【摘要】 试验表明:1.0mg·L-1的Na2SeO3可以提高麦苗地上部GSH Px的活性。试验选用抑制效果相似的转录抑制剂AMD和翻译抑制剂CHI,分别或共同与1.0mg·L-1的Na2SeO3配合处理麦苗,都能抑制由Na2SeO3诱导的GSH Px的活性,72h后其抑制效果相似,差异不显著;而不和Na2SeO3配合的处理,差异却十分显著。试验表明:Na2SeO3对GSH Px的合成的诱导除在转录或翻译水平上外,还存在其他途径。更多还原

【Abstract】 Treatment of wheat seedlings with Na₂SeO₃ at 1.0 mg/L increased the activity of GSH-Px （glutathione peroxidase） . Na₂SeO₃ （1.0 mg/L） combined with the transcription inhibitor Actinomycin D （AMD） or the translation inhibitor Cyclonheximede （CHI） or both inhibited Na₂SeO₃-induced GSH-Px activity with no significant difference between them as determined 72 h after the treatments. Significant difference was observed between the two inhibitors in their inhibitory effect when they were used alone, without combination with Na₂SeO₃. The experiment showed that Na₂SeO₃-induced GSH-Px biosynthesis happens before translation, not after it and that other pathway of induction may exist addition to the known pathways on the transcription and translation levels.更多还原