COŞKUN KÖSE
(İstanbul Üniversitesi, İstanbul Türkiye)
SAİP NAMİ KARTAL
(İstanbul Üniversitesi, İstanbul Türkiye)
Yıl: 2010Cilt: 34Sayı: 3ISSN: 1300-011X / 1303-6173Sayfa Aralığı: 181 - 190İngilizce

67 0
Tolerance of brown-rot and dry-rot fungi to CCA and ACQ wood preservatives
Bakır, günümüzde ağaç malzemenin korunması amacıyla kullanılan en önemli biyositlerden biridir. Arsenik içermeyen bakır esaslı emprenye maddelerinin kullanımına yönelik ilginin artması, bakıra tolerans gösteren mantarlarla yapılan çalışmaların da artmasına neden olmuştur. Esmer çürüklük mantarlarının oksalik asit üretmesi bakır toleransını açıklayan bir mekanizma olarak ileri sürülmektedir. Bu çalışmada, esmer çürüklük mantarları, Postia placenta, Gloeophyllum trabeum, Tyromyces palustris ve Serpula lacrymans’ın iki farklı ırkı tarafından ACQ ve CCA emprenye maddeleriyle işlem görmüş sarıçam ve kavak odunlarında meydana gelen oksalik asit oluşumu ve bakır kayıpları incelenmiştir. Genel olarak mantarların etkileri sonucu meydana gelen ağırlık kaybı, oksalik asit oluşumu ve bakır kayıpları arasında doğrusal bir ilişki bulunamamıştır. Ancak, T. palustris ve S. lacrymans mantarının bir ırkı emprenyeli örneklerde bakıra tolerans göstermiştir. P. placenta ACQ ile emprenye edilmiş örneklerde önemli ağırlık kayıpları meydana getirmiştir. G. trabeum tarafından çok az miktarda oksalik asit üretilmiş, ACQ ve CCA emprenye maddeleri bu mantarın gelişimini engellemiştir. Sonuç olarak, ağaç türü ve emprenye maddesi formülasyonunun mantarların oksalik asit üretimlerini, oluşturdukları ağırlık kayıplarını ve bakır toleransını etkilediği saptanmıştır.
Fen > Mühendislik > Orman Mühendisliği
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