数字农科院2.0

甘蓝型油菜BnLEC1.A07基因启动子在不同含油量品系中的克隆与活性分析

文献类型: 中文期刊

作者: 王延甲;范世航;刘静;郑明;华玮

作者机构:

关键词: BnLEC1;启动子;活性;GUS;LUC

期刊名称:中国油料作物学报

ISSN: 1007-9084

年卷期: 2021 年 43.0 卷 3.0 期

页码:

收录情况: CSCD(2020-2021年度) ; 农林核心(2020版) ; 科技核心(2020版)

摘要: 为了进一步研究BnLEC1基因对油脂生物合成的影响,以高油品系61616和低油品系51070为材料,进行了转录组和定量PCR分析。结果表明,BnLEC1.A07基因在61616品系中的表达水平明显高于51070品系。对启动子PLEC161616(1829 bp)和PLEC151070(1824 bp)进行了克隆和序列比较。结果表明,两个启动子之间存在大量的SNP和InDel,其中以单碱基SNP最为丰富。顺式作用元件分析表明,PLEC161616比PLEC151070多1个CAAT-box和2个茉莉酸反应元件,缺少1个细胞周期调控元件和2个非生物胁迫反应元件。随后我们构建了包含该启动子的GUS融合载体和LUC融合载体。烟草叶片瞬时转化后的GUS染色、LUC荧光显像和荧光素酶活性分析显示,PLEC161616的活性高于PLEC151070。综合结果表明,BnLEC1.A07基因在不同品系中的表达水平与其含油量呈正相关,PLEC161616比PLEC151070具有更强的启动子活性。本研究为进一步探讨脂肪合成基因BnLEC1.A07在不同油菜品系中的调控机制提供了理论依据。

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