数字农科院2.0

甘蓝型油菜ACCase、DGAT2和船PC基因对氮素用量的应答

文献类型: 中文期刊

作者: 闫贵欣;陈碧云;许鲲;高桂珍;吕培军;伍晓明;李锋;李俊

作者机构:

关键词: 氮肥;甘蓝型油菜;含油量和蛋白质含量;基因表达水平;实时荧光定量PCR;nitrogen fertilizer; Brassica napus; oil and protein contents; gene expression level;quantitative RT-PCR

期刊名称:植物营养与肥料学报

ISSN: 1008-505X

年卷期: 2012 年 18 卷 006 期

页码: 1370-1377

收录情况: 北大核心 ; CSCD

摘要: 氮肥是生长发育需要的重要营养元素之一。为了研究氮肥对油菜蛋白与油脂含量以及其合成相关基因表达水平的影响,本研究以品种中双11和Parter(德国)为材料,检测N0、90、180和270kg/hm^2氮肥水平下种子含油量和蛋白质含量,并检测ACCase,DGAT2和PEPC基因在施氮肥(N180kg/hm^2)和未施氮肥植株不同发育时期种子中的表达水平。结果发现,随施氮量增加,含油量降低,蛋白质含量增加,且Patter含油量下降程度明显高于中双11。授粉后7-25d,ACCase和DGAT2的表达水平在两个品种施氮和未施氮条件下均无明显变化;授粉后31d,施氮与未施氮相比,两个基因在中双11中的表达量分别下降1倍和12倍,而在Patter中的表达量均上升约1倍。在施氮条件下,PEPC基因在两个品种的表达高峰期均提前,中双11由授粉后31d提前到13d,Parter由13d提前到7d,说明3个基因对氮肥的响应存在基因型的差异。

分类号: Q943.2%S635

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