RICE SCIENCE ›› 2012, Vol. 19 ›› Issue (2): 86-93.

• Research Paper • Previous Articles     Next Articles

Active Methyl Cycle and Transfer Related Gene Expression in Response to Drought Stress in Rice Leaves

  1. College of Bioscience and Technology, Yangzhou University, Yangzhou 225009, China
  • Online:2012-06-28 Published:2012-04-18
  • Contact: GE Cai-lin
  • Supported by:

    supported by the Open Research Fund Program of Jiangsu Key Laboratory of Crop Cultivation and Physiology, China (Grant No. 0273880036).

Abstract: Three rice varieties, Zhonghan 3, Shanyou 63 and Aizizhan, were used as materials in detecting differential active methyl cycle and transfer related gene expression in response to drought stress. The experiment was performed by gene chip and mRNA differential display technologies under the conditions of drought simulated with 10% PEG6000 solution. The results indicated that the methyl cycle could be activated in the leaves of Zhonghan 3 and Shanyou 63 but inhibited in the leaves of Aizizhan under drought stress. Furthermore, drought stress could induce the expression of a large number of methyltransferase genes, especially the transcription of Rubisco protein methylation related genes, which are beneficial for prevention of Rubisco protein oxidation and degradation, and drought stress could inhibit the transcription of DNA methyltransferase genes and histone methyltransferase genes. This result confirmed that the active methyl cycle and transfer related genes were involved in rice drought resistance.

Key words: drought stress, gene chip, mRNA differential display, gene transcription, active methyl cycle, transfer related gene expression