RNA-Seq reveals the key pathways and genes involved in the light-regulated flavonoids biosynthesis in mango (Mangifera indica L.) peel
文献类型： 外文期刊
作者： Qian, Minjie 1 ; Wu, Hongxia 2 ; Yang, Chengkun 1 ; Zhu, Wencan 1 ; Shi, Bin 1 ; Zheng, Bin 2 ; Wang, Songbiao 2 ; Zhou, Kaibing 1 ; Gao, Aiping 4 ;
作者机构： 1.Hainan Univ, Sanya Nanfan Res Inst, Sanya, Peoples R China
2.Chinese Acad Trop Agr Sci, South Subtrop Crops Res Inst, Minist Agr, Key Lab Trop Fruit Biol, Zhanjiang, Peoples R China
3.Hainan Univ, Sch Hort, Key Lab Qual Regulat Trop Hort Crop Hainan Prov, Haikou, Peoples R China
4.Chinese Acad Trop Agr Sci, Trop Crops Genet Resources Inst, Haikou, Peoples R China
5.Minist Agr, Key Lab Crop Gene Resources & Germplasm Enhancemen, Haikou, Peoples R China
关键词： mango; flavonoids; bagging treatment; RNA-seq; transcription factor
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.6； 五年影响因子：6.8 ）
ISSN： 1664-462X
年卷期： 2023 年 13 卷
页码：
收录情况： SCI
摘要： IntroductionFlavonoids are important water soluble secondary metabolites in plants, and light is one of the most essential environmental factors regulating flavonoids biosynthesis. In the previous study, we found bagging treatment significantly inhibited the accumulation of flavonols and anthocyanins but promoted the proanthocyanidins accumulation in the fruit peel of mango (Mangifera indica L.) cultivar 'Sensation', while the relevant molecular mechanism is still unknown. MethodsIn this study, RNA-seq was conducted to identify the key pathways and genes involved in the light-regulated flavonoids biosynthesis in mango peel. ResultsBy weighted gene co-expression network analysis (WGCNA), 16 flavonoids biosynthetic genes were crucial for different flavonoids compositions biosynthesis under bagging treatment in mango. The higher expression level of LAR (mango026327) in bagged samples might be the reason why light inhibits proanthocyanidins accumulation in mango peel. The reported MYB positively regulating anthocyanins biosynthesis in mango, MiMYB1, has also been identified by WGCNA in this study. Apart from MYB and bHLH, ERF, WRKY and bZIP were the three most important transcription factors (TFs) involved in the light-regulated flavonoids biosynthesis in mango, with both activators and repressors. Surprisingly, two HY5 transcripts, which are usually induced by light, showed higher expression level in bagged samples. DiscussionOur results provide new insights of the regulatory effect of light on the flavonoids biosynthesis in mango fruit peel.
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