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Article Abstract
According to our previous microarray analysis, we found a putative calmodulin gene related to Pi deficiency and designated AtPsiCaM (Arabidopsis Pi-starvation-induced CaM). Results of structural analysis indicate that AtPsiCaM has three conserved EF-hands motif and belongs to calmodulin-like proteins family (Figs. 1-3). Northern blot analysis revealed that this gene could be induced by potassium and phosphate deficiency and not by potassium deficiency or high salinity (Fig. 4). The results of RT-PCR and GUS histochemical staining assays of the AtPsiCaM promoter::GUS transgenic plants showed that this gene can be expressed in all tissues to different expression levels (Figs. 5, 6).
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