Comparative Transcriptome Analysis between Ornamental Apple Species Provides Insights into Mechanism of Double Flowering

文献类型： 外文期刊

第一作者： Gul, Hera

作者： Gul, Hera;Tong, Zhaoguo;Han, Xiaolei;Nawaz, Iqra;Wahocho, Safdar Ali;Zhang, Caixia;Tian, Yi;Cong, Peihua;Zhang, Liyi;Gul, Hera;Tong, Zhaoguo;Han, Xiaolei;Nawaz, Iqra;Wahocho, Safdar Ali;Zhang, Caixia;Tian, Yi;Cong, Peihua;Zhang, Liyi;Khan, Shumaila

作者机构：

关键词： apple; double flower; transcriptome (RNA-seq); floral organogenesis

期刊名称：AGRONOMY-BASEL （ 影响因子：3.417； 五年影响因子：3.64 ）

ISSN： 2073-4395

年卷期： 2019 年 9 卷 3 期

页码：

收录情况： SCI

摘要： Double-flower ornamental crabapples display eye-catching morphologies in comparison to single flower, but the genetic basis of double-flower development is not yet well known in apples. In order to comprehensively understand the differential expression of genes (DEGs) between single and double flower, the transcriptome of double flower crabapples Malus Kelsey, Malus micromalus, Malus Royalty, and a single flower cultivar Malus Dolgo were compared by RNA-sequencing. The results showed that there were 1854 genes in overlapped DEGs among all sample comparisons in apple single and double flower varieties. A large number of development and hormone related DEGs were also recognized on the basis of GO and KEGG annotations, and most of the genes were found to be down-regulated in double flowers. Particularly, an AGL24-MADS-box gene (MD08G1196900) and an auxin responsive gene (MD13G1137000) were putatively key candidate genes in the development of double flower by weighted gene co-expression network analysis (WGCNA). The study provides insights into the complex molecular mechanism underlying the development of the double flower in apple.

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