There is provided a gene coding for the amino acid sequence listed as SEQ ID NO: 2 or SEQ ID NO: 70, for example. Co-expression of the 4'CGT gene and AS gene in a plant lacking natural aurone synthesis ability is carried out to successfully accumulate aurones and alter the flower color to have a yellow tint. In addition to the expression of both genes, the flavonoid pigment synthesis pathway of the host plant itself is inhibited to obtain flowers with a more defined yellow color.
                            例如,提供了一种编码 
SEQ ID NO: 2 或 
SEQ ID NO: 70 所列
氨基酸序列的
基因。在缺乏天然醛酮合成能力的植物中同时表达 4'CGT 
基因和 AS 
基因,可成功地积累醛酮并改变花色,使其呈现黄色。除了这两个
基因的表达外,寄主植物本身的黄
酮类色素合成途径也受到抑制,从而使花朵呈现更明确的黄色。