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http://dx.doi.org/10.7740/kjcs.2021.66.3.240

Expression Analysis of Anthocyanin Biosynthetic Genes of Tassel and Silks in Gwangpyeongok and Dacheongok  

Go, Young Sam (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration)
Bae, Hwan Hee (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration)
Choi, Yu Chan (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration)
Son, Jae Han (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration)
Ha, Jun Young (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration)
Shin, Seong Hyu (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration)
Jung, Tae Wook (Department of Central Area Crop Science, National Institute of Crop Science, Rural Development Administration)
Publication Information
KOREAN JOURNAL OF CROP SCIENCE / v.66, no.3, 2021 , pp. 240-247 More about this Journal
Abstract
Anthocyanins are known to be involved in various functions such as antioxidant and antibacterial activities in plants. Although studies on anthocyanins in corn have been conducted recently, basic research related to anthocyanin biosynthesis is insufficient. In this study, we examined the molecular biological and physicochemical properties related to anthocyanin biosynthesis in the tassel and silks of Gwangpyeongok and Dacheongok cultivars. Anthocyanins were not synthesized in either the tassel or silks in Gwangpyeongok, whereas were synthesized in both in Dacheongok. The total anthocyanin content was approximately 30 times higher in the tassel and silks of Dacheongok than in those of Gwangpyeongok. In addition, C-3-G was measured only in the tassel of Dacheongok, and C-3-G, Pg-3-G, and M-3-G were 45.2 times, 27.3 times, and 37.6 times higher, respectively, in the silks of Dacheongok than of Gwangpyeongok. Expression of F3'H, DFR, and GST genes decreased in the tassel, and that of F3'H and DFR genes decreased in the silks of Gwangpyeongok. It was further confirmed that transcription factor P1 and R1 regulate the expression of anthocyanin biosynthetic genes in the tassel and silks, respectively, in Gwangpyeongok. Linoleic acid (C18:2) decreased by 6.6% and 10.9%, and linolenic acid (C18:3) increased by 8.5% and 8.5%, in the tassel and silks, respectively, of Gwangpyeongok compared to those of Dacheongok. Palmitic acid (C16:0) increased by 4.1% and oleic acid (C18:1) decreased by 2.1% in the silks of Gwangpyeongok compared to that in Dacheongok. In addition, the total fatty acid content in the tassel and silks increased by 10.3% and 30.4%, respectively, in Gwangpyeongok compared to that in Dacheongok. However, no significant results were observed in the analysis of phytosterol components. These results may be utilized as useful resources for the development of functional corn containing a large amount of anthocyanins.
Keywords
anthocyanin; corn; fatty acid; gene expression; phytosterol;
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