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

Funda Oskay* (Corresponding Author), Marili Laas, Martin Mullett, Asko Lehtijärvi, Hatice Tuğba Doğmuş-Lehtijärvi, Steve Woodward, Rein Drenkhan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

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
Article numbere12654
Number of pages8
JournalForest Pathology
Volume50
Issue number6
Early online date15 Nov 2020
DOIs
Publication statusPublished - 22 Dec 2020

Keywords

  • Anatolian black pine
  • brown spot needle blight
  • Cedrus libani
  • emerging disease
  • invasive pathogen
  • Mycosphaerella dearnessii

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