Phytopathology (2020) 110, 1124-1131

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Mary Ortiz-Castro, Terra Hartman, Teresa Coutinho, Jillian M. Lang, Kevin Korus, Jan E. Leach, Tamra Jackson-Ziems and Kirk Broders (2020)
Current understanding of the history, global spread, ecology, evolution, and management of the corn bacterial leaf streak pathogen, Xanthomonas vasicola pv. vasculorum
Phytopathology 110 (6), 1124-1131
Abstract: Bacterial leaf streak of corn, caused by Xanthomonas vasicola pv. vasculorum, has been present in South Africa for over 70 years, but is an emerging disease of corn in North and South America. The only scientific information pertaining to this disease on corn came from work done in South Africa, which primarily investigated host range on other African crops, such as sugarcane and banana. As a result, when the disease was first reported in the United States in 2016, there was very limited information on where this pathogen came from, how it infects its host, what plant tissue(s) it is capable of infecting, where initial inoculum comes from at the beginning of each crop season, how the bacterium spreads from plant to plant and long distance, what meteorological variables and agronomic practices favor disease development and spread, how many other plant species X. vasicola pv. vasculorum is capable of infecting or using as alternate hosts, and if the bacterium will be able to persist in all corn growing regions of the United States. There were also no rapid diagnostic assays available which initially hindered prompt identification prior to the development of molecular diagnostic tools. The goal of this synthesis is to review the history of X. vasicola pv. vasculorum and bacterial leaf streak in South Africa and its movement to North and South America, and highlight the recent research that has been done in response to the emergence of this bacterial disease.
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Database assignments for author(s): Teresa A. Coutinho, Jan E. Leach

Research topic(s) for pests/diseases/weeds:
review


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.
Xanthomonas vasicola pv. vasculorum Maize/corn (Zea mays) U.S.A. (SW)
Xanthomonas vasicola pv. vasculorum Maize/corn (Zea mays) South Africa
Xanthomonas vasicola pv. vasculorum Maize/corn (Zea mays) Argentina
Xanthomonas vasicola pv. vasculorum Maize/corn (Zea mays) U.S.A. (mid N)
Xanthomonas vasicola pv. vasculorum Maize/corn (Zea mays) U.S.A. (mid S)