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Common Names of Plant Diseases
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DisplayTitle
Diseases of Cucurbits
(
Citrullus, Cucumis, Cucurbita
spp. and others)
Page Content
A. P. Keinath, W. M. Wintermantel, T. A. Zitter, and A. Y. Rossman, primary collators (last update: 6/15/2018)
BACTERIAL DISEASES
Angular leaf spot
Pseudomonas syringae
pv.
lachrymans
(Smith & Bryan) Young et al.
Bacterial brown spot
Pantoea ananatis
Serrano) Mergaert, Verdonck, & Kersters
(syn.
Pantoea ananatis
pv.
ananatis
(Serrano) Mergaert, Verdonck, & Kersters)
Bacterial fruit blotch
Acidovorax citrulli
Schaad et al.
(syns.
Acidovorax avenae
subsp.
citrulli
(Schaad et al.) Willems et al.;
Pseudomonas
avenae
subsp.
citrulli
(Schaad et al.) Hu et al.)
Bacterial rind necrosis
Erwinia
spp.
Bacterial soft rot
Pectobacterium carotovorum
(Jones) Waldee
(syn.
Erwinia carotovora
subsp.
carotovora
(Jones) Dye)
Bacterial wilt
Erwinia tracheiphila
(Smith) Bergey et al.
Cichorii seedling blight*
Pseudomonas cichorii
(Swingle) Stapp
Cucurbit yellow vine disease
Serratia marcescens
Bizio
Syringae blight and leaf spot
Pseudomonas syringae
pv.
syringae
van Hall
Viridiflava white spot*
Pseudomonas viridiflava
(Burkholder) Dowson
Xanthomonas leaf spot (formerly bacterial leaf spot)
Xanthomonas cucurbitae
(ex Bryan) Vauterin et al.
PHYTOPLASMA DISEASE
Aster yellows
‘
Candidatus
Phytoplasma asteris’ (Lee et al.)
FUNGAL DISEASES
Acrocalymma vine decline
Acrocalymma vagum
(D. F. Farr) Crous & Trakun.
(syn.
Rhizopycnis vagum
D. F. Farr)
Alternaria leaf blight
Alternaria citrullicola
Woudenb. & Crous
A. cucumerina
(Ellis & Everh.) J. A. Elliott
Alternaria leaf spot
Alternaria alternata
(Fr.:Fr.) Keissl. f. sp.
cucurbitae
Vakal.
Alternaria rot
Alternaria alternata
(Fr.) Keissl.
(syn.
A. tenuis
Nees)
Anthracnose
Colletotrichum
magnum
(S. F. Jenkins & Winstead) Rossman & W. C. Allen (on fruit)
C. orbiculare
Damm, P. F. Cannon & Crous
(syns.
Colletotrichum lagenaria
(Pass.) Ellis & Halst.;
Glomerella
lagenaria
F. Stevens)
Belly rot
Rhizoctonia solani
J. G. Kühn
(syn.
Thanatephorus cucumeris
(A. B. Frank) Donk)
Black root rot
Thielaviopsis basicola
(Berk. & Broome) Ferraris
Black rot (see Gummy stem blight)
Blue mold rot
Penicillium
spp.
Cercospora leaf spot
Cercospora citrullina
Cooke
Charcoal rot (vine decline and fruit rot)
Macrophomina phaseolina
Goid.
Choanephora fruit rot (Choanephora wet rot)
Choanephora
cucurbitarum
(Berk. & Ravenel) Thaxt.
Crater rot (fruit), Myrothecium canker
Myrothecium roridum
Tode:Fr.
Damping-off
Acremonium
spp.
Fusarium equiseti
(Corda) Sacc.
(syn.
Gibberella intricans
Wollenw.)
Fusarium
spp.
Rhizoctonia solani
J. G. Kühn
(syn.
Thanatephorus cucumeris
(A. B. Frank) Donk)
Thielaviopsis basicola
(Berk. & Broome) Ferraris
Other fungi
(
see also
Oomycete Diseases)
Fusarium crown and foot rot
Fusarium solani
(Mart.) Sacc. f. sp.
cucurbitae
W. C. Snyder & H. N. Hansen race 1
(syns.
Fusarium
solani
(Mart.) Sacc. species complex [FSSC] 5;
Nectria haematococca
Berk. & Broome MP I)
Fusarium fruit rot
Fusarium acuminatum
Ellis & Everh.
