延长者复合体在早期光依赖的白的发育过程中不同调节 hypocotyl 和 cotyledons 的转录和翻译
Magdalena Jarosz-Ostrówka1,2, Małgorzata Kwaśniak-Owczarek3, Natalia Małecka1
1Department of Genetics, Faculty of Biology and Animal Science, Wrocław University of Environmental and Life Sciences, Kozuchowska 7, 51-631 Wrocław, Poland.
延长者复合体通过调节基因转录和翻译来影响植物的发育. 它在Arabidopsis thaliana突变中的损失会损害 hypocotyl 和cotyledon 发育,突出显示其在生长中的不同作用.
科学领域:
- 植物生物学 植物生物学
- 分子遗传学 分子遗传学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 阿拉比多普西斯·塔利亚纳的光形生成涉及光介导的骨干扩张和 hypocotyl 抑制.
- 延长器复合体通过表观遗传和tRNA修改影响基因表达.
- 长长的突变破坏了正常的光形发育.
研究的目的:
- 调查长长者复合体在Arabidopsis hypocotyl和cotyledon发育中的独特作用.
- 阐明elo3-6突变体中光形缺陷背后的分子机制.
- 确定Elongator对转录和翻译调节的贡献.
主要方法:
- RNA-Seq和miRNA-Seq用于分析elo3-6突变体中的基因表达.
- 突变体和三重突变体的表型分析 (elo3-6 urm11 urm12).
- 评估突变对翻译抑制剂的突变反应,如乙菌素.
主要成果:
- 这种elo3-6突变体表现出阴囊开口和阴囊延长的缺陷.
- 缺陷的hypocotyl与失调的叶绿体生理学,昼夜节律和辅酶反应有关.
- 带状腺发育问题与翻译受损和tRNA修饰缺陷相关.
- 延长器依赖的子-子相互作用对于子体的发育至关重要.
- 有证据表明,基于翻译效率的反循环调节mRNA的丰度.
结论:
- 延长器复合体在植物发育中起着双重作用,具有明显的转录和转化功能.
- 延长器对转录的调节对于 hypocotyl 的生长至关重要.
- 延长器的翻译调节对于正确的节骨发育至关重要.
- 了解 Elongator 的功能,可以了解光介导的植物生长调节.
更多相关视频
12:01Long-term, High-resolution Confocal Time Lapse Imaging of Arabidopsis Cotyledon Epidermis during Germination
Published on: December 31, 2012
07:42Rapid Analysis of Circadian Phenotypes in Arabidopsis Protoplasts Transfected with a Luminescent Clock Reporter
Published on: September 17, 2016
相关概念视频
RNA Polymerase II Accessory Proteins
Regulation of Expression at Multiple Steps
Transcription Elongation Factors
The transcription elongation is regulated via pausing of RNA polymerase on several occasions during transcription. In bacteria, these halts are necessary because the transcription of DNA into mRNA is coupled to the translation of that mRNA...
Transcription Elongation Factors
Eukaryotic Transcription Activators
The binding domains are capable of recognizing and interacting with regulatory sequences on the DNA. These...
Regulation of Expression Occurs at Multiple Steps
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
