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Progress towards Sustainable Control of Xylella fastidiosa subsp. pauca in Olive Groves of Salento (Apulia, Italy).
Scortichini, Marco; Loreti, Stefania; Pucci, Nicoletta; Scala, Valeria; Tatulli, Giuseppe; Verweire, Dimitri; Oehl, Michael; Widmer, Urs; Codina, Josep Massana; Hertl, Peter; Cesari, Gianluigi; De Caroli, Monica; Angilè, Federica; Migoni, Danilo; Del Coco, Laura; Girelli, Chiara Roberta; Dalessandro, Giuseppe; Fanizzi, Francesco Paolo.
Afiliação
  • Scortichini M; Research Centre for Olive, Fruit Trees and Citrus Crops, Council for Agricultural Research and Economics (CREA), 00134 Roma, Italy.
  • Loreti S; Research Centre for Plant Protection and Certification, Council for Agricultural Research and Economics (CREA), 00156 Roma, Italy.
  • Pucci N; Research Centre for Plant Protection and Certification, Council for Agricultural Research and Economics (CREA), 00156 Roma, Italy.
  • Scala V; Research Centre for Plant Protection and Certification, Council for Agricultural Research and Economics (CREA), 00156 Roma, Italy.
  • Tatulli G; Research Centre for Plant Protection and Certification, Council for Agricultural Research and Economics (CREA), 00156 Roma, Italy.
  • Verweire D; Invaio Sciences, Cambridge, MA 02138, USA.
  • Oehl M; Invaio Sciences, Cambridge, MA 02138, USA.
  • Widmer U; Invaio Sciences, Cambridge, MA 02138, USA.
  • Codina JM; Invaio Sciences, Cambridge, MA 02138, USA.
  • Hertl P; Invaio Sciences, Cambridge, MA 02138, USA.
  • Cesari G; Agrifound Italia, 50122 Firenze, Italy.
  • De Caroli M; Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Monteroni-Lecce, Italy.
  • Angilè F; Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Monteroni-Lecce, Italy.
  • Migoni D; Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Monteroni-Lecce, Italy.
  • Del Coco L; Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Monteroni-Lecce, Italy.
  • Girelli CR; Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Monteroni-Lecce, Italy.
  • Dalessandro G; Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Monteroni-Lecce, Italy.
  • Fanizzi FP; Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Monteroni-Lecce, Italy.
Pathogens ; 10(6)2021 May 29.
Article em En | MEDLINE | ID: mdl-34072394
Xylella fastidiosa subsp. pauca is the causal agent of "olive quick decline syndrome" in Salento (Apulia, Italy). On April 2015, we started interdisciplinary studies to provide a sustainable control strategy for this pathogen that threatens the multi-millennial olive agroecosystem of Salento. Confocal laser scanning microscopy and fluorescence quantification showed that a zinc-copper-citric acid biocomplex-Dentamet®-reached the olive xylem tissue either after the spraying of the canopy or injection into the trunk, demonstrating its effective systemicity. The biocomplex showed in vitro bactericidal activity towards all X. fastidiosa subspecies. A mid-term evaluation of the control strategy performed in some olive groves of Salento indicated that this biocomplex significantly reduced both the symptoms and X. f. subsp. pauca cell concentration within the leaves of the local cultivars Ogliarola salentina and Cellina di Nardò. The treated trees started again to yield. A 1H-NMR metabolomic approach revealed, upon the treatments, a consistent increase in malic acid and γ-aminobutyrate for Ogliarola salentina and Cellina di Nardò trees, respectively. A novel endotherapy technique allowed injection of Dentamet® at low pressure directly into the vascular system of the tree and is currently under study for the promotion of resprouting in severely attacked trees. There are currently more than 700 ha of olive groves in Salento where this strategy is being applied to control X. f. subsp. pauca. These results collectively demonstrate an efficient, simple, low-cost, and environmentally sustainable strategy to control this pathogen in Salento.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2021 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2021 Tipo de documento: Article