Characterization of three tandem-duplicated calcium binding protein (CaBP) genes and promoters reveals their roles in the phytohormone and wounding responses in citrus
文献类型: 外文期刊
作者: Bei, Xuejun 1 ; Wang, Shaohua 2 ; Huang, Xia 1 ; Zhang, Xiuli 1 ; Zhou, Jiayi 1 ; Zhang, Huiting 1 ; Li, Guoguo 3 ; Cheng, Chunzhen 4 ;
作者机构: 1.Yulin Normal Univ, Educ Dept Guangxi Zhuang Autonomous Reg, Key Lab Conservat & Utilizat Subtrop Bioresources, Yulin 537000, Peoples R China
2.Yunnan Acad Agr Sci, Inst Trop & Subtrop Cash Crops, Baoshan 678000, Peoples R China
3.Guangxi Acad Agr Sci, Hort Res Inst, Nanning 530007, Peoples R China
4.Shanxi Agr Univ, Coll Hort, Jinzhong 030801, Peoples R China
关键词: Calcium binding protein; Phytohormone; Wounding
期刊名称:INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES ( 影响因子:8.2; 五年影响因子:7.8 )
ISSN: 0141-8130
年卷期: 2023 年 227 卷
页码:
收录情况: SCI
摘要: Accumulated evidences have revealed the critical roles of calcium binding protein (CaBP) in growth and stress responses of plants. However, its function in woody plants is poorly understood. In this study, we cloned the CDS, gDNA and promoter sequences of three tandem-duplicated CaBPs (CsCaBP1, CsCaBP2 and CsCaBP3) from Citrus sinensis, analyzed their sequence characteristics, and investigated their gene expression patterns and promoter activities under treatments of CaCl2, several phytohormones and wounding. Results showed that the three CsCaBPs have high sequence similarity. Their expression was strongly induced by CaCl2, ethylene, jasmonic acid, salicylic acid and wounding, and the promoting effect of wounding on their expression was found to be partially ethylene-dependent. Consistently, we identified many phytohormone-related cis-acting elements in their promoters, and their promoter activity could be induced significantly by ethylene, jasmonic acid, salicylic acid and wounding. All the three CsCaBPs can interact with WRKY40, whose encoding gene showed a similar expression pattern to CsCaBPs under phytohormone and wounding treatments. In addition, CsERF14, CsERF21, CsERF3 and CsERF2 could bind to their promoters. The results obtained in this study indicated that the three duplicated CsCaBPs were functionally redundant and played similar roles in the phytohormone and wounding responses of C. sinensis.
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