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.
A heavily infected plant showing yellowish warts at soil level.
Courtesy: HLB B.V. Wijster (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)
Older wart tissue with sporangia in sori.
Courtesy: CSL, York (GB) - British Crown
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
Small wart on potato tuber
Courtesy: Jan Hinrichs-Berger / LTZ Augustenberg (DE)
Small wart on potato tuber
Courtesy: Jan Hinrichs-Berger / LTZ Augustenberg (DE)
Small wart on potato tuber
Courtesy: Jan Hinrichs-Berger / LTZ Augustenberg (DE)
Small wart on potato tuber
Courtesy: Jan Hinrichs-Berger / LTZ Augustenberg (DE)
Ripe winter spore (left), empty sorus (right) & immature winter sporangia above
Courtesy: J. Przetakiewicz, IHAR-PIB, PL
Sori with visible summer sporangia under microscope
Courtesy: J. Przetakiewicz, IHAR-PIB, PL
Full sporangium after germination from a resting spore
Courtesy: L. Bender, Julius Kühn-Institut, Institute for National and International Plant Health, DE
Glynne-Lemmerzahl method: inoculation with pieces of fresh warts placed in the water-filled Vaseline rings
Courtesy: J. Przetakiewicz, IHAR-PIB, PL
Responses formed on sprouts in Spieckermann tests.
Courtesy: Plant Protection Service, Wageningen (NL)
Early defence necrosis (reaction type 1)
Courtesy: J. Przetakiewicz, IHAR-PIB, PL
Very late defence necrosis (reaction type 3)
Courtesy: J. Przetakiewicz, IHAR-PIB, PL
Very late defence necrosis (reaction type 3)
Courtesy: J. Przetakiewicz, IHAR-PIB, PL
Spieckermann method: tray with cardboard plate inside containing potato eye plugs
Courtesy: G. van Leeuwen, NVWA, NL
Spieckermann method: tray containing eye plugs of varieties Deodara and Producent, 8 weeks after inoculation. Note: the black-coloured tissue, especially in left-side Deodara, are decaying warts (reaction type 5)
Courtesy: G. van Leeuwen, NVWA, NL
Summer sporangia under stereomicroscope
Courtesy: J. Przetakiewicz, IHAR-PIB, PL
Susceptible reaction (type 4)
Courtesy: J. Przetakiewicz, IHAR-PIB, PL
Susceptible reaction (type 2)
Courtesy: J. Przetakiewicz, IHAR-PIB, PL
Susceptible reaction (type 5)
Courtesy: J. Przetakiewicz, IHAR-PIB, PL
Late defence necrosis (reaction type 2)
Courtesy: J. Przetakiewicz, IHAR-PIB, PL