Brassica oleracea vars.
broccoli, brussel sprouts, cabbage, cauliflower
22 Related Pests
Rhodococcus fascians
bacterium
Corynebacterium fascians, Bacterium fascians, Phytomonas fascians, Pseudobacterium fascians, Rhodococcus rubropertinctus
Europe, North America, Central America, Australia, New Zealand, Iran, Russia, Egypt, Colombia
Widespread
Brazil, Thailand
2023-08-21
Though found in many US states, the pathogen is usually restricted and localized. Probably Worldwide, though not reported. Disease outbreaks are sporadic and usually related to poor sanitation. Bulbs, floral and greenhouse crops most susceptible to disease outbreaks. No reports of seed as a pathway in vegetables and agronomic crops.
Primarily a pest of ornamentals, woody ornamentals and floowers. Vegetables and agronomic crops reported susceptible to the bacterium are listed below. Transmits primarily through propagation.
No
CORBFA-3, CORBFA-2
Only broccoli listed as a potential host. Cabbage and cauliflower may not be hosts. No references found indicating seed is a pathway.
CORBFA-3, CORBFA-2
Dickeya chrysanthemi
bacterium
Dickeya chrysanthemi bv. chrysanthemi
Dickeya chrysanthemi bv. parthenii
Dickeya chrysanthemi pv. chrysanthemi
Dickeya chrysanthemi pv. parthenii
Erwinia carotovora f.sp. parthenii
Erwinia carotovora var. chrysanthemi
Erwinia chrysanthemi
Erwinia chrysanthemi pv. chrysanthemi
Erwinia chrysanthemi pv. parthenii (
Pectobacterium carotovorum f.sp. chrysanthemi
Pectobacterium carotovorum var. chrysanthemi
Pectobacterium chrysanthemi
Pectobacterium chrysanthemi pv. chrysanthemi
Pectobacterium chrysanthemi pv. parthenii
Pectobacterium parthenii
Pectobacterium parthenii var. chrysanthemi
Pectobacterium parthenii-dianthicola
Worldwide
AR, CA, CO, CT, FL, GA, IL, MA, MN, NE, NY, NC, ND, OH, PA, SD, TX, VA, WI
Mexico, China
2025-09-12
Dickeya chrysanthemi strains have been isolated from a number of different hosts in different countries. The list of all susceptible plants after inoculation by Dickeya chrysanthemi would be far longer than the natural host range, and difficult to establish. There is little if any information on seed as a pathway for this pathogen and therefore should not be regulated.
Eriwina chrysanthemi has been reclassified into Pectobacterium spp. and Dickeya spp.
Primarily ornamentals and flowers. Main: Araceae, Asteraceae familes
Not a host
ERIWCH-3, CABI CPC
Some sources list Brassicas as hosts; however, there’s no evidence that Brassica oleracea specifically is a host of D. chrysanthemi.
ERIWCH-3, CABI CPC
Ma, B., Hibbing, M. E., Kim, H.-S., Reedy, R. M., Yedidia, I., Breuer, J.,Breuer, J., Glasner, J. D., Perna, N. T., Kelman, A., and Charkowski, A.O. 2007. Host range and molecular phylogenies of the soft rot enterobacterialgenera Pectobacterium and Dickeya. Phytopathology 97:1150-1163
Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
Candidatus phytoplasma asteris
phytoplasma
Aconitum proliferation, Aconitum virescence, Alberta aster yellows, alfalfa stunt, Alstroemeria decline, American aster yellows, Anemone virescence, apple sessile leaf, apricot chlorotic leaf roll, azalea little leaf, banana elephantiasis, basil little leaf, Bermuda grass white leaf, black currant reversion, black pepper yellows, blueberry stunt, broccoli phyllody, Bunias phyllody, cactus virescence, cactus witches'-broom, Calendula virescence, canola yellows, Cardaria phyllody, carrot proliferation, carrot yellows, cassava phyllody phytoplasma, cassava witches' broom, Catharanthus little leaf, Catharanthus virescence, chayote witches'-broom, cherry bunch leaf, cherry little leaf, chlorantie, Chrysanthemum witches'-broom, Chrysanthemum yellows, Cirsium stunt, Cirsium yellows, clover phyllody, columbine virescence, coorg black pepper yellows, cosmos phyllody, Cyclamen virescence, dandelion yellows, Delphinium virescence, dill yellows, Diplotaxis virescence, dogfennel yellows, dogwood stunt, dwarf