目前人工驯化成功的食药用菌株有香菇、银耳、木耳、蘑菇、侧耳、草菇、灵芝、金针菇、竹荪等十几种菌类,各种菌株的生理特性与它的生理过程有着共同之处也有不同之处。它们之间受自然界和人为某些物理因素刺激影响,易产生菌株基因型突变性变异,以及菌丝体内细胞分裂过程功能变异等。但是微生物基因突变是微生物变异的主要来源,也是微生物进化的主要因素。基因突变包括自然突变和人工诱变。自然突变的发生过程通常由于有一定外 At present, artificial and domesticated edible and medicinal strains have more than ten kinds of mushrooms, fungus, fungus, mushrooms, Pleurotus ostreatus, mushroom, Ganoderma lucidum, mushroom, Dictyophora and other bacteria, the physiological characteristics of various strains and its physiological processes have a common There are also differences. Affected by the physical and man-made physical factors between them, they are easy to produce mutational mutations in the genotypes of the strains and functional variations in the process of cell division in mycelia. However, microbial genetic mutation is the main source of microbial variation, but also the main factor of microbial evolution. Mutations include natural mutations and artificial mutations. Natural mutations occur usually due to a certain process