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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)