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논문 기본 정보

자료유형
학술저널
저자정보
김다혜 (국립한경대학교 원예생명공학과) 양주희 (농촌진흥청 국립농업과학원) 이주희 (농촌진흥청 국립농업과학원) 이종렬 (농촌진흥청 국립농업과학원) 임선형 (국립한경대학교 원예생명공학과)
저널정보
한국육종학회 한국육종학회지 한국육종학회지 제53권 제4호
발행연도
2021.12
수록면
380 - 391 (12page)
DOI
10.9787/KJBS.2021.53.4.380

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Plants grown under stress conditions generate excessive reactive oxygen species resulting in cell death. Therefore, plants activatethe protection mechanism via antioxidant accumulation. Anthocyanins are flavonoid-derived secondary metabolites with high antioxidantproperties. In this study, we analyzed and characterized the promoter region of RsMYB1, a positive regulator of anthocyanin biosynthesis. The RsMYB1 promoter was designed with four different fragment lengths (MP1, -1034; MP2, -830; MP3, -633; and MP4, -430 bp), andthen each RsMYB1 promoter region was fused into a GUS gene for Arabidopsis transformation. The expression patterns of the RsMYB1 promoterconstructs were analyzed at different developmental stages and under various abiotic stresses. The GUS expression pattern steadily increasedwith plant growth, and coincided with enzyme activity and a histochemical GUS assay. In response to drought, salt, sucrose, and low temperature,the GUS transcript level was highly expressed in MP4 in parallel with GUS enzyme activity. These assays indicated that the proximal region(-430 to -1 bp) of RsMYB1 was the core sequence that was induced by salt and low temperature. The expression level of RsMYB1 in theleaves of radish was highly activated and was consistent with the anthocyanin content under salt and low temperature conditions. These resultssuggest that induction of the RsMYB1 gene can activate the biosynthesis of anthocyanins, which are expected to help plants adapt to stressconditions due to their antioxidant activity.

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