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大豆科学  2009 

大豆叶片异黄酮含量与PAL基因相对表达量的关系

DOI: 10.11861/j.issn.1000-9841.2009.04.0670, PP. 670-673

Keywords: 大豆异黄酮,苯丙氨酸解氨酶,相对表达量

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Abstract:

苯丙氨酸解氨酶(PAL)是苯丙氨酸代谢途径的进入点酶,也是异黄酮合成的关键酶之一。为了分析大豆叶片中异黄酮含量与苯丙氨酸解氨酶(PAL)基因表达量的关系,采用砂培试验,测定了不同生育时期大豆叶片总异黄酮及大豆黄素、黄豆黄素、染料木素的含量,同时测定了相应各生育时期大豆叶片中苯丙氨酸解氨酶(PAL)基因的相对表达量。结果表明:大豆叶片中大豆异黄酮总含量及3种苷元组份含量与叶片中苯丙氨酸解氨酶(PAL)基因的相对表达量有一个协同增减的趋势;在初花期(R1)大豆叶片中的异黄酮总含量和三种苷元组份含量及苯丙氨酸解氨酶(PAL)基因相对表达量均出现一个峰值。

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