Transcriptome analysis reveals the effects of grafting on sugar and alpha-linolenic acid metabolisms in fruits of cucumber with two different rootstocks

文献类型： 外文期刊

第一作者： Zhao, Lili

作者： Zhao, Lili;Xu, Xin;Ye, Xueling;Qi, Hongyan;Zhao, Lili;Liu, Aiqun;Song, Tiefeng;Jin, Yazhong;Gao, Yang

作者机构：

关键词： Grafted cucumber; Transcriptome; Flavor quality; Sugar; alpha-Linolenic acid metabolism

期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：4.27； 五年影响因子：4.816 ）

ISSN： 0981-9428

年卷期： 2018 年 130 卷

页码：

收录情况： SCI

摘要： Flavor quality in cucumber is affected by different rootstocks, but the molecular mechanism is largely unclean. To clarify the differences of sugar and aromatic compounds, cucumber (cucumis sativus) fruits from plants of self grafted (SG) or grafted onto figleaf gourd (Cucurbita ficifolia; G1) or 'Weisheng No.1' rootstock (Cucurbita moschata xCucurbita moschata hybrids; G2) were performed the transcriptome analysis. We obtained 1013 and 920 differentially expressed genes (DEGs) from G1 and G2 compared to SG respectively, in which 453 genes were co-expressed. Functional annotations showed many DEGs were involved in glycolysis/gluconeogenesis metabolism, fructose metabolism and a-Linolenic acid metabolisms, 20 DEGs were selected from the 3 pathways to validate sequencing accuracy by quantitative real-time PCR. The gene relative expression levels were concurrent with RNA-seq results and sugar and aromatic compounds content phenotypes. Moreover, some vital transcript factors and transport proteins were analyzed. These findings indicate that different rootstocks could induce significantly changes in the physiological profiling and transcripts of sugar- and aromatic flavor-related genes. This study provides a novel insight into the molecular mechanisms of fruit quality regulated by candidate genes.

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