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Updated: May 11, 2026

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Environmentally Induced Heritable Changes in Flax
Published on: January 27, 2011
植物对压力的跨代记忆
Jean Molinier1, Gerhard Ries, Cyril Zipfel
1Friedrich Miescher Institute for Biomedical Research, Maulbeerstrasse 66, CH-4058 Basel, Switzerland.
Nature
|August 8, 2006
概括
环境压力可以诱导植物的持久基因组变化. 这些变化,包括增强的同源重组,即使没有持续的压力,也会传给后代,这可能有助于适应.
科学领域:
- 植物生物学 植物生物学
- 遗传学 是一个遗传学.
- 环境科学环境科学
背景情况:
- 植物面临着环境压力,如光,水,盐,温度和病原体.
- 压力可以改变植物生理和基因组,但基因组变化的跨代遗传不清楚.
研究的目的:
- 为了调查植物中压力诱导的基因组变化是否跨代可遗传.
- 为了确定环境因素是否可以增加基因组灵活性,在随后的,未经处理的世代.
主要方法:
- 阿拉比多普西斯泰利亚纳被用紫外线C辐射或鞭治疗.
- 在一个转基因记者体内测量了体质同源重组.
- 通过母系和父系线对重组变化的遗传性进行了评估.
主要成果:
- 紫外线C或鞭毛素治疗增加了体质同源重组.
- 在随后的未经治疗的几代人中,复合水平的增加仍然存在.
- 这种表观遗传特征是通过母系和父系传播的,并且是主导的.
结论:
- 环境因素诱导了基因组灵活性,这种灵活性在几代人中持续存在.
- 这种遗传的超重组状态可能会增强植物的适应潜力.
- 基因组变化不依赖于持续存在的压力或转基因等位基因.
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Transcription
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Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
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Transcription Can Produce Different Kinds...
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