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​Diseases of Pepper (Capsicum L.)

Revised by M. L. Lewis Ivey (last updated 12/2/15)

BACTERIAL DISEASES

Bacterial canker

Clavibacter michiganensis subsp. michiganensis (Smith) Davis et al.

       (syn. Corynebacterium michiganensis)

Bacterial spot

Xanthomonas euvesicatoria Jones et al.

X. gardneri (ex Šutić) Jones et al.

X. perforans Jones et al.

X. vesicatoria (ex Doidge) Vauterin et al.

       (syn. X. campestris pv. vesicatoria (ex Doidge) Vauterin et al.)

Bacterial wilt

Ralstonia solanacearum (Smith) Yabuuchi et al.

Syringae seedling blight and leaf spot

Pseudomonas syringae pv. syringae (van Hall)

Postharvest Diseases

Bacterial soft rot

Dickeya chrysanthemi (Burkholder et al.)

Pectobacterium carotovora (L. R. Jones)

P. carotovora subsp. atroseptica (van Hall)

P. carotovora subsp. carotovora (L. R. Jones)

Pseudomonas spp.

FUNGAL AND RELATED DISEASES

Anthracnose

Colletotrichum acutatum Simmonds

       (syn. Glomerella acutata Guerber & Correll)

C. coccodes (Wallr.) Hughes

C. gloeosporioides (Penz.) Penz. & Sacc

       (syn. G. cingulata [Stoneman] Spauld & Schrenk)

C. truncatum (Schwein.) Andrus & W. D. Moore

       (syn. C. capsici [Syd.] Butler & Bisby)

Cercospora (Frogeye) leaf spot

Passalora capsicicola (Vassiljevsky) Braun & Freire

       (syn. Cercospora capsici Heald & Wolf)

Charcoal rot

Macrophomina phaseolina (Tassi) Goid.

Choanephora blight (Wet rot)

Choanephora cucurbitarum (Berk. & Ravenel) Thaxt.

Damping-off and root rot

Fusarium spp.

Phytophthora spp.

Pythium aphanidermatum (Edson) Fitzp.

Pythium myriotylum Drechs.

Pythium ultimum (Trow)

       (syn. Globisporangium ultimum [Trow] Uzuhashi et al.)

Rhizoctonia solani Kϋhn

Downy mildew

Peronospora hyoscyami f. sp. tabacina (Rabenh.) de Bary

       (syn. P. tabacina Adam)

Fusarium stem rot

Fusarium solani (Mart.) Sacc.

Fusarium wilt

Fusarium oxysporum Schltdl.:Fr.

       (syn. F. oxysporum f. sp. capsici nov.)

Gray leaf spot

Stemphylium lycopersici (Enjoji) Yamamoto

       (syn. S. floridanum Hanson & Weber)

S. solani Weber

Gray mold

Botrytis cinerea Pers.:Fr.

Phytophthora blight

Phytophthora capsici Leonian

Powdery mildew

Leveillula taurica (Lév.) Arnaud

       (syns. Oidiopsis sicula Scalia; O. taurica Salmon)

Southern blight

Sclerotium rolfsii Sacc.

       (syn. Athelia rolfsii [Curzi] Tu & Kimbrough)

Verticillium wilt

Verticillium albo-atrum Reinke & Berthold

V. dahliae Kleb.

White mold

Sclerotinia sclerotiorum (Lib.) de Bary

Postharvest Diseases

Alternaria rot

Alternaria alternata (Fries) Keissler

Botrytis fruit rot

Botrytis cinerea Pers.:Fr.

Rhizopus rot

Rhizopus stolonifer (Ehrenb.:Fr.) Vuill.

NEMATODES (Parasitic)

Causing Major Diseases

Root-knot nematodes:

Meloidogyne arenaria (Neal) Chit.

M. hapla Chit.

M. incognita (Kofoid & White) Chit.

M. javanica (Treub) Chit.

Sting nematode:

Belonolaimus longicaudatus Rau

Causing Minor Diseases

False root-knot nematode:

Nacobbus aberrans (Thorne)

Lesion nematode:

Pratylenchus penetrans (Cobb)

Stubby-root nematodes:

Paratrichodorus spp.

Trichodorus spp.

Reniform nematode:

Rotylenchulus reniformis Linford & Oliveira

Other nematodes:

Criconemella spp.

Dolichodorus heterocephalus Cobb

Helicotylenchus dihystera (Cobb) Sher.

Hemicycliophora arenaria Raski

Radopholus similis (Cobb) Thorne

NONINFECTIOUS DISORDERS AND DAMAGE

Blossom-end rot

Deficiency of calcium in fruit

Flower and flower bud drop

High temperatures sustained for 5 or more days

Fruit cracking

Fruit rapidly takes up fluid and the skin cannot accommodate expansion

Sunscald

Exposure of fruit to sunlight and heat

PARASITIC PLANT

Dodder

Cuscuta spp.

