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Article

Genomic Organization and Expression Profiling of GOLDEN2-like Transcription Factor Genes in Eggplant and Their Role in Heat Stresses

by
Chuying Yu
,
Rui Xiang
,
Yaqin Jiang
,
Weiliu Li
,
Qihong Yang
,
Guiyun Gan
,
Liangyu Cai
,
Peng Wang
,
Wenjia Li
and
Yikui Wang
*
Institute of Vegetable Research, Guangxi Academy of Agricultural Sciences, Nanning 530007, China
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Horticulturae 2024, 10(9), 958; https://doi.org/10.3390/horticulturae10090958
Submission received: 7 August 2024 / Revised: 2 September 2024 / Accepted: 6 September 2024 / Published: 7 September 2024

Abstract

GOLDEN2-like (GLK) transcription factor genes are involved in chloroplast biogenesis during all stages of plant growth and development, as well as in the response to biotic and abiotic stresses. However, little is known about this transcription factor family in eggplant. In this study, we identified 54 GLK genes in the eggplant genome (S. melongena L.) and classified them into seven groups (G1–G7). Structural analysis illustrated that the SmGLK proteins of specific groups are relatively conserved. Cis-acting elements indicated that these genes are likely to be involved in multiple responses stimulated by light, phytohormones, and abiotic stress. Collinear analysis indicated that expansion of the SmGLK gene family primarily occurred through segmental duplication. Tissue-specific expression analysis revealed that SmGLKs were preferentially expressed in leaves, fruits, and seeds. Further screening of SmGLK genes revealed their differential expression under various treatments. Notably, SmGLK18 was significantly responsive to multiple phytohormones and stress treatments, whereas SmGLK3 and SmGLK12 were highly induced by ABA, IAA, SA, and drought treatments. Our study provides new information on the eggplant GLK family systematically and comprehensively. For the first time, we propose that SmGLK18 may play a key role in improving heat resistance. This study provides valuable candidate gene resources for further functional research and will benefit eggplant molecular breeding.
Keywords: eggplant; GOLDEN2-LIKE; abiotic stress; expression profiles eggplant; GOLDEN2-LIKE; abiotic stress; expression profiles

Share and Cite

MDPI and ACS Style

Yu, C.; Xiang, R.; Jiang, Y.; Li, W.; Yang, Q.; Gan, G.; Cai, L.; Wang, P.; Li, W.; Wang, Y. Genomic Organization and Expression Profiling of GOLDEN2-like Transcription Factor Genes in Eggplant and Their Role in Heat Stresses. Horticulturae 2024, 10, 958. https://doi.org/10.3390/horticulturae10090958

AMA Style

Yu C, Xiang R, Jiang Y, Li W, Yang Q, Gan G, Cai L, Wang P, Li W, Wang Y. Genomic Organization and Expression Profiling of GOLDEN2-like Transcription Factor Genes in Eggplant and Their Role in Heat Stresses. Horticulturae. 2024; 10(9):958. https://doi.org/10.3390/horticulturae10090958

Chicago/Turabian Style

Yu, Chuying, Rui Xiang, Yaqin Jiang, Weiliu Li, Qihong Yang, Guiyun Gan, Liangyu Cai, Peng Wang, Wenjia Li, and Yikui Wang. 2024. "Genomic Organization and Expression Profiling of GOLDEN2-like Transcription Factor Genes in Eggplant and Their Role in Heat Stresses" Horticulturae 10, no. 9: 958. https://doi.org/10.3390/horticulturae10090958

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