Effect of phosphites on the content of total phenols and chlorogenic acid in peach-Monilinia fructicola pathosystem

  • Andrea Leone Universidad Nacional de Rosario, Facultad de Ciencias Agrarias, Zavalla, Santa Fe, Argentina. https://orcid.org/0000-0001-8613-4373
  • Hugo Permingeat Universidad Nacional de Rosario, Facultad de Ciencias Agrarias, Zavalla, Santa Fe, Argentina. https://orcid.org/0000-0002-2029-7097
  • Mariel Mitidieri Instituto Nacional de Tecnología Agropecuaria (INTA), Laboratorio de Fitopatología, San Pedro, Buenos Aires, Argentina. https://orcid.org/0000-0001-6522-277X
Keywords: brown rot, Prunus persica, resistance inductors

Abstract

Monilinia fructicola is a fungal pathogen responsible for fruit brown rot in many species of the Prunus genus. The use of abiotic elicitors as phosphites is being studied for the induction of fruit resistance as an alternative to the use of synthetic fungicides. The aim of this work was to evaluate the effect of phosphites on the content of total phenols, chlorogenic acid and changes in susceptibility to M. fructicola in peach fruits. Peach fruits of the cultivars Flordaking and Elegant Lady were treated with potassium- and calcium-phosphites, and harvested at three development stages: green fruit (GF), pit hardening (PH) and harvest time (HT). After harvesting, half of them were inoculated with a conidia suspension of M. fructicola under laboratory conditions. Total phenols and chlorogenic acid content were assayed on the skin of the fruits. Results showed different behaviors according to the cultivar. In Flordaking, the phosphite treatment allowed an increase in the content of total phenols in the stages of GF and PH, but not for chlorogenic acid. In the presence of inoculum, chlorogenic acid decreased, but not the total phenols. The Elegant Lady did not show differences in the content of total phenols and chlorogenic acid after the phosphite treatments. Both metabolites exhibited a seasonal behavior.

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Published
2021-04-06
How to Cite
1.
Leone A, Permingeat H, Mitidieri M. Effect of phosphites on the content of total phenols and chlorogenic acid in peach-Monilinia fructicola pathosystem. Agrociencia Uruguay [Internet]. 6Apr.2021 [cited 21Apr.2021];25(NE1):e404. Available from: http://agrocienciauruguay.uy/ojs/index.php/agrociencia/article/view/404
Section
Plant protection