Vol. 63 No. 1 (2024)
Articles

Characterization and pathogenicity of Pleurostoma richardsiae causing decline of mango trees in Southern Italy

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  • Giuseppa Rosaria LEONARDI,
  • Dalia AIELLO,
  • Giorgio GUSELLA,
  • Giancarlo POLIZZI
Giuseppa Rosaria LEONARDI
Dipartimento di Agricoltura, Alimentazione e Ambiente, University of Catania, 95123, Via S. Sofia 100, Catania
Dalia AIELLO
Dipartimento di Agricoltura, Alimentazione e Ambiente, University of Catania, 95123, Via S. Sofia 100, Catania
Giorgio GUSELLA
Dipartimento di Agricoltura, Alimentazione e Ambiente, University of Catania, 95123, Via S. Sofia 100, Catania
Giancarlo POLIZZI
Dipartimento di Agricoltura, Alimentazione e Ambiente, University of Catania, 95123, Via S. Sofia 100, Catania
DOI: https://doi.org/10.36253/phyto-15104

Published 2024-05-13

Keywords

  • Fungal diseases,
  • Mangifera indica,
  • wood necrosis,
  • twig dieback,
  • phylogeny

How to Cite

[1]
G. R. LEONARDI, D. AIELLO, G. GUSELLA, and G. POLIZZI, “Characterization and pathogenicity of Pleurostoma richardsiae causing decline of mango trees in Southern Italy”, Phytopathol. Mediterr., vol. 63, no. 1, pp. 111–118, May 2024.

Copyright (c) 2024 Giuseppa Rosaria LEONARDI, Dalia AIELLO, Giorgio GUSELLA, Giancarlo POLIZZI

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This work is licensed under a Creative Commons Attribution 4.0 International License.

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Abstract

Mango trees (Mangifera indica) showing symptoms of twig and branch dieback, internal wood necroses, and decline, were surveyed in an orchard in Palermo province (Eastern Sicily, Italy). A Pleurostoma-like fungus was consistently isolated from symptomatic wood tissues. Based on morphology and phylogenetic analysis of ITS and tub2 sequences, the fungus was identified as Pleurostoma richardsiae. A pathogenicity test was conducted by inoculating stems of 2-year-old mango seedlings with mycelium plugs and conidium suspensions of a representative isolate. Two months after inoculation, necrotic lesions were observed around the inoculation points, and P. richardsiae was reisolated from the necrotic tissues. This is the first report of P. richardsiae causing dieback and decline of mango trees.

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