Deteriorative fungi community in the soil of Chengdu ancient city heritage site and their control
The Donghuamen Site is an important urban heritage center in Chengdu,China,while the serious fungal corrosion occurred on the surface of the site during the field investigation,so it is urgent to study the fungal corrosion and its control.The soil of typical diseases on the surface of Donghuamen Site was collected and 16 strains were isolated.Through morphological observation and molecular sequencing,seven genera were identified,including Alternaria,Fusarium,Mortierella,Mucor,Penicillium,Talaromyces and Phoma,among which 6 strains of Alternaria,Fusarium,Mucor,Penicillium with high abundance and strong acid and enzyme producing capacity were selected as the key corrosion strains respectively.Chlorhexidine and nystatin notably inhibited the growth of key corrosive fungi Penicillium and Mucor(MIC≤15.625 mg/L),indicating their effective antifungal effect,while the inhibition DCOIT against Mucor was weak(MIC≥62.5 mg/L).These results provide a scientific basis for the prevention and control of fungal corrosion in the stone culture relics like the Donghumen Site in Chengdu.
万方数据
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