western aster yellows, eastern aster yellows, Echinacea phyllody, eggplant dwarf, eggplant little leaf, Epilobium phyllody, Erigeron yellows, European aster yellows, false ragweed, Festuca yellows, Gaillardia yellows, Gladiolus virescence, grapevine yellows, grey dogwood stunt, hyacinth yellows, Hydrangea phyllody and virescence, Ipomoea obscura witches' broom, Italian cabbage yellows, Italian lettuce yellows, kale phyllody, larkspur virescence, lazy daisy yellows, lettuce yellows, lilac little leaf, Limonium proliferation, Limonium yellows, Lotus yellows, maize bushy stunt, mallow yellows, marguerite yellows, marigold phyllody, marigold virescence, Maryland aster yellows, Mitsuba witches' broom, monarda yellows, mulberry dwarf, multiplier disease, New England aster yellows, New Jersey aster yellows, oat proliferation, Oenothera virescence, olive witches'-broom, onion phyllody, onion virescence, onion yellows, Papaver virescence, parsley yellows, Paulownia witches' broom, peach red leaf disease, pear proliferation and decline, periwinkle little leaf, periwinkle witches' broom and virescence, periwinkle yellows, Phytoplasma asteris, plantain virescence, Poa stunt, poplar witches' broom, poplar yellows, Portulaca yellows, potato purple top, prickly lettuce yellows, Primula yellows, pumpkin yellows, purple coneflower yellows, Quercus proliferation, ragweed yellows, Ranunculus phyllody, rape phyllody, rape virescence, rose witches'-broom, ryegrass yellows, safflower phyllody, Salix proliferation, sandal spike, Saponaria proliferation, Schizanthus proliferation, severe western aster yellows, soybean purple stem, Spirea stunt, Stellaria yellows, strawberry green petal, strawberry phylloid fruit, strawberry stunting, Symphytum proliferation, Tacaco witches'-broom, Tagetes witches' broom, Thalictrum proliferation, tomato big bud, tomato yellows, turnip virescence, Veronica phyllody, watercress witches'-broom, western aster yellows, wild radish yellows
Worldwide
Widespread
-
2024-11-09
Candidatus Phytoplasma asteris is naturally transmitted by a wide range of leafhopper, Macrosteles fascifrons is reported to be the principal vector. Seed is not a pathway.
Wide host range, primarily herbaceous dicots, though strains infect monocots and woody ornamentals
No
CABICPC, ISFRPLD
Seed is not a known pathway.
CABICPC, ISFRPLD
Pseudomonas syringae pv. maculicola
bacterium
Bacterium maccullochianum, Bacterium maculicola, Bacterium maculicola var. japonicum, Phytomonas maculicola, Pseudomonas maculicola
Africa: Algeria, Mauritius, Mozambique, South Africa, Zimbabwe; Asia: China, Georgia, Japan, North Korea, South Korea, Taiwan, Turkey; Europe: Bulgaria, Denmark, Finland, Germany, Italy, Netherlands, Norway, Russia, Ukraine, UK; North America: Bermuda, Canada, Cuba, El Salvador, Puerto Rico, USA; Oceania: Australia, Fiji, New Zealand; South America: Argentina, Brazil.
CA
China
2024-12-21
There is no evidence that seed is a pathway for this pathogen.
Brassicaceae family
Uncertain
PSDMMC-2, PSDMMC-3, PSDMMC-4, CABI CPC, PSDMMC-5, PSDMMC-6
Though often inferred as a pathway, no references CABI states there is no evidence that seed is a pathway.
PSDMMC-2, PSDMMC-3, PSDMMC-4, CABI CPC, PSDMMC-5, PSDMMC-6
Seed wash
No references found describing a seed test for Pseudomonas syringae pv maculicola on Brassica oleracea. A seed test method using dilution plating is commercially available.
Cultural
PSDMMC-4
Crop residue management, elimination of volunteer plants and weeds, use disease free seed, establish a crop rotation program.
Bradbury. 1986. Guide to plant pathogenic bacteria. CAB International Farnham Royal, Slough UK
International Seed Federation Regulated Pest List Database. pestlist.worldseed.org Nyon Switzerland
Zhao, Y. F., Damicone, J. P., and Bender, C. L. 2002. Detection, survival, and sources of inoculum for bacterial diseases of leafy crucifers in Oklahoma. Plant Dis. 86:883-888.
Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
Cother, E. J., & Noble, D. H. (2009). Identification of blossom blight in stock ( Matthiola incana ) caused by Pseudomonas syringae pv. maculicola. Australasian Plant Pathology, 38(3), 242–246.
Zhao, Y., Damicone, J. P., Demezas, D. H., Rangaswamy, V., & Bender, C. L. (2000). Bacterial leaf spot of leafy crucifers in Oklahoma caused by Pseudomonas syringae pv. maculicola. Plant Disease, 84(9), 1015-1020.
Alternaria brassicola
fungus
Alternaria brassicae f. microspore, Alternaria brassicae var. minor, Alternaria circinans, Alternaria oleracea, Helminthosporium brassicae, Helminthosporium brassicicola, Macrosporium cheiranthi var. circinans, Macrosporium circinans, Macrosporium commune var. circinans, Polydesmus exitiosus f. alternarioides, Polydesmus exitiosus f. luxuriosum, Sporidesmium exitiosum f. alternarioides, Sporidesmium exitiosum f. luxuriosum, Sporidesmium septorioides
Worldwide
Widespread
Mexico
2024-11-09
Alternaria brassicicola is distributed around the world, especially on oleiferous brassicas. It is dispersed widely through seed and by the wind during crop harvest. (CABI)
Many crucifers. Main: brassica sp., melon, cucumber, common bean, radish, tomato, faba bean; Other: lettuce, kohlrabi
Yes
ALTEBI-2, ALTEBI-3, CABICPC, ISFRPLD
Seed as a pathway is well documented and accepted
Blotter or culture plating (ISTA)
ALTEBI-2, ALTEBI-3, CABICPC, ISFRPLD
Blotter, Seed wash, Culture plating, Agar plating, PCR
ALTEBI-4, ALTEBI-5, ISTA
ISTA describes both blotter and culture plating as standard methods
Chemical, Cultural
ISFRPLD
IPM programs, including crop rotation and sanitation. Seed treatments and disinfections are effective.
Humpherson-Jones FM, Maude RB, 1982. Studies on the epidemiology of Alternaria brassicicola in Brassica oleracea seed production crops. Annals of Applied Biology, 100:61-71
Humpherson-Jones FM, Hocart MJ, Ainsworth LF, 1983. Alternaria disease of brassica seed crops. 33rd Annual Report for 1982, National Vegetable Research Station Wellesbourne, Warwick UK, 63-64
Bassey and Gabrielson, 1983. Factors affecting accuracy of 2,4-D assays of crucifer seed for Alternaria brassicicola and relation of assays to seedling disease potential. Seed Sci. and Technol. 11:411-420
Wu WS, Chen TW, 1999. Development of a new semiselective medium for detecting Alternaria brassicicola in cruciferous weeds. Seed Science and Technology, 27:397-409
International Rules for Seed Testing. International Seed Testing Association; www.seedtest.org
Verticillium nigrescens
fungus
Gibellulopsis nigrescens
Asia: China, Japan; North America: USA
GA
Brazil
2025-09-05
Verticillium nigrescens (now often called Gibellulopsis nigrescens) is a mostly saprophytic soil-borne fungus and a weak or opportunistic plant pathogen. It survives in soil and plant debris mainly as chlamydospores and can infect roots when germination is triggered by root exudates. Transmission occurs through soil and possibly contaminated plant material, but there is no confirmed evidence of seed transmission.
Soybean and cotton are main hosts, but even on these hosts it is a weak pathogen.
No
VERTNI-2, CABI CPC, RICH ISTA, VERTNI-6
No references found indicating seed is a pathway. Reported as a weak pathogen on this host.
VERTNI-2, CABI CPC, RICH ISTA, VERTNI-6
Farr, D.F. and Rossman, A.Y. Fungal Databases, Systematic Mycology and Microbiology Laboratory, ARS, USDA. 2016, http://nt.ars-grin.gov/fungaldatabases/
Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
Richardson, MJ. 1990. An Annotated List of Seedborne Diseases. International Seed Testing Association, Zurich Switzerland.
Vesper, S. J., Turner, J. T., & Phillips, D. V. (1983). Incidence of Verticillium nigrescens in soybeans. Phytopathology, 73(9), 1338-1340.
