The present invention provides two Myrica flavanone synthetase MrFLSs protein, which is derived from the double oxygenase family of the fruit of Myrica Myrica and its amino acid sequence SEQ:NO.18 and SEQ:NO.19. During the fruit development of bayberry, the expression of MrFLS1 gene was positively correlated with the accumulation of flavonol, while MrFLS2 was highly expressed in the fruit ripening, which was related to the increase of flavonol content in the later period. The present invention verifies the functions of MrFLS1 and MrFLS2 genes. The prokaryotic expression in vitro shows that MrFLS1 and MrFLS2 proteins can catalyze the formation of two hydro - ananenol, catalyze the formation of quercetin with two hydrogen quercetin, and MrFLS2 has high catalytic efficiency; the excessive expression of MrFLS1 or MrFLS2 in tobacco and the flavonoid of transgenic plants in tobacco The content of alcohol increased significantly. The invention can be applied to engineering microbes and plant genetic transformation.
【技术实现步骤摘要】
两个杨梅黄酮醇合成酶MrFLSs蛋白及其编码基因的应用
本专利技术属于分子生物学领域,涉及重组蛋白和基因工程,具体涉及两个杨梅黄酮醇合成酶MrFLSs蛋白及其编码基因的应用。技术背景FLS(EC1.14.11.23)属于FeⅡ/2-酮戊二酸盐依赖性双加氧酶家族,是合成黄酮醇化合物必不可少的关键酶之一,在2-酮戊二酸盐和氧气存在的条件下,它催化二氢黄酮醇发生去饱和反应,生成黄酮醇、琥珀酸盐、二氧化碳和水。黄酮醇广泛存在于植物根、茎、叶、花、果实和种子中,对植物生长发育和抵抗逆境等发挥着重要作用,包括调控生长素转运、促进侧根形成、影响花粉发育、抗紫外线、调节叶片气孔开度等。FLS基因在转录水平上的表达模式与植物黄酮醇的积累密切相关。拟南芥种子萌发过程中,白光照射能引起AtFLS1在不同组织中的差异性表达,并导致黄酮醇不同程度的积累。反义NtFLS后,烟草中无法检测到黄酮醇,而花粉也不能正常萌发成花粉管。杨梅(Morellarubra)属于我国特色水果,具有很好的医药学活性,这与其较高的黄酮类化合物含量密不可分,而黄酮醇是杨梅中主要的黄酮类化合物,通常以糖苷衍生物形 ...
【技术保护点】
两个杨梅黄酮醇合成酶MrFLSs蛋白,其特征在于,其氨基酸序列如SEQ:NO.18和SEQ:NO.9所示。
【技术特征摘要】
1.两个杨梅黄酮醇合成酶MrFLSs蛋白,其特征在于,其氨基酸序列如SEQ:NO.18和SEQ:NO.9所示。2.根据权利要求1所述的两个杨梅黄酮醇合成酶MrFLSs蛋白,其特征在于,所述蛋白编码的核苷酸序列如SEQ:NO.1和SEQ:NO.2所示。3.根据权利要求1所述的两个杨梅黄酮醇合成酶MrFLSs蛋白在工程微生物菌及植物遗传转化中的应用。4...
【专利技术属性】
技术研发人员:李鲜,邢梦云,曹运琳,任传宏,解林峰,徐昌杰,孙崇德,陈昆松,
申请(专利权)人:浙江大学,
类型:发明
国别省市:浙江,33
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