Transcriptome and morphological analyses of double flower formation in Dianthus chinensis

文献类型： 外文期刊

第一作者： Zhang, Xiaoni

作者： Zhang, Xiaoni;Wu, Zhiqiang;Zhang, Xiaoni;Lin, Shengnan;Wu, Quanshu;Wang, Qijian;Shi, Chunmei;Bao, Manzhu;Bendahmane, Mohammed;Fu, Xiaopeng;Bendahmane, Mohammed

作者机构：

关键词： Dianthus spp.; Petal boundary; Floral morphology; Double flower; Co-expression network

期刊名称：HORTICULTURAL PLANT JOURNAL （ 影响因子：5.7； 五年影响因子：5.4 ）

ISSN： 2095-9885

年卷期： 2024 年 10 卷 1 期

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收录情况： SCI

摘要： The double flower developmental process is regulated via a complex transcriptional regulatory network. To understand this highly dynamic and complex developmental process of Dianthus spp., we performed a comparative analysis of floral morphology and transcriptome dynamics in simple flowers and double flowers. We found that the primordium of double flowers of 'X' was larger in size compared to that of simple flowers of 'L' in Dianthus chinensis. RNA-seq and Weighted Gene Co-expression Network Analysis (WGCNA) during flower development, identified stage-specific gene network modules. Expression analysis by RNA-seq indicated that a group of genes related to floral meristem identity, primordia position and polarity were highly expressed in double flowers genotypes compared to simple flowers genotypes, suggesting their roles in double-petal formation. A total of 21 DEGs related to petal number were identified between simple and double flowers. The experiments of in situ hybridization revealed that DcaAP2L, DcaLFY and DcaUFO genes were expressed in the intra-sepal boundary and petal boundary. We proposed a potential transcriptional regulatory network for simple and double flower development. This study provides novel insights into the molecular mechanism underlying double flower formation in Dianthus spp.

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