Genetic Analysis of Distorted Segregation Ratio of Mating Types AmongBasidiospores in Lentinula edodes  

作　　者：CHENG Shui-ming LIN Fan-xue 

机构地区：[1]College of Life Science and Engineering, Huanggang Normal University, Huanggang 438000, P.R.China [2]State Key Laboratory of Agricultural Microbiology, Institute of Applied Mycology, Huazhong Agricultural University, Wuhan 430070, P. R. China

出　　处：《Agricultural Sciences in China》2008年第4期415-422,共8页中国农业科学（英文版）

摘　　要：This study prepared 17 strains of Lentinula edodes, including wild and cultivated strains as materials, and statistically analyzed the ratios of spores from different aspects via mating types＇ analysis and the OWE-SOJ technique. The results from this study first systematically identified skewed expected distribution of mating-type factors segregation in Lentinula edodes spores has commonly statistical meanings in wild and cultivated strains. Genetic analysis of positive and negative parental-recombined fruiting showed that the nuclear type of F1 progeny spores among those strains segregated through theoretical distribution mainly depended on the combined state of parental dikaryons, and the predominant spores were those with the mating type identical to the dikaryotic parent, indicating that the genetic basis of segregation distortion of spores is different from that of protoplast monokaryons in which the B factor takes predominant responsibility for that phenomenon, and it cooperates A factor with B factor to influence the ratio of spores.This study prepared 17 strains of Lentinula edodes, including wild and cultivated strains as materials, and statistically analyzed the ratios of spores from different aspects via mating types＇ analysis and the OWE-SOJ technique. The results from this study first systematically identified skewed expected distribution of mating-type factors segregation in Lentinula edodes spores has commonly statistical meanings in wild and cultivated strains. Genetic analysis of positive and negative parental-recombined fruiting showed that the nuclear type of F1 progeny spores among those strains segregated through theoretical distribution mainly depended on the combined state of parental dikaryons, and the predominant spores were those with the mating type identical to the dikaryotic parent, indicating that the genetic basis of segregation distortion of spores is different from that of protoplast monokaryons in which the B factor takes predominant responsibility for that phenomenon, and it cooperates A factor with B factor to influence the ratio of spores.

关 键 词：mating-type factor BASIDIOSPORE Lentinula edodes segregation distortion 

分 类 号：S646[农业科学—蔬菜学]