在基因表达中普遍的低占主导地位是阿拉比多普西斯·塔利亚纳杂交品种新兴生长轨迹的基础
Wei Yuan1, Fiona Beitel1, Thanvi Srikant1
1Department of Molecular Biology, Max Planck Institute for Biology Tübingen, 72076, Tübingen, Germany.
Genome biology
|September 4, 2023
概括
在Arabidopsis thaliana杂交物种中的遗传相互作用显示,低主导性或表达低于父母平均值是常见的. 这种非添加基因作用显著影响混合生长,与罕见的添加基因效应不同.
科学领域:
- 遗传学 遗传学 是一个
- 分子生物学分子生物学
- 植物科学 植物科学
背景情况:
- 复杂的特征受众多遗传变异的影响,具有附加性和非附加性相互作用.
- 杂交物提供了一个模型,通过创造新的等位基因组合来研究遗传相互作用类型的相对重要性.
研究的目的:
- 为了研究在Arabidopsis thaliana杂交品种中占主导地位 (同位点等位基因相互作用) 的流行率和影响.
- 评估添加性和非添加性基因表达和杂交特征 (如罗塞特大小) 之间的关系.
主要方法:
- 对141个Arabidopsis thaliana连接的随机交叉的转录组分析.
- 在F1杂交物中对添加性和非添加性基因表达模式的量化.
- 基因表达与罕见的等位基因负担和F1红尺寸的相关性分析.
主要成果:
- 添加基因作用是罕见的 (约. 300个基因),主要涉及应激反应和细胞死亡.
- 超过90%的基因表现出非添加性,主导表达低于F1杂交物中的父母平均值.
- 罕见的等位基因负担在主导基因中与F1红尺寸有很强的相关性,但不是附加基因.
结论:
- 低占主导地位是主要的基因作用,控制了Arabidopsis thaliana杂交品种的花生长轨迹.
- 这项研究为了解罕见调节性等位基因的支配性补充的分子基础和进化意义提供了基础.
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