VIRAL DISEASES

Alfalfa mosaic

Genus Alfamovirus; Alfalfa mosaic virus (AMV)

Andean potato mottle

Genus Comovirus; Andean potato mottle virus (APMoV)

Beet curly top

Genus Curtovirus; Beet curly top virus (BCTV)

Beet western yellows

Genus Luteovirus; Beet western yellows virus (BWYV)

Broad bean wilt

Genus Fabavirus; Broad bean wilt virus 1 (BBWV-1), Broad bean wilt virus 2 (BBWV-1)

Capsicum chlorosis

Genus Tospovirus; Capsicum chlorosis virus

Carrot mottle

Genus Umbravirus; Carrot mottle virus (CMoV)

Chili leaf curl

Genus Begomovirus; Chili leaf curl virus (Oman)

       (syn. Tobacco leaf curl; Tobacco leaf curl virus)

Chili veinal mottle

Genus Potyvirus; Chili veinal mottle virus (ChiVMV)

Chino del tomate

Genus Begomovirus; Chino del tomate virus (CdTV)

       (syn. Tomato leaf crumple virus)

Cucumber mosaic

Genus Cucumovirus; Cucumber mosaic virus (CMV)

Eggplant mosaic

Genus Tymovirus; Eggplant mosaic virus (EPMV)

Eggplant mottle dwarf

Genus Nucleorhabdovirus; Eggplant mottled dwarf virus

Henbane mosaic

Genus Potyvirus; Henbane mosaic virus

Impatiens necrotic spot

Genus Tospovirus; Impatiens necrotic spot virus (INSV)

Indian peanut clump

Genus Pecluvirus; Indian peanut clump virus (IPCV)

Lychnis ringspot

Genus Hordeivirus; Lychnis ringspot virus

Moroccan pepper

Genus Tombusvirus; Moroccan pepper virus (MPV)

Paprika mild mottle

Genus Tobamovirus; Paprika mild mottle virus (PaMMV)

       (syn. Paprika mild mottle virus [PMMV])

Pea early browning

Genus Tobravirus; Pea early browning virus (PEBV)

Peanut stunt virus

Genus Cucumovirus; Peanut stunt virus (PSV)

Pepper golden mosaic

Genus Begomovirus; Pepper golden mosaic virus

       (syn. Serrano golden mosaic virus [SGMV])

Pepper huasteco yellow vein

Genus Begomovirus; Pepper huasteco yellow vein virus (PHYVV)

       (syn. Pepper hausteco; Pepper hausteco virus)

Pepper mild mottle

Genus Tobamovirus; Pepper mild mottle virus (PMMV)

Pepper mild tigre

Genus Begomovirus; Pepper mild tigre virus

Pepper mottle

Genus Potyvirus; Pepper mottle virus (PepMoV)

Pepper veinal mottle

Genus Potyvirus; Pepper veinal mottle virus (PVMV)

Peru tomato mosaic

Genus Potyvirus; Peru tomato mosaic virus (PMV)

       (syn. Peru tomato; Peru tomato virus)

Petunia asteroid mosaic

Genus Tombusvirus; Petunia asteroid mosaic virus

Physalis mottle

Genus Tymovirus; Physalis mottle virus

       (syn. Belladonna mottle; Belladonna mottle virus [Iowa] [BMV])

Potato aucuba mosaic

Genus Potexvirus; Potato aucuba mosaic virus (PAMV)

Potato leaf roll

Genus Polerovirus; Potato leaf roll virus (PLrV or PLRV)

Potato mop-top

Genus Pomovirus; Potato mop-top virus (PMTV)

Potato virus A

Genus Potyvirus; Potato virus A (PVA)

Potato virus X

Genus Potexvirus; Potato virus X (PVX)

Potato virus Y

Genus Potyvirus; Potato virus Y (PVY)

Sinaloa tomato leaf curl

Genus Begomovirus; Sinaloa tomato leaf curl virus (TCLV)

Tobacco etch

Genus Potyvirus; Tobacco etch virus (TEV)

Tobacco mild green mosaic

Genus Tobamovirus; Tobacco mild green mosaic (TMGMV)

Tobacco mosaic

Genus Tobamovirus; Tobacco mosaic virus (TMV)

Tobacco rattle

Genus Tobravirus; Tobacco rattle virus (TRV)

Tobacco ringspot

Genus Nepovirus; Tobacco ringspot virus (TRSV)

Tobacco streak

Genus Ilarvirus; Tobacco streak virus (TSV)

       (syn. Tobacco streak virus [TOBSV])

Tomato mosaic

Genus Tobamovirus; Tomato mosaic virus (ToMV)

Tomato necrotic dwarf

Genus unassigned; Tomato necrotic dwarf virus

Tomato ringspot

Genus Nepovirus; Tomato ringspot virus (ToRSV)

Tomato spotted wilt

Genus Tospovirus; Tomato spotted wilt virus (TSWV)