Publications by authors named "Giuseppa Rosaria Leonardi"

Article Synopsis
  • Bay laurel, a significant Mediterranean tree native to Italy, is experiencing severe damage from stem blight and internal necrosis connected to ambrosia beetle infestations in Sicily since 2021.
  • Research identified a new fungal species responsible for these issues and confirmed its pathogenicity through tests on potted bay laurel plants.
  • This finding marks the first report of a new pathogen linked to the invasive ambrosia beetle affecting bay laurel, adding to the understanding of plant diseases in the region.
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Pestalotioid fungi were isolated in pure culture from symptomatic plants of , , (marketed as ""), Myrtuscommunissubsp.tarentina, and M.communisvar.

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Mal secco, caused by is an economically important fungal vascular disease in citrus-growing countries of the Mediterranean basin. Preventing fungal infections usually requires a high number of copper treatments but European legislation imposes the minimization of their accumulation in soil. In our study, biological control agents (BCAs) and a plant resistance inducer (PRI), tested in four different experiments on citrus seedlings under controlled conditions, have resulted in promising strategies to control mal secco disease.

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The effectiveness of biological commercial products based on strains was evaluated through in vitro and in vivo experiments against . The activity of bacterial cells, volatile organic compounds (VOCs), and culture filtrates of bacteria were tested in vitro against different isolates of . .

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Passion fruit ( Sims.) is an ever-increasing interest crop in Italy because it is mainly cultivated for its edible fruit and, secondly, as an ornamental evergreen climber. During the summer of 2020, two-year-old plants of purple passion fruit in one of the most important expanding production areas of Sicily (southern Italy) showed symptoms of yellowing, wilting, and vascular discoloration.

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