Leptosphaeria maculans
fungus
Phoma brassicae, Phoma lingam, Phoma
oleracea, Phoma napobrassicae, Phyllosticta brassicae, Phyllosticta napi Sacc., Plenodomus lingam,
Pleospora maculans, Sphaeria lingam, Sphaeria
maculans
Worldwide
Widespread
China, Korea
2022-03-22
Seed transmission of this pathogen is well established and accepted by the seed industry. This pathogen has been reported in China and Korea (ARS GRIN)
Restricted to Brassicaceae
Yes
LEPYMA-2, ISFRPLD
Seed transmission of this pathogen is well established and accepted by the seed industry
Blotter paper is the standard method of the NSHS
LEPYMA-2, ISFRPLD
Blotter paper
LEPYMA-4, LEPYMA-5
This test has been validated by the ISTA and the NSHS
Yes, The most effective product now is Coronet by BSAF. Mertect and Iprodione
ISFRPLD
The most effective products on the market are Coronet. Mertect and Iprodione. (Seed treatment information from manufacture labels and seed industry practices.)
Jacobsen BJ, Williams PH, 1971. Histology and control of Brassica oleracea seed infection by Phoma lingam. Plant Disease Rprt 55:934-938.
Seed Health Testing Method for Phoma lingum Br 2.1 National Seed Health System. http://www.seedhealth.org
Detection of Leptosphaeria maculans in Brassica sp. Seed. 2016 International Seed Testing Association. Seed Health Test Methods 2016. www.seedtest.org
Verticillium albo-atrum
fungus
Verticillium albo-atrum var. caespitosum
Verticillium albo-atrum var. tuberosum
Worldwide, primarily in cool temperate climates and in potato producing areas
Widespread, especially in northern states
China, Thailand
2025-09-15
Verticillium albo-atrum is a soilborne fungal pathogen that causes Verticillium wilt in a wide range of host plants, including vegetables, ornamentals, and woody crops. The fungus invades the plant through the roots, colonizes the vascular system, and disrupts water transport. It survives in soil for many years as microsclerotia, making management difficult. The pathogen is primarily spread through infested soil, plant debris, and infected planting material, but seed transmission has been reported (and unverified) in older reports for some crops.
Main: cauliflower. broccoli, lucerne, tomato, potato; Other: brussel sprouts, cucumber
Not a host
VERTAA-2, VERTAA-9, CABI CPC, VERTAA-14, VERTAA-15
No references found indicating Brassica spp. as a host for this pathogen.
VERTAA-2, VERTAA-9, CABI CPC, VERTAA-14, VERTAA-15
Anonymous 1960. Index of Plant Diseases in the United States. U.S.D.A. Agric. Handb. 165: 1-531. (94)
Richardson, MJ. 1990. Annotated List of Seedborne Diseases, Fourth Ed. International Seed Testing Association. Zurich, Switzerland
Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
Rimmer, S.R., Shattuck, V.I. and Buchwaldt, L. (eds) (2007). Compendium of brassica diseases. APS Press. 117pp.
Koike, S.T., Subbarao, K.V., Davis, R.M., Gordon, T.R. and Hubbard, J.C. (1994). Verticillium wilt of cauliflower in California. Plant Disease 78: 1116-1121.
Phytophthora erythroseptica var. erythroseptica
fungus
Phytophthora himalayensis, Phytophthora erythroseptica
Worldwide, especially where potatoes are grown
Widespread in potato growing regions
China
2023-08-21
This pathogen has not been repoted in China. True seed is not known to be a pathway.
This is an important pathogen of potato. Affects a few other important crops, but not known to be a serious pathogen of other crops. Most crops not known to be a host in nature.
No
PHYTER-1
Not a host. Brassica oleracea var., as a host group has only been established under artificial inoculation, infection in nature not reported. True seed is not known to be a pathway.
PHYTER-1
Phytophthora erythroseptica var. erythroseptica In: Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
Tobacco mosaic virus
virus
TMV U1, type, Vulgare or Common strain
tobacco mosaic tobamovirus,
VMT (Virus mosaique de tabac)
Worldwide
Widespread
Mexico
2023-08-21
Broad host range. Cultivated species listed below.
No
Occasionally listed as hosts, no evidence that seed is a pathway.
