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Acta Prataculturae Sinica ›› 2016, Vol. 25 ›› Issue (2): 124-131.DOI: 10.11686/cyxb2015330

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A maize abscisic acid insensitive 3 gene confers drought and salt stress tolerance in Arabidopsis

YUAN Jin-Cheng**, SONG Jin-Hui**, MA Hai-Lian, WENG Qiao-Yun, WANG Ling-Yun, ZHAO Yan, LIU Ying-Hui*   

  1. College of Agriculture and Forestry, Hebei North University, Zhangjiakou 075000, China
  • Received:2015-06-30 Online:2016-02-20 Published:2016-02-20

Abstract: The abscisic acid insensitive 3 gene (ABI3) has been widely studied in cereals such as wheat, maize and rice however, the functions of ABI3 have not been fully described. In this paper, a novel maize ABI3 like gene was cloned and named ZmABI3-L. This gene was predicted to encode a transcription factor with a distinct DNA-binding B3 domain. The full length of the gene was 1735 bp and with an opening read frame of 1212 bp and encoded 404 amino acids. Alignment of the ZmABI3-L proteins with other plants revealed similarities with ABI3 protein from other species. RT-PCR analysis showed ZmABI3-L was up-regulated in maize by dehydration, salt, cold and ABA stress. Over-expression of ZmABI3-L in Arabidopsis plants could enhance salt and drought stress tolerance compared to the wild type. The results suggest that ZmABI3-L may be involved in salt and drought resistance signaling pathways in maize.