EPPO Global Database

Puccinia horiana(PUCCHN)

Distribution details in United States of America

Situation
Current pest situation evaluated by EPPO on the basis of information dated 2012: Transient, under eradication
First recorded in: 1977
From CABI Disease map 403 (2008): Absent, pest eradicated
From NPPO: Absent, pest eradicated
Comments
First found in USA in 1977/1978 in New Jersey, New York and Pennsylvania. Outbreaks are occasionally reported but are always subject to eradication measures.

Studies done on a few plants which had been found infected in 2010 in 6 outdoor garden locations in University Park (Pennsylvania) showed that the fungus could overwinter in Pennsylvania (the disease was observed again in 2012).
References
* O'Keefe G (2012) First confirmed report that Puccinia horiana, causal agent of chrysanthemum white rust, can overwinter in Pennsylvania. Plant Disease 96(9), p 1381.

* Punithalingam, E. (1968) Puccinia horiana. CMI descriptions of pathogenic fungi and bacteria n°176. (CAB).
Situation in neighbouring countries
Country State Status
Canada British Columbia Present, few occurrences view...
Canada Ontario Absent, pest eradicated view...
Canada Transient, under eradication view...
Mexico Present, few occurrences view...