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Journals / Anadolu Orman Araştırmaları Dergisi / 2024 / Cilt: 10 Sayı: 2

Pathogenicity of the Sydowia polyspora originating from different hosts on Pinus brutia in Türkiye

Türkiye'de Farklı Konukçulardan Elde Edilen Sydowia polyspora izolatlarının Pinus brutia Üzerindeki Patojenitesi

Refika Ceyda Beram(PAMUKKALE ÜNİVERSİTESİ)0000-0002-1203-2910
Pages
36–40
Publication Date
2024-12-29
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

Results The results showed that 7 out of 10 tested isolates were pathogenic on P. brutia seedlings and successfully colonized the living heartwood tissue.

📌 3 Key Takeaways

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Objective & Hypothesis:Background and aims Sydowia polyspora is a significant fungus associated with seasonal needle necrosis, particularly on Abies spp. and Pinus spp. in Europe and North America.
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Key Findings & Data:Results The results showed that 7 out of 10 tested isolates were pathogenic on P. brutia seedlings and successfully colonized the living heartwood tissue.
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Conclusion & Impact:The fungal pathogen was successfully re-isolated from symptomatic tissues, and no symptoms were observed in the control plants.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Konifer · mevcut sezon ibre nekrozu · Sydowia polyspora

Abstract

Background and aims Sydowia polyspora is a significant fungus associated with seasonal needle necrosis, particularly on Abies spp. and Pinus spp. in Europe and North America. Pinus brutia is a species widespread in the Mediterranean basin with high economic and ecological value. This study aimed to determine the susceptibility of P. brutia seedlings in Türkiye to local S. polyspora isolates and to investigate the virulence differences among isolates obtained from different hosts. Methods S. polyspora isolates from various hosts were inoculated into the shoots of two-year-old P. brutia seedlings. The seedlings were monitored in comparison with a control group, and pathogenicity indicators such as lesion length were recorded. Results The results showed that 7 out of 10 tested isolates were pathogenic on P. brutia seedlings and successfully colonized the living heartwood tissue. Isolates from Pinus pinea were found to be pathogenic on P. brutia, and isolates obtained from shoots caused longer lesions in hosts. Additionally, isolates from symptomatic trees exhibited higher virulence compared to those from asymptomatic trees. Isolates from P. brutia exhibited higher virulence compared to isolates from Pinus nigra and P. pinea. Conclusions P. brutia seedlings are highly susceptible to local S. polyspora isolates, posing a potential threat to the region's forest ecosystems. The fungal pathogen was successfully re-isolated from symptomatic tissues, and no symptoms were observed in the control plants.

Özet

Giriş ve Hedefler Sydowia polyspora, Avrupa ve Kuzey Amerika'da özellikle Abies spp. ve Pinus spp. üzerinde mevsimsel ibre nekrozu ile ilişkili önemli bir fungustur. Pinus brutia, Akdeniz havzasında yaygın olarak bulunan ve yüksek ekonomik ve ekolojik değere sahip bir türdür. Bu çalışmada, Türkiye'deki P. brutia fidanlarının yerel S. polyspora izolatlarına duyarlılığını belirlemek ve farklı konukçulardan elde edilen izolatlar arasındaki virülans farklılıklarını araştırmak amaçlanmıştır. Yöntemler Farklı konukçulardan izole edilen S. polyspora izolatları, iki yaşındaki P. brutia fidanlarının sürgünlerine inokule edilmiştir. Fidanlar, kontrol grubuyla karşılaştırmalı olarak izlenmiş ve lezyon uzunluğu gibi patojenisite göstergeleri kaydedilmiştir. Bulgular Çalışma sonuçları, test edilen 10 izolatın 7'sinin P. brutia fidanlarında patojenik olduğunu ve canlı öz odun dokusunda başarılı bir şekilde kolonize olabildiğini göstermiştir. Pinus pinea'dan elde edilen izolatların P. brutia üzerinde patojenik olduğu, sürgünlerden elde edilen izolatların ise konukçularda daha uzun lezyonlar oluşturduğu tespit edilmiştir. Ayrıca, semptomatik ağaçlardan elde edilen izolatların, semptomatik olmayan ağaçlardan elde edilenlere göre daha yüksek virülans gösterdiği belirlenmiştir. P. brutia'dan elde edilen izolatlar, Pinus nigra ve P. pinea’dan elde edilen izolatlara göre daha yüksek virülans göstermiştir. Sonuçlar P. brutia fidanları, yerel S. polyspora izolatlarına karşı oldukça duyarlıdır ve bu durum, bölgedeki orman ekosistemleri için potansiyel bir tehdit oluşturmaktadır. Fungal etmen, semptomatik dokulardan başarılı bir şekilde yeniden izole edilmiştir. Kontrol bitkilerinde herhangi bir semptom gözlenmemiştir.

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Cite This Article

Beram, R. C. (2024). Pathogenicity of the Sydowia polyspora originating from different hosts on Pinus brutia in Türkiye. Anadolu Orman Araştırmaları Dergisi, Cilt: 10 Sayı: 2, 36–40. https://doi.org/10.53516/ajfr.1511176

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