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Genome-Wide Characterization of MADS-box Genes Identifies Candidates Associated with Flower and Fruit Development in Loquat (Eriobotrya japonica Lindl.)

文献类型： 外文期刊

作者： Li, Wenxiang 1 ; Liu, Xiaopei 1 ; Zhao, Chongbin 1 ; Wu, Wendong 1 ; Jiang, Yuanyuan 3 ; Su, Wenbing 4 ; Lin, Shunquan 1 ; Yang, Xianghui 1 ; Peng, Ze 1 ;

作者机构： 1.South China Agr Univ, State Key Lab Conservat & Utilizat Subtrop Agrobi, Guangzhou 510642, Peoples R China

2.South China Agr Univ, Coll Hort, Key Lab Innovat & Utilizat Hort Crop Resources So, Minist Agr & Rural Affairs, Guangzhou 510642, Peoples R China

3.Shaoguan Univ, Coll Biol & Agr, Shaoguan 512005, Peoples R China

4.Fujian Acad Agr Sci, Fruit Res Inst, Fuzhou 350013, Peoples R China

关键词： ABCDE model; floral transition; fruit size; loquat (Eriobotrya japonica Lindl.); MADS-box

期刊名称：AGRONOMY-BASEL （ 影响因子：3.7； 五年影响因子：4.0 ）

ISSN：

年卷期： 2023 年 13 卷 11 期

页码：

收录情况： SCI

摘要： The MADS-box transcription factors have garnered substantial attention due to their crucial involvement in various biological processes, particularly in flower organogenesis. A comprehensive investigation into the MADS-box genes remains lacking in loquat (Eriobotrya japonica Lindl.). In the current study, to preliminarily explore the potential candidate genes related to flower and fruit development, a genome-wide analysis was carried out to identify and characterize the MADS-box gene family in loquat. Among the 125 identified EjMADS-box members, 49 genes belonged to type I, which were subsequently assigned to three subfamilies: M alpha (25 genes), M beta (10 genes), and M gamma (14 genes). Additionally, 76 genes fell under type II, which were categorized into two groups: MIKCC (70 genes) and MIKC* (6 genes). Through the collinearity analysis and comparison of the gene numbers between loquat and other Rosaceae genomes, it was revealed that the type II MADS-box members were expanded in Maloideae after a whole genome duplication. The gene expression analysis utilizing various tissues during flower development revealed that the expression patterns of the ABCDE model homologs were conserved in loquat. In addition, several candidate genes potentially involved in flower bud differentiation (EjMADS107/109) and fruit expansion (EjMADS24/46/49/55/61/67/77/86) were identified. This analysis could serve as a fundamental basis for investigating the molecular functions of the MADS-box genes in the development of flowers as well as fruits in loquat.

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