Pleospora herbarum
fungus
Too many to list, most commonly used names include Alternaria putrefaciens, Clasterosporium putrefaciens, Sporidesmium putrefaciens, Stemphyllium botryosum, Stemphylium herbarum.
Worldwide
Widespread
2023-08-21
Primarily a post harvest pathogen
Wide host range
No
No references found indicating seed is a pathway
Arabis mosaic virus
virus
Arabis mosaic nepovirus, Ash ring and line pattern virus, forsythia yellow net virus, hop nettlehead virus, jasmine yellow blotch virus, raspberry yellow dwarf virus, Rhabarber mosaik virus (rhubarb mosaic virus), rhubarb mosaic virus
Africa: Egypt, South Africa; Asia: India, Iran, Japan, Kazakhstan, Lebanon, Syria, Turkey; Europe: Austria, Belarus, Belgium, Bulgaria, Croatia, Czechia, Denmark, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Moldova, Netherlands, Norway, Poland, Romania, Russia, Serbia, Slovenia, Spain, Sweden, Switzerland, Ukraine, UK; North America: Canada, Mexico, USA; Oceania: Australia, New Zealand; South America: Chile, Peru
CT, FL, MI, MN, MO, NE, NY, OH, SC
Mexico, China, Korea, Brazil, Thailand
2025-09-11
Arabis mosaic virus is a virus in the genus Nepovirus that infects a wide range of crops. It is transmitted mainly by the nematode Xiphinema diversicaudatum in soil and through infected planting material, with mechanical transmission possible. A heavily cited report from 1967 suggests seed transmission in some species, but no further evidence has been found since.
Wide host range including many vegetable, agronomic and fruit species. Main: celery, asparagus, sugarbeet, cucumber, carrot, lettuce, clover.
No
ARMV00-5, CABI CPC, DPV WEB, ARMV00-10
Arabis mosaic virus is not commonly reported as a natural pathogen of Brassica oleracea. While the species has been shown to be susceptible under experimental inoculation, there are no records of natural field infections.
ARMV00-5, CABI CPC, DPV WEB, ARMV00-10
Lister and Murant. 1967. Seed-transmission of nematode-borne viruses. Annals of Applied Biology, 59:49-62.
Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
Description of Plant Viruses ; http://dpvweb.net/dpv/
Baker, R., Bragard, C., Candresse, T., Gilioli, G., Grégoire, J. C., Holb, I., ... & van der Werf, W. (2013). Scientific opinion on the risk to plant health posed by Arabis mosaic virus, Raspberry ringspot virus, Strawberry latent ringspot virus and Tomato black ring virus to the EU territory with the identification and evaluation of risk reduction options. EFSA JOURNAL, 11(10), 1-83.
Mycosphaerella brassicicola
fungus
Asteroma brassicae, Asteromella brassicae, Cercospora albomaculans, Dothidea brassicae, Phyllosticta brassicicola, Phyllosticta napi, Pseudocercosporella anguioides, Sphaerella brassicicola, Sphaeria brassicicola., Depazea brassicicola
Africa: Ethiopia, Ghana, Kenya, Mrocco, Rwanda, South Africa, Tunisia, Uganda; Asia: Cambodia, China, India, Israel, Malaysia, Philippines, Sri Lanka, Turkey, Vietnam; Europeícenles: Belgium, Bulgaria, Denmark, Finland, France, Germany, Guernsey, Iceland, Ireland, Italy, Maltam Netherlands, Poland, Portugal, Sweden, UK; North America, Canada, Haiti, Jamaica, Mexico, Panama, Puerto Rico, Saint Lucia, Trinidad and Tobago, USA; Oceania: Australia, New Zealand, Norfolk Island; South America: Argentina, Brazil, Chile, Colombia, Ecuador, Guyana, Suriname, Uruguay, Venezuela.
AL, CA, HI, IL, OR, NY, TX, WA
Mexico
2025-09-28
Mycosphaerella brassicicola is an ascomycete fungus that causes ringspot disease on Brassica crops, forming concentric leaf lesions that can lead to defoliation and reduced plant vigor. It survives between seasons on infected crop debris. The pathogen spreads primarily via airborne, wind-dispersed ascospores that infect leaves through stomata under cool, moist conditions, with local spread also possible via water splash. Some sources note seed infection but no references were listed and no reports were found that discuss seed transmission of this bacteria.
