文献类型： 外文期刊
作者： Wu, Juan 1 ; Wang, Peijie 1 ; Xie, Rui 2 ; Nie, Hushuai 1 ; Wu, Xiaojuan 1 ; Ma, Yu 1 ; Lu, Chunxing 2 ; Yang, Enze 1 ; Li, Nan 1 ; Ma, Yanhong 1 ;
作者机构： 1.Inner Mongolia Agr Univ, Agr Coll, Hohhot, Peoples R China
2.Inner Mongolia Acad Agr & Anim Husb Sci, Hohhot, Peoples R China
关键词：
Colored potato; Flavonoids;
期刊名称：BMC PLANT BIOLOGY （ 影响因子：4.8； 五年影响因子：5.4 ）
ISSN： 1471-2229
年卷期： 2025 年 25 卷 1 期
页码：
收录情况： SCI
摘要： BackgroundThe potato (Solanum tuberosum L.) is a globally significant tuber crop, and colored potatoes, as a unique cultivar of potato, have garnered considerable attention from scholars in recent years.ResultStMYB308L, belonging to R2R3-MYB, is 804 bp in length and encodes 267 amino acids, which are locatized in the nucleus. The expression of StMYB308L could be regulated under GA3 and ethylene glycol treatment, and was more significant in purple potato tubers flesh under different temperature treatments. Over-expression StMYB308L transgenic potato and tobacco plants were obtained through genetic transformation. The stalks of transgenic potato was deepened in color, and the expression of key genes related to flavonoid synthesis, StCHS, StF3'5 H, StCHI and StDFR, was significantly increased. The petal color of transgenic tobacco was deepened, and the anthocyanin content, flavonoid content and total antioxidant capacity in trangenic petals were higher than those of wild-type tobacco. A total of 20,775 differentially expressed genes (DEGs) were obtained between transgenic tobacco and wild-type tobacco by transcriptomics, and they were mainly enriched in secondary metabolite synthesis, phytohormone signaling, starch and sucrose metabolism, phenylpropane biosynthesis, flavonoid biosynthesis and other pathways.ConclusionsFurther analysis indicated that overexpression of StMYB308L up-regulated the expression pattern of genes Nt4CLs, NtDFRs, NtANSs, and NtBZ1s, which involved in the flavonoids, anthocyanins, flavonoid and anthocyanin accumulation.
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