硒与霉菌相互影响的研究

研究了高硒对镰刀菌的生长抑制作用和霉菌生长繁殖时对硒的消耗,并调查了自然高硒区粮食中霉菌污染情况.结果表明,20 mg/L和40 mg/L的硒对木贼镰刀菌、半裸镰刀菌、拟枝孢镰刀菌、三线镰刀菌、禾谷镰刀菌、串珠镰刀菌均有明显的抑制作用;但自然高硒并不能减少粮食中霉菌的污染,而且镰刀菌中产毒菌株达78%.镰刀菌属、青霉属和曲霉属、其它腐生霉菌对粮食中的硒消耗明显,最高达47%,提示克山病、大骨节病区原本缺硒的贮粮在霉菌的作用下变得更加缺硒.在低硒和真菌毒素的双重作用下,使发病加剧.

Interaction between Selenium and Mildew

In this paper,inhibiting effects of high dose selenium on Fusarium and the consumption of selenium to the growth and propagation of mildew were studied.And ahe mildew contamination of grain was investigated in natural high selenium area.The result showed that the two selenium contents,20 mg/L arid 40 mg/L,were both found obviously inhibiting effects on the growth of F.equiseti,F.semitectunt,F.sporotrich inides,F.tricinctum,F.graminearum and F.mortiliforme.But high dose selenium couldn''t decrease mildew contamination of grain in nature and the toxigenicty strain reached 78% in Fusurium.The consumption of grain selenium by Fusarium,Perticilliztm,Aspergilltts and other saprophyticus mildews was even 47%,which hinted that selenium shortage of grain would been increased in the area of Keshan Disease and Keschin-Beck.And the state was worsen with the effects of selenium shortage and mycotoxin.