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Exploring Taphrina deformans, the Springtime Scourge of Peach.

Clotilde Nigon1, Morgane Roth1, Bénédicte Quilot1

  • 1INRAE, UR GAFL, Avignon, France.

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|June 22, 2026
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Summary

Peach leaf curl, caused by Taphrina deformans, severely impacts peach trees. This review synthesizes current knowledge on its life cycle and management, highlighting research gaps for sustainable control.

Keywords:
Prunus persicabreedingdisease managementepidemiologylife cyclepeach leaf curl

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Area of Science:

  • Plant Pathology
  • Mycology
  • Horticulture

Background:

  • Peach leaf curl is a recurrent spring disease in peach orchards caused by the fungal pathogen Taphrina deformans.
  • The pathogen infects peach (Prunus persica) and other Prunus crops, causing severe leaf deformation, defoliation, reduced tree vigor, yield loss, and potentially tree death.
  • T. deformans can also affect flowers, twigs, and fruits, with infection occurring as young leaves emerge from buds.

Purpose of the Study:

  • To compile and synthesize existing knowledge on Taphrina deformans.
  • To provide a comprehensive representation of the T. deformans life cycle.
  • To identify major research gaps and stimulate coordinated efforts for integrated and sustainable management of peach leaf curl.

Main Methods:

  • Review and synthesis of fragmented and dispersed literature on Taphrina deformans.
  • Analysis of the pathogen's life cycle, from overwintering spores to infection and sporulation.
  • Examination of plant-fungus interactions, including cellular and metabolic changes in infected tissues.

Main Results:

  • T. deformans overwinters as spores on bark and between bud scales, infecting young leaves in spring.
  • Infection leads to disorganized leaf structure, hyperplastic and hypertrophic cells, and activation of plant defense pathways.
  • Current control relies on preventive fungicide applications, primarily copper-based products.

Conclusions:

  • Knowledge regarding Taphrina deformans remains limited and fragmented.
  • A complete life cycle representation is provided, identifying critical research gaps.
  • Consolidated knowledge and outlined research priorities aim to foster sustainable management strategies for peach leaf curl.