuivirus

Tenuivirus ls a name of genera of plant viruses. The type member is "Rice Stripe Virus." Other members of this genera include "Maize Stripe Virus," "Rice Hoja Blanca Virus'," and "Iranian Wheat Strip Virus." These plant viruses cause diseases in their host plants...

, Wheat European striate mosaic virus (EWSMV)
|-
|Wheat rosette stunt
||see Cereal northern mosaic
|-
|Wheat soilborne mosaic
||genus Furovirus

Furovirus

The Furovirus genus consists of rod shaped viruses enclosing bipartite , single-stranded, positive-sense RNA genomes. The type species of the genus is the soil borne wheat mosaic virus or SBWMV. These viruses infect plants of the grass family as well as fungi, infecting fungal vectors of the...

, Wheat soil-borne mosaic virus

Wheat soil-borne mosaic virus

Soil-borne wheat mosaic virus is a plant pathogenic virus vectored by plasmodiophorid Polymyxa graminis.-External links:**...

 (SBWMV)
|-
|Wheat soilborne yellow mosaic
||Wheat soil-borne yellow mosaic virus
|-
|Wheat spindle streak mosaic
||a strain of Wheat yellow mosaic virus

Wheat yellow mosaic virus

Wheat yellow mosaic virus is a plant pathogenic virus of the family Potyviridae.-External links:**...

|-
|Wheat spot mosaic
||Probable virus or phytoplasma
|-
|Wheat streak mosaic
||genus Rymovirus, Wheat streak mosaic virus

Wheat streak mosaic virus

Wheat streak mosaic virus is a plant pathogenic virus of the family Potyviridae.-External links:**...

 (WSMV)
|-
|Wheat striate mosaic
||see Wheat American striate mosaic
|-
|Wheat yellow leaf
||genus Closterovirus

Closterovirus

Closterovirus, also known as beet yellows viral group, is a plant-infecting viral genus included in family Closteroviridae. This genus has a probably worldwide distribution and includes among other viral species the Beet yellows virus and the tentatively assigned Citrus tristeza virus, rather...

, Wheat yellow leaf virus

Wheat yellow leaf virus

Wheat yellow leaf virus is a wheat , barley , rye , and oat pathogenic virus of the family Closteroviridae. WYLV virions are 1600-1850 nm in length and 10 nm in diameter. The virus, like other members of its genus, is transmitted by aphids...

 (WYLV)
|-
|Wheat yellow mosaic
||Wheat yellow mosaic virus

Wheat yellow mosaic virus

Wheat yellow mosaic virus is a plant pathogenic virus of the family Potyviridae.-External links:**...

 = Wheat spindle streak mosaic virus

Wheat spindle streak mosaic virus

Wheat spindle streak mosaic virus is a plant pathogenic virus of the family Potyviridae.-External links:**...

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|}

Phytoplasmal diseases

{| class="wikitable" style="clear"
! colspan=2| Phytoplasmal diseases

|-
|Aster yellows
||Aster yellows

Aster yellows

Aster yellows is a chronic, systemic plant disease caused by a bacterium-like organism called a phytoplasma. The aster yellows phytoplasma affects 300 species in 38 families of broad-leaf herbaceous plants, primarily in the aster family. Symptoms are variable and can include phyllody, virescence,...

 phytoplasma

Phytoplasma

Phytoplasma are specialised bacteria that are obligate parasites of plant phloem tissue and transmitting insects . They were first discovered by scientists in 1967 and were named mycoplasma-like organisms or MLOs. They cannot be cultured in vitro in cell-free media...

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