两个WRKY33的cis元素之间的协调,由相同的转录因子结合,赋予了Arabidopsis thaliana的潮湿适应
Bao Liu1, Yudan Zheng1, Shangling Lou1
1Key Laboratory for Bio-resources and Eco-environment & State Key Lab of Hydraulics & Mountain River Engineering, Sichuan Zoige Alpine Wetland Ecosystem National Observation and Research Station, Key Laboratory for Bio-resource and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610065, China.
阿拉比多普西斯·塔利亚纳 (Arabidopsis thaliana) 使用一种新的基因调节策略来幸存洪水. 转录因子WRKY70与WRKY33基因中的两个位点结合,在潮湿的环境中增强其表达.
科学领域:
- 植物分子生物学 植物分子生物学
- 植物生理学 植物生理学
- 遗传学和基因组学 遗传学和基因组学
背景情况:
- 植物拥有分子策略,包括N-降解通路和转录调节,以管理洪水引起的缺氧.
- 阿拉比多普西斯塔利亚纳适应缺氧需要复杂的遗传机制.
- 环境因素,如湿度,影响植物对压力的反应.
研究的目的:
- 揭示Arabidopsis thaliana用于应对低氧的新型分子策略.
- 研究转录因子WRKY70在潜水压力下调节基因表达中的作用.
- 阐明植物应激适应中的双 cis 元素相互作用机制.
主要方法:
- 确定了一种新型的调节机制,涉及单一的转录因子和两个相同的cis元素.
- 研究了 WRKY70 与 WRKY33.3.3 的促进子和内子区域中 cis 元素的相互作用.
- 在潜水压力下,Arabidopsis thaliana在潮湿和干旱的加入中比较基因表达模式.
主要成果:
- 在潮湿的条件下,WRKY70在WRKY33的促进子和内子区域中与相同的cis元素结合,增强基因表达.
- 在干旱的条件下,WRKY70主要与内部cis元素结合,导致WRKY33的表达减少.
- 一个关键的促进物cis元素存在于潮湿的加入中,但不在干燥的加入中,这表明息地特定的调节.
结论:
- 涉及WRKY70和WRKY33的独特的双元素调节机制对于Arabidopsis thaliana适应潮湿,容易淹没的环境至关重要.
- 这种协调调节使植物能够根据环境线索优化基因表达以提高低氧耐受性.
- 这些发现揭示了植物应激反应和适应过程中的转录控制的新层.
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Transcription
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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