Production of iron-deficiency tolerant transgenic tobacco introduced with ferric reductase

将FRE1基因导入烟草。然而，没有获得比对照有显著还原酶活性的菌株。观察到导入基因的mRNA长度比FRE1短。这意味着它的转录起点在对照的下游，或者转录的终止在对照的上游。通过在FRE1基因中引入几种类型的点突变，转基因植株又在构建中。

FRE1 gene was introduced into tobacco. However, the strains which showed significant reductase activity than the control could not be obtained. The length of the mRNA of the introduced gene was observed shorter than the FRE1. This means its transcription starting point was the downstream than the control or the termination of the transcription was upper stream than the control. By introducing several types of point mutagenesis into FRE1 gene, the transgenic plants are again under construction.