Main: Brassicaceae family
No
MYCOBR-2, MYCOBR-3, MYCOBR-4, MYCOBR-6, MYCOBR-7, MYCOBR-8, MYCOBR-9, MYCOBR-10, MYCOBR-11, MYCOBR-12
No references found indicating seed as a pathway. Crop debris is the most common source of inoculum. Plant debris associated with the seed may carry fungal spores.
MYCOBR-2, MYCOBR-3, MYCOBR-4, MYCOBR-6, MYCOBR-7, MYCOBR-8, MYCOBR-9, MYCOBR-10, MYCOBR-11, MYCOBR-12
biological, chemical, cultural
MYCOBR-5
Control relies on clean seedbeds, proper fertilisation, and hot water treatment. Chemical sprays and resistant cultivars can also help reduce disease.
Crous, P.W., Phillips, A.J.L., and Baxter, A.P. 2000. Phytopathogenic Fungi from South Africa. Department of Plant Pathology, University of Stellenbosc 358 pages.
Wakeham, A. J., and Kennedy, R. 2010. Risk Assessment Methods for the Ringspot Pathogen Mycosphaerellabrassicicolain Vegetable Brassica Crops, Plant Disease 94: 851-859
Dring, D.M. 1961. Studies on Mycosphaerella brassicicola (Duby) Oudem. Trans. Brit. Mycol. Soc. 44: 253-264.
Cullington, J. E. 1995. Studies into the biology and epidemiology of Mycosphaerella brassicicola, the ringspot pathogen of brassicas. Ph.D. thesis. University of Birmingham, Birmingham,UK.
Götz, M., Zornbach, W., & Boyle, C. (1993). Life cycle of Mycosphaerella brassicicola (Duby) Lindau and ascospore production in vitro. Journal of Phytopathology, 139(4), 298-308.
Kennedy, Wakeham, & Cullington. (1999). Production and immunodetection of ascospores of Mycosphaerella brassicicola: ringspot of vegetable crucifers. Plant Pathology, 48(3), 297-307.
Jackson, G. (2020). Cabbage ring spot (Mycosphaerella brassicicola) [Fact sheet]. Pacific Pests, Pathogens & Weeds.
Köhl, J., Vlaswinkel, M., Groenenboom‐de Haas, B. H., Kastelein, P., van Hoof, R. A., van der Wolf, J. M., & Krijger, M. (2011). Survival of pathogens of Brussels sprouts (Brassica oleracea Gemmifera Group) in crop residues. Plant Pathology, 60(4), 661–670.
Kennedy, R. (2004, May 24). Brassicas: Development of a rapid field based immunomonitoring assay and its use in controlling disease establishment in transplanted crops (Project No. FV 233). Annual project report.
Dixon, G. R. (1981). Pathogens of crucifer crops. In Vegetable crop diseases (pp. 112-156). London: Palgrave Macmillan UK.
Kurose, D., Evans, H.C., Djeddour, D.H., Cannon, P.F., Furuya, N., and Tsuchiya, K. 2009. Systematics of Mycosphaerella species associated with the invasive weed Fallopia japonica, including the potential biological control agent M. polygoni-cuspidati. Mycoscience 50: 179-189.
Beet western yellows virus
virus
Brassica virus 5, Malva yellows virus, Radish yellows virus, Turnip mild yellows virus, Turnip yellows virus luteovirus
Africa: Eritrea, Ethiopia, Tunisia; Asia: China, Iran, Iraq, Israel, Japan, Lebanon, Pakistan, South Korea, Syria, Thailand, Turkey, Yemen; Europe: Czechia, France, Germany, Greece, Italy, Spain, UK; North America: USA; Oceania: Australia, New Zealand.
CA, IL, OR, WA
Korea
2024-08-21
Transmission is by aphid vectors, particularly the green peach aphid.
Main: Brassica spp., radish, spinach. Other: sugarbeet, chickpea, pepper.
No
BWYV00-3, CABICPC, ISFRPLD, DPVWEB
Seed is not known to be a pathway.