F. avenaceum
(Fr.:Fr.) Sacc.
F. culmorum
(Wm. G. Sm.) Sacc.
F. equiseti
(Corda) Sacc.
F. graminearum
Schwabe
(syn.
Gibberella zeae
(Schwein.) Petch)
F. graminum
Corda
F. incarnatum
(Desm.) Sacc.
(syn.
F. semitectum
Berk. & Ravenel)
F. oxysporum
Schltdl.:Fr. f. sp.
melonis
W. C. Snyder & H. N. Hansen
F. petroliphilum
(Q. T. Chen & X. H. Fu) Geiser, O’Donnell, Short & N. Zhang
(syns.
F. solani
(Mart.) Sacc. f. sp.
cucurbitae
W. C. Snyder & H. N. Hansen race 2;
Nectria haematococca
Berk. & Broome MP V)
F. scirpi
Lambotte & Fautrey
F. solani
(Mart.) Sacc. f. sp.
cucurbitae
W. C. Snyder & H. N. Hansen race 1
(syn.
Nectria haematococca
Berk. & Broome MP I)
F.
verticillioides
(Sacc.) Nirenberg
(syn.
F. moniliforme
J. Sheld.)
Fusarium
spp.
Fusarium
root and stem rot*
Fusarium oxysporum
Schltdl.:Fr. f. sp.
radicis-cucumerinum
Vakal.
Fusarium wilt
Fusarium oxysporum
Schltdl.:Fr. (with these
formae speciales
):
f. sp.
benincasae
Gerlagh & Ester (wax gourd)*
f. sp.
cucumerinum
J. H. Owen (cucumber)
f. sp.
lagenariae
Matuo & I. Yamam. (bottle gourd, calabash gourd)*
f. sp.
luffae
Kawai et al. (loofah, vegetable sponge)*
f. sp.
melonis
W. C. Snyder & H. N. Hansen (melon)
f. sp.
momordicae
S. K. Sun & J. W. Huang (bitter melon)*
f. sp.
niveum
(E. F. Sm.) W. C. Snyder & H. N. Hansen (watermelon)
Gray mold
Botrytis cinerea
Pers.:Fr.
(syn.
Botryotinia fuckeliana
(de Bary) Whetzel)
Gummy stem blight, Black rot (fruit)
Stagonosporopsis caricae
(Sydow & P. Sydow) Aveskamp, Gruyter & Verkley
S. citrulli
M. T. Brewer & J. E. Stewart
S. cucurbitacearum
(Fr.) Aveskamp, Gruyter & Verkley
(syns.
Didymella bryoniae
(Auersw.) Rehm;
Phoma cucurbitacearum
(Fr.:Fr.) Sacc.;
Phyllosticta cucurbitacearum
Sacc.)
Lasiodiplodia vine decline, Lasiodiplodia fruit rot
Lasiodiplodia theobromae
(Pat.) Griffon & Maubl.
(syn.
Botryosphaeria rhodina
(Berk. & M. A. Curtis) Arx)
Monosporascus root rot and vine decline (Monosporascus wilt)
Monosporascus cannonballus
Pollack & Uecker
M. eutypoides
(Petr.) Arx
Myrothecium canker (see Crater rot)
Net spot
Leandria momordicae
Rangel
Phoma blight
Boeremia exigua
(Desm.) Aveskamp, Gruyter & Verkley var.
exigua
(syns.
Phoma exigua
Desm. var.
exigua;
Ascochyta phaseolorum
Sacc.)
Phomopsis black root rot*
Diaporthe sclerotioides
(Kesteren) Udayanga
(syn.
Phomopsis sclerotioides
Kesteren)
Phomopsis fruit rot
Diaporthe cucurbitae
(McKeen) Udayanga & Castl.*
(syn.
Phomopsis cucurbitae
McKeen)
D. melonis
Beraha & M. J. O’Brien
D. sojae
Lehman
(syn.
D. melonis
var.
brevistylospora
Tak. Kobayashi & Tak. Ohsawa)
D. ueckerae
Udayanga & Castl.
Pink mold rot
Trichothecium roseum
(Pers.:Fr.) Link
Pink root
Setophoma terrestris
(H. N. Hansen) Gruyter, Aveskamp & Verkley
(syns.
