Bożena Cwalina-Ambroziak

University of Warmia and Mazury in Olsztyn

Ryszard Amarowicz

Polish Academy of Sciences in Olsztyn

Małgorzata Głosek

University of Warmia and Mazury in Olsztyn

Michał Janiak

Polish Academy of Sciences in Olsztyn


Similary to other fungal species of the genus Alternaria, Alternaria radicina is a major pathogen that infects both the aboveground and underground parts of carrot
plants. Changes in the concentrations of phenolic compounds are observed in infected carrot plants. Carrot seedlings were inoculated with the most pathogenic isolates of Alternaria radicina selected in a laboratory test. A phytopathological analysis was performed to determine the health status of carrot plants. The concentrations of phenolic acids in petioles were determined four weeks after inoculation with A. radicina and at harvest. The results of a greenhouse experiment revealed more severe disease symptoms on carrot plants cv. Koral inoculated with A. radicina isolates, compared with cv. Bolero. The content of the predominant phenolic acid (chlorogenic acid) was found to decrease in the leaf stalks of carrots cv. Koral inoculated with A. radicina. A statistically non-significant increase
in chlorogenic acid levels was noted in the leaf stalks of carrots cv. Bolero in the experimental and control groups.


Daucus carota L., plant health, pathogens, phenolic compounds

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Bożena Cwalina-Ambroziak 
University of Warmia and Mazury in Olsztyn
Ryszard Amarowicz 
Polish Academy of Sciences in Olsztyn
Małgorzata Głosek 
University of Warmia and Mazury in Olsztyn
Michał Janiak 
Polish Academy of Sciences in Olsztyn



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