Forest Pathology (2021) 51 (1 - e12650)

Nebai Mesanza, Rosa Raposo, Margarita Elvira-Recuenco, Irene Barnes, Ariska van der Nest, Mónica Hernández, Maria Teresa Pascual, Iskander Barrena, Unai San Martín, Alejandro Cantero, Laura Hernandez-Escribano and Eugenia Iturritxa (2021)
New hosts for Lecanosticta acicola and Dothistroma septosporum in newly established arboreta in Spain
Forest Pathology 51 (1 - e12650)
Abstract: 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).
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Rosa Raposo, Irene Barnes, Eugenia Iturritxa

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
population dynamics/ epidemiology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Lecanosticta acicola	Pine (Pinus)	Spain (continental)
	Dothistroma septosporum	Pine (Pinus)	Spain (continental)