Vol. 62 No. 3 (2023)
Articles

Phytophthora spp. diversity in commercial nursery stocks shown through examination of plant health practices for growers and traders of ornamental plants

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  • Duccio MIGLIORINI,
  • Francesco PECORI,
  • Giulia ARATI,
  • Nicola LUCHI,
  • Emanuele BEGLIOMINI,
  • Alessandro GNESINI,
  • Luisa GHELARDINI,
  • Alberto SANTINI
Duccio MIGLIORINI
National Research Council - Institute for Sustainable Plant Protection, Sesto Fiorentino
Francesco PECORI
National Research Council - Institute for Sustainable Plant Protection, Sesto Fiorentino
Giulia ARATI
National Research Council - Institute for Sustainable Plant Protection, Sesto Fiorentino
Nicola LUCHI
National Research Council - Institute for Sustainable Plant Protection, Sesto Fiorentino
Emanuele BEGLIOMINI
Giorgio Tesi Vivai S.S., Pistoia
Alessandro GNESINI
Giorgio Tesi Vivai S.S., Pistoia
Luisa GHELARDINI
DAGRI Department of Agricultural, Food, Environmental and Forest Sciences and Technologies, University of Florence Piazzale delle Cascine 18, 50144 Firenze
Alberto SANTINI
National Research Council - Institute for Sustainable Plant Protection, Sesto Fiorentino
DOI: https://doi.org/10.36253/phyto-14893
Categories

Published 2023-12-30

Keywords

  • Oomycetes spread,
  • biological hazard,
  • potted plants health,
  • stakeholder involvement,
  • risks warning

How to Cite

[1]
D. MIGLIORINI, “Phytophthora spp. diversity in commercial nursery stocks shown through examination of plant health practices for growers and traders of ornamental plants”, Phytopathol. Mediterr., vol. 62, no. 3, pp. 489–497, Dec. 2023.

Copyright (c) 2023 Duccio MIGLIORINI, Francesco PECORI, Giulia ARATI, Nicola LUCHI, Emanuele BEGLIOMINI, Alessandro GNESINI, Luisa GHELARDINI, Alberto SANTINI

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

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Abstract

Management of Phytophthora in commercial plant nurseries is important for biosecurity of traded plants, and monitoring of incidence of this important plant pathogen is a prerequisite to prevent its spread. Potted plants showing Phytophthora spp. symptoms, and nursery irrigation and runoff water, were sampled from a commercial and a non-commercial nursery in Tuscany, Italy. The samples were processed to detect Phytophthora spp., using baiting, and molecular identification of obtained isolates. High Phytophthora incidence was shown in the commercial nursery. Twelve Phytophthora spp. were isolated from potted plants or nursery runoff water. Individual symptomatic potted plants were infected with up to four pathogenic Phytophthora spp. The water sampled from nursery drainage canals had the greatest Phytophthora species diversity, with less diversity in ‘flow-through’ water samples (irrigation water percolated through potted plants) and samples from water puddles inside the nurseries. This study showed high incidence of Phytophthora in the commercial nursery, and associated risk of spread of these pathogens within and outside nursery operations. Lack of appropriate disease management probably increases occurrence of these pathogens.

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