TAILIEUCHUNG - Effects of pH and aluminium ion concentration on spore germination and growth of some soil fungi

Concentrations of three aluminium compounds significantly affected the mycelial extension of Trichoderma viride with low pH values growing on agar media, and the largest effect was recorded with aluminium chloride. Experiments in this work showed that there were significant relationships between Al concentration and pH in the Al inhibition of fungal activity on agar media. | Turk J Biol 26 (2002) 99-107 © TÜB‹TAK Effects of pH and Aluminium Ion Concentration on Spore Germination and Growth of Some Soil Fungi fiükrü DURSUN*, Lynne BODDY Cardiff School of Biosciences, Cardiff University, Cardiff, UK Juliet C. FRANKLAND Institute of Terrestrial Ecology, Merlewood Research Station, Grange-over-Sands, Cumbria, UK Received: Abstract: Concentrations of three aluminium compounds significantly affected the mycelial extension of Trichoderma viride with low pH values growing on agar media, and the largest effect was recorded with aluminium chloride. Experiments in this work showed that there were significant relationships between Al concentration and pH in the Al inhibition of fungal activity on agar media. Different effects of aluminium concentration on the mycelial extension rate of eight fungal species inoculated on pH gradient plates were recorded. The spore germination of Phoma exigua and Cladosporium herbarum was reduced by increasing aluminium and acidity, and low pH increased the inhibitory effect of aluminium. Aluminium has an inhibitory effect itself at low pH and it may have an important effect on soil chemistry and microbial activity in the soils where air pollution is high. Key Words: Aluminium, buffering capacity, fungi germination, inhibition, pH. Baz› Toprak Mantarlar›n›n Spor Çimlenmesi ve Geliflimi Üzerine pH ve Alüminyum ‹yon Konsantrasyonunun Etkisi Özet: Üç alüminyum bilefli¤inin artan konsantrasyonlar› düflük pH de¤erlerinde agar ortam›nda yetiflen T. Viride’nin miselyum geliflimini önemli ölçüde etkiledi ve en büyük etki alüminyum klorür ile tesbit edildi. Bu çal›flmadaki deneyler agar medyadaki fungal aktivitenin inhibisyonu üzerinde artan Al konsantrasyonu ile pH’n›n istatistiksel olarak iliflkili oldu¤unu göstermifltir. pH dereceli ortam üzerine inoküle edilen 8 fungi türünün miselyum geliflimi üzerine alüminyumun farkl› etkileri tespit edilmifltir. Phoma exigua ve Cladosporium herbarum sporlar›n›n .

• Sinh học
• Buffering capacity
• Fungi germination
• Trichoderma viride
• Aluminium chloride
• Fungal activity on agar media
• Lime buffer capacity
• Lime requirement
• pH buffering capacity
• Cassava production
• Soil pHBC
• Al related components
• Readily exchangeable K
• Specific K sites
• Energy of exchange
• K index