Genome-Wide Identification and Expression Analysis of Eggplant Reveals the Key MYB Transcription Factor Involved in Anthocyanin Synthesis

MYB transcription factors (TFs) represent one of the largest gene families in plants, and previous studies have demonstrated their involvement in regulating anthocyanin synthesis. Eggplant is an important anthocyanin-rich solanaceae vegetable crop. In this study, a total of 219 MYB gene-family membe...

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Main Authors: Jiaqi Ai, Wuhong Wang, Tianhua Hu, Haijiao Hu, Yaqin Yan, Jinglei Wang, Yunzhu Wang, Na Hu, Hongtao Pang, Chonglai Bao, Qingzhen Wei
Format: Article
Language:English
Published: MDPI AG 2024-12-01
Series:Horticulturae
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Online Access:https://www.mdpi.com/2311-7524/11/1/12
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author Jiaqi Ai
Wuhong Wang
Tianhua Hu
Haijiao Hu
Yaqin Yan
Jinglei Wang
Yunzhu Wang
Na Hu
Hongtao Pang
Chonglai Bao
Qingzhen Wei
author_facet Jiaqi Ai
Wuhong Wang
Tianhua Hu
Haijiao Hu
Yaqin Yan
Jinglei Wang
Yunzhu Wang
Na Hu
Hongtao Pang
Chonglai Bao
Qingzhen Wei
author_sort Jiaqi Ai
collection DOAJ
description MYB transcription factors (TFs) represent one of the largest gene families in plants, and previous studies have demonstrated their involvement in regulating anthocyanin synthesis. Eggplant is an important anthocyanin-rich solanaceae vegetable crop. In this study, a total of 219 MYB gene-family members were identified using the complete and high-quality eggplant genome, comprising 105 1R-MYBs, 107 R2R3-MYBs, 5 3R-MYBs, and 2 4R-MYBs. Using phylogenetic analysis, we divided them into 33 subfamilies. Members of the SmeMYB gene family are unevenly distributed on 12 chromosomes, but are mainly concentrated at the upper and lower ends of the chromosomes. In addition, the expression levels of R2R3-MYBs in differently colored eggplant tissues (peel, calyx, stem, flower, and leaf) were investigated with RNA-seq (RNA sequencing). A total of 13 differentially expressed R2R3-MYB transcription factors related to the synthesis of anthocyanins in different eggplant tissues were screened out. <i>SmeMYB110</i>, <i>SmeMYB175</i>, and <i>SmeMYB182</i> were also found to play significant roles in this process. Furthermore, 10 MYB TFs were identified as potential genes regulating anthocyanin synthesis in different tissues. The quantitative real-time PCR (qRT-PCR) analysis results showed that SmeMYB175 was regarded as the most likely key transcription factor regulating anthocyanin synthesis in calyx. These results not only deepen our understanding of the MYB gene family in eggplant but also lay a solid foundation for further research on the regulation of SmeR2R3-MYBs in anthocyanin synthesis across diverse eggplant tissues.
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spelling doaj-art-a3295c984de1406eb6229bde12bb86b72025-01-24T13:34:28ZengMDPI AGHorticulturae2311-75242024-12-011111210.3390/horticulturae11010012Genome-Wide Identification and Expression Analysis of Eggplant Reveals the Key MYB Transcription Factor Involved in Anthocyanin SynthesisJiaqi Ai0Wuhong Wang1Tianhua Hu2Haijiao Hu3Yaqin Yan4Jinglei Wang5Yunzhu Wang6Na Hu7Hongtao Pang8Chonglai Bao9Qingzhen Wei10College of Horticulture Science, Zhejiang Agriculture and Forestry University, Hangzhou 310021, ChinaThe Institute of Vegetable, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, ChinaThe Institute of Vegetable, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, ChinaThe Institute of Vegetable, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, ChinaThe Institute of Vegetable, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, ChinaThe Institute of Vegetable, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, ChinaThe Institute of Vegetable, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, ChinaCollege of Horticulture Science, Zhejiang Agriculture and Forestry University, Hangzhou 310021, ChinaThe Institute of Vegetable, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, ChinaThe Institute of Vegetable, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, ChinaThe Institute of Vegetable, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, ChinaMYB transcription factors (TFs) represent one of the largest gene families in plants, and previous studies have demonstrated their involvement in regulating anthocyanin synthesis. Eggplant is an important anthocyanin-rich solanaceae vegetable crop. In this study, a total of 219 MYB gene-family members were identified using the complete and high-quality eggplant genome, comprising 105 1R-MYBs, 107 R2R3-MYBs, 5 3R-MYBs, and 2 4R-MYBs. Using phylogenetic analysis, we divided them into 33 subfamilies. Members of the SmeMYB gene family are unevenly distributed on 12 chromosomes, but are mainly concentrated at the upper and lower ends of the chromosomes. In addition, the expression levels of R2R3-MYBs in differently colored eggplant tissues (peel, calyx, stem, flower, and leaf) were investigated with RNA-seq (RNA sequencing). A total of 13 differentially expressed R2R3-MYB transcription factors related to the synthesis of anthocyanins in different eggplant tissues were screened out. <i>SmeMYB110</i>, <i>SmeMYB175</i>, and <i>SmeMYB182</i> were also found to play significant roles in this process. Furthermore, 10 MYB TFs were identified as potential genes regulating anthocyanin synthesis in different tissues. The quantitative real-time PCR (qRT-PCR) analysis results showed that SmeMYB175 was regarded as the most likely key transcription factor regulating anthocyanin synthesis in calyx. These results not only deepen our understanding of the MYB gene family in eggplant but also lay a solid foundation for further research on the regulation of SmeR2R3-MYBs in anthocyanin synthesis across diverse eggplant tissues.https://www.mdpi.com/2311-7524/11/1/12eggplantMYB gene familygenome-wide identificationanthocyaninRNA-seq
spellingShingle Jiaqi Ai
Wuhong Wang
Tianhua Hu
Haijiao Hu
Yaqin Yan
Jinglei Wang
Yunzhu Wang
Na Hu
Hongtao Pang
Chonglai Bao
Qingzhen Wei
Genome-Wide Identification and Expression Analysis of Eggplant Reveals the Key MYB Transcription Factor Involved in Anthocyanin Synthesis
Horticulturae
eggplant
MYB gene family
genome-wide identification
anthocyanin
RNA-seq
title Genome-Wide Identification and Expression Analysis of Eggplant Reveals the Key MYB Transcription Factor Involved in Anthocyanin Synthesis
title_full Genome-Wide Identification and Expression Analysis of Eggplant Reveals the Key MYB Transcription Factor Involved in Anthocyanin Synthesis
title_fullStr Genome-Wide Identification and Expression Analysis of Eggplant Reveals the Key MYB Transcription Factor Involved in Anthocyanin Synthesis
title_full_unstemmed Genome-Wide Identification and Expression Analysis of Eggplant Reveals the Key MYB Transcription Factor Involved in Anthocyanin Synthesis
title_short Genome-Wide Identification and Expression Analysis of Eggplant Reveals the Key MYB Transcription Factor Involved in Anthocyanin Synthesis
title_sort genome wide identification and expression analysis of eggplant reveals the key myb transcription factor involved in anthocyanin synthesis
topic eggplant
MYB gene family
genome-wide identification
anthocyanin
RNA-seq
url https://www.mdpi.com/2311-7524/11/1/12
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