Effects of interfering transcription factor StMYB90-like on anthocyanin synthesis in colored potato
PAN Yang
WANG Lichun
FU Xuepeng
TIAN Guokui
WANG Haiyan
LI Fengyun
PANG Ze
LI Mingxue
Abstract：To clarify the regulatory mechanism of the transcription factor StMYB90-like in anthocyanin synthesis and metabolism,this study used the colored potato Heij ingang as the material.Based on the previously identified StMYB90-like gene through bioinformatics screening,an interference vector was further constructed and genetically trans-formed.Through fluorescence quantitative analysis,anthocyanin content determination,and performance observation of transgenic plants,it was found that interference with StMYB90-like expression significantly reduced their transcription levels.At the same time,the anthocyanin content in leaves decreased by 47.94％,the color of tubers became lighter,and the anthocyanin content in tubers decreased by 9.79％.The above results indicate that the gene StMYB90-like positively regulates anthocyanin synthesis in colored potatoes,likely by upregulating the expression of structural genes involved in anthocyanin biosynthesis,thereby modulating the synthesis and accumulation of anthocyanins in potato tissues.
Keywords：Colored potatoAnthocyaninGenetic transformationTranscription factorStMYB90-like
Publication Date：2025-10-05
Online Publishing Date：2025-11-05(First online date of this platform, not the publication date of the document)
Pages：5( 56-60 )