BWYV00-3, CABICPC, ISFRPLD, DPVWEB
Tobacco rattle virus
virus
Aster ringspot virus, belladonna mosaic virus, paeony mosaic virus, paeony ringspot virus, peony mosaic virus, peony ringspot virus, potato corky ringspot virus, potato stem mottle virus, ratel virus, spinach yellow mottle virus, Tabakmauche Virus, Tabakstreifen und Kra, tobacco rattle tobravirus, tulip white streak virus
Worldwide
AK, CA, CO, FL, ID, IL, IN, MA, MI, MN, NE, NC, ND, OH, OR, PA, UT, WA, WI
Korea
2024-09-08
Tobacco Rattle Virus is soil-borne and transmitted between plants by the nematode species Trichodorus and Paratrichodorus. Seed is only known to be a pathway in some weed species.
TRV occurs on numerous crops in many countries and has been detected on over 100 mono- and dicotyledonous plant species.
No
CABICPC, ISFRPLD, RICHISTA
Brassica oleracea vars. are known to be hosts for Tobacco rattle virus, though it rarely causes disease problems. No references found indicating seed is a pathways.
CABICPC, ISFRPLD, RICHISTA
Pseudomonas syringae pv. syringae
bacterium
Many
Worldwide
Widespread
Thailand, China, Korea
2022-12-01
Seed is known to be a pathway on several crops. Thailand lists this pathogen as prohibited on corn. China lists this pathogen (Pseudomonas oryzicola) as prohibited on rice.
Wide host range. Important vegetable and agronomic crops listed below.
No
PSDMSY-2
No references found indicating that Brassica oleracea are hosts for this pathogen.
PSDMSY-2
International Seed Federation Regulated Pest List Database. pestlist.worldseed.org Nyon, Switzerland
Pythium vexans
fungus
Pythium complectens, Phytopythium vexans, Pythium allantocladon, Pythium ascophallon, Pythium piperinum, Ovatisporangium vexans, Pythium euthyphyphon, Pythium polycladon
Africa, Asia, Europe, Guatemala, Caribbean, Fiji, Papua New Guinea, Samoa, Solomon Islands, Argentina, Brazil, Venezuela, Chile, South Korea, New Zealand, Canada
HI, OK, CA, NC, MD, VA, DE, PA, NJ, WA, TN, LA, WI, IA
Korea
2023-08-21
Primarily affecting seedlings and roots and is transmitted mainly through infested soil. Seed is not known to be a pathway for any host. Zoospores of this fungus can swim in open water for a short distance. This pathogen has been reported in S. Korea. Korea lists this pathogen as Phytopythium vexans
Wide host range
No
PYTHVE-1, PYTHVE-3
Seed is not known to be a pathway for any host.
PYTHVE-1, PYTHVE-3
Gibberella avenacea
fungus
Fusarium avenaceum, Fusarium avenaceum f.sp. fabae, Fusarium avenaceum subsp. aywerte, Fusarium roseum var. avenaceum
Worldwide, primarily in temperate regions.
Widespread
Thailand
2022-11-22
One of many Fusaria, Gibberella's that may contaminate kernels.
Primarily a grain and clover pathogen with a wide host range.
No
GIBBAV-2, GIBBAV-4, GIBBAV-6
Several references list seed as a pathway for this pathogen. No references with supporting data were found.
GIBBAV-2, GIBBAV-4, GIBBAV-6
International Seed Federation Regulated Pest List Database. www.pestlist.worldseed.org. Nyon, switzerland
Richardson MJ, 1990. An Annotated List of Seed-borne Disease. International Seed Testing Association, Zurich, Switzerland
Neergaard P., 1977. Seed Pathology. vol. I and II. The McMillian Press, London, UK
Nacobbus aberrans
nematode
Anguillulina aberrans, Nacobbus batatiformis, Nacobbus bolivianus, Nacobbus serendipiticus, Nacobbus serendipiticus bolivianus, Pratylenchus aberrans
Egypt, Argentina, Bolivia, Chile, Ecuador, Peru, Mexico
AR, CO, KS, MT, NE, SD, UT, WY
Korea
2023-08-21
Seed is not known to be a pathway for this nematode in any host.
potato, vegetables
No
NACOBA-1, NACOBA-2
Seed is not known to be a pathway for this nematode in any host.
NACOBA-1, NACOBA-2
Xiphinema diversicaudatum
nematode
Dorylaimus diversicaudatus, Dorylaimus elongatus apud, Longidorus diversicaudatus, Xiphinema diversicaudatum, Xiphinema amarantum, Xiphinema basiri apud, Xiphinema israeliae apud, Xiphinema paraelongatum, Xiphinema sahelense apud, Xiphinema seredouense
Africa: Morocco, South Africa; Asia: India, Turkey; Europe: Austria, Belgium, Croatia, Czechia, Denmark, France, Germany, Ireland, Italy, Moldova, Netherlands, Norway, Poland, Portugal, Russia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Urkaine, UK; North America: USA. Oceania: New Zealand.
