Diseases of Tobacco
(Nicotiana tabacum L.)

H. D. Shew, primary collator (last update 2/19/93)

BACTERIAL DISEASES

Angular leaf spot

Pseudomonas syringae pv. tabaci (Wolf & Foster) Young et al.

Granville wilt

Pseudomonas solanacearum (Smith) Smith

Hollow stalk

Erwinia carotovora subsp. carotovora (Jones) Bergey et al.

E. carotovora subsp. atroseptica (van Hall) Dye

Leaf gall

Rhodococcus fascians (Tilford) Goodfellow

Wildfire

Pseudomonas syringae pv. tabaci (Wolf & Foster) Young et al.

FUNGAL DISEASES

Anthracnose

Colletotrichum destructivum O'Gara

(teleomorph: Glomerella glycines F. Lehm. and F.A. Wolf)

Barn spot

Cercospora nicotianae Ellis & Everh.

Barn rot

Several fungi and bacteria

Black root rot

Thielaviopsis basicola (Berk. & Broome) Ferraris

Black shank

Phytophthora parasitica Dastur var. nicotianae (Breda de
   Haan) Tucker

P. nicotianae Breda de Haan var. nicotianae G.M.
   Waterhouse

Blue mold (downy mildew)

Peronospora tabacina D.B. Adam

= P. hyoscyami de Bary f. sp. tabacina

Brown spot

Alternaria alternata (Fr.:Fr.) Keissl.

Charcoal rot

Macrophomina phaseolina (Tassi) Goidanich

Collar rot

Sclerotinia sclerotiorum (Lib.) de Bary

Damping-off, Pythium

Pythium spp.

P. aphanidermatum (Edson) Fitzp.

P. ultimum Trow

Frogeye leaf spot

Cercospora nicotianae Ellis & Everh.

Fusarium wilt

Fusarium oxysporum Schlechtend.:Fr. (several f. sp.)

Gray mold

Botrytis cinerea Pers.:Fr.

(teleomorph: Botryotinia fuckeliana (de Bary) Whetzel)

Olpidium seedling blight

Olpidium brassicae (Woronin) P.A. Dang.

Phyllosticta leaf spot

Phyllosticta nicotiana Ellis & Everh.

Powdery mildew

Erysiphe cichoracearum DC.

Ragged leaf spot

Phoma exigua Desmaz. var. exigua

= Ascochyta phaseolorum Sacc.

Scab

Hymenula affinis (Fautrey & Lambotte) Wollenweb.

= Fusarium affine Fautrey & Lambotte

Sore shin and damping-off

Rhizoctonia solani Kühn

(teleomorph: Thanatephorus cucumeris (A.B. Frank) Donk)

Southern stem rot (southern blight)

Sclerotium rolfsii Sacc.

(teleomorph: Athelia rolfsii (Cursi) Tu & Kimbrough)

Stem rot of tranplants

Pythium spp.

Target spot

Rhizoctonia solani Kühn

Verticillium wilt

Verticllium albo-atrum Reinke & Berthier

V. dahliae Kleb.

MISCELLANEOUS DISEASES OR DISORDERS

Brown root rot

Pratylenchus spp. (nematodes)

Drought spot

Drought

False broomrape

Unknown

Frenching

Metabolite of Bacillus cereus Frankland & Frankland

Stem break (in Europe)

Ditylenchus dipsaci (Kühn) Filipjev (nematodes)

Sunscald

High light intensity and high temperatures

Weather fleck

Ozone

NEMATODES, PARASITIC

Bulb and stem (stem break)

Ditylenchus dipsaci (Kühn) Filipjev (in Europe)

Cyst

Globodera solanacearum (Miller & Gray) Behrens

= G. virginiae (Miller & Gray) Behrens

G. tabacum (Lownsbery & Lownsbery) Behrens

Dagger, American

Xiphinema americanum Cobb

Foliar

Aphelenchoides ritzemabosi (Schwartz) Steiner

Lesion

Pratylenchus brachyurus (Godfrey) Filipjev &
   Schuurmans-Stekhoven

P. penetrans (Cobb) Filipjev & Schuurmans-Stekhoven

Pratylenchus spp.

Reniform

Rotylenchulus reniformis Linford & Oliveira

Root-knot

Meloidogyne arenaria (Neal) Chitwood

M. hapla Chitwood

M. incognita (Kofoid & White) Chitwood

M. javanica (Treub) Chitwood

Spiral

Helicotylenchus spp.

Stubby-root

Paratrichodorus spp.

Trichodorus spp.

Stunt

Merlinius spp.

Tylenchorhynchus spp.

PARASITIC HIGHER PLANTS

Broomrape

Orobanche ramosa L.

O. ludoviciana Nutt.

Dodder

Cuscuta spp.

Witchweed

Striga gesnerioides (Willd.) Vatke

VIRUS DISEASES

Alfalfa mosaic

Alfalfa mosaic virus

Aster yellows

MLO

Beet curly top

Beet curly top virus

Bushy top

Tobacco vein distorting virus and tobacco bushy top virus in combination

Cucumber mosaic

Cucumber mosaic virus

Peanut stunt

Peanut stunt virus

Rosette disease

Tobacco vein distorting virus and tobacco mottlevirus in combination

Stolbur (Europe only)

MLO

Tobacco etch

Tobacco etch virus

Tobacco leaf curl

Tobacco leaf curl virus

Tobacco mosaic

Tobacco mosaic virus

Tobacco necrosis

Tobacco necrosis virus

Tobacco rattle

Tobacco rattle virus

Tobacco ring spot

Tobacco ring spot virus

Tobacco streak

Tobacco streak virus

Tobacco stunt (Japan only)

Tobacco stunt virus

Tobacco vein mottling

Tobacco vein mottling virus

Tomato spotted wilt

Tomato spotted wilt virus

Vein banding

Potato virus Y

Wound tumor

Wound tumor virus