Transcriptional regulation of flavonoid biosynthesis in nectarine (Prunus persica) by a set of R2R3 MYB transcription factors
MetadataShow full item record
Background: Flavonoids such as anthocyanins, flavonols and proanthocyanidins, play a central role in fruit colour, flavour and health attributes. In peach and nectarine (Prunus persica) these compounds vary during fruit growth and ripening. Flavonoids are produced by a well studied pathway which is transcriptionally regulated by members of the MYB and bHLH transcription factor families. We have isolated nectarine flavonoid regulating genes and examined their expression patterns, which suggests a critical role in the regulation of flavonoid biosynthesis. Results: In nectarine, expression of the genes encoding enzymes of the flavonoid pathway correlated with the concentration of proanthocyanidins, which strongly increases at mid-development. In contrast, the only gene which showed a similar pattern to anthocyanin concentration was UDP-glucose-flavonoid-3-O-glucosyltransferase (UFGT), which was high at the beginning and end of fruit growth, remaining low during the other developmental stages. Expression of flavonol synthase (FLS1) correlated with flavonol levels, both temporally and in a tissue specific manner. The pattern of UFGT gene expression may be explained by the involvement of different transcription factors, which up-regulate flavonoid biosynthesis (MYB10, MYB123, and bHLH3), or repress (MYB111 and MYB16) the transcription of the biosynthetic genes. The expression of a potential proanthocyanidin-regulating transcription factor, MYBPA1, corresponded with proanthocyanidin levels. Functional assays of these transcription factors were used to test the specificity for flavonoid regulation. Conclusions: MYB10 positively regulates the promoters of UFGT and dihydroflavonol 4-reductase (DFR) but not leucoanthocyanidin reductase (LAR). In contrast, MYBPA1 trans-activates the promoters of DFR and LAR, but not UFGT. This suggests exclusive roles of anthocyanin regulation by MYB10 and proanthocyanidin regulation by MYBPA1. Further, these transcription factors appeared to be responsive to both developmental and environmental stimuli.
Showing items related by title, author, creator and subject.
Leveraging cross-species transcription factor binding site patterns: from diabetes risk loci to disease mechanisms Claussnitzer M; Dankel SN; Klocke B; Grallert H; Glunk V; Berulava T; Lee H; Oskolkov N; Fadista J; Ehlers K; Wahl S; Hoffmann C; Qian K; Rönn T; Riess H; Müller-Nurasyid M; Bretschneider N; Schroeder T; Skurk T; Horsthemke B; DIAGRAM Consortium; Spieler D; Klingenspor M; Seifert M; Kern MJ; Mejhert N; Dahlman I; Hansson O; Hauck SM; Blüher M; Arner P; Groop L; Illig T; Suhre K; Hsu YH; Mellgren G; Hauner H; Laumen H (2014)Genome-wide association studies have revealed numerous risk loci associated with diverse diseases. However, identification of disease-causing variants within association loci remains a major challenge. Divergence in gene ...
Genome-Wide Transcriptional Changes and Lipid Profile Modifications Induced by Medicago truncatula N5 Overexpression at an Early Stage of the Symbiotic Interaction with Sinorhizobium meliloti Santi C; Molesini B; Guzzo F; Pii Y; Vitulo N; Pandolfini T (MDPI AG, 2017)Plant lipid-transfer proteins (LTPs) are small basic secreted proteins, which are characterized by lipid-binding capacity and are putatively involved in lipid trafficking. LTPs play a role in several biological processes, ...
Tin A; Marten J; Halperin Kuhns VL; Li Y; Wuttke M; Kirsten H; Sieber KB; Qiu C; Gorski M; Yu Z; Giri A; Sveinbjornsson G; Li M; Chu AY; Hoppmann A; O'Connor LJ; Prins B; Nutile T; Noce D; Akiyama M; Cocca M; Ghasemi S; van der Most PJ; Horn K; Xu Y; Fuchsberger C; Sedaghat S; Afaq S; Amin N; Ärnlöv J; Bakker SJL; Bansal N; Baptista D; Bergmann S; Biggs ML; Biino G; Boerwinkle E; Bottinger EP; Boutin TS; Brumat M; Burkhardt R; Campana E; Campbell A; Campbell H; Carroll RJ; Catamo E; Chambers JC; Ciullo M; Concas MP; Coresh J; Corre T; Cusi D; Felicita SC; de Borst MH; De Grandi A; de Mutsert R; de Vries APJ; Delgado G; Demirkan A; Devuyst O; Dittrich K; Eckardt KU; Ehret G; Endlich K; Evans MK; Gansevoort RT; Gasparini P; Giedraitis V; Gieger C; Girotto G; Gögele M; Gordon SD; Gudbjartsson DF; Gudnason V; Haller T; Hamet P; Harris TB; Hayward C; Hicks AA; Hofer E; Holm H; Huang W; Hutri-Kähönen N; Hwang SJ; Ikram MA; Lewis RM; Ingelsson E; Jakobsdottir J; Jonsdottir I; Jonsson H; Joshi PK; Josyula NS; Jung B; Kähönen M; Kamatani Y; Kanai M; Kerr SM; Kiess W; Kleber ME; Koenig W; Kooner JS; Körner A; Kovacs P; Krämer BK; Kronenberg F; Kubo M; Kühnel B; La Bianca M; Lange LA; Lehne B; Lehtimäki T; Liu J; Loeffler M; Loos RJF; Lyytikäinen LP; Magi R; Mahajan A; Martin NG; März W; Mascalzoni D; Matsuda K; Meisinger C; Meitinger T; Metspalu A; Milaneschi Y; O'Donnell CJ; Wilson OD; Gaziano JM; Mishra PP; Mohlke KL; Mononen N; Montgomery GW; Mook-Kanamori DO; Müller-Nurasyid M; Nadkarni GN; Nalls MA; Nauck M; Nikus K; Ning B; Nolte IM; Noordam R; O'Connell JR; Olafsson I; Padmanabhan S; Penninx BWJH; Perls T; Peters A; Pirastu M; Pirastu N; Pistis G; Polasek O; Ponte B; Porteous DJ; Poulain T; Preuss MH; Rabelink TJ; Raffield LM; Raitakari OT; Rettig R; Rheinberger M; Rice KM; Rizzi F; Robino A; Rudan I; Krajcoviechova A; Cifkova R; Rueedi R; Ruggiero D; Ryan KA; Saba Y; Salvi E; Schmidt H; Schmidt R; Shaffer CM; Smith AV; Smith BH; Spracklen CN; Strauch K; Stumvoll M; Sulem P; Tajuddin SM; Teren A; Thiery J; Thio CHL; Thorsteinsdottir U; Toniolo D; Tönjes A; Tremblay J; Uitterlinden AG; Vaccargiu S; van der Harst P; van Duijn CM; Verweij N; Völker U; Vollenweider P; Waeber G; Waldenberger M; Whitfield JB; Wild SH; Wilson JF; Yang Q; Zhang W; Zonderman AB; Bochud M; Wilson JG; Pendergrass SA; Ho K; Parsa A; Pramstaller PP; Psaty BM; Böger CA; Snieder H; Butterworth AS; Okada Y; Edwards TL; Stefansson K; Susztak K; Scholz M; Heid IM; Hung AM; Teumer A; Pattaro C; Woodward OM; Vitart V; Köttgen A (2019)Elevated serum urate levels cause gout and correlate with cardiometabolic diseases via poorly understood mechanisms. We performed a trans-ancestry genome-wide association study of serum urate in 457,690 individuals, ...