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Diseases of Sunflower (Helianthus annuus L.)
and Jerusalem Artichoke (H. tuberosus L.)

R. M. Harveson, S. G. Markell, C. C. Block, and T. J. Gulya, primary collators (last update: 1/12/16)

BACTERIAL DISEASES

Apical chlorosis

Pseudomonas syringae pv. tagetis (Hellmers) Young et al.

Bacterial leaf spot

Pseudomonas cichorii (Swingle) Stapp

Pseudomonas syringae pv. helianthi (Kawamura) Dye et al.

Bacterial stalk rot and head rot

Pectobacterium atrosepticum (van Hall) Gardan et al.

Pectobacterium carotovorum subsp. carotovorum (Jones) Hauben et al.

Bacterial wilt

Ralstonia solanacearum (Smith) Yabuuchi et al.

Crown gall

Agrobacterium tumefaciens (Smith & Townsend) Conn

FUNGAL and OOMYCETE DISEASES

Alternaria head rot

Alternaria alternata (Fr.:Fr.) Keissl.

       (syn. A. tenuis Nees)

Alternaria helianthicola G. N. Rao & Rajagop.

Alternaria zinniae M. B. Ellis

Alternariaster helianthi (Hansf.) E. G. Simmons

Alternaria leaf blight and stem spot

Alternaria helianthicola G. N. Rao & Rajagop.

Alternaria helianthinficiens E. G. Simmons et al.

Alternaria leucanthemi Nelen

Alternaria protenta E. G. Simmons

Alternaria roseogrisea R. G. Roberts

Alternaria tenuissima (Kunze) Wiltshire

Alternaria zinniae M. B. Ellis

Alternariaster helianthi (Hansf.) E. G. Simmons

       (syn. Alternaria helianthii (Hansf.) Tubaki & Nishih.)

Botrytis head rot (Gray mold)

Botrytis cinerea Pers.:Fr.

       (syn. Botryotinia fuckeliana (de Bary) Whetzel)

Charcoal rot

Macrophomina phaseolina (Tassi) Goid.

       (syns. Rhizoctonia bataticola (Taubenh.) E. J. Butler; Sclerotium bataticola Taubenh.)

Downy mildew

Plasmopara halstedii (Farl.) Berl. & De Toni

Fusarium stalk rot

Fusarium acuminatum Ellis & Kellerm.

       (syn. Gibberella acuminata Wollenw.)

Fusarium equiseti (Corda) Sacc.

       (syn. Gibberella intricans Wollenw.)

Fusarium solani (Mart.) Sacc.

       (syn. Nectria haematococca Berk. & Broome)

Fusarium sporotrichioides Sherb.

Plectosphaerella tabacinum (Lindf.) W. Gams

       (syns. Fusarium tabacinum (J. F. H. Beyma) W. Gams; Microdochium tabacinum

       (J. F. H. Beyma) Arx; Monographella cucumerina (Lindf.) Arx)

Fusarium wilt

Fusarium oxysporum Schltdl.:Fr.

Fusarium verticillioides (Sacc.) Nirenberg

       (syn. F. moniliforme J. Sheld)

Leaf smut

Entyloma compositarum Farl.

Entyloma gaillardianum Vánky

Entyloma polysporum (Peck) Farl.

Myrothecium leaf and stem spot

Myrothecium roridum Tode:Fr.

Myrothecium verrucaria (Alb. & Schwein.) Ditmar:Fr.

Phialophora yellows

Phialophora asteris (Dowson) Burge & I. Isaac f. sp. helianthi Tirilly & C. Moreau

       (syn. Cephalosporium asteris Dowson)

Phoma black stem

Plenodomus lindquistii (Frezzi) Gruyter et al.

       (syns. Leptosphaeria lindquistii Frezzi; Phoma macdonaldii Boerema)

Phomopsis stem canker

Diaporthe goulterii R. G. Shivas et al.

Diaporthe gulyae R. G. Shivas et al.

Diaporthe helianthi Munt.-Cvetk. et al.

       (syn. Phomopsis helianthi Munt.-Cvetk. et al.)

Diaporthe kongii R. G. Shivas et al.

Diaporthe masirevicii R. G. Shivas et al.

Diaporthe miriciae R. G. Shivas et al.

Diaporthe novem J. M. Santos et al.

Diaporthe sackstonii R. G. Shivas et al.

Diaporthe serafiniae R. G. Shivas et al.

Diaporthe sojae Lehman

       (syn. D. kochmanii R. G. Shivas et al.)

Diaporthe weieri R. G. Shivas et al.

