在单个染色体驱动哈普洛型中发生冲突的基因素-14s
Meghan J Brady1, Anjali Gupta2, Jonathan I Gent3
1Department of Genetics, The University of Georgia, Athens Georgia 30602, USA.
Genetics
|May 14, 2025
概括
在玉米中介驱动系统 (异常染色体10和K10L2) 中的kinesin基因Trkin似乎有害,这表明它可能被清除或赋予未知的优势.
科学领域:
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
- 进化生物学 进化生物学
背景情况:
- 玉米有两个介质驱动系统,针对异性染色节点:异常染色体10 (Ab10) 和K10L2.
- Ab10使用KINDR/knob180和TRKIN/TR-1系统,其中KINDR/knob180主要驱动介质驱动.
- K10L2仅对TRKIN/TR-1进行编码,并且表现出较低的介质驱动.
研究的目的:
- 研究TRKIN/TR-1系统在玉米中介驱动中的作用.
- 为了确定Trkin在Ab10和K10L2单元型中的功能.
- 了解 Ab10.0 中特基因的进化维护.
主要方法:
- 长阅读测序组装K10L2单元型.
- 为了评估 Ab10 和 K10L2.2 中的 Trkin 基因功能,CRISPR 突变发生.
- 数学建模来预测特金的持久性.
主要成果:
- K10L2与Ab10.10的内部部分呈现同质性.
- 在 Ab10 上的Trkin 对异构体与正常染色体10 的异构体时,对驱动和健身有微弱的有害影响.
- 在Ab10或K10L2上的功能Trkin在与K10L2.2配对时,严重减少了Ab10驱动器.
结论:
- 在测试条件下,Trkin基因不会在Ab10中增强介质驱动力或健身.
- 特尔金在Ab10中的存在很可能是由于一种不具特征的优势或正在进行的净化.
- 数学建模表明,Trkin不太可能在Ab10种群中持续存在.
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