文献类型： 外文期刊

作者： Liu, Yuhui ¹ ; Zeng, Yuting ² ; Li, Yuanming ³ ; Zhen Liu ¹ ; Kui Lin-Wang ⁴ ; Espley, Richard, V ⁴ ; Allan, Andrew C. ⁴ ;

作者机构： 1.Gansu Agr Univ, Gansu Prov Key Lab Aridland Crop Sci, Lanzhou 730070, Peoples R China

2.Tibet Acad Agr & Anim Husb Sci, Lasa 850000, Peoples R China

3.Gansu Agr Univ, Coll Hort, Lanzhou 730070, Peoples R China

4.New Zealand Inst Plant & Food Res Ltd Plant & Foo, Private Bag 92169, Auckland 1142, New Zealand

关键词： Potato; MYB-related transcription factor; Expression profiles; Anthocyanin biosynthesis; Drought stress

期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：6.953； 五年影响因子：6.737 ）

ISSN： 0141-8130

年卷期： 2020 年 164 卷

页码：

收录情况： SCI

摘要： The MYB transcription factors (TFs) comprise a major TF family in the plant kingdom. Studies increasingly show that MYB-related genes drive physiological functions in plants. However, little is known regarding their regulatory networks and downstream pathways in potato. We conducted a genome-wide analysis of MYB TFs and related proteins in potato (Solanum tuberosum, abbreviated as St), and identified 138 StMYB-related TFs that were phylogenetically classified into three distinct subgroups based on highly conserved gene structures, consensus motifs and protein domain architecture. Segmental duplication events were detected in the StMYB-related gene family by collinearity analysis, which likely contributed to the expansion of this family. Synteny analysis indicated that 41 StMYB-related geneswere orthologous to Arabidopsis and 24 to wheat. In addition, RNA-seq analysis identified several tissue-specific and abiotic stress-responsive StMYB-related genes. To determine a potential role of these genes in anthocyanin biosynthesis and drought response, we analyzed the transcriptomes of the white, pigmented, drought-sensitive ('Atlantic') and drought-resistant ('Qingshu No.9') tetraploid potato cultivars from three flowering stages: early, peak (full blooms) and late (foliage falling). The interaction networks of StMYB-related proteins that were differentially expressed between pigmented versus white, as well as the drought-tolerant versus sensitive cultivars were also predicted. Our findings lay the foundation for prospective functional studies of potato StMYB-related TFs. (C) 2020 Elsevier B.V. All rights reserved.