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提取淡紫拟青霉NH-PL-03菌株的胞内、外多糖,分别以菌丝生长法与孢子萌发法研究其对尖孢镰刀菌的抑制效果。结果表明,淡紫拟青霉多糖对尖孢镰刀菌有明显抑制作用。在PDA平板上观察到不同程度的抑制现象,并在显微镜下观察到尖孢镰刀菌菌丝局部膨大,细胞质浓缩,细胞壁消解等现象。淡紫拟青霉多糖对尖孢镰刀菌孢子萌发有强烈抑制作用,并随多糖浓度的提高而增强。
The intracellular and extracellular polysaccharides of Paecilomyces lilacinus NH-PL-03 were extracted and their inhibitory effects on Fusarium oxysporum were studied by mycelial growth and spore germination respectively. The results showed that Paecilomyces lilacin against Fusarium oxysporum was significantly inhibited. Different degrees of inhibition were observed on PDA plates. Fusarium oxysporum mycelium was partially enlarged, cytoplasm concentrated and cell wall digestion were observed under microscope. Paecilomyces lilacin against spore germination Fusarium oxysporum spore germination had a strong inhibitory effect, and with the increase of polysaccharide concentration increased.