在由辅酶-CUC1相互作用介导的原始启动中,速度和稳健性之间的权衡
Shuyao Kong1,2, Mingyuan Zhu1,2,3,4, David Pan1,2
1Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, NY, 14853, USA.
Nature communications
|July 13, 2024
概括
杯状的Cotyledon1 (CUC1) 在Arabidopsis分离体发育过程中放大了辅酶噪声,损害了强度. 删除CUC1恢复了强度,但减缓了发展,揭示了速度-强度的权衡.
科学领域:
- 植物发育生物学植物发育生物学
- 系统生物学 系统生物学
- 分子遗传学 分子遗传学
背景情况:
- 发育强度确保了尽管有生物噪音,可复制的表型.
- 发展速度和稳健性之间的权衡是不太了解的.
- 阿拉比多普西斯分泌体的发育依赖于精确的辅酶最大定位.
研究的目的:
- 研究植物开发中的强度权衡背后的机制.
- 确定影响Arabidopsis分离体启动强度的遗传因素.
- 探索CUP-SHAPED COTYLEDON1 (CUC1) 在辅酶信号动态中的作用.
主要方法:
- 对与Arabidopsis.相关的myb-like 1 (drmy1) 突变的发展进行分析.
- 研究CUP-SHAPED COTYLEDON1 (CUC1) 在辅酶信号传递中的功能.
- 使用计算建模来模拟辅酶运输和最大形成.
- 关于增长率和强度的模型预测的实验验证.
主要成果:
- 在drmy1突变体中增加的CUC1表达增强了辅酶噪声,破坏了分离开始的强度.
- 从drmy1中去除CUC1可以通过允许auxin信号解决来恢复强大的分离启动.
- CUC1增强了形态发生的速度,但降低了对辅酶噪声的强度.
- 计算模型解释了CUC1对PIN FORMED1 (PIN1) 两极化的影响,并预测了增长率的影响.
结论:
- CUC1发挥着双重作用,促进发展速度,而牺牲了对噪音的强度.
- 发展速度和强度之间存在一个权衡,由诸如CUC1.0这样的因素调节.
- 降低全球增长率可以提高发展强度,为改善可重现性提供潜在的战略.
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