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Article

Genome-Wide Analysis of the WOX Family and Its Expression Pattern in Root Development of Paeonia ostii

1
College of Horticulture, Henan Agricultural University, Zhengzhou 450046, China
2
College of Landscape Architecture and Art, Henan Agricultural University, Zhengzhou 450002, China
*
Authors to whom correspondence should be addressed.
Int. J. Mol. Sci. 2024, 25(14), 7668; https://doi.org/10.3390/ijms25147668
Submission received: 6 June 2024 / Revised: 5 July 2024 / Accepted: 11 July 2024 / Published: 12 July 2024
(This article belongs to the Special Issue Advances in the Identification and Characterization of Plant Genes)

Abstract

Tree peony (Paeonia suffruticosa Andr.) is a woody plant with high ornamental, medicinal, and oil values. However, its low rooting rate and poor rooting quality are bottleneck issues in the micropropagation of P. ostii. The WUSCHEL-related homeobox (WOX) family plays a crucial role in root development. In this study, based on the screening of the genome and root transcriptome database, we identified ten WOX members in P. ostii. Phylogenetic analysis revealed that the ten PoWOX proteins clustered into three major clades, the WUS, intermediate, and ancient clade, respectively. The conserved motifs and tertiary structures of PoWOX proteins located in the same clade exhibited higher similarity. The analysis of cis-regulatory elements in the promoter indicated that PoWOX genes are involved in plant growth and development, phytohormones, and stress responses. The expression analysis revealed that PoWOX genes are expressed in distinct tissues. PoWOX4, PoWOX5, PoWOX11, and PoWOX13b are preferentially expressed in roots at the early stage of root primordium formation, suggesting their role in the initiation and development of roots. These results will provide a comprehensive reference for the evolution and potential function of the WOX family and offer guidance for further study on the root development of tree peony.
Keywords: Paeonia ostii; WOX family; root development; bioinformatics; expression analysis Paeonia ostii; WOX family; root development; bioinformatics; expression analysis

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MDPI and ACS Style

Lou, X.; Wang, J.; Wang, G.; He, D.; Shang, W.; Song, Y.; Wang, Z.; He, S. Genome-Wide Analysis of the WOX Family and Its Expression Pattern in Root Development of Paeonia ostii. Int. J. Mol. Sci. 2024, 25, 7668. https://doi.org/10.3390/ijms25147668

AMA Style

Lou X, Wang J, Wang G, He D, Shang W, Song Y, Wang Z, He S. Genome-Wide Analysis of the WOX Family and Its Expression Pattern in Root Development of Paeonia ostii. International Journal of Molecular Sciences. 2024; 25(14):7668. https://doi.org/10.3390/ijms25147668

Chicago/Turabian Style

Lou, Xueyuan, Jiange Wang, Guiqing Wang, Dan He, Wenqian Shang, Yinglong Song, Zheng Wang, and Songlin He. 2024. "Genome-Wide Analysis of the WOX Family and Its Expression Pattern in Root Development of Paeonia ostii" International Journal of Molecular Sciences 25, no. 14: 7668. https://doi.org/10.3390/ijms25147668

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