Peronosporales Species Associated with Strawberry Crown Rot in the Czech Republic

The symptoms of crown rot on strawberry plants are considered typical for the pathogen , which causes high losses of this crop. However, an unknown number of related species of pathogens of Peronosporales cause symptoms quite similar to those caused by . To determine their spectrum and importance, s...

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Bibliographic Details
Published in:Journal of fungi (Basel) 2022-03, Vol.8 (4), p.346
Main Authors: Pánek, Matěj, Maňasová, Marie, Wenzlová, Jana, Zouhar, Miloslav, Mazáková, Jana
Format: Article
Language:English
Subjects:
Baiting
Crown rot
Disease
Drinking water
Farms
Flowers & plants
Fruits
Fungicides
Morphology
oomycetes
Pathogens
Peronosporales
Phytophthora cactorum
Plant protection
Pythium
root pathogens
root rot
Species
Strawberries
strawberry disease
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Summary:The symptoms of crown rot on strawberry plants are considered typical for the pathogen , which causes high losses of this crop. However, an unknown number of related species of pathogens of Peronosporales cause symptoms quite similar to those caused by . To determine their spectrum and importance, strawberry plants were sampled from 41 farms in the Czech Republic. The cultures were isolated from the symptomatic plants using the baiting method, with subsequent cultivation on a semiselective medium. Isolates were identified to the species level using nuclear ribosomal internal transcribed spacer (ITS) barcoding after preliminary morphological determination. In total, 175 isolates of 24 species of , , and were detected. The most represented was with 113 (65%) isolates, which was recorded in 61% of farms, and the complex with 20 (11%) isolates, which was recorded in 27% of farms. Other species were represented in units of percent. Large differences between farms in the species spectra were ascertained. The differences between species in cardinal growth temperatures and different management of the farms are discussed as a main reason for such a diversification. Regarding the dissimilar sensitivity of various species of Peronosporales against fungicides, the proper determination of the cause of disease is of crucial significance in plant protection.
ISSN:2309-608X
2309-608X
DOI:10.3390/jof8040346