A survey of ‘Candidatus Phytoplasma pyri’ isolates in the Czech Republic based on imp gene genotyping

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62690094%3A18470%2F22%3A50019068" target="_blank" >RIV/62690094:18470/22:50019068 - isvavai.cz</a>
Alternative codes found
RIV/25271121:_____/22:N0000123 RIV/62156489:43510/22:43921480
Result on the web
<a href="https://www.notulaebotanicae.ro/index.php/nbha/article/view/12602" target="_blank" >https://www.notulaebotanicae.ro/index.php/nbha/article/view/12602</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.15835/nbha50112602" target="_blank" >10.15835/nbha50112602</a>

Result language
angličtina
Original language name
A survey of ‘Candidatus Phytoplasma pyri’ isolates in the Czech Republic based on imp gene genotyping
Original language description
'Candidatus Phytoplasma spp.' are pathogenic bacteria that infect many plant species. 'Candidatus Phytoplasma pyri', one of the members of the 16SrX group causes pear decline disease that adversely affects pear crops. To describe the prevalence of 'Ca. P. pyri' genotypes in the Czech Republic, 143 pear samples were collected from 41 locations including commercial orchards as well as trees along roads. Phytoplasma was detected by PCR in 115 samples, and it was possible to determine imp gene genotype in 84 samples. The most frequent genotypes were A1, B1, and C, which were identified in 71% of phytoplasma positive samples. 'Ca. P. pyri' was present either alone or as a mix of two populations in 88% of genotyped samples, and in another 6% of samples it was found in a mixed infection with 'Ca. Phytoplasma mali'. A sole infection with 'Ca. Phytoplasma mali' was observed in 6% of samples. As for symptoms, 19% of symptomatic samples were found to be phytoplasma negative, and 74% of asymptomatic samples proved to be phytoplasma positive; leaf roll was more often observed in phytoplasma positive samples, while leaf narrowing rather indicated the absence of phytoplasma. The mildest symptoms were observed in samples infected with 'Ca. P. pyri' of the A1 imp genotype.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10611 - Plant sciences, botany

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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