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Large-scale RNAseq analysis reveals new insights into the key genes and regulatory networks of anthocyanin biosynthesis during development and stress in cassava

文献类型： 外文期刊

作者： Fu, Lili 1 ; Ding, Zehong 1 ; Tie, Weiwei 1 ; Yan, Yan 1 ; Hu, Wei 1 ; Zhang, Jiaming 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Hainan Key Lab Biosafety Monitoring & Mol Breedin, Key Lab Biol & Genet Resources Trop Crops, Inst Trop Biosci & Biotechnol, Xueyuan Rd 4, Haikou 571101, Hainan, Peoples R China

2.Chinese Acad Trop Agr Sci, Sanya Res Inst, Yumin Rd 7, Sanya 572025, Peoples R China

3.Chinese Acad Trop Agr Sci, Hainan Inst Trop Agr Resources, Hainan Key Lab Protect & Utilizat Trop Bioresourc, Xueyuan Rd 4, Haikou 571101, Hainan, Peoples R China

关键词： Manihot esculenta; Large-scale transcriptomic analysis; Coexpression network; Hub gene; Anthocyanin biosynthesis; Development and stress

期刊名称：INDUSTRIAL CROPS AND PRODUCTS （ 影响因子：5.645； 五年影响因子：5.749 ）

ISSN： 0926-6690

年卷期： 2021 年 169 卷

页码：

收录情况： SCI

摘要： Anthocyanins play key roles in plant development and response to various biotic and abiotic stresses including drought, cold, and pathogens. However, the key genes and regulatory networks relevant to anthocyanin biosynthesis remain largely elusive in cassava (Manihot esculenta L.), an important starchy root crop in tropical and sub-tropical regions. In this study, 465 RNAseq data were gathered to construct gene coexpression networks in cassava, resulting in a total of 30 coexpression modules (M1-M30). The associations of module-tissue or module-stress/development were systematically analyzed. Meanwhile, the hub genes and molecular roles were extensively dissected for each module, respectively. Notably, module M5 was significantly enriched in phenylpropanoid and flavonoid metabolisms, and several crucial genes participating in anthocyanin biosynthesis were included, suggesting a major role of M5 in anthocyanin biosynthesis in cassava. Coexpression analyses further revealed that phenylalanine ammonia-lyase 1 (PAL1), anthocyanidin synthase (ANS), and flavanone 3-hydroxylase (F3H) were the hub genes with most connections to others. Four transcription factors and three cis-regulatory motifs which might involve in anthocyanin biosynthesis regulation were also explored. Finally, a conserved coexpression network, covering the entire pathway of anthocyanin biosynthesis, was revealed among cassava, Arabidopsis thaliana (L.), and rice (Oryza sativa L.). The results provide valuable information to the key genes and regulatory networks of anthocyanin biosynthesis, and also lay a useful foundation for the genetic improvement in cassava.

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