Browsing by Author "Ciftci, Osman"

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Citation - WoS: 5
Citation - Scopus: 5
First Report of Neoscytalidium Dimidiatum Causing Dieback, Shoot Blight, and Branch Canker of Willow Trees in Turkey
(Amer Phytopathological Soc, 2019) Turkolmez, Sahimerdan; Dervis, Sibel; Ciftci, Osman; Serce, Cigdem Ulubas; Turkohmez, Cemile Gulden; Dikilitas, Murat
Citation - WoS: 14
Citation - Scopus: 16
First Report of Neoscytalidium Dimidiatum Causing Shoot and Needle Blight of Pines (Pinus Spp.) in Turkey
(Amer Phytopathological Soc, 2019) Turkolmez, Sahimerdan; Dervis, Sibel; Ciftci, Osman; Dikilitas, Murat
Lasiodiplodia Theobromae and Neoscytalidium Dimidiatum Associated with Grafted Walnut (Juglans Regia L.) Decline in Turkey
(Springer Heidelberg, 2023) Ozer, Goksel; Turkolmez, Sahimerdan; Dervis, Sibel; Ciftci, Osman
Surveys of canker diseases in 26 walnut orchards were conducted in the southeastern Turkish provinces of Batman, Diyarbakir, and Sanliurfa in 2020. Decline symptoms on trees were most severe in the trunks of grafted trees grown on unproductive local rootstocks with Chandler and Franquette scions throughout the surveyed areas, and samples were taken from those trees. Lasiodiplodia theobromae was identified from the cankers on the trees of the seven orchards, while Neoscytalidium dimidiatum was identified from the other 19 orchards based on morphological characteristics. DNA sequencing analysis of 10 representative isolates using the ITS1-5.8S-ITS2 (ITS), the large subunit (LSU), and the translation elongation factor 1-alpha (EF-1 alpha) genes confirmed the identification of the causal fungi. Pathogenicity tests on 2 year-old Chandler seedlings revealed that L. theobromae and N. dimidiatum produced lesion length averages of 7-8 cm and 15-25 cm after 3 weeks of stem-inoculation, respectively. Koch's postulates were confirmed by successfully reisolating the fungi only from plants inoculated. This is the first study to document L. theobromae as the causal agent of walnut tree decline and cankers in Turkey.
Citation - WoS: 23
Citation - Scopus: 25
New disease caused by Neoscytalidium dimidiatum devastates tomatoes (Solarium lycopersicum) in Turkey
(ELSEVIER SCI LTD, 2019) Turkolmez, Sahimerdan; Dervis, Sibel; Ciftci, Osman; Serce, Cigdem Ulubas; Dikilitas, Murat
A novel disease of tomato (Solarium lycopersicum L.) was observed in the Southeast Anatolia Region of Turkey. Symptoms were blight of all aerial parts of the plant, including stems, branches, leaves, petioles, flowers and fruits, defoliation, root rot, inner stem necrosis, and plant death. The disease was found in 13.9% of surveyed fields, with an incidence varying from 3% to nearly 75% (average 21.2%) of the plants in symptomatic fields. The average severity of blight on stem in fields with the symptomatic plant surveyed was 1.4%. A Botryosphaeriaceae species, identified as Neoscytalidium dimidiatum (Penz.) Crous & Slippers using morphological and cultural features, was consistently isolated from symptomatic roots, inner stems, and blighted leaves, shoots, stems, fruits and flowers. The partial nucleotide sequence data for three gene loci, including nuclear rDNA internal transcribed spacer (ITS), large subunit (LSU) genes and the translation elongation factor 1-alpha (TEF-1 alpha), confirmed the morphological identification. Furthermore, sequence data of actin genes from N. dimidiatwn was, for the first time, deposited to the GenBank. Koch's postulates were fulfilled by testing the susceptibility of different tomato tissues (leaves, stems, inner stems and roots of tomato seedlings, and detached tomato fruits and flowers) to N. dimidiatum inoculation. To our knowledge, this is the first report of N. dimidiatum on tomato.