Phoma terrestris
H. N. Hansen;
Pyrenochaeta terrestris
(H. N. Hansen)
Gorenz, J. C. Walker & Larson)
Plectosphaerella root and hypocotyl rot
Plectosphaerella melonis
(Ts. Watan. & Mas. Sato) A. J. L. Phillips, Carlucci & M.L. Raimondo
(syns.
Acremonium
cucurbitacearum
Alfaro-García, W. Gams & J. García-Jim.;
Nodulisporium melonis
Ts. Watan. & Mas. Sato)
Plectosporium blight
Plectosphaerella cucumerina
(Lindf.) W. Gams
(syns.
Fusarium tabacinum
(J. F. H. Beyma) W. Gams;
Microdochium tabacinum
(J. F. H. Beyma) Arx;
Plectosporium tabacinum
(J. F. H. Beyma) M. E. Palm, W. Gams &
Nirenberg)
Powdery mildew
Golovinomyces cichoracearum
(DC.) V. P. Heluta
(syn.
Erysiphe cichoracearum
DC.)
Podosphaera xanthii
(Castagne) U. Braun & Shishkoff
(syns.
Sphaerotheca fuliginea
(Schltdl.) Pollacci;
S. fusca
(Fr.) S. Blumer)
Purple stem vine decline
Diaporthe melonis
Beraha & M. J. O’Brien
Red rot
Epicoccum nigrum
Link
Rhizopus soft rot
Rhizopus stolonifer
(Ehrenb.:Fr.) Vuill.
Scab, Gummosis
Cladosporium cucumerinum
Ellis & Arthur
Sclerotinia stem rot, Sclerotinia rot (fruit)
Sclerotinia sclerotiorum
(Lib.) de Bary
Septoria leaf spot
Septoria cucurbitacearum
Sacc.
Southern blight
Athelia rolfsii
(Curzi) C. C. Tu & Kimbr.
(syn.
Sclerotium rolfsii
Sacc.)
Target spot (Corynespora blight)
Corynespora cassiicola
(Berk. & M. A. Curtis) C. T. Wei
Ulocladium leaf spot
Ulocladium cucurbitae
(Letendre & Roum.) E. G. Simmons
Verticillium wilt
Verticillium albo-atrum
Reinke & Berthold
V. dahliae
Kleb.
Web blight
Rhizoctonia solani
J. G. K
ühn
(syn.
Thanatephorus cucumeris
(A. B. Frank) Donk)
OOMYCETE DISEASES
Damping-off
Phytophthora capsici
Leonian
Phytophthora drechsleri
Tucker
Phytophthora
spp.
Pythium aphanidermatum
(Edson) Fitzp.
Pythium irregulare
Buisman
(syn.
Globisporangium irregulare
(Buisman) Uzuhashi, Tojo & Kakish.)
Pythium ultimum
Trow
(syn.
Globisporangium ultimum
(Trow) Uzuhashi, Tojo & Kakish.)
Pythium
spp.
Downy mildew
Pseudoperonospora cubensis
(Berk. & M. A. Curtis) Rostovzev
Phytophthora crown and root rot, Phytophthora fruit rot
Phytophthora capsici
Leonian
Phytophthora
spp.
Pythium cottony leak (Pythium fruit rot)
Pythium aphanidermatum
(Edson) Fitzp.
P. oligandrum
Drechsler
P. ultimum
Trow
(syn.
Globisporangium ultimum
(Trow) Uzuhashi, Tojo & Kakish.)
Pythium
spp.
Root rot
Phytophthora drechsleri
Tucker
Pythium
aphanidermatum
(Edson) Fitzp.
Pythium
ultimum
Trow
(syn.
Globisporangium ultimum
(Trow) Uzuhashi, Tojo & Kakish.)
Sudden wilt
Pythium aphanidermatum
(Edson) Fitzp.
MISCELLANEOUS DISEASES AND DISORDERS
Air pollution injury
Ozone, sulfur dioxide, and others
Bitter fruit
Sunburn injury, physiologic stress
Blossom-end rot
Physiological disorder, calcium deficiency, moisture imbalance
Bottle neck of fruit
Incomplete pollination
Measles
Physiological disorder, salt toxicity
Sand burn
Physiological disorder
Sunburn, sunscald (fruit)
Intense (sunburn) or excessive (sunscald) injury caused by direct heat or solar radiation
Windburn
Physiological disorder
NEMATODES, PARASITIC
Burrowing
Radopholus
spp.
