Early reactions of Arabidopsis thaliana to phenanthrene polycyclic aromatic hydrocarbon stress

被引：0
|
作者：
刘泓
崔波
叶媛蓓
唐玲
王宗华
机构：
[1] 福建农林大学资源与环境学院
[2] 福建农林大学生命科学学院
来源：
中国生态农业学报(中英文) | 2009年 / 05期
关键词：
拟南芥; 多环芳烃; 菲; 氧化胁迫; mRNA表达;
D O I：
暂无
中图分类号：
Q945.78 [协迫生理学];
学科分类号：
0903 ;
摘要：
选用模式植物拟南芥及3环的多环芳烃菲为材料,研究了抗氧化酶和膜保护系统的早期响应及胁迫下相关基因mRNA的差异表达,结果表明:菲胁迫12h时,拟南芥叶片超氧化物歧化酶(SOD)及过氧化物酶(POD)活性明显高于对照,清除超氧阴离子自由基(O?2?)及过量H2O2的机制已启动。胁迫72h时H2O2含量出现累积现象,但膜系统仍未受到膜脂过氧化作用的明显伤害。随着胁迫时间的延长,拟南芥的光合作用无论在mRNA水平还是细胞水平都受到影响。本研究揭示了氧化胁迫响应是植物对多环芳烃胁迫的重要早期应激反应。
引用
收藏
页码：949 / 953
页数：5
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