Author:
Wang Yizhen,Ruan Qian,Zhu Xiaolin,Wang Baoqiang,Wei Bochuang,Wei Xiaohong
Abstract
AbstractThe SQUAMOSA promoter binding-like protein (SPL) is a specific transcription factor that affects plant growth and development. The SPL gene family has been explored in various plants, but information about these genes in alfalfa is limited. This study, based on the whole genome data of alfalfa SPL, the fundamental physicochemical properties, phylogenetic evolution, gene structure, cis-acting elements, and gene expression of members of the MsSPL gene family were analyzed by bioinformatics methods. We identified 82 SPL sequences in the alfalfa, which were annotated into 23 genes, including 7 (30.43%) genes with four alleles, 10 (43.47%) with three, 3 (13.04%) with two, 3 (13.04%) with one allele. These SPL genes were divided into six groups, that are constructed from A. thaliana, M. truncatula and alfalfa. Chromosomal localization of the identified SPL genes showed arbitary distribution. The subcellular localization predictions showed that all MsSPL proteins were located in the nucleus. A total of 71 pairs of duplicated genes were identified, and segmental duplication mainly contributed to the expansion of the MsSPL gene family. Analysis of the Ka/Ks ratios indicated that paralogs of the MsSPL gene family principally underwent purifying selection. Protein–protein interaction analysis of MsSPL proteins were performed to predict their roles in potential regulatory networks. Twelve cis-acting elements including phytohormone and stress elements were detected in the regions of MsSPL genes. We further analyzed that the MsSPLs had apparent responses to abiotic stresses such as drought and salt and the biotic stress of methyl jasmonate. These results provide comprehensive information on the MsSPL gene family in alfalfa and lay a solid foundation for elucidating the biological functions of MsSPLs. This study also provides valuable on the regulation mechanism and function of MsSPLs in response to biotic and abiotic stresses.
Funder
National Natural Science Foundation of China
Publisher
Springer Science and Business Media LLC
Reference61 articles.
1. Klein, J., Saedler, H. & Huijser, P. A new family of DNA binding proteins includes putative transcriptional regulators of The Antirrhinum Majus floral meristem identity gene SQUAMOSA. Mol. Gen. Genet. MGG 250, 7–16 (1996).
2. Yamasaki, K. et al. A novel zinc-binding motif revealed by solution structures of DNA-binding domains of Arabidopsis SBP-family transcription factors. J. Mol. Biol. 337, 49–63 (2004).
3. Li, S. et al. SQUAMOSA Promoter binding protein-like (SPL) gene family: TRANSCRIPTOME-wide identification, phylogenetic relationship, expression patterns and network interaction analysis in Panax ginseng C. A. Meyer. Plants 9, (2020).
4. Xing, S., Salinas, M., Hoehmann, S., Berndtgen, R. & Huijser, P. MiR156-Targeted and nontargeted SBP-Box transcription factors act in concert to secure male fertility in Arabidopsis. Plant Cell 22, 3935–3950 (2010).
5. Guo, F., Lu, Q. & Cang, J. Genome-wide identification and expression profiling of the SPL family genes in wheat. Botany. 99, 185–198 (2021).
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