TTG1 具有较高的同源性,对石榴果实中花青素合成的调控同样是通过与 PgAn1 (bHLH)和 PgAn2(MYB)形成 MBW 转录复合体。杨梅中参与花青素合成调 控的WD40 转录因子为 MrWD40-1,这个基因不仅参与调控,还能够促进 MrbHLH1-MrMYB1 的转录,从而增强花青素的积累编辑于 2019-06-09 16:23 ...
草莓MYBMBW复合体花青素原花青素草莓(Fragaria×ananassa Duch.)是蔷薇科草莓属多年生草本植物,果实富含大量类黄酮物质,在未成熟的草莓果实中,主要是原花青素(Proanthocyanidins,PAs),随着草莓果实的成熟变红,花青素苷(Anthocyanins)的含量逐渐上升.在植物生长发育过程中,类黄酮物质能帮助植物抵御外界环境的胁迫,同时,作为...
此结果说明,RcbHLH 与全长 PavMYB10.1 互作,与 N 端、C 端片段均不互作,同时还与全长PavWD40 互作,说明 RcbHLH 通过与 PavMYB10.1 和 PavWD40 相互作用,从而形成一个 MYB-bHLH-WD40 (MBW )复合体在 植物体内发挥作用。 图 7 酵母共转化子在 SD/-Trp/-Leu/-His/-Ade 培养基的生长及 X-gal 显...
Transcriptional control of flavonoid biosynthesis: fine-tuning of the MYB-bHLH-WD40 (MBW) complex Flavonoids are synthesized through an important metabolic pathway that leads to the production of diverse secondary metabolites, including anthocyanins, fl... S Li,Corresponding author Invited review - 《...
其次,MBW转录复合体选择性调控杨梅5个花青苷合成基因启动子活性:双荧光素酶瞬时表达分析结果显示,当MrMYB1和MrbHLH1同时过量表达时,MrCHI,MrF3'H,MrDFRl,MrANS和MrUFGT启动子活性受到强烈诱导;MrWD40-1可增强这一诱导效应;此外,光照是该诱导进程中必需的环境因子之一.最后,对MBW转录复合体各成员间的物理互作...
WD40 transcription factors, a large gene family in eukaryotes, are involved in a variety of growth regulation and development pathways. WD40 plays an important role in the formation of MYB-bHLH-WD (MBW) complexes associated with anthocyanin synthesis, bu
PaTTG1.1 and PaTTG1.2 proteins interact with both bHLH and R2R3-MYB transcription factors in Arabidopsis to form MBW complexes, and similar protein interactions exist in P. acerifolia. In addition, these MBW complexes activated the expression of AtCPC and AtGL2 as well as AtDFR to regulate ...
genes (EBGs),for example,are mainly activat-ed by independent R2R3-MYBs, leading to the production of flavonols.Conversely, the activation of late biosynthesis genes (LBGs) leading to the production of PAs generally requires a ternary complex of transcription factors (MYB–bHLH–WD40,MBW),...
已知在拟南芥等模式植物中,MYB,bHLH和WD40三类转录因子可形成MYB-bHLH-WD40(MBW)蛋白复合体结合到次生代谢合成途径结构基因的启动子上,调控次生代谢产物的积累.然而目前还没有关于丹参中内源MBW转录复合体的相关报道.基于此,本研究以丹参为材料,克隆了SmTTG1基因全长,构建了酵母诱饵表达重组质粒pGBKT7-SmTTG1,通过...
采用了酵母双杂(Y2H)技术和荧光双分子互补技术(Bi FC)来验证牡丹中存在MYB-bHLH-WD40这一蛋白复合体,PsMYB1和PsWD40-1蛋白可以与PsbHLH1互作,而PsMYB1则不能与PsWD40-1互作,是与苹果中一致的MBW复合体调控模式.通过染色体步移技术,克隆牡丹花青苷合成途径中八个关键结构基因(PsCHS,PsCHI,PsF3H,PsF3'H,...