Ribosome footprint profiling enables elucidating the systemic regulation of fatty acid accumulation in Acer truncatum

文献类型： 外文期刊

第一作者： Ma, Qiuyue

作者： Ma, Qiuyue;Li, Shushun;Wen, Jing;Zhu, Lu;Yan, Kunyuan;Du, Yiming;Li, Qianzhong;Wang, Yuxiao;Li, Shuxian;Yan, Liping;Xie, Zhijun;Lyu, Yunzhou;Shen, Fei

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关键词： Acer truncatum; Ribosome profiling; Transcriptome

期刊名称：BMC BIOLOGY （ 影响因子：5.4； 五年影响因子：7.1 ）

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年卷期： 2023 年 21 卷 1 期

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收录情况： SCI

摘要： BackgroundThe accumulation of fatty acids in plants covers a wide range of functions in plant physiology and thereby affects adaptations and characteristics of species. As the famous woody oilseed crop, Acer truncatum accumulates unsaturated fatty acids and could serve as the model to understand the regulation and trait formation in oil-accumulation crops. Here, we performed Ribosome footprint profiling combing with a multi-omics strategy towards vital time points during seed development, and finally constructed systematic profiling from transcription to proteomes. Additionally, we characterized the small open reading frames (ORFs) and revealed that the translational efficiencies of focused genes were highly influenced by their sequence features.ResultsThe comprehensive multi-omics analysis of lipid metabolism was conducted in A. truncatum. We applied the Ribo-seq and RNA-seq techniques, and the analyses of transcriptional and translational profiles of seeds collected at 85 and 115 DAF were compared. Key members of biosynthesis-related structural genes (LACS, FAD2, FAD3, and KCS) were characterized fully. More meaningfully, the regulators (MYB, ABI, bZIP, and Dof) were identified and revealed to affect lipid biosynthesis via post-translational regulations. The translational features results showed that translation efficiency tended to be lower for the genes with a translated uORF than for the genes with a non-translated uORF. They provide new insights into the global mechanisms underlying the developmental regulation of lipid metabolism.ConclusionsWe performed Ribosome footprint profiling combing with a multi-omics strategy in A. truncatum seed development, which provides an example of the use of Ribosome footprint profiling in deciphering the complex regulation network and will be useful for elucidating the metabolism of A. truncatum seed oil and the regulatory mechanisms.

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