Drought stress is one of the most important abiotic stresses that deteriorates rice agriculture. One of the best ways to establish drought stress tolerance in plants is miRNA (microRNA) mediated post transcriptional gene regulation. MiRNAs are small non-coding RNAs with 19-24 nt length that are originated from MIRNA genes. MiR398 is one of the important stresses responsive miRNAs. It has been reported that this miRNA could play important role under stress conditions. In this work we studied miR398 differential expression under drought stress in both shoot and root tissues of rice using qRT-PCR. Results indicated that miR398 showed significant up-regulation in shoot tissue whereas no change was detected for this miRNA expression in root tissue under drought stress. In addition, we observed MYB and ERE in the up-stream regions of MIRNA genes that justify miR398 differential expression under drought stress. The results of target prediction indicated that miR398 could regulate Cu-Zn superoxide dismutase. Thus, miR398 could play important role under drought stress condition.
|Number of pages||6|
|Journal||Bulletin of the Georgian National Academy of Sciences|
|Publication status||Published - 2014|
- Oryza sativa
- drought stress