Pelargonium spp.
geranium
4 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-1
Listed as a host, but uncommon. No evidence that seed is a pathway
CORBFA-3, CORBFA-1
Ralstonia solanacearum
bacterium
Too many to list, see CABI CPC for a complete list
Worldwide
Widespread
China
2022-08-30
Most important economic crop is potato. Host range is extremely wide.
No
RLSTSO-8
No references found indicating seed is a pathway.
RLSTSO-8
Hudelson, B. 2020. Ralstonia Wilt. https://hort.extension.wisc.edu/articles/ralstonia-wilt/
Tobacco ringspot virus
virus
Anemone necrosis virus, Annulus tabaci, Blueberry necrotic ringspot virus, Nicotiana virus 12, Soybean bud blight virus, Tobacco Brazilian streak virus, Tobacco ringspot nepovirus, Tobacco ringspot virus No. 1
Worldwide
Widespread
Korea, China
2022-09-22
Nepovirus. Requires the Xiphinema americanum nematode for transmission. This pest has been reported to be in Korea.
Extensive host range includes many weed, fruit and ornamental plant species. The vegetables and agronomic crops listed below are important
No
TORSXX-10
Pathway not proven. No evidence of seed transmission in nature. Seed pathway was shown in cross pollination experiments in the laboratory or greenhouse only and with artificially inoculated plants.
TORSXX-10
Scarborough BA and Smith SH. 1975. Seed transmission of tobacco and tomato ringspot viruses in geraniums. Phytopathology 65:835-836.
Tomato ringspot virus
virus
blackberry (Himalaya) mosaic virus, Euonymus chlorotic ringspot virus, Euonymus ringspot virus, grape yellow vein virus, grapevine yellow vein virus, Nicotiana 13 virus, peach stem pitting virus, prune brown line virus, Prunus stem pitting virus, red currant mosaic virus, tobacco ringspot virus 2, tomato ringspot nepovirus, ToRSV, winter peach mosaic virus
Africa: Egypt, Nigeria, Togo; Asia: China, India, Iran, Japan, Jodan, Lebanon, Oman, Pakistan, South Korea, Taiwan, Turkey; Europe: Belarus, Croatia, France, Netherlands, Poland, Russia, Slovakia, Spain, UK; North America: Canada, Puerto Rico, USA; Oceania: Fiji, New Zealand; South America: Brazil, Chile, Colombia, Peru, Venezuela.
Widespread
Korea, Mexico, Thailand
2022-11-07
Natural spread is confined to areas where there are moderate to high populations of nematode vectors belonging to the genus Xiphinema. Requires the nematode to spread. Seed transmission only shown in strawberry and raspberry in nature.
Wide host range, primarily ornamentals and fruit trees and berries. Vegetable crops infected are listed below. Not known to infect grains and grasses
No
TORSV0-3, TORSV0-8
Pathway not proven. Seed transmission was shown in the a the laboratory. There is no evidence that seed is a pathway in nature.
TORSV0-3, TORSV0-8
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