Journal of Phytopathology (2013) 161, 666-670

Jana Fránová and Josef Spak (2013)
First report of a 16SrI-C phytoplasma infecting celery (Apium graveolens) with stunting, bushy top and phyllody in the Czech Republic
Journal of Phytopathology 161 (9), 666-670
Abstract: Apium graveolens L. plants showing stunting, purplish/whitening of new leaves, flower abnormalities and bushy tops were observed in South Bohemia (Czech Republic) during 2011 and 2012. Transmission electron microscopy observations showed phytoplasmas in phloem sieve tube elements of symptomatic but not healthy plants. Polymerase chain reactions with universal and group-specific phytoplasma primers followed by restriction fragment length polymorphism analyses and sequencing of 16S rDNA enabled classification of the detected phytoplasmas into the aster yellows group, ribosomal subgroup 16SrI-C. Identical analyses of the ribosomal protein genes rpl22 and rps3 were used for further classification and revealed affiliation of the phytoplasmas with the rpIC subgroups. This is the first report of naturally occurring clover phyllody phytoplasma in A. graveolens in both the Czech Republic and worldwide.
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Link to article at publishers website
Database assignments for author(s): Jana Fránová, Josef Spak

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	16SrI phytoplasma group	Celery (Apium graveolens)	Czech Republic