草菇耐低温菌株的诱变选育与鉴定
SELECTION FOR COLD-RESISTENT STRAIN BY COMPLEX MUTAGENESIS OF VOLVARIELLA VOLVACEA AND IDENTIFICATION OF THE STRAIN
韩业君 曹晖 陈明杰 潘迎捷
摘 要:在草菇V23原生质体形成和再生的最佳条件下制备原生质体.分别用紫外线(UV),60Co-γ射线,硫酸二乙酯(DES)对原生质体进行复合诱变.初筛、复筛获得耐常规低温(4℃)10d的菌株VH.栽培实验证明:VH在26℃下的生物学效率明显优于V23(CK),且差异极显著.同工酶分析表明:VH过氧化物同工酶,酯酶同工酶谱带数量及酶活性均发生变化;RAPD实验显示:VH相对于V23的变异系数为0.213.VH菇体正常,味道鲜美,食用后无毒副作用.氨基酸组成分析表明:除总氨基酸和谷氨酸含量VH高于V23外,其它氨基酸差异不明显.VH遗传性状稳定,是具有潜在应用价值的优良菌株.
关键词:原生质体,同工酶分析,氨基酸
分类号:Q939.96 文献标识码:A
文章编号:1672-6472(2004)03-0417-0422
基金项目:上海市农委科技兴农重点项目资助(农科攻字(98)第01-14号)
作者简介:陈明杰,通讯作者:mjchen@mail.china.com
作者单位:韩业君(南京农业大学生命科学学院微生物系,南京,210095;农业部食用菌遗传育种重点开放实验室,上海市农业遗传育种重点实验室;上海市农业科学院食用菌研究所,上海,201106)
曹晖(农业部食用菌遗传育种重点开放实验室,上海市农业遗传育种重点实验室;上海市农业科学院食用菌研究所,上海,201106)
陈明杰(农业部食用菌遗传育种重点开放实验室,上海市农业遗传育种重点实验室;上海市农业科学院食用菌研究所,上海,201106)
潘迎捷(农业部食用菌遗传育种重点开放实验室,上海市农业遗传育种重点实验室;上海市农业科学院食用菌研究所,上海,201106)
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菌物学报
MYCOSYSTEMA
2004 Vol.23 No.3 P.417-422