柽柳bZIP基因调控耐盐相关基因的表达

Expression of Salt-Tolerant Genes Regulated by a bZIP Gene in Tamarix hispida Willd

本研究探讨了柽柳(Tamarixhispida)bZIP(basicleucine zipper)基因对抗逆基因表达的调控。我们比较了非盐胁迫和盐胁迫条件下非转基因和转bZIP基因植株的SOD、POD、ATPase、GST、LTP和LEA等基因表达量的变化。结果表明,在非胁迫条件下,bZIP转录因子可能直接调控了poxN1、TOBPXD、TOBLTP和ltp1基因的表达,而其他基因的表达可能不受bZIP转录因子的直接调控。在盐胁迫下,bZIP转录因子能够直接或间接地调控部分抗逆基因的表达,使它们的表达量显著增强。

The genes whose expression regulated by a basic leucine zipper（bZIP） gene from Tamarix hispida were investigated in the present study.Expression of stress-tolerant genes including SOD,POD,ATPase,GST, LTP and LEA were compared between bZIP transformed and non-transgenic plants under normal growth and salt stress condition.The results showed that under normal condition,poxN1,TOBPXD,TOBLTP and ltp1 genes may be directly regulated by bZIP,while the others may be not regulated by bZIP directly.Under salt stress bZIP regulated the expression of some stress resistance genes and enhance their expression level.