Balestra Giorgio Mariano, Giordani Mauro, Coppa Eleonora, Schiavi Daniele, Astolfi Stefania
Department of Agriculture and Forest Sciences (DAFNE), University of Tuscia, 01100 Viterbo, Italy.
Plants (Basel). 2025 Sep 11;14(18):2834. doi: 10.3390/plants14182834.
Olive Quick Decline Syndrome (OQDS), caused by the bacterium , subsp. , has devastated olive groves in Italy's Apulia region since 2013. Despite significant scientific progress, the solution remains elusive. This study investigated the link between olive tree nutritional status and OQDS severity, aiming to uncover potential mitigation strategies. We analyzed leaf nutrient profiles from olive trees in naturally infected areas, categorizing them as asymptomatic (AS), mildly symptomatic (MS), or severely symptomatic (SS). Distinct nutritional differences were observed across these groups. The integration of univariate statistical analysis, hierarchical clustering, and Principal Component Analysis (PCA) revealed a complex relationship between plant nutritional status and disease progression. Notably, the PCA results highlighted the importance of sulfur metabolism, suggesting its role in olive trees' defense mechanisms and metabolic responses to OQDS. These results provide promising evidence with potential application for dealing with OQDS, and the question of whether plant nutritional status plays a role in the development of OQDS symptoms deserves to be further examined in depth.
油橄榄快速衰退综合征（OQDS）由 亚种细菌引起，自2013年以来已对意大利普利亚地区的油橄榄园造成了严重破坏。尽管取得了重大科学进展，但解决方案仍然难以捉摸。本研究调查了油橄榄树营养状况与OQDS严重程度之间的联系，旨在找出潜在的缓解策略。我们分析了自然感染地区油橄榄树的叶片养分状况，将它们分为无症状（AS）、轻度症状（MS）或重度症状（SS）。在这些组中观察到了明显的营养差异。单变量统计分析、层次聚类和主成分分析（PCA）的综合结果揭示了植物营养状况与疾病进展之间的复杂关系。值得注意的是，PCA结果突出了硫代谢的重要性，表明其在油橄榄树防御机制和对OQDS的代谢反应中的作用。这些结果为应对OQDS提供了有前景的证据，植物营养状况是否在OQDS症状发展中起作用这一问题值得进一步深入研究。
