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Volume 14
Issue 5
10.3390/agronomy14051073
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Article

Genome-Wide Identification and Expression Profiles of IMB Genes Reveal Their Potential Roles in the Gametophytic Sexual Reproduction Process of Camellia sinensis

by
Xiaohan Xu
,
Anqi Xing
,
Zichen Wu
,
Yi Sun
,
Xuefeng Xu
,
Shujing Liu
,
Zhen Zhao
,
Xuan Chen
,
Xinghui Li
and
Yuhua Wang
*
College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
*
Author to whom correspondence should be addressed.
Agronomy 2024, 14(5), 1073; https://doi.org/10.3390/agronomy14051073
Submission received: 23 April 2024 / Revised: 15 May 2024 / Accepted: 17 May 2024 / Published: 19 May 2024
(This article belongs to the Special Issue Beverage Crops Breeding: For Wine, Tea, Juices, Cocoa and Coffee)
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Abstract

It is of great significance to explore the molecular mechanism of gametophytic sexual reproduction in the genetic improvement and breeding of tea plants [Camellia sinensis (L.) O. Kuntze]. Imported beta family members (IMBs) are a class of widely distributed nucleoplasmic transport receptor proteins in eukaryotes, affecting plant development and reproduction, and participating in flowering time and sexual reproduction. Still missing, though, is a thorough examination of IMB members in tea plants. Here, seven members of the IMB gene family were screened by a genome-wide investigation in tea plants. These members were scattered unevenly throughout five chromosomes. All of them contained the conserved KAP95 and HEAT Repeat domains. Additionally, the promoter regions of CsIMBs harbored cis-acting elements associated with plant hormones, light, and abiotic stress responses. In order to further confirm the function of CsIMBs in the sexual reproduction of tea plants, the expression patterns of CsIMBs in different flower development stages and the ovary (before and after pollination) were analyzed. The expression results highlighted that CsIMBs were related to the fertility and fruiting of tea plants. Furthermore, five of the seven CsIMBs (CsIMB1a, CsIMB1b, CsIMB2, CsIMB3a, and CsIMB3b) were found to be localized in the nucleus revealed by subcellular localization analysis. These results offer a comprehensive characterization of IMB genes as well as insights into the potential roles of CsIMBs participating in the gametophytic sexual reproduction of C. sinensis.
Keywords: Camellia sinensis; importin beta protein; expression analysis; gametogenesis Camellia sinensis; importin beta protein; expression analysis; gametogenesis

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MDPI and ACS Style

Xu, X.; Xing, A.; Wu, Z.; Sun, Y.; Xu, X.; Liu, S.; Zhao, Z.; Chen, X.; Li, X.; Wang, Y. Genome-Wide Identification and Expression Profiles of IMB Genes Reveal Their Potential Roles in the Gametophytic Sexual Reproduction Process of Camellia sinensis. Agronomy 2024, 14, 1073. https://doi.org/10.3390/agronomy14051073

AMA Style

Xu X, Xing A, Wu Z, Sun Y, Xu X, Liu S, Zhao Z, Chen X, Li X, Wang Y. Genome-Wide Identification and Expression Profiles of IMB Genes Reveal Their Potential Roles in the Gametophytic Sexual Reproduction Process of Camellia sinensis. Agronomy. 2024; 14(5):1073. https://doi.org/10.3390/agronomy14051073

Chicago/Turabian Style

Xu, Xiaohan, Anqi Xing, Zichen Wu, Yi Sun, Xuefeng Xu, Shujing Liu, Zhen Zhao, Xuan Chen, Xinghui Li, and Yuhua Wang. 2024. "Genome-Wide Identification and Expression Profiles of IMB Genes Reveal Their Potential Roles in the Gametophytic Sexual Reproduction Process of Camellia sinensis" Agronomy 14, no. 5: 1073. https://doi.org/10.3390/agronomy14051073

APA Style

Xu, X., Xing, A., Wu, Z., Sun, Y., Xu, X., Liu, S., Zhao, Z., Chen, X., Li, X., & Wang, Y. (2024). Genome-Wide Identification and Expression Profiles of IMB Genes Reveal Their Potential Roles in the Gametophytic Sexual Reproduction Process of Camellia sinensis. Agronomy, 14(5), 1073. https://doi.org/10.3390/agronomy14051073

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