短串联重复的突变解释了Arabidopsis中丰富的特征遗传性
Zhi-Qin Zhang1,2,3, Juan Jiang1,2,3,4, Yong-Chao Xu1,2
1State Key Laboratory of Plant Diversity and Specialty Crops/State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China.
短串联重复 (STR) 突变驱动了遗传变异和进化. 我们的研究表明,STRs显著影响表型,并有助于复杂的特征遗传性,在遗传研究中经常被忽视.
科学领域:
- 遗传学 遗传学 是一个
- 进化生物学 进化生物学
- 植物科学 植物科学
背景情况:
- 短串联重复 (STRs) 是遗传变异和进化的关键驱动因素.
- STR突变显著影响表型多样性,但往往被低估.
研究的目的:
- 评估Arabidopsis thaliana中STRs的变异和突变率.
- 研究STR变异在基因表达,拼接和复杂特征中的作用.
主要方法:
- 使用了Arabidopsis thaliana (Col-0加入) 的突变积累线.
- 在Arabidopsis thaliana和Arabidopsis lyrata之间进行了比较基因组学.
- 分析了来自十个Arabidopsis thaliana加入的全基因组序列.
- 来自413个加入的综合RNA-seq数据用于表达和拼接关联分析.
主要成果:
- STR突变率显著超过单核酸多态化率.
- 在Arabidopsis thaliana和Arabidopsis lyrata之间观察到高STR周转率.
- 在Arabidopsis thaliana的STR中发现了广泛的长度和存在/缺席的变化.
- 确定了与基因表达,拼接和复杂特征相关的众多STR,有助于遗传性.
结论:
- STRs表现出快速的进化动态和大量的变化.
- STR变异是一个重要的,经常被忽视的,为复杂特征的遗传性做出贡献.
更多相关视频
12:42Fluorescence-microscopy Screening and Next-generation Sequencing: Useful Tools for the Identification of Genes Involved in Organelle Integrity
Published on: April 13, 2012
07:28High-throughput, Robust and Highly Time-flexible Method for Surface Sterilization of Arabidopsis Seeds
Published on: October 4, 2021
相关概念视频
Trihybrid Crosses
Some of Mendel’s crosses examined three pairs of contrasting characteristics. Such a cross is called a trihybrid cross. A trihybrid cross is a combination of three individual monohybrid crosses. For example, plant height (tall vs. short), seed shape (round vs. wrinkled), and seed color (yellow vs. green).
The F1 generation plants of a trihybrid cross are heterozygous for all three traits and produce eight gametes. Upon self-fertilization, these gametes have an equal...
Dihybrid Crosses
Law of Independent Assortment
Heritability
Overview of Transposition and Recombination
Monohybrid Crosses
