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Characterizing the Role of TaWRKY13 in Salt Tolerance

文献类型: 外文期刊

作者: Zhou, Shuo 1 ; Zheng, Wei-Jun 2 ; Liu, Bao-Hua 3 ; Zheng, Jia-Cheng 4 ; Dong, Fu-Shuang 1 ; Liu, Zhi-Fang 5 ; Wen, Zhi 1 ;

作者机构: 1.Hebei Acad Agr & Forestry Sci, Plant Genet Engn Ctr Hebei Prov, Inst Genet & Physiol, Shijiazhuang 050051, Hebei, Peoples R China

2.Northwest A&F Univ, Coll Agron, Yangling 712100, Shaanxi, Peoples R China

3.Handan Acad Agr Sci, Handan 056001, Peoples R China

4.Anhui Sci & Technol Univ, Coll Agron, Fengyang 239000, Chuzhou, Peoples R China

5.Hebei Seed Stn, Shijiazhuang 050031, Hebei, Peoples R China

6.CAAS, Natl Key Facil Crop Gene Resources & Genet Improv, Key Lab Biol & Genet Improvement Triticeae Crops, Inst Crop Sci,Minist Agr, Beijing 100081, Peoples R China

关键词: stress responsive mechanisms; TaWRKY transcription factors; salt tolerance

期刊名称:INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES ( 影响因子:5.923; 五年影响因子:6.132 )

ISSN:

年卷期: 2019 年 20 卷 22 期

页码:

收录情况: SCI

摘要: The WRKY transcription factor superfamily is known to participate in plant growth and stress response. However, the role of this family in wheat (Triticum aestivum L.) is largely unknown. Here, a salt-induced gene TaWRKY13 was identified in an RNA-Seq data set from salt-treated wheat. The results of RT-qPCR analysis showed that TaWRKY13 was significantly induced in NaCl-treated wheat and reached an expression level of about 22-fold of the untreated wheat. Then, a further functional identification was performed in both Arabidopsisthaliana and Oryza sativa L. Subcellular localization analysis indicated that TaWRKY13 is a nuclear-localized protein. Moreover, various stress-related regulatory elements were predicted in the promoter. Expression pattern analysis revealed that TaWRKY13 can also be induced by polyethylene glycol (PEG), exogenous abscisic acid (ABA), and cold stress. After NaCl treatment, overexpressed Arabidopsis lines of TaWRKY13 have a longer root and a larger root surface area than the control (Columbia-0). Furthermore, TaWRKY13 overexpression rice lines exhibited salt tolerance compared with the control, as evidenced by increased proline (Pro) and decreased malondialdehyde (MDA) contents under salt treatment. The roots of overexpression lines were also more developed. These results demonstrate that TaWRKY13 plays a positive role in salt stress.

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