Phosphatidyl ethanolamine-binding proteins (PEBPs) are involved in regulating flowering time and various developmental processes. Functions and expression patterns in cultivated peanuts (Arachis hypogaea L.) remain unknown. In this study, 33 PEBP genes in cultivated peanuts were identified and divided into four subgroups: FT, TFL, MFT and FT-like. Gene structure analysis showed that orthologs from A and B genomes in cultivated peanuts had highly similar structures, but some orthologous genes have subgenomic dominance. Gene collinearity and phylogenetic analysis explain that some PEBP genes play key roles in evolution. Cis-element analysis revealed that PEBP genes are mainly regulated by hormones, light signals and stress-related pathways. Multiple PEPB genes had different expression patterns between early and late-flowering genotypes. Further detection of its response to temperature and photoperiod revealed that PEBPs ArahyM2THPA, ArahyEM6VH3, Arahy4GAQ4U, ArahyIZ8FG5, ArahyG6F3P2, ArahyLUT2QN, ArahyDYRS20 and ArahyBBG51B were the key genes controlling the flowering response to different flowering time genotypes, photoperiods and temperature. This study laid the foundation for the functional study of the PEBP gene in cultivated peanuts and the adaptation of peanuts to different environments.
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| http://dx.doi.org/10.3390/ijms232012429 | DOI Listing |
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Article Synopsis
- Peanuts, an important global oilseed crop, are nutritious but face challenges like pests, diseases, aflatoxins, and allergens, impacting both health and sustainability.
- Traditional breeding methods have limitations, prompting the use of modern techniques such as next-generation sequencing and genome editing to enhance peanut traits and productivity.
- Recent advancements offer the potential to create better peanut varieties, focusing on improving resistance to stress factors, nutritional content, and reducing harmful substances while optimizing transformation and editing methods.
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