胶孢镰刀菌单孢分离子角变形成原因初探  

PRIMARY RESEARCH ON THE MECHANISM OF SECTOR FORMATION IN FUSARIUM SUBGLUTINANS SEGREGANTS

作　　者：卢小军[1] 章红[1] 舒石[1] 

机构地区：[1]中国农业大学生物学院,北京100094

出　　处：《菌物系统》2001年第2期283-285,共3页Mycosystema

基　　金：国家自然科学基金资助项目

摘　　要：SHAAN6-17 and 2-17-20, two moniliformin producing segregants of Fusarium subglutinans, were obtained by isolating single spores from SHAAN6 and 2-17 respectively. SHAAN6-17 forms sectors frequently but 2-17-20 does not. Ninety-five segregants were isolated from SHAAN6-17 by isolating single spores. All these segregants continued forming sectors and also maintained their ability of producing moniliformin. When cultivated under different pH, from 5.0 to 9.0, there were no significant differences among the segregants in sector formation. At last, by using CF11 cellulose method a kind of dsRNA was purified from SHAAN6-17, but this dsRNA was not purified from 2-17-20. It is suggested that the course of SHAAN6-17’s sector formation does not due to the mutations in its genome or the environmental pH, but maybe due to some kind of mycovirus.SHAAN6-17 and 2-17-20, two moniliformin producing segregants of Fusarium subglutinans, were obtained by isolating single spores from SHAAN6 and 2-17 respectively. SHAAN6-17 forms sectors frequently but 2-17-20 does not. Ninety-five segregants were isolated from SHAAN6-17 by isolating single spores. All these segregants continued forming sectors and also maintained their ability of producing moniliformin. When cultivated under different pH, from 5.0 to 9.0, there were no significant differences among the segregants in sector formation. At last, by using CF11 cellulose method a kind of dsRNA was purified from SHAAN6-17, but this dsRNA was not purified from 2-17-20. It is suggested that the course of SHAAN6-17's sector formation does not due to the mutations in its genome or the environmental pH, but maybe due to some kind of mycovirus.

关 键 词：胶孢镰刀菌 单孢分离子 角变现象 原因 真菌毒素 

分 类 号：Q939[生物学—微生物学]