Genome-Wide Identification and Expression Analysis of the <i>SPL</i> Gene Family in <i>Solanum melongena</i> (Eggplant)

Genome-Wide Identification and Expression Analysis of the <i>SPL</i> Gene Family in <i>Solanum melongena</i> (Eggplant)

The SPL (SQUAMOSA promoter-binding protein-like) transcription factor gene family plays a crucial role in the growth of plants, including fruit development. Although the <i>SPL</i> gene family has been widely studied in many plants, it remains unexplored in eggplant, an important Solanac...

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Bibliographic Details
Main Authors: Hefen Cheng, Zhiliang Li, Baojuan Sun, Wei Zhao, Songyuan Zhang, Tao Li, Qian You, Dinggang Zhou
Format: Article
Language:English
Published: MDPI AG 2025-02-01
Series:Agronomy
Subjects:
eggplant
<i>SmSPL</i>
genome
fruit development
expression patterns
Online Access:https://www.mdpi.com/2073-4395/15/2/471
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Summary:The SPL (SQUAMOSA promoter-binding protein-like) transcription factor gene family plays a crucial role in the growth of plants, including fruit development. Although the <i>SPL</i> gene family has been widely studied in many plants, it remains unexplored in eggplant, an important Solanaceae vegetable crop. In this study, we performed a genome-wide analysis and identified 11 <i>SmSPL</i> genes with 10 motifs in the eggplant genome, which were assigned to five groups based on the amino acid sequences and the gene structure of the SBP domain. In addition, the expression patterns of 11 <i>SmSPL</i> genes were analyzed in different tissue types and at four different fruit development stages in eggplant. The results showed that all <i>SmSPL</i> genes were expressed differently in various tissues, suggesting that they may play different roles in the regulation of the development of different organs. Specifically, the expression level of <i>SmSPL_5</i> was increased at the fruit expansion stage and showed the highest expression levels at 16 and 24 days after pollination, suggesting that it may be involved in regulating fruit development at both the fruit expansion and commercial fruit stages. Overall, this study provides an important basis for further exploring the function of the <i>SmSPL</i> gene family in eggplant.
ISSN:2073-4395

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