PJB-2024-313
Genome-wide identification and expression analysis of EARLY FLOWERING (ELF) gene family in Nicotiana tabacum
Yudong Chen
Abstract
EARLY FLOWERING (ELF) genes play an important role in plant photoperiod pathways and are negative regulation genes of plant flowering. At present, the identification of ELFs in Nicotiana tabacum (NtELFs) has not been systematically carried out. Using the Arabidopsis ELF family genes as a reference, 28 NtELF family members were identified, which were divided into 4 subfamilies. The ELF4 subfamily had the largest number of 13 members and owned a unique motif 1; with the exception of NtELF4-9. All members of the ELF4 subfamily had only one CDS. The results of chromosome localization of the ELF family members showed that there were three sets of tandem repeat events in the NtELFs. Promoters of NtELFs contained four types of cis-acting elements, and the light response elements were the most elements. NtELF family proteins in the same subfamily had similar 3D structures and similar gene expression patterns. GO enrichment analysis of family genes showed that terms related to stimulus, photoperiodism, and reproduction were significantly enriched. This study systematically identified NtELF family members for the first time, which laid a foundation for further research on biological functions, and provided a background reference for gene editing breeding.
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