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Functional characterization of key structural genes in rice flavonoid biosynthesis
Flavones were identified as the major flavonoid class in the non-pigmented T65 seedlings in which the single-copy OsF3H gene was not expressed and competition between flavone and anthocyanin pathways was evidenced by the significant reduction of tricin accumulation in the T65-Plw seedlings. Expand
An anther-specific dihydroflavonol 4-reductase-like gene (DRL1) is essential for male fertility in Arabidopsis.
Arabidopsis contains only one functional dihydroflavonol 4-reductase (DFR) gene, but several DFR-like genes encoding proteins with the conserved NAD(P)H binding domain, and DRL1 may be involved in a novel metabolic pathway essential for pollen wall development. Expand
Cinnamon bark proanthocyanidins as reactive carbonyl scavengers to prevent the formation of advanced glycation endproducts.
- Xiaofang Peng, Ka-Wing Cheng, +5 authors Mingfu Wang
- Chemistry, Medicine
- Journal of agricultural and food chemistry
- 20 February 2008
This is the first report that proanthocyanidins can effectively scavenge reactive carbonyl species and thus inhibit the formation of AGEs, which show great potential to be developed as agents to alleviate diabetic complications. Expand
A Stilbene Synthase Gene (SbSTS1) Is Involved in Host and Nonhost Defense Responses in Sorghum1
The data demonstrated that SbCHS2 encodes a typical CHS that synthesizes naringenin chalcone, which is necessary for the formation of different flavonoid metabolites, suggesting that sorghum accumulates stilbene-derived defense metabolites in addition to the well-characterized 3-deoxyanthocyanidin phytoalexins. Expand
CYP93G2 Is a Flavanone 2-Hydroxylase Required for C-Glycosylflavone Biosynthesis in Rice1[W]
In vitro and in planta evidence is provided that the rice P450 CYP93G2 protein encoded by Os06g01250 is a functional flavanone 2-hydroxylase, conclusively assigned as the first enzyme that channels flavanones to C-glycosylflavone biosynthesis in rice. Expand
Molecular dissection of the pathogen-inducible 3-deoxyanthocyanidin biosynthesis pathway in sorghum.
It is revealed that 3-deoxyanthocyanidin accumulation and SbDFR3 expression were induced by methyl jasmonate treatment in sorghum roots but the stimulation effects were antagonized by salicylic acid. Expand
Molecular characterization and in silico expression analysis of a chalcone synthase gene family in Sorghum bicolor
It is proposed that sorghum CHS8 has evolved new enzymatic functions that are involved in the synthesis of defence-related flavonoids, such as the 3-deoxyanthocyanidins, during fungal infection. Expand
Constitutive accumulation of cis-piceid in transgenic Arabidopsis overexpressing a sorghum stilbene synthase gene.
- C. Y. Yu, C. Lam, K. Springob, J. Schmidt, I. Chu, C. Lo
- Biology, Medicine
- Plant & cell physiology
- 1 July 2006
To examine its biochemical function in planta, SbSTS1 was overexpressed in transgenic Arabidopsis and metabolic analysis revealed that cis-resveratrol glucoside (piceid) accumulated as the major stilbene in the transgenic lines. Expand
Conserved metabolic steps for sporopollenin precursor formation in tobacco and rice.
- Yanbing Wang, Ying-Chen Lin, J. So, Yegang Du, C. Lo
- Biology, Medicine
- Physiologia plantarum
- 1 September 2013
Investigation of the metabolic steps catalyzed by the anther-specific acyl-CoA synthetase, polyketide synthase and tetraketide α-pyrone reductase resulted in the production of reduced tetRAketid α-pyrones which appear to represent common sporopollenin fatty-acyl precursors essential for male fertility in taxonomically distinct plant species. Expand
Identification of flavone phytoalexins and a pathogen-inducible flavone synthase II gene (SbFNSII) in sorghum
- Yegang Du, Hung Chu, Mingfu Wang, I. Chu, C. Lo
- Biology, Medicine
- Journal of experimental botany
- 10 December 2009
SbFNSII appears to share a similar catalytic mechanism with the licorice and Medicago truncatula FNSIIs (CYP93B subfamily) by converting flavanones to flavone through the formation of 2-hydroxyflavanones. Expand