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  • Title: The Function of BBX Gene Family under Multiple Stresses in Nicotiana tabacum.
    Author: Song K, Li B, Wu H, Sha Y, Qin L, Chen X, Liu Y, Tang H, Yang L.
    Journal: Genes (Basel); 2022 Oct 12; 13(10):. PubMed ID: 36292726.
    Abstract:
    B-box (BBX) is a zinc finger transcription factor, which is involved in regulating the growth and development of plants and resisting various stresses. In this study, 43 NtBBX genes were identified and divided into five subgroups in tobacco. The members in each subgroup had similar characteristics. The promoter region of NtBBX genes had cis-acting elements related to light response, hormone regulation and stress response. Transcriptome analysis showed that NtBBX30 was significantly up-regulated, and NtBBX12, NtBBX13, NtBBX16 and NtBBX17 were significantly down-regulated under abiotic stresses. The NtBBX genes also responded to the infection of Ralstonia solanacearum. NtBBX9, NtBBX1, NtBBX15 and NtBBX17 showed the greatest response under stresses. The NtBBX genes are expressed in various degrees under different tissues. This research will provide a solid foundation for further study of the biological function of NtBBX genes in tobacco.
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