Diseases of Peach and Nectarine
Peach: Prunus persica (L.) Batsch
Nectarine: P. persica var. nucipersica (Suckow) C.K. Schneid.

J. K. Uyemoto, J. M. Ogawa, and B. A. Jaffee, primary collators; updated by J. E. Adaskaveg, S. W. Scott, and H. Scherm (last update 5/23/01)

BACTERIAL DISEASES

Bacterial canker

Pseudomonas syringae pv. syringae van Hall 1902

Bacterial spot = bacteriosis

Xanthomonas arboricola pv. pruni (Smith 1903) Vauterin
    et al. 1995

= X. campestris pv. pruni (Smith 1903) Dye 1978

Crown gall

Agrobacterium tumefaciens (Smith and Townsend 1907) Conn 1942

Phony disease = phony peach

Xylella fastidiosa Wells et al. 1987

FUNGAL DISEASES

Alternaria rot

Alternaria alternata (Fr.:Fr.) Keissl.

Alternaria spp.

Anthracnose

Colletotrichum gloeosporioides (Penz.) Penz. & Sacc. in Penz.

    Glomerella cingulata (Stoneman) Spauld. & H. Schrenk

    [teleomorph]

C. acutatum J.H. Simmonds

Armillaria crown and root rot

Armillaria mellea (Vahl:Fr.) P. Kumm.

A. ostoyae (Romagn.) Herink

A. bulbosa (Barla) Kile & Watling

A. tabescens (Scop.) Dennis et al.

= Clitocybe tabescens (Scop.) Bres.

Brown rot blossom blight and fruit rot

Monilinia fructicola (G. Wint.) Honey

M. laxa (Aderhold & Ruhland) Honey

Cercospora leaf spot

Cercospora circumscissa Sacc.

C. rubrotincta Ellis & Everh.

Ceratocystis canker

Ceratocystis fimbriata Ellis & Halst.

Constriction canker = Fusicoccum canker, Phomopsis shoot blight

Phomopsis amygdali (Delacr.) Tuset & Portilla

= Fusicoccum amygdali Delacr.

Cytospora canker

Leucostoma persoonii Höhn.

    Cytospora leucostoma Sacc. [anamorph]

Fusarium canker

Fusarium spp.

Gummosis (blister canker in Japan)

Botryosphaeria dothidea (Moug.:Fr.) Ces & De Not.

= B. berengeriana De Not.

    Fusicoccum aesculi Corda [anamorph]

B. obtusa (Schwein.) Shoemaker

B. rhodina (Cooke) Arx

B. ribis Gross. & Duggar

Green fruit rot

Botrytis cinerea Pers.:Fr.

    Botryotinia fuckeliana (de Bary) Whetzel [teleomorph]

Monilinia fructicola (G. Wint.) Honey

M. laxa (Aderhold & Ruhland) Honey

Sclerotinia sclerotiorum (Lib.) de Bary

Leaf curl

Taphrina deformans (Berk.) Tul.

Phymatotrichopsis root rot

Phymatotrichopsis omnivorum (Duggar) Hennebert

= Phymatotrichum omnivorum Dugger

Phytophthora crown and root rot

Phytophthora cactorum (Lebert & Cohn) J. Schröt

P. cambivora (Petri) Buisman

P. citricola Sawada

P. citrophthora (R.E. Sm. & E.H. Sm.) Leonian

P. cryptogea Pethybr. & Lafferty

P. drechsleri Tucker

P. megasperma Drechs.

P. parasitica Dastur

P. syringae (Kleb.) Kleb.

Phytophthora sp.

Powdery mildew

Podosphaera clandestina (Wallr.:Fr.) Lév.

    Oidium sp. [anamorph]

Podosphaera leucotricha (Ellis. & Everh.) E.S. Salmon

Sphaerotheca pannosa (Wallr.:Fr.) Lév.

    O. leucoconium Desmaz. [anamorph]

Pythium root rot

Pythium ultimum Trow

Rhizoctonia root rot

Rhizoctonia solani Kühn

    Thanatephorus cucumeris (A.B. Frank) Donk
    [teleomorph]

Ripe fruit rots

    Aspergillus rot

Aspergillus niger Tiegh.

