Verticillium albo-atrum
verticillium wilt
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
2022-11-11 17:40:00
fungus
China, Thailand
Wide host range. An important pathogen of potatoes.
VERTAA
Many reports of Verticillium albo-atrum in crops reported prior to 1970 may have actually been Verticillium dahlia. Only lucerne, potatoes, tomatoes and hops are considered important hosts. This pathogen has been reported in China
14 Known Hosts
Medicago sativa
alfalfa
Yes
VERTAA-5,VERTAA-6
Seed is known to be a pathway, though contamination is primarily external.
Yes
Culture plating, Microscopic exam
VERTAA-5,VERTAA-6,VERTAA-7
Thiram has been used in Canada, but no data on success found. Â Storage of seed for 1 yr. may eliminate pathogen from the seed.
Resistant varieites are known
VERTAA-6,VERTAA-8
Christen AA, 1983. Incidence of external seedborne Verticillium albo-atrum in commercial seed lots of alfalfa. Plant Disease, 67:17-18
Sheppard JW, Needham SN, 1980. Verticillium wilt of alfalfa in Canada: occurrence of seed-borne inoculum. Canadian Journal of Plant Pathology, 2:159-162
Christen AA, 1982. Demonstration of Verticillium albo-atrum within alfalfa seed. Phytopathology, 72:412-414
Huang HC, Kozub GC, Kokko EG, 1994. Survival of Verticillium albo-atrum in alfalfa seeds. Canadian Journal of Botany, 72:1121-1125
Solanum lycopersicum
tomato
No
VERTAA-1,VERTAA-2,VERTAA-9,ISF RPLD
Verticillium albo atrum can cause verticillium wilt in tomatoes, but no evidence that seed is a pathway for this pathogen was found. A 1934 reference to seed as a possible pathway was found, but more recent references have not found an association of the pathogen with seed.
Verticillium albo-atrum In: Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
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
International Seed Federation Regulated Pest List Database. pestlist.worldseed.org Nyon Switzerland
Brassica oleracea vars.
cabbage, cauliflower, brussel sprouts, broccoli
No
VERTAA-2,VERTAA-9,ISF RPLD
Not a host. No literature found indicating that this fungus attacks Brassica crops.
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
International Seed Federation Regulated Pest List Database. pestlist.worldseed.org Nyon Switzerland
Capsicum annuum
pepper
No
VERTAA-2,VERTAA-9
Only one reference found indicating pepper is attacked by this fungus. No evidence that seed is a pathway for this crop. Verticillium dahlia is the primary pathogen for verticillium wilt in pepper.
Cucumis sativus
cucumber
No
VERTAA-2,VERTAA-3,VERTAA-4,ISF RPLD
No evidence that seed is a pathway for this crop. Verticillium dahlia is the primary pathogen for verticillium wilt in cucurbits.
Anonymous 1960. Index of Plant Diseases in the United States. U.S.D.A. Agric. Handb. 165: 1-531. (94)
Gubler, WD. 1996. Verticillium Wilt. In, Compendium of Cucurbit Diseases. Eds. Zitter, TA, Hopkins, DL and Thomas, CE. APS Press, Minniapolis, MN.
Gubler WD, Grogan RG, and Greathead AS, 1978. Wilt of cucumber caused by Verticillium albo-atrum in California. Plant Disease Reporter, 62:786-788
International Seed Federation Regulated Pest List Database. pestlist.worldseed.org Nyon Switzerland
Allium cepa
onion
No
VERTAA-2,VERTAA-9,ISF RPLD
Several references indicate that onion may be attacked by this fungus, but most references cannot be confirmed or no data was presented. Nonetheless, there is no evidence indicating that seed is a pathway.
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
International Seed Federation Regulated Pest List Database. pestlist.worldseed.org Nyon Switzerland
Apium graveolens
celery
No
VERTAA-9,VERTAA-10
Pathway not proven. Only one reference found indicating see may be a pathway, but no data was presented, and no other literature found indicating that seed is a pathway.
Beta vulgaris
table beet, swiss chard
No
VERTAA-2,VERTAA-9
On reference found indicating B. vulgaris is attacked by this fungus. No literature found indicating that seed is a pathway for this crop.
Cucumis melo
melon
No
VERTAA-2,VERTAA-3
On reference found indicating melon is attacked by this fungus. No evidence that seed is a pathway for this crop. Verticillium dahlia is the primary pathogen of verticillium wilt in cucurbits.
Cucurbita spp.
squash, pumpkin, gourd
No
VERTAA-2,VERTAA-9
On reference found indicating Cucurbit spp. may be attacked by this fungus.. No references found indicating seed is a pathway.
Glycine max
soybean
No
VERTAA-2,VERTAA-9
On reference found indicating soybean is attacked by this fungus. but no citation presented. No evidence that seed is a pathway for this crop.
Helianthus annuus
sunflower
No
VERTAA-9,VERTAA-11
Pathway not proven. Though seed is listed as a pathway, only seed from plants growing in a "verticillium nursery" under controlled conditions were used. The pathogen was not isolated from seeds from diseased plants outside the verticillium nursery. No reports of seed as a pathway under natural conditions.
Richardson, MJ. 1990. Annotated List of Seedborne Diseases, Fourth Ed. International Seed Testing Association. Zurich, Switzerland
Sackston, W. E., & Martens, J. W. (1959). Dissemination of Verticillium albo-atrum on seed of sunflower (Helianthus annuus). Canadian Journal of Botany, 37: 759-768.
Lactuca sativa
lettuce
No
VERTAA-9,ISF RPLD
There is no evidence that lettuce is a host for this pathogen. Though seed is listed as a pathway in one reference, the research cited actually used a Verticillium dahlia strain from lettuce seed. Verticillium dahlia is the primary pathogen causing verticillium wilt in lettuce.
Phaseolus vulgaris
common bean
No
VERTAA-2,VERTAA-9
On reference found indicating that common bean is attacked by this fungus, but no data presented. No evidence that seed is a pathway for this crop.
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