Orginal Article

In silico Analysis of osr40c1 Promoter Sequence Isolated from Indica Variety Pokkali

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  • 1Department of Plant Sciences, Faculty of Science, University of Colombo, Colombo 00300, Sri Lanka
    2Genetech Molecular Diagnostics and School of Gene Technology, Colombo 00800, Sri Lanka

Received date: 2016-09-10

  Accepted date: 2016-11-28

  Online published: 2017-04-28

Abstract

The promoter region of a drought and abscisic acid (ABA) inducible gene, osr40c1, was isolated from a salt-tolerant indica rice variety Pokkali, which is 670 bp upstream of the putative translation start codon. In silico promoter analysis of resulted sequence showed that at least 15 types of putative motifs were distributed within the sequence, including two types of common promoter elements, TATA and CAAT boxes. Additionally, several putative cis-acing regulatory elements which may be involved in regulation of osr40c1 expression under different conditions were found in the 5′-upstream region of osr40c1. These are ABA-responsive element, light-responsive elements (ATCT-motif, Box I, G-box, GT1-motif, Gap-box and Sp1), myeloblastosis oncogene response element (CCAAT-box), auxin responsive element (TGA-element), gibberellin-responsive element (GARE-motif) and fungal-elicitor responsive elements (Box E and Box-W1). A putative regulatory element, required for endosperm-specific pattern of gene expression designated as Skn-1 motif, was also detected in the Pokkali osr40c1 promoter region. In conclusion, the bioinformatic analysis of osr40c1 promoter region isolated from indica rice variety Pokkali led to the identification of several important stress-responsive cis-acting regulatory elements, and therefore, the isolated promoter sequence could be employed in rice genetic transformation to mediate expression of abiotic stress induced genes.

Cite this article

S. I. de Silva W., M. N. Perera M., L. N. S. Perera K., M. Wickramasuriya A., A. U. Jayasekera G. . In silico Analysis of osr40c1 Promoter Sequence Isolated from Indica Variety Pokkali[J]. Rice Science, 2017 , 24(4) : 32 -40 . DOI: 10.1016/j.rsci.2016.11.002

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