A historical outbreak of needle blight disease was recorded during 2018 to 2019 in plantations of Pinus radiata and Pinus nigra in the North of Spain. The main pathogens involved in this historical outbreak were identified as Lecanosticta acicola and Dothistroma septosporum. Recently, a variety of tree species in three arboreta planted between 2011 and 2013 in the Basque Country as part of the European project REINFFORCE were showing symptoms of needle blight and defoliation. The aim of this study was to determine which pine species were affected with these pathogens. Tree species sampled included several provenances of P. brutia, P. elliottii, P. nigra, P. pinaster, P. pinea, P. ponderosa, P. sylvestris and P. taeda. Using molecular identification methods, Lecanosticta acicola was confirmed infecting Pinus brutia (Provenance: Alexandropolis, Greece and var. eldarica, Crimea) and represents a new host species for this pathogen. Pinus elliottii (Provenance: Georgia, USA) and P. ponderosa (Provenance: Central California, USA) are new host reports of L. acicola for Spain. Dothistroma septosporum was found for the first time on P. brutia (Provenance: Marmaris, Turkey) and P. ponderosa (Provenance: Oregon, USA) in Spain and was also detected infecting P. nigra (Provenance: Sologne Vayrières, France).

中文翻译：

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西班牙新成立的arboreta的Lecanosticta acicola和Dothistroma septosporum的新寄主

西班牙北部的辐射松和黑松人工林于2018年至2019年记录了针叶枯病的历史爆发。涉及此历史性疫情的主要病原体为Lecanosticta acicola和Dothistroma septosporum。最近，作为欧洲REINFFORCE项目的一部分，于2011年至2013年在巴斯克地区种植的3个乔木中的各种树种均显示出针叶枯萎和脱叶的症状。这项研究的目的是确定哪些松树物种受到这些病原体的影响。树种取样的包括若干种源P. brutia，湿地松，欧洲黑杨，P. pinaster，P. pinea，P. pokerosa，P. sylvestris和P. taeda。使用分子鉴定方法，确认了Lecanosticta acicola感染了Pinus brutia（来源：希腊的Alexandropolis和克里米亚的var.eldarica），并代表了这种病原体的新宿主。Pinus elliottii（来源：美国佐治亚州）和P.unkerosa（来源：美国中部加利福尼亚州）是西班牙a.cola的新宿主报告。Dothistroma septosporum被发现的第一次P. brutia（出处：马尔马里斯，土耳其）和西黄松（出处：俄勒冈州，美国）在西班牙和也被检测出感染欧洲黑杨（出处：索洛涅Vayrières，法国）。