Mechanism of control Alternaria alternata (Fries) Keissler with the fermentation filtrate of SZF2 and SZF7, microscopic observation showed that they could interfere the normal development of hyphae and conidiospores.

• 作用机制的研究表明SZF2和SZF7的发酵液能抑制烟草赤星病原菌(Alternaria alternata(Fries)Keissler)的菌丝生长和孢子萌发。