Dagger
Xiphinema americanum
Cobb
Xiphinema
spp.
Lance
Hoplolaimus
spp.
Lesion
Pratylenchus
thornei
Sher & Allen
Pratylenchus
spp.
Needle
Longidorus
spp.
Pin
Paratylenchus
projectus
Jenkins
Reniform
Rotylenchulus reniformis
Linford & Oliveira
Ring
Criconemella
spp.
Root-knot
Meloidogyne
arenaria
(Neal) Chitwood
M.
hapla
Chitwood
M.
incognita
(Kofoid & White) Chitwood
M.
javanica
(Treub) Chitwood
Spiral
Helicotylenchus microlobus
Perry
Stem and Bulb
Ditylenchus
spp.
Sting
Belonolaimus longicaudatus
Rau
Stubby-root
Paratrichodorus minor
(Colbran) Steiner
Paratrichodorus
spp.
Trichodorus
spp.
Stunt
Tylenchorhynchus claytoni
Steiner
VIRUS DISEASES
Cucumber green mottle mosaic
Cucumber green mottle mosaic virus
(CGMMV)
Cucumber leaf spot*
Cucumber leaf spot virus
(CLSV)
Cucumber mosaic
Cucumber mosaic virus
(CMV)
Cucumber pale fruit
Hop stunt viroid
(HSVd)
Cucumber vein yellowing*
Cucumber vein yellowing virus
(CVYV)
Cucurbit aphid-borne yellows
Cucurbit aphid-borne yellows virus
(CABYV)
Cucurbit chlorotic yellows*
Cucurbit chlorotic yellows virus
(CCYV)
Cucurbit leaf crumple
Cucurbit leaf crumple virus
(CuLCrV)
Cucurbit yellow stunting disorder
Cucurbit yellow stunting disorder virus
(CYSDV)
Curly top
Beet curly top virus
(BCTV)
Lettuce infectious yellows
Lettuce infectious yellows virus
(LIYV)
Melon chlorotic leaf curl*
Melon chlorotic leaf curl virus
(MCLCuV)
Melon necrotic spot
Melon necrotic spot virus
(MNSV)
Melon yellow spot*
Melon yellow spot virus (MYSV)
Melon yellowing*
Melon yellowing-associated virus
(MYaV)
Moroccan watermelon mosaic*
Moroccan watermelon mosaic virus
(MWMV)
Papaya ringspot
Papaya ringspot virus
Watermelon strain (PRSV-W)
Pseudoyellows
Beet pseudoyellows virus
(BPYV)
Squash leaf curl
Squash leaf curl virus
(SLCV)
Squash mosaic
Squash mosaic virus
(SqMV)
Squash vein yellowing
Squash vein yellowing virus
(SqVYV)
Squash yellow mild mottle*
Squash yellow mild mottle virus
(SYMMoV)
Tobacco ringspot
Tobacco ringspot virus
(TRSV)
Tomato leaf curl New Delhi*
Tomato leaf curl New Delhi virus
(ToLCNDV)
Tomato ringspot
Tomato ringspot virus
(ToRSV)
Watermelon chlorotic stunt*
Watermelon chlorotic stunt virus
(WmCSV)
Watermelon mosaic
Watermelon mosaic virus
(WMV)
Watermelon silver mottle*
Watermelon silver mottle virus
(WSMoV
Yellow vein mosaic*
Squash leaf curl China virus
(SLCCNV)
Squash leaf curl Philippines virus
(SLCPHV)
Zucchini yellow mosaic
Zucchini yellow mosaic virus
(ZYMV)
Uncommon and Regionally Specific Cucurbit-Infecting Viruses
Algerian watermelon mosaic virus*
Clover yellow vein virus
Cucumber necrosis virus
Melon chlorotic mosaic virus
Melon rugose mosaic virus*
Melon vein-banding mosaic virus*
Muskmelon vein necrosis virus
Ourmia melon virus*
Telfairia mosaic virus*
Watermelon bud necrosis virus*
Wild cucumber mosaic virus
Zucchini lethal chlorosis virus*
Zucchini tigre mosaic virus*
Zucchini yellow fleck virus*
*Not known to occur naturally on cucurbits in the United States.
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