ORIGINAL RESEARCH article
Front. Plant Sci.
Sec. Plant Bioinformatics
Volume 16 - 2025 | doi: 10.3389/fpls.2025.1482764
Genome-Wide Identification of PEBP Gene Family in Hedychium coronarium
Provisionally accepted
- 1College of Horticulture, South China Agricultural University, Guangzhou, China
- 2Environmental Horticulture Research Institute, Guangdong Academy of Agricultural Sciences, Guangdong Key Lab of Ornamental Plant Germplasm Innovation and Utilization, Guangzhou, China
- 3College of Life Science, South China Agricultural University, Guangzhou, China
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The Phosphatidylethanolamine-binding protein (PEBP) gene family plays a crucial role in plant growth and development, particularly in regulating flowering time and morphogenesis. However, the diversity, expression patterns, and functions of PEBP genes in Hedychium coronarium remain largely unexplored. In this study, 14 HcPEBP genes were identified and classified into MFT, FT, and TFL1 subfamilies based on phylogenetic analysis. Intraspecific collinearity analysis revealed three collinear relationships within the HcPEBP gene family. Interspecific collinearity analysis across H. coronarium, rice, wild banana, and pineapple highlighted the evolutionary significance of specific PEBP genes. Motifs DPDxP and GxHR are conserved in HcPEBPs, which are essential for anion-binding activity. At the same position in the C-terminus, FT-likes contain the xGxGGR motif, while TFL1-likes possesses the TAARRR motif. 64.3% of HcPEBP genes consist of four exons and three introns. Promoter regions of HcPEBP genes are enriched with light-responsive elements, suggesting a primary response to light signals. Expression patterns analysis by qRT-PCR showed that seven FT-like genes are predominantly expressed in leaves, with increased expression during the transition from vegetative to reproductive growth. HcPEBP11, a FT-like gene, is highly expressed in inflorescence buds. Overexpression of HcPEBP11 in tobacco induced early flowering, confirming its role in promoting flowering. This study provides a foundation for further research on the biological functions of the PEBP gene family in H. coronarium and elucidates the role of HcPEBP11 in flowering regulation.
Keywords: PEBP gene family, FT-like gene, HcPEBP11, flowering time, Hedychium coronarium
Received: 18 Aug 2024; Accepted: 19 Jun 2025.
Copyright: © 2025 Wang, Zhou, Wang, Li, Yu, Yu and Fan. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Yanping Fan, College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
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