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Pan X, Deng Z, Wu R, Yang Y, Akher SA, Li W, Zhang Z, Guo Y. Identification of CEP peptides encoded by the tobacco (Nicotiana tabacum) genome and characterization of their roles in osmotic and salt stress responses. Plant Physiol Biochem 2024; 209:108525. [PMID: 38518396 DOI: 10.1016/j.plaphy.2024.108525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 02/23/2024] [Accepted: 03/10/2024] [Indexed: 03/24/2024]
Abstract
Members of the CEP (C-terminally Encoded Peptide) gene family have been shown to be involved in various developmental processes and stress responses in plants. In order to understand the roles of CEP peptides in stress response, a comprehensive bioinformatics approach was employed to identify NtCEP genes in tobacco (Nicotiana tabacum L.) and to analyze their potential roles in stress responses. Totally 21 NtCEP proteins were identified and categorized into two subgroups based on their CEP domains. Expression changes of the NtCEP genes in response to various abiotic stresses were analyzed via qRT-PCR and the results showed that a number of NtCEPs were significant up-regulated under drought, salinity, or temperature stress conditions. Furthermore, application of synthesized peptides derived from NtCEP5, NtCEP13, NtCEP14, and NtCEP17 enhanced plant tolerance to different salt stress treatments. NtCEP5, NtCEP9 and NtCEP14, and NtCEP17 peptides were able to promote osmotic tolerance of tobacco plants. The results from this study suggest that NtCEP peptides may serve as important signaling molecules in tobacco's response to abiotic stresses.
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Affiliation(s)
- Xiaolu Pan
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, China; (Q)ingdao Municipal Key Laboratory of Plant Molecular Pharming, Qingdao, China
| | - Zhichao Deng
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, China; (Q)ingdao Municipal Key Laboratory of Plant Molecular Pharming, Qingdao, China
| | - Rongrong Wu
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, China; (Q)ingdao Municipal Key Laboratory of Plant Molecular Pharming, Qingdao, China; Qingdao Agricultural University, Qingdao, China
| | - Yalun Yang
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, China; (Q)ingdao Municipal Key Laboratory of Plant Molecular Pharming, Qingdao, China; Qingdao Agricultural University, Qingdao, China
| | - Sayed Abdul Akher
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, China; (Q)ingdao Municipal Key Laboratory of Plant Molecular Pharming, Qingdao, China
| | - Wei Li
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, China; (Q)ingdao Municipal Key Laboratory of Plant Molecular Pharming, Qingdao, China
| | - Zenglin Zhang
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, China; (Q)ingdao Municipal Key Laboratory of Plant Molecular Pharming, Qingdao, China.
| | - Yongfeng Guo
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, China; (Q)ingdao Municipal Key Laboratory of Plant Molecular Pharming, Qingdao, China.
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