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中文摘要：
MADS—box基因编码的蛋白为转录因子，在被子植物花发育调控中发挥关键作用。其中，PI-like基因主要调控花瓣和雄蕊的形成。利用3’-cDNA末端快速扩增技术，从人参花蕾中克隆得到1个PI-like基因，命名为PgPI。该基因的3’端序列长558bp，编码186个氨基酸，GC含量为41．9％。序列比对结果显示，PgPI与HhPI（Hedera helix，ADM88561）的相似度为87％。聚类分析结果表明，人参与洋常春藤的PI-like基因聚为一支，进化距离较其他物种近。
英文摘要：
As transcriptional regulation factors, MADS-Box proteins play key roles in flower development of angiosperms. The PI-like genes control the identity of petals and stamens. A homologue of PI, designated as PgPI, was isolated from cultivar ginseng flower buds by rapid amplification of cD- NA ends （RACE）. The partial cDNA sequence of PgPI gene was 558 bp in length, which encoded a protein of 186 amino acids. The GC content was 41.9%. The alignment showed that PgPI had a high similarity with HhPI （87%）（Hedera helix, ADM88561 ）. The clustering analysis showed that PgPI and HhPI were in the same branch.
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