First report of Lecanosticta acicola on pine and non-pine hosts in Turkey

F. Oskay, M. Laas, M. Mullett, A. Lehtijärvi, H. T. Doğmuş-Lehtijärvi, S. Woodward, R. Drenkhan

Research output: Contribution to journalArticle

Abstract

Brown spot needle blight, caused by Lecanosticta acicola, is a serious disease of pines worldwide and has become of great concern in Europe over the last decade, with significantly increased outbreaks in pine forests. We examined native and non-native Pinaceae taxa (4 Cedrus and Pinus) in the Atatürk Arboretum, Istanbul, Turkey for the presence of L. acicola. Needles were sampled from trees at least twice between March 2017 and July 2018.
Symptomatic occurrence of the disease was confirmed by isolations, followed by molecular identification via sequencing of the ITS region. Lecanosticta acicola was isolated from symptomatic needles of 10 trees from 7 taxa (1 Cedrus, 6 Pinus). Molecular diagnostics of isolates confirmed the identification of L. acicola on Cedrus libani, Pinus sylvestris, P. nigra subsp. nigra, P. nigra subsp. laricio, P. nigra subsp. pallasiana, P. nigra subsp. pallasiana var. fastigiata and P. nigra subsp. pallasiana var. pallasiana f. şeneriana in the arboretum. This paper is the first report of L. acicola on C. libani and also the first report of the pathogen on a genus other than a Pinus spp.; it is also the first report of L. acicola occurring in Turkey. The
pathogen was clearly able to cause severe damage on native Turkish Pinus taxa, including P.
sylvestris and P. nigra subsp. pallasiana, and endangered endemic forms of the host in Turkey.
Original languageEnglish
JournalForest Pathology
Publication statusAccepted/In press - 16 Jul 2020

Keywords

  • Brown spot needle blight
  • Mycosphaerella dearnessii
  • Invasive pathogen
  • emerging disease
  • Cedrus libani
  • Anatolian black pine

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    Oskay, F., Laas, M., Mullett, M., Lehtijärvi, A., Doğmuş-Lehtijärvi, H. T., Woodward, S., & Drenkhan, R. (Accepted/In press). First report of Lecanosticta acicola on pine and non-pine hosts in Turkey. Forest Pathology.