Plant Protection Science (2017) 53, 153-158

Irena Petrzelová, Michaela Jemelková and Ivana Dolezalová (2017)
Identification of a rust disease of giant knapweed in the Czech Republic
Plant Protection Science 53 (3), 153-158
Abstract: During the vegetation seasons 2012–2015, symptoms of severe infections by a rust disease were recorded on plants of the ornamental species Centaurea macrocephala. Based on morphology, the pathogen was identified as Puccinia jaceae or Puccinia hieracii, which have recently been considered as synonyms. However, substantial differences between P. jaceae and P. hieracii in nucleotide sequences of the ITS2 region provide evidence for the molecular identification of the specimen as P. jaceae.
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Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Puccinia (genus)		Czech Republic
	Centaurea (weeds)		Czech Republic
Puccinia jaceae (weed pathogen)	Centaurea (weeds)		Czech Republic