Pythium root rot of celery seedlings was found in greenhouses in South Moravia in the spring of 2015. Based on morphological characteristics and rDNA-ITS sequences, the causal organism was identified as Pythium mastophorum. The pot inoculation test demonstrated that P. mastophorum was pathogenic to celery and parsley. This is the first report of Pythium mastophorum causing stunting and yellowing leaves, discolouration and rot of root tips and possible plant death of celery in the Czech Republic.
Šafránková I., Holková L. (2017): First record of Pythium mastophorum on celery seedlings in the Czech Republic. – Czech Mycology 69(2): 133–142.