环境依赖的选择影响了大米的遗传性发育稳定性和特征道化.
Taryn S Dunivant1,2, Irina Ćalić3,4, Conor Gilligan3,5
1Department of Nematology and Department of Botany & Plant Sciences, University of California Riverside, Riverside, CA, USA.
bioRxiv : the preprint server for biology
|July 16, 2025
概括
道化,特征的稳定性,由于大米的干旱压力而减少. 这种发育稳定性是遗传的,在选择下进化,并由OsTGA5基因调节,为植物适应提供了洞察力.
科学领域:
- 植物遗传学和发育生物学.
- 进化生物学和适应.
- 分子遗传学和基因调节.
背景情况:
- 管道化对于发育稳定至关重要,尽管发生了遗传或环境变化,但仍能保持特征.
- 人们对环境压力,自然选择和遗传因素如何影响道化知之甚少.
- 了解道化的遗传基础是提高作物弹性的关键.
研究的目的:
- 在不同的田间条件下,研究大米 (Oryza sativa) 中微环境道的自然选择.
- 确定道化的遗传基础和进化动态.
- 探索基因表达,环境因素和发育稳定性之间的关系.
主要方法:
- 测量基因相同的米复制品的发育稳定性.
- 使用遗传映射和功能遗传实验来识别关键基因.
- 分析全基因组基因表达的随机性,并将道化与环境温度相关联.
主要成果:
- 干旱压力显著减少了运输,增加了发展的不稳定性.
- 道化被发现是遗传性的,并且在选择中,这表明它的可进化性.
- 确定了bZIP转录因子基因OsTGA5/rTGA2.3作为环境依赖的方式调节道的调节者.
- 较低的基因表达随机性与更高的道化相关,而源环境中的更高温度与增加的特征道化相关.
结论:
- 环境压力,如干旱,可以通过减少运输来损害发展的稳定性.
- 道化是一种可进化的特性,受自然选择和遗传因素的影响.
- OsTGA5在调节通道方面发挥着至关重要的作用,突出了适应环境变化的分子基础.
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