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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2016.1
- 수록면
- 333 - 340 (8page)
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초록· 키워드
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Plants of wheat cultivar Iksan370, which was recently produced by crossing paternal line Keumkang with maternal line Xian83, accumulate anthocyanins in their coleoptiles and seeds. However, the spatio-temporal regulation of anthocyanin biosynthesis genes in wheat remains poorly understood. Therefore, in the present study, we characterized wheat dihydroflavonol 4-reductase (DFR), which catalyzes the conversion of dihydroflavonol to leucoanthocyanidins during anthocyanin biosynthesis, using a heterologous expression system. The deduced amino acid sequence from full-length cDNA of wheat DFR cloned from young seedlings of Iksan370 (TaDFR-I) includes a well-conserved substrate-binding domain compared with previously identified DFRs. Furthermore, as expected, phylogenetic tree analysis placed TaDFR-I in the monocotyledonous clade. Introduction of TaDFR-I into the wild-type Arabidopsis Col-0 and dfr mutant backgrounds resulted in significant accumulation of anthocyanins in the respective transgenic plants. Similarly, TaDFR transcripts highly accumulated in Iksan370 wheat seedlings under various anthocyanin-inducing conditions, including low temperature, high salt and sugar levels, and UV-B illumination. Thus, we functionally characterized TaDFR-I from Iksan370 lines using a heterologous expression system and revealed the presence of transcriptional regulatory factors similar to those of Arabidopsis that regulate TaDFR expression in response to various abiotic stresses.
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참고문헌 (38)
참고문헌 신청
Ahmed N / 2009 / Anthocyanin accumulation and expression pattern of anthocyanin biosynthesis genes in developing wheat coleoptiles / Biol Plant 53:223~228
Ahmed NU / 2014 / Characterization of dihydroflavonol 4-reductase (DFR) genes and their association with cold and freezing stress in Brassica rapa / Gene 550:46~55
Beld M / 1989 / Flavonoid synthesis in Petunia hybrida: partial characterization of dihydroflavonol 4-reductase genes / Plant Mol Biol 13:491~502
Binkert M / 2014 / UV-B-responsive association of the Arabidopsis bZIP transcription factor ELONGATED HYPOCOTYL5 with target genes, including its own promoter / Plant Cell 26:4200~4213
Bongue-Bartelsman M / 1994 / Characterization of the gene encoding dihydroflavonol 4-reductase in tomato / Gene 138:153~157
Ahmed NU / 2014 / Characterization of dihydroflavonol 4-reductase (DFR) genes and their association with cold and freezing stress in Brassica rapa / Gene 550:46~55
Beld M / 1989 / Flavonoid synthesis in Petunia hybrida: partial characterization of dihydroflavonol 4-reductase genes / Plant Mol Biol 13:491~502
Binkert M / 2014 / UV-B-responsive association of the Arabidopsis bZIP transcription factor ELONGATED HYPOCOTYL5 with target genes, including its own promoter / Plant Cell 26:4200~4213
Bongue-Bartelsman M / 1994 / Characterization of the gene encoding dihydroflavonol 4-reductase in tomato / Gene 138:153~157
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