An integrated strategy for pathogen surveillance unveiled Xylella fastidiosa ST1 outbreak in hidden agricultural compartments in the Apulia region (Southern Italy)

IF 1.7 3区 农林科学 Q2 AGRONOMY European Journal of Plant Pathology Pub Date : 2024-09-10 DOI:10.1007/s10658-024-02945-7
Daniele Cornara, Donato Boscia, Giusy D’Attoma, Michele Digiaro, Angela Maria Ligorio, Giuliana Loconsole, Serena Anna Minutillo, Vito Montilon, Francesco Palmisano, Gianvito Ragone, Maria Rosaria Silletti, Vincenzo Verrastro, Claudio Zaza, Maria Saponari
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Abstract

Annual surveillance programs for the plant pathogenic bacterium Xylella fastidiosa are implemented in Europe as part of the preventive phytosanitary strategies enforced to face the emergence of the detrimental infections reported in olives in southern Italy. The programs include inspections and sampling of host plants by prioritizing those showing suspicious symptoms or those known to be highly susceptible to different strains and subspecies of the bacterium. In the framework of these programs numerous outbreaks have been unraveled, with several strains and subspecies found to infect a relatively large host range in France, Spain, Portugal and Italy. Here we report the results of an integrated surveillance approach implemented in the Apulia Region (southern Italy), where a conventional survey program on host plants is complemented by monitoring and testing for X. fastidiosa the insect vectors. In the framework of this program, bacterium-positive spittlebugs were intercepted in the Xylella-free area of the region, close to one of the most relevant Italian table grape production district. Such findings prompted further investigation to identify the bacterial reservoir in the host plants. Almond and grapevine were found to be the most frequently infected hosts, with infections caused by isolates of X. fastidiosa subspecies fastidiosa ST1. Investigations are ongoing to assess the extent and history of the outbreak, to assess and estimate the potential impacts, and define the best options for its containment.

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病原体监测综合战略揭示了阿普利亚地区(意大利南部)隐蔽农业区爆发的快疫木球菌 ST1疫情
针对植物病原菌 Xylella fastidiosa,欧洲实施了年度监测计划,作为预防性植物检疫战略的一部分,以应对意大利南部橄榄中出现的有害感染。这些计划包括对寄主植物进行检查和取样,优先检查那些出现可疑症状的植物或已知对不同菌株和亚种极易感染的植物。在这些计划的框架内,已经揭开了许多疫情爆发的真相,在法国、西班牙、葡萄牙和意大利的相对较大的寄主范围内发现了几种菌株和亚种。在此,我们报告了在阿普利亚大区(意大利南部)实施的综合监控方法的结果,在该地区,寄主植物的常规调查计划与昆虫载体 X. fastidiosa 的监控和检测相辅相成。在该计划的框架内,在该地区的无Xylella地区截获了细菌阳性的唾液蝽,该地区靠近意大利最重要的鲜食葡萄生产区之一。这些发现推动了进一步的调查,以确定寄主植物中的细菌库。发现杏树和葡萄树是最常感染的寄主,感染由 X. fastidiosa 亚种 fastidiosa ST1 分离物引起。目前正在进行调查,以评估疫情的范围和历史,评估和估计潜在的影响,并确定遏制疫情的最佳方案。
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来源期刊
European Journal of Plant Pathology
European Journal of Plant Pathology 农林科学-农艺学
CiteScore
4.20
自引率
5.60%
发文量
183
审稿时长
3 months
期刊介绍: The European Journal of Plant Pathology is an international journal publishing original articles in English dealing with fundamental and applied aspects of plant pathology; considering disease in agricultural and horticultural crops, forestry, and in natural plant populations. The types of articles published are :Original Research at the molecular, physiological, whole-plant and population levels; Mini-reviews on topics which are timely and of global rather than national or regional significance; Short Communications for important research findings that can be presented in an abbreviated format; and Letters-to-the-Editor, where these raise issues related to articles previously published in the journal. Submissions relating to disease vector biology and integrated crop protection are welcome. However, routine screenings of plant protection products, varietal trials for disease resistance, and biological control agents are not published in the journal unless framed in the context of strategic approaches to disease management.
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