# List of potato diseases

This is a list of diseases and disorders found in potatoes.

## Bacterial diseases

Bacterial Diseases :
| Bacterial wilt = brown rot | Ralstonia solanacearum = Pseudomonas solanacearum |
| Blackleg and bacterial soft rot | Pectobacterium carotovorum subsp. atrosepticum = Erwinia carotovora subsp. atroseptica P. c. subsp. carotovorum = E. c. subsp. carotovora P. chrysanthemi = E. chrysanthemi Dickeya solani |
| Pink eye | Pseudomonas fluorescens |
| Ring rot | Clavibacter michiganensis subsp. sepedonicus = Corynebacterium sepedonicum |
| Common scab | Streptomyces scabiei = S. scabies S. acidiscabies S. turgidiscabies |
| Zebra chip = Psyllid yellows? | Candidatus Liberibacter solanacearum |

## Fungal diseases

Fungal diseases :
| Black dot | Colletotrichum coccodes = Colletotrichum atramentarium |
| Brown spot and Black pit | Alternaria alternata = Alternaria tenuis |
| Cercospora leaf blotch | Mycovellosiella concors = Cercospora concors C. solani C. solani-tuberosi |
| Charcoal rot | Macrophomina phaseolina = Sclerotium bataticola] |
| Choanephora blight | Choanephora cucurbitarum |
| Common rust | Puccinia pittieriana |
| Deforming rust | Aecidium cantensis |
| Early blight | Alternaria solani |
| Fusarium dry rot | Fusarium spp. Gibberella pulicaris = F. solani Other spp. include: F. avenaceum F. oxysporum F. culmorum Less common spp. include: F. acuminatum F. equiseti F. crookwellense |
| Fusarium wilt | Fusarium spp. F. avenaceum F. oxysporum F. solani f. sp. eumartii |
| Gangrene | Phoma solanicola f. foveata Ph. foveata = Ph. exigua var. foveata = Ph. e. f. sp. foveata Ph. e. var. exigua |
| Gray mold | Botrytis cinerea Botryotinia fuckeliana [teleomorph] |
| Phoma leaf spot | Ph. andigena var. andina |
| Powdery mildew | Erysiphe cichoracearum |
| Rhizoctonia canker and black scurf | Rhizoctonia solani |
| Rosellinia black rot | Rosellinia sp. Dematophora sp. [anamorph] |
| Septoria leaf spot | S. lycopersici var. malagutii |
| Silver scurf | Helminthosporium solani |
| Skin spot | Polyscytalum pustulans |
| Stem rot (southern blight) | Athelia rolfsii |
| Thecaphora smut | Angiosorus solani = Thecaphora solani |
| Ulocladium blight | Ulocladium atrum |
| Verticillium wilt | Verticillium albo-atrum V. dahliae |
| Wart | Synchytrium endobioticum |
| White mold | Sclerotinia sclerotiorum |

## Protistan diseases

Protistan diseases :
| Late blight (oomycete) | Phytophthora infestans |
| Leak (oomycete) | Pythium spp. Pythium ultimum var. ultimum = Pythium debaryanum Pythium aphanidermatum Pythium deliense |
| Pink rot (oomycete) | Phytophthora spp. Phytophthora cryptogea Phytophthora drechsleri Phytophthora erythroseptica Phytophthora megasperma Phytophthora nicotianae var. parasitica |
| Powdery scab (Rhizaria) | Spongospora subterranea f.sp. subterranea |

