American Potato Journal

, Volume 66, Issue 7, pp 417–423 | Cite as

Differential ethylene production by potato tuber tissue inoculated with a compatible or an incompatible race ofPhytophthora infestans

  • K. D. Gwinn
  • D. A. Stelzig
  • S. K. Bhatia


Synthesis of ethylene in Kennebec potato tuber discs was measured at various time intervals after inoculation with zoospores of race 0 (incompatible) or race 1,2,3,4 (compatible) ofPhytophthora infestans (Mont.) de Bary. A burst of ethylene production was observed within 6 hr after inoculation with race 0, but not with race 1,2,3,4. This response may have been due to recognition of the incompatible race 0 during host penetration. Additional ethylene was synthesized concomitant with symptom appearance in both compatible and incompatible combinations.

Additional key words

Ethylene Phytophthora infestans late blight resistance plant growth regulators 


La síntesis de etileno fué medida en discos tuberosos de la papa Kennebec. Las mediciones se realizaron durante varios intervalos después de la inoculación con zoosporas de raza 0 (incompatible) ó raza 1,2,3,4 (compatible) de Phytophthora infestans (Mont.) de Barry. Dentros de las 6 horas de la inoculación con raza 0 se observó un gran aumento en la productión de etileno, esto no se observó en las razas 1,2,3,4. Esta respuesta se puede haber debido al reconocimiento de la raza incompatible 0 durante la penetratión el huesped. Síntesis adicional de etileno se observo posteriormente y simultaneamente con la aparición de los síntomos en las combinaciones compatibles e incompatibles.


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Copyright information

© Springer 1989

Authors and Affiliations

  • K. D. Gwinn
    • 1
  • D. A. Stelzig
    • 1
  • S. K. Bhatia
    • 1
  1. 1.Division of Plant and Soil SciencesWest Virginia UniversityMorgantown

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