Genome-Wide Identification and Expression Analysis of the SQUAMOSA Promoter-Binding Protein-like ( SPL ) Transcription Factor Family in Catalpa bungei

• Published in: International journal of molecular sciences Vol. 25; no. 1; p. 97
• Main Authors: Fan, Erqin, Liu, Caixia, Wang, Zhi, Wang, Shanshan, Ma, Wenjun, Lu, Nan, Liu, Yuhang, Fu, Pengyue, Wang, Rui, Lv, Siyu, Qu, Guanzheng, Wang, Junhui
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 01-01-2024; MDPI
• Subjects: Amino acids; Catalpa bungei; CbuSPL; Chromosomes; Evolution & development; flowering; Flowers & plants; Gene expression; Genomes; Localization; Phase transitions; Phylogenetics; Plant growth; Proteins; Signal transduction; Transcription factors; Catalpa bungei; CbuSPL; flowering
• ISSN: 1422-0067; 1661-6596; 1422-0067
• DOI: 10.3390/ijms25010097

As a plant-specific transcription factor, the
gene family plays a critical role in plant growth and development. Although the
gene family has been identified in diverse plant species, there have been no genome-wide identification or systematic study reports on the
gene family in
. In this study, we identified 19 putative
gene family members in the
genome. According to the phylogenetic relationship, they can be divided into eight groups, and the genes in the same group have a similar gene structure and conserved motifs. Synteny analysis showed that fragment duplication played an important role in the expansion of the
gene family. At the same time,
genes have cis-acting elements and functions related to light response, hormone response, growth and development, and stress response. Tissue-specific expression and developmental period-specific expression analysis showed that
may be involved in flowering initiation and development, flowering transition, and leaf development. In addition, the ectopic expression of
in Arabidopsis confirmed that it can promote early flowering and induce the expression of related flowering genes. These systematic research results will lay a foundation for further study on the functional analysis of
genes in
.