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Integrated metabolomic and transcriptomic analyses of regulatory mechanisms associated with uniconazole-induced dwarfism in banana

文献类型： 外文期刊

作者： Qin, Liuyan 1 ; Li, Chaosheng 1 ; Guo, Chenglin 3 ; Wei, Liping 1 ; Tian, Dandan 1 ; Li, Baoshen 1 ; Wei, Di 1 ; Zhou, Wei 1 ; Long, Shengfeng 1 ; He, Zhangfei 1 ; Huang, Sumei 1 ; Wei, Shaolong 1 ;

作者机构： 1.Guangxi Acad Agr Sci, Biotechnol Res Inst, Nanning 530007, Peoples R China

2.Guangxi Acad Agr Sci, Biotechnol Res Inst, Natl Local Joint Engn Res Ctr Genet Improvement &, Natl Trop Fruit Variety improvement Ctr Guangxi Ba, Nanning 530007, Peoples R China

3.Guangxi Acad Agr Sci, Inst Plant Protect, Nanning 530007, Peoples R China

关键词： Banana dwarfing; Uniconazole; Metabolome; Transcriptome; Flavonoid synthesis

期刊名称：BMC PLANT BIOLOGY （ 影响因子：5.3； 五年影响因子：5.9 ）

ISSN： 1471-2229

年卷期： 2022 年 22 卷 1 期

页码：

收录情况： SCI

摘要： Background: Uniconazole is an effective plant growth regulator that can be used in banana cultivation to promote dwarfing and enhance lodging resistance. However, the mechanisms underlying banana dwarfing induced by uniconazole are unknown. In uniconazole-treated bananas, gibberellin (GA) was downregulated compared to the control groups. An integrative analysis of transcriptomes and metabolomes was performed on dwarf bananas induced by uniconazole and control groups. The key pathways involved in uniconazole-induced dwarfism in banana were determined according to the overlap of KEGG annotation of differentially expressed genes and (DEGs) differential abundant metabolites (DAMs). Results: Compared with the control groups, the levels of some flavonoids, tannins, and alkaloids increased, and those of most lipids, amino acids and derivatives, organic acids, nucleotides and derivatives, and terpenoids decreased in uniconazole-treated bananas. Metabolome analysis revealed the significant changes of flavonoids in uniconazole-treated bananas compared to control samples at both 15 days and 25 days post treatment. Transcriptome analysis shows that the DEGs between the treatment and control groups were related to a series of metabolic pathways, including lignin biosynthesis, phenylpropanoid metabolism, and peroxidase activity. Comprehensive analysis of the key pathways of co-enrichment of DEGs and DAMs from 15 d to 25 d after uniconazole treatment shows that flavonoid biosynthesis was upregulated. Conclusions: In addition to the decrease in GA, the increase in tannin procyanidin B1 may contribute to dwarfing of banana plants by inhibiting the activity of GA. The increased of flavonoid biosynthesis and the change of lignin biosynthesis may lead to dwarfing phenotype of banana plants. This study expands our understanding of the mechanisms underlying uniconazole-induced banana dwarfing.

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