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A cDNA library was made by subtractive hybridization of cDNA from non-harvested and harvested alfalfa plants. One cDNA clone, hi7, in Northern blot analysis showed a high level of transcription of this gene in harvested tissue, but not in non-harvested tissue, nor in wounded or heat shock treated tissue. A 640 bp promoter region isolated by genomic walking based on hi7 cDNA sequence, was fused to...
Zinc is essential but toxic in excess. A bacterial metallothionein, SmtA from Synechococcus PCC 7942, has high affinity for Zn2+ and the intracellular exclusively handling of Zn2+. In this study, we report a functional analysis of SmtA in Arabidopsisthaliana and its response to zinc stress. After high zinc stress, the transgenic plants over-expressing SmtA showed higher survival rate than the wild...
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