EPPO Global Database

Synchytrium endobioticum(SYNCEN)

Photos

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Warts formed on the tubers in the soil may surface during the growing season.

Courtesy: CSL, York (GB) - British Crown

Newly harvested, warted potato tubers of cv. Duke of York; note that some warts are already starting to rot.

Courtesy: Central Science Laboratory, York (GB) - British Crown.

Warted tubers as seen at harvest.

Courtesy: JKI, Kleinmachnow (DE)

Warts formed on the tubers in the soil may surface during the growing season.

Winter sporangia as seen under the light microscope.

Courtesy: HLB B.V., Wijster (NL).

Dead resting (winter) sporangium of S. endobioticum.

Courtesy: Central Science Laboratory, York (GB) - British Crown.

A heavily infected plant showing yellowish warts on subsoil tubers and greenish warts at soil level.

Courtesy: HLB B.V., Wijster (NL).

Live resting (winter) sporangium of S. endobioticum.

Courtesy: Central Science Laboratory, York (GB) - British Crown.

Older wart tissue with sporangia in sori.

Courtesy: CSL, York (GB) - British Crown

A heavily infected plant showing yellowish warts at soil level.

Courtesy: HLB B.V. Wijster (NL)

Responses formed on sprouts in Spieckermann tests.

Courtesy: Plant Protection Service, Wageningen (NL)

Winter sporangia in young wart tissue.

Courtesy: CSL, York (GB) - British Crown

Warts may be formed on emerging sprouts which will not develop into shoots but obtain an irregular, warty cauliflower-like appearance.

Courtesy: HLB B.V., Wijster (NL)

Germinated winter spore with empty sorus attached. Germination pore visible in winter spore

Courtesy: Alexandra Schlenzig, SASA, Edinburgh, UK

Germinating winter spore with sorus containing sporangium

Courtesy: Alexandra Schlenzig, SASA, Edinburgh, UK

Potato cultivar 'Morene' with extensive fresh wart tissue

Courtesy: Science and Advice for Scottish Agriculture (SASA), Edinburgh, UK