Identification and Characterization of a Cation/H Antiporter AtCAX4 Gene from Arabidopsis thaliana
نویسندگان
چکیده
AtCAX4 is a member of the Ca/H exchangers (CAX) family was cloned from cDNA library of Arabidopsis thaliana. AtCAX4 was expressed in all Arabidopsis plant organs, with the highest level in root under normal conditions by quantitative real-time PCR analysis. The expression of AtCAX4 gene is response to Na, Ca and Ba in both the leaves and roots of Arabidopsis. In addition, the pYES2-AtCAX4 transformants confers tolerance to Na, Ca and Ba ions in yeast. These results suggest that AtCAX4 play important role in increasing the Na, Ca or Ba tolerance of yeast.
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