CA
Korea
2024-09-09
Found primarily in pasture and woodland areas. May spread nepoviruses. Seed is not known to be a pathway for dagger nematodes.
Wide host range
No
XIPHDI-1, CABICPC, ISFRPLD
Seed is not known to be a pathway.
XIPHDI-1, CABICPC, ISFRPLD
Cladosporium cladosporioides
fungus
Cladosporium graminum, Cladosporium herbarum, Mycosphaerella schoenoprasi, Mycosphaerella tulasnei, Mycosphaerella tassiana, Penicillium cladosporioides, Hormodendrum cladosporioides, Monilia humicola
Africa: Egypt, South Africa; Asia: Bangladesh, China, India, Iran, Israel, Oman, Saudi Arabia, South Korea, Syria; Europe: France, Hungary, Italy; North America: USA; South America: Argentina, Brazil
IA, OR
Korea
2025-10-07
This pathogen is considered primarily a post harvest pathogen that does not cause disease in most of it's hosts (CLADCL-1). C. cladosporioides spreads primarily by wind, rain splash, or contaminated surfaces. It can also persist on plant debris, some seeds, and stored produce, serving as inoculum for new infections. The fungus thrives in cool, moist environments and is especially common in greenhouses, storage areas, and outdoor crops during humid seasons.
Wide host range
No
CABI CPC
No references found indicating Brassica seed is a pathway.
CABI CPC
Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
Alternaria japonica
fungus
Alternaria raphani, Alternaria brassicae var. macrospora, Alternaria matthiolae
Africa: Egypt, Kenya, South Africa, Tunisia, Zimbabwe; Asia: Bangladesh, Bhutan, China, India, Iran, Iraq, Israel, Japan, Myanmar, Pakistan, Saudia Arabia, South Korea, Taiwan, Thailand; Europe: Austria, Czechia, Denmark, Finland, France, Germany, Greece, Hungary, Italy, Netherlands, Russia, United Kingdom; North America: Canada, Cuba, United States; Oceania: Australia, French Polynesia, New Caldonia, New Zealand, Papua New Guinea; South America: Brazil.
AZ, CA, FL, MA, MI, MN, MS, NJ, OH, PA, SC.
Korea
2024-08-20
Alternaria japonica causes black spot disease in cruciferous plants and is well established worldwide. It has a broad host range within the Brassicaceae family and can be difficult to eradicate as it can survive in the soil for years.
Main: brassicas, radish. Other: tomato
Yes
ALTERP-2, ALTERP-5, ALTERP-7, CABICPC, ISFRPLD, ALTERP-9
Seed as a pathway is established and accepted.
ALTERP-2, ALTERP-5, ALTERP-7, CABICPC, ISFRPLD, ALTERP-9
Blotter incubation, culture plating
CABICPC, ISFRPLD
CABI describes the blotter and incubation methods for this pathogen. Commercial testing is available, although these methods have not been standardized or validated. One reference indicates a DNA-based test; however, this method has also not been validated.
Chemical, Cultural
ALTERP-5, CABICPC
Plant disease-free seed. Crop rotation can help where the fungus is persistent in soils. Eradicate volunteer hosts. Chemical, Physical, and biological seed treatments have been reported to be effective in controlling seed inoculum.
Farr, D.F., and Rossman, A.Y. Fungal Databases, Systematic Mycology and Microbiology Laboratory, ARS, USDA. 2020, http://nt.ars-grin.gov/fungaldatabases/
Saharan GS, Mehta N and Meena PD. 2016. Alternaria Diseases of Crucifers: Biology, Ecology and Disease Management. Springer Science+Business Media Singapore Pte Ltd. is part of Springer Science+Business Media (www.springer.com)
Holtzhausen MA and Knox-Davies PS, 1974. Pathogens of cruciferous vegetable crops in commercial seed samples in South Africa. Phytophylactica, 6:289-294
Rop, N. K., Kiprop, E. K., & Ochuodho, J. O. (2009). Alternaria species causing black spot disease of Brassicas in Kenya
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