Chen Yen-Ting, Ko Wen-Hsiung
Department of Plant Pathology, National Chung Hsing University, Taichung, Taiwan.
Bot Stud. 2014 Dec;55(1):39. doi: 10.1186/1999-3110-55-39. Epub 2014 Jul 22.
A fungus identified as Eupenicillium brefeldianum was isolated from soil amended with vegetable tissues.
When grown in liquid medium prepared from the same vegetable tissues, E. brefeldianum produced a substance capable of preventing disease development of leaf spots of mustard cabbage caused by Alternaria brassicicola and inhibiting the germination of A. brassicicola conidia. The inhibitory substance was fungicidal and was very stable under high temperature and extreme pH. It was soluble in polar solvents but not soluble in non-polar solvents, and did not have charges on its molecule. This is the first discovery of the production of a fungicidal substance by this fungus.
Results from this study suggest the possession of a strong competitive saprophytic ability by E. brefeldianum, which in turn may explain the widespread occurrence of this fungus in soils.
从添加了蔬菜组织的土壤中分离出一种被鉴定为布氏拟青霉的真菌。
当在由相同蔬菜组织制备的液体培养基中生长时，布氏拟青霉产生了一种能够预防由芸苔链格孢引起的芥菜叶斑病发展并抑制芸苔链格孢分生孢子萌发的物质。该抑制物质具有杀真菌作用，并且在高温和极端pH条件下非常稳定。它可溶于极性溶剂但不溶于非极性溶剂，并且其分子不带电荷。这是首次发现这种真菌产生杀真菌物质。
本研究结果表明布氏拟青霉具有很强的竞争性腐生能力，这反过来可能解释了这种真菌在土壤中广泛存在的原因。