Phymatotrichopsis root rot (Cotton root rot)

Phymatotrichopsis omnivora (Shear) Hennebert

       (syn. Phymatotrichum omnivorum (Shear) Duggar)

Phytophthora stem/collar rot

Phytophthora cryptogea Pethybr. & Laff.

Phytophthora drechsleri Tucker

Powdery mildew

Golovinomyces cichoracearum (DC.) V. P. Heluta

       (syn. Erysiphe cichoracearum DC.)

Leveillula taurica (Lév.) G. Arnaud

Podosphaera xanthii (Castagne) U. Braun & Shishkoff

Pythium root and basal stem rot

Pythium aphanidermatum (Edson) Fitzp.

Pythium debaryanum R. Hesse

Pythium irregulare Buisman

Rhizoctonia root and basal stem rot

Rhizoctonia solani J. G. Kühn

       (syn. Thanatephorus cucumeris (A. B. Frank) Donk)

Rhizopus head rot

Rhizopus arrhizus A. Fisch.

       (syn. R. oryzae Went & Prins. Geerl.)

Rhizopus microsporus Tiegh.

Rhizopus stolonifer (Ehrenb.:Fr.) Vuill.

Rust

Coleosporium helianthi (Schwein.) Arthur

Puccinia canaliculata (Schwein.) Lagerh.

Puccinia enceliae Dietel & Holw.

Puccinia helianthi Schwein.

Puccinia massalis Arthur

Puccinia xanthii Schwein.

Uromyces junci (Desm.) Tul.

Uromyces silphii Arthur

Sclerotinia basal stalk rot and wilt, midstalk rot, head rot

Sclerotinia sclerotiorum (Lib.) de Bary

Sclerotinia stem rot

Sclerotinia minor Jagger

Sclerotium basal stalk and root rot (Southern blight)

Athelia rolfsii (C.C. Curzi) Tu & Kimbr.

       (syn. Sclerotium rolfsii Sacc.)

Septoria leaf spot

Septoria helianthi Ellis & Kellerm.

Septoria helianthicola Cooke & Harkn.

Septoria helianthina M. Petrov & Arsen.

Verticillium wilt

Verticillium dahliae Kleb.

White rust

Pustula helianthicola C. Rost & Thines

Pustula tragopogonis (Pers.) Thines

       (syns. Albugo tragopogonis (Pers.) Gray; Cystopus tragopogonis (Pers.) J. Schröt.)

NEMATODES, PARASITIC

Dagger, American

Xiphinema americanum Cobb

Root-lesion

Pratylenchus alleni Ferris

Pratylenchus brachyurus (Godfrey) Filipjev & Schuurmans Stekhoven

Pratylenchus crenatus Loof

Pratylenchus hexincisus Taylor & Jenkins

Pratylenchus penetrans (Cobb) Filipjev & Schuurmans Stekhoven

Pratylenchus scribneri Steiner in Sherbakoff & Stanley

Pratylenchus thornei Sher & Allen

Pratylenchus zeae Graham

Pratylenchus spp.

Pin

Paratylenchus projectus Jenkins

Reniform

Rotylenchulus reniformis Linford & Oliveira

Rotylenchulus spp.

Root-knot

Meloidogyne arenaria (Neal) Chitwood

Meloidogyne incognita (Kofoid & White) Chitwood

Meloidogyne javanica (Treub) Chitwood

Spiral

Helicotylenchus sp.

Stunt

Quinisulcius acutus (Allen) Siddiqi

Tylenchorhynchus nudus Allen

PARASITIC HIGHER PLANTS

Broomrape

Orobanche aegyptiaca Pers.

Orobanche cernua Loefl.

Orobanche cumana Wallr.

Orobanche ludoviciana Nutt.

Orobanche ramosa L.

Dodder

Cuscuta glomerata Choisy

Cuscuta indecora Choisy

Cuscuta pentagona Engelm.

PHYTOPLASMA DISEASES

Aster yellows

‘Candidatus Phytoplasma asteris’

Sunflower phyllody

Sunflower phyllody phytoplasma Candidatus

VIRUS DISEASES

Cucumber mosaic

Cucumber mosaic virus

Pelargonium zonate spot

Pelargonium zonate spot virus

Sunflower chlorotic mottle

Sunflower chlorotic mottle virus

Sunflower mild mosaic

Sunflower mild mosaic virus

Sunflower mosaic

Sunflower mosaic virus

Sunflower necrosis

Tobacco streak virus

Sunflower ringspot

Sunflower ringspot virus

Tobacco ringspot

Tobacco ringspot virus