Genomic and Transcriptomic Insights into the Evolution and Divergence of MIKC-Type MADS-Box Genes in Carica papaya
文献类型： 外文期刊
第一作者： Dai, Yunsu
作者： Dai, Yunsu;Wang, Yu;Liu, Difa;Xia, Wei;Dai, Yunsu;Wang, Yu;Jia, Ruizong;Huang, Xueying;Zhao, Hui;Zhao, Haixu;Hu, Shuai;Gao, Ling;Guo, Anping;Ji, Changmian;Dai, Yunsu;Wang, Yu;Jia, Ruizong;Huang, Xueying;Zhao, Hui;Zhao, Haixu;Hu, Shuai;Gao, Ling;Guo, Anping;Ji, Changmian;Wang, Yu;Jia, Ruizong;Zhao, Hui;Hu, Shuai;Guo, Anping;Ji, Changmian;Zeng, Liwang;He, Linwen;Huang, Xueying;Liu, Difa;Gao, Ling
作者机构：
关键词： Carica papaya; type II MADS-box; evolutional scenario; duplicated genes; large-scale transcriptomes; expression divergence
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.6； 五年影响因子：6.2 ）
ISSN： 1661-6596
年卷期： 2023 年 24 卷 18 期
页码：
收录情况： SCI
摘要： MIKC-type MADS-box genes, also known as type II genes, play a crucial role in regulating the formation of floral organs and reproductive development in plants. However, the genome-wide identification and characterization of type II genes as well as a transcriptomic survey of their potential roles in Carica papaya remain unresolved. Here, we identified and characterized 24 type II genes in the C. papaya genome, and investigated their evolutional scenario and potential roles with a widespread expression profile. The type II genes were divided into thirteen subclades, and gene loss events likely occurred in papaya, as evidenced by the contracted member size of most subclades. Gene duplication mainly contributed to MIKC-type gene formation in papaya, and the duplicated gene pairs displayed prevalent expression divergence, implying the evolutionary significance of gene duplication in shaping the diversity of type II genes in papaya. A large-scale transcriptome analysis of 152 samples indicated that different subclasses of these genes showed distinct expression patterns in various tissues, biotic stress response, and abiotic stress response, reflecting their divergent functions. The hub-network of male and female flowers and qRT-PCR suggested that TT16-3 and AGL8 participated in male flower development and seed germination. Overall, this study provides valuable insights into the evolution and functions of MIKC-type genes in C. papaya.
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