Up-regulation of plasma membrane H+-ATPase under salt stress may enable Aeluropus littoralis to cope with stress

Document Type : Original article

Authors

Department of Crop Production and Plant Breeding, College of Agriculture, Shiraz University, Shiraz, Iran

Abstract

Plasma membrane H+-ATPase is a major integral membrane protein with a role in various physiological processes including abiotic stress response. To study the effect of NaCl on the expression pattern of a gene encoding the plasma membrane H+-ATPase, an experiment was carried out in a completely random design with three replications. A pair of specific primers was designed based on the sequence of the gene encoding plasma membrane H+-ATPase in Aeluropus littoralis to amplify a 259 bp fragment from the target gene by PCR. A gene encoding actin was used as reference gene to normalize the expression level of the target gene. A pair of specific primers was designed to amplify a 157 bp fragment from the actin gene by PCR. Plants were treated with different concentrations of NaCl, 0, 50, 100, 150, 200, 250, 500 and 1000 mM, for two days. Our results showed that the expression level of the plasma membrane H+-ATPase gene increased dramatically at 500 mM and then decreased with increasing concentrations of NaCl. The results also indicated that the leaves of plants, were treated with high concentrations of NaCl changed morphologically, but those grown under low concentrations of NaCl as well as the control plants did not show morphological changes in their leaves. Our results suggest a relation between morphological changes of treated plants and the expression level of the plasma membrane H+-ATPase gene in Aeluropus littoralis.

Keywords

References

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Molecular Biology Research Communications
Volume 3, Issue 1 - Serial Number 1
March
March 2014
Pages 67-75

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