Salicylic Acid-Cryotherapy Treatment for Elimination of Potato Virus S from Solanum Tuberosum

  • Diana R. Ruiz-Sáenz
  • Diana D. Ayala-Hernández
  • Takao Niino
  • Esmeralda J. Cruz-Gutiérrez
  • Jesús G. Aquino-Martínez
  • Humberto A. López-DelgadoEmail author


Potato virus S (PVS) is one of the most difficult viruses to eliminate by thermotherapy due to its thermal deactivation point. Pre-treatment methods involving salicylic acid (SA) have been successfully carried in conjugation with cryogenic methods to reduce oxidative damage and eliminate viruses. In the present investigation, the effect of SA to protect Solanum tuberosum plants infected with PVS from oxidative damage from subsequent cryotherapy was studied. Vulnerable genotypes to cryogenic protocol were selected, with two SA treatments examined. Potato clones were pretreated with SA (0, 10−5, and 10−6 M), plant development was evaluated and then exposed to cryotherapy. This was followed up by a plant development evaluation and virus testing. After the initial treatment with SA, the plants exhibited an increase in the variables evaluated before cryotherapy. After cryotherapy, between 66.6% and 100% of the treated plants were found to be virus-free compared to control plants which exhibited 0% survival. Thus, the SA-cryotherapy treatment combination described appears to enhance plant survival and eliminate PVS from potato plants.


Virosis Virus cleaning Therapy Cryogenic method Salicylate Oxidative damage 


El virus de la papa S (PVS) es uno de los más difíciles de eliminar por termoterapia debido a su punto de desactivación térmica. Los pretratamientos de ácido salicílico (AS) se han probado con éxito en métodos criogénicos para reducir el daño oxidativo y para la limpieza del virus mediante termoterapia. En la presente investigación, se estudió el efecto de AS como protector al daño oxidativo por crioterapia en plantas de Solanum tuberosum infectadas con PVS. Genotipos vulnerables a protocolo criogénico fueron seleccionados y probados con dos tratamientos de AS. Clones de papa fueron pretratados con AS (0, 10−5, and 10−6 M), se evaluó el desarrollo de las plantas y posteriormente se expusieron a crioterapia, seguido de evaluación del desarrollo de las plantas y prueba de presencia de virus. Las plantas tratadas con AS aumentaron las variables evaluadas antes de la crioterapia. Después de la crioterapia, se obtuvo un 66.6–100% de plantas libres de virus en comparación con el testigo, que mostró una supervivencia del 0%. La combinación de crioterapia AS mejoró la supervivencia y, por lo tanto, facilitó la limpieza de virus PVS.



We knowledge to M.C. Guadalupe Ríos Dominguez and Ing Rocio Sara Valentina Hernández Sánchez, from the pathology laboratory of ICAMEX for performing DAS-ELISA tests.


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Copyright information

© The Potato Association of America 2019

Authors and Affiliations

  • Diana R. Ruiz-Sáenz
    • 1
  • Diana D. Ayala-Hernández
    • 1
  • Takao Niino
    • 2
    • 3
  • Esmeralda J. Cruz-Gutiérrez
    • 2
  • Jesús G. Aquino-Martínez
    • 4
  • Humberto A. López-Delgado
    • 1
    Email author
  1. 1.Programa Nacional de PapaInstituto Nacional de Investigaciones Forestales Agropecuarias y PecuariasMetepecMéxico
  2. 2.Centro Nacional de Recursos Genéticos, INIFAPTepatitlán de MorelosMéxico
  3. 3.Gene Research CenterUniversity of TsukubaTsukubaJapan
  4. 4.Laboratorio de Fitopatología, ICAMEXMetepecMéxico

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