    Blue mold

Penicillium sp.

    Botrytis rot

Botrytis cinerea Pers.:Fr.

    Botryotinia fuckeliana (de Bary) Whetzel [teleomorph]

    Sour rot

Geotrichum candidum Link

Candida albicans (C.P. Robin) Berkhout

    Fusarium rot

Fusarium avenaceum (Fr.:Fr.) Sacc.

    Gibberella avenacea R.J. Cooke [teleomorph]

F. oxysporum Schlechtend.:Fr

F. solani (Mart.) Sacc.

    Nectria haematococca Berk. & Broome [teleomorph]

    Gilbertella rot

Gilbertella persicaria (E.D. Eddy) Hesseltine

    Phomopsis fruit rot

Phomopsis sp.

    Pink fruit rot

Trichothecium roseum (Pers.:Fr.) Link

    Rhizopus rot

Rhizopus arrhizus A. Fischer

R. circinans Tiegh.

R. stolonifer (Ehrenb.:Fr.) Vuill.

    Mucor rot

Mucor spp.

M. piriformis E. Fisch.

Rust

Tranzschelia discolor (Fuckel) Tranzschel & Litv. f. sp. persica Bolkan et al.

Scab

Cladosporium carpophilum Thuem.

= Fusicladium carpophilum (Thuem.) Oudem.

    Venturia carpophila E.E. Fisher [teleomorph]

Cladosporium spp.

Shot hole

Wilsonomyces carpophilus (Lév.) Adaskaveg et al.

= Stigmina carpophila (Lév.) Ellis

Silver leaf

Chondrostereum purpureum (Pers.:Fr.) Pouzar

Verticillium wilt

Verticillium dahliae Kleb.

Wood decay

(Pathogenicity has not been proven for these fungi; other wood decay fungi that cause significant diseases include Armillaria mellea, A. tabescens, and Chondrostereum purpureum.)

Antrodia albida (Fr.:Fr.) Donk

Ceriporia spissa (Schwein.) Rajchenberg

Coriolopsis gallica (Bull.:Fr.) Ryvarden

Daedaleopsis confragosa (Bolten:Fr) J. Schröt.

Dendrophora albobadia (Schwein.:Fr.) Chamuris

Fomitopsis cajanderi (P. Karst.) Kotlaba & Pouzar

F. meliae (Underw.) Gilb. & Ryvarden

F. nivosa (Berk.) Gilb. & Ryvarden

F. palustris (Berk. & M.A. Curtis) Gilb. & Ryvarden

F. pinicola (Sw.:Fr.) P. Karst.

F. rosea (Albertini & Schwein.:Fr.) P. Karst.

Ganoderma annularis (Fr.) Gilb.

G. applanatum (Pers.) Pat

G. brownii (Murrill) Gilb.

G. lobatum (Schwein.) G.F. Atk.

G. lucidum (Curtis:Fr.) P. Karst.

Gloeophyllum mexicanum (Mont.) Ryvarden

G. sepiarium (Wulfen:Fr.) P. Karst.

G. trabeum (Pers.:Fr.) Murrill

Gloeoporus dichrous (Fr.:Fr.) Bres.

Inonotus dryophilus (Berk.) Murrill

Irpex lacteus (Fr.:Fr.) Fr.

Laeticorticium roseum (Fr.) Donk

Laetiporus sulphureus (Bull.:Fr.) Murrill

Lenzites betulina (L.:Fr.) Fr.

Meruliopsis ambiguus (Berk.) Ginns

Oxyporus corticola (Fr.:Fr.) Ryvarden

O. latemarginatus (Durieu & Mont.) Donk

O. populinus (Schumach:Fr.) Donk

O. similis (Bres.) Ryvarden

Perenniporia fraxinophila (Peck) Ryvarden

P. medulla-panis (Jacq.:Fr.) Donk

Phanerochaete velutina (DC.:Fr.) P. Karst.