## Viral and viroid diseases

Viral and viroid diseases :
| Alfalfa mosaic virus | genus Alfamovirus, Alfalfa mosaic virus (AMV) |
| Andean potato latent virus | genus Tymovirus, Andean potato latent virus (APLV) |
| Andean potato mottle virus | genus Comovirus, Andean potato mottle virus (APMV) |
| Arracacha virus B - Oca strain | genus Nepovirus, Arracacha virus B Oca strain (AVB-O) |
| Beet curly top virus | genus Curtovirus, Beet curly top virus (BCTV) |
| Cucumber mosaic virus | genus Cucumovirus, Cucumber mosaic virus (CMV) |
| Eggplant mottle dwarf virus | genus Rhabdovirus, Eggplant mottle dwarf virus (EMDV) |
| Potato aucuba mosaic virus | genus Potexvirus, Potato aucuba mosaic virus (PAMV) |
| Potato black ringspot virus | genus Nepovirus, Potato black ringspot virus (PBRSV) |
| Potato deforming mosaic virus | genus Geminiviridae Potato deforming mosaic virus subgroup III, (PDMV) |
| Potato latent virus | genus Carlavirus, Potato latent virus (PLV) |
| Potato leafroll virus | genus Luteovirus, Potato leafroll virus (PLRV) |
| Potato mop-top virus (spraing of tubers) | genus Furovirus, Potato mop-top virus (PMTV) |
| Potato rugose mosaic | genus Potyvirus, Potato virus Y (PVY, strains O, N and C) |
| Potato stem mottle (spraing of tubers) | genus Tobravirus, Tobacco rattle virus (TRV) |
| Potato spindle tuber | Potato spindle tuber viroid (PSTVd) |
| Potato yellow dwarf virus | genus Nucleorhabdovirus, Potato yellow dwarf virus (PYDV) |
| Potato yellow mosaic virus | genus Geminiviridae, Potato yellow mosaic virus (PYMV); subgroup III |
| Potato yellow vein virus | Potato yellow vein virus (PYVV) |
| Potato yellowing virus | genus Alfamovirus, Potato yellowing virus (PYV) |
| Potato virus A | genus Potyvirus, Potato virus A (PVA) |
| Potato virus M | genus Carlavirus, Potato virus M (PVM) |
| Potato virus S | genus Carlavirus, Potato virus S (PVS) |
| Potato virus H | genus Carlavirus, Potato virus H (PVH) |
| Potato virus T | genus Trichovirus, Potato virus T |
| Potato virus U | genus Nepovirus, Potato virus U (PVU) |
| Potato virus V | genus Potyvirus, Potato virus V (PVV) |
| Potato virus X | genus Potexvirus, Potato virus X (PVX) |
| Potato virus Y | genus Potyvirus, Potato virus Y (PVY) |
| Solanum apical leaf curling virus | Geminiviridae, Solanum apical leaf curling virus (SALCV) subgroup III |
| Sowbane mosaic virus | genus Sobemovirus, Sowbane mosaic virus (SoMV) |
| Tobacco mosaic virus | genus Tobamovirus, Tobacco mosaic virus (TMV) |
| Tobacco necrosis virus | genus Necrovirus, Tobacco necrosis virus (TNV) |
| Tobacco rattle virus | genus Tobravirus, Tobacco rattle virus (TRV) |
| Tobacco streak virus | genus Ilarvirus, Tobacco streak virus (TSV) |
| Tomato black ring virus | genus Nepovirus, Tomato black ring virus (ToBRV) |
| Tomato mosaic virus | genus Tobamovirus, Tomato mosaic virus (ToMV) |
| Tomato spotted wilt virus | genus Tospovirus, Tomato spotted wilt virus (TSWV) |
| Tomato yellow mosaic virus | genus Geminiviridae, Tomato yellow mosaic virus (ToYMV) subgroup III |
| Wild potato mosaic virus | genus Potyvirus, Wild potato mosaic virus (WPMV) |

## Nematode parasitic

Nematode parasitic :
| Potato cyst nematode | Globodera rostochiensis Globodera pallida |
| Lesion nematode | Pratylenchus spp. Pratylenchus brachyurus Pratylenchus penetrans Other species include: Pratylenchus scribneri Pratylenchus neglectus Pratylenchus thornei Pratylenchus crenatus Pratylenchus andinus Pratylenchus vulnus Pratylenchus coffeae |
| Potato rot nematode | Ditylenchus destructor |
| Root knot nematode | Meloidogyne spp. Meloidogyne hapla Meloidogyne incognita Meloidogyne javanica Meloidogyne chitwoodi |
| Sting nematode | Belonolaimus longicaudatus |
| Stubby-root nematode | Paratrichodorus spp. Trichodorus spp. |

## Phytoplasmal diseases

Phytoplasmal diseases :
| Aster yellows | Aster yellows group of phytoplasmas |
| Witches'-broom | Witches’ broom phytoplasma |
| BLTVA | The beet leafhopper-transmitted virescence agent |

## Miscellaneous diseases and disorders

Miscellaneous diseases and disorders :
| Aerial tubers | Phytoplasma infection or anything that constricts the stem, including but not limited to Rhizoctonia canker, heat necrosis, chemical injury, mechanical injury, wind injury |
| Air pollution injury | Photochemical oxidants (primarily ozone), sulfur oxides |
| Black heart | Oxygen deficiency of internal tuber tissue |
| Blackspot bruise | Bruising, pressure contact |
| Elephant hide | Roughening of tuber skin due to physiological or environmental causes |
| Hollow heart | Excessively rapid tuber enlargement |
| Internal brown spot = heat necrosis | Oxygen deficiency of tuber accompanying high soil temperature |
| Jelly end rot | Carbohydrate translocation due to second growth |
| Physiological leaf roll | Response to adverse environment |
| Psyllid yellows | Toxic saliva of the potato (tomato) psyllid, Paratrioza cockerelli |
| Shatter bruise | Mechanical damage to tuber |
| Skinning | Mechanical damage to tuber |
| Stem-end browning | Exact cause(s) unknown, chemical injury, viruses or other pathogens. |