香菇子实体生长发育过程中形态特征与生理特性研究

摘要

The morphological and physiological characteristics during the development of Lentinus edoolos fruit body were studied. Results showed that hyphae was loose before color-changing, and comparatively dense in hypha membrane, fungus- bud during the development of Lentinus edodos (Berk.) Sing fruit body. The content of reducing sugar, total soluble sugar, soluble protein and protein was high in hyphae membrane and fungus-bud but comparatively low in little mushroom, mature fruit body and degenerate bud. The content of reducing sugar, total soluble sugar, soluble protein and protein was falling as the fruit body developing. The possible reason causing fungus-bud degenerating was lack of sugar supplying, decrease of protein and low metabolizing activity. T-AOC (Total antioxidant capacity) of mature fruit body was lower. T-AOC of degenerate bud was low. The representation of fungus-bud degenerating was higher content of Malondialdehyde (MDA) and greater membrane damage, which was also the possible reason causing fungus-bud degenerating.%对香菇子实体生长发育过程中的形态特征与生理特性进行了研究,结果表明,在香菇子实体生长发育过程中,转色前的菌丝疏松,而菌膜、菇蕾的菌丝相对比较致密.菌膜、菇蕾中的还原糖、可溶性总糖、可溶性蛋白及蛋白质含量高,而幼菇、成熟菇、退化菇蕾中的还原糖、可溶性总糖、可溶性蛋白及蛋白质含量相对较低.随着子实体的生长,还原糖、总糖、可溶性蛋白及蛋白质含量逐渐下降,糖分供应量减少、蛋白质含量降低、代谢活性下降可能是造成菇蕾退化的原因.退化菇蕾的总抗氧化能力降低、丙二醛含量高、膜损伤程度加大是菇蕾退化的生理表现,也可能是菇蕾退化的原因.