Phellinus ferreus (Pers.) Bourd. & Galzin

P. ferruginosus (Schrad.:Fr.) Pat.

P. gilvus (Schwein.:Fr.) Pat.

P. pomaceus (Pers.) Maire

Pycnoporus cinnabarinus (Jacq.:Fr.) P. Karst.

Schizophyllum commune Fr.:Fr.

S. paradoxa (Schrad.:Fr.) Donk

Stereum hirsutum (Willd.:Fr) S.F. Gray

S. ochraceo-flavum (Schwein.) Ellis

Trametes elegans (Spreng.:Fr.) Fr.

T. hirsuta (Wulfen.:Fr.) Pilát

T. pubescens (Schumach.:Fr.) Pilát

T. versicolor (L.:Fr.) Pilát

Trichaptum biforme (Fr.:Klotzsch) Ryvarden

Tyromyces chioneus (Fr.:Fr.) P. Karst.

T. galactinus (Berk.) J. Lowe

NEMATODES, PARASITIC

Dagger nematode

Xiphinema americanum Cobb

X. rivesi Dalmasso

Lesion nematode

Pratylenchus penetrans (Cobb) Filipjev & Schuurmans-Stekhoven

P. vulnus Allen & Jensen

Ring nematode

Mesocriconema xenoplax (Raski) Loof & de Grisse

= Criconemella xenoplax (Raski) Luc & Raski

Root knot nematode

Meloidogyne arenaria (Neal) Chitwood

M. hapla Chitwood

M. incognita (Kofoid & White) Chitwood

M. javanica (Treub) Chitwood

VIRAL and VIROID DISEASES

(Also uncharacterized graft-transmissible pathogens [GTP])

Asteroid spot = cherry Utah dixie spot

GTP

Bark and wood grooving

GTP

Blotch

GTP

Calico

GTP

Chlorosis

GTP

Chlorotic spot

GTP

Enation

Peach enation virus

Dark green sunken mottle

genus Trichovirus, Apple chlorotic leaf spot virus (ACLSV)

Latent mosaic

Peach latent mosaic viroid

Line pattern

genus Ilarvirus, Prunus necrotic ringspot virus (PNRSV)

genus Ilarvirus, Apple mosaic virus (ApMV)

Line pattern and leaf curl = cherry line pattern leaf curl

GTP (associated with an isometric particle)

Mosaic

Peach mosaic virus

Mottle

GTP

Mule's ear

GTP (associated with PNRSV)

Necrotic ringspot

genus Ilarvirus, Prunus necrotic ringspot virus (PNRSV)

Oil blotch

GTP

Plum pox = Sharka

genus Potyvirus, Plum pox virus (PPV)

Prunus stem pitting

genus Nepovirus, Tomato ringspot virus (ToRSV)

Purple mosaic

GTP

Rosette and decline

genus Ilarvirus, Prunus necrotic ringspot virus (PNRSV)

+ genus Ilarvirus, Prune dwarf virus (PDV)

Rosette mosaic

Peach rosette mosaic nepovirus

Seedling chlorosis

GTP

Shoot stunting (= almond enation)

genus Nepovirus, Tomato black ring virus

(TBRV)

Star mosaic

GTP

Stubby twig

GTP

Stunt

genus Ilarvirus, Prune dwarf virus (PDV) + genus Ilarvirus, Prunus necrotic ringspot virus (PNRSV)

Wart

GTP

Willow leaf rosette

Strawberry latent ringspot virus (SLRSV) + an unknown sap-transmissible virus

Yellow bud mosaic

genus Nepovirus, Tomato ringspot virus (ToRSV)

Yellow mosaic

GTP

Yellow mottle

GTP

PHYTOPLASMAL and SPIROPLASMAL DISEASES

Apricot chlorotic leaf roll

Phytoplasma

Little peach (= yellows)

Phytoplasma

Red Suture (= yellows)

Phytoplasma

Rosette

Phytoplasma

X-Disease

Phytoplasma

Yellow leaf roll

Phytoplasma

Yellows

Phytoplasma

MISCELLANEOUS DISEASES and DISORDERS

Peach tree short life

Complex of ring nematode, bacterial canker, Cytospora canker, and/or cold injury