相关实验视频
Updated: Mar 11, 2026

08:02
Robotic Sensing and Stimuli Provision for Guided Plant Growth
Published on: July 1, 2019
8.6K
阐明工程植物器官大小的设计原则
Tawni Bull1, Jared Van Blair1, Sam Sutton1
1Department of Biology, Colorado State University, Fort Collins, CO 80521.
概括
数学模型引导合成转录因子 (SynTFs) 通过调节基因表达来可预测地设计作物植物器官大小. 这种方法可以精确控制植物形态,加速跨物种的作物改进.
科学领域:
- 植物生物学 植物生物学
- 合成生物学 合成生物学
- 数学建模的数学建模
背景情况:
- 农作物形态的改进,如半矮体,对于农业至关重要,但由于复杂的基因表达,跨物种实现具有挑战性.
- 合成转录因子 (SynTFs) 为向基因表达变化提供了一个有希望的方法,但它们对可预测的形态工程的应用尚不清楚.
研究的目的:
- 探索数学建模的使用,以指导基于SynTF的基因表达调制,用于植物器官大小的可预测工程.
- 通过准吉伯雷林 (GA) 信号通路,阐明工程器官尺寸的设计原则.
主要方法:
- 数学建模被用来指导基于SynTF的基因表达调制在GA信号通路中.
- 实验是在*Arabidopsis thaliana*中进行的,并在西红 (*Solanum lycopersicum*) 中得到验证.
- 开发了表达参数化的模型,以定量预测器官大小和对温度的生长反应.
主要成果:
- 调节GA信号基因表达导致Arabidopsis thaliana*中组织和环境的一致的矮化,与模型预测的调节强度相关.
- 对不同监管架构对器官大小的定性影响的模型预测得到了验证.
- 定量模型准确地预测了器官大小和取决于温度的生长效应.
结论:
- 数学建模为使用SynTFs的植物器官大小的可预测工程提供了一个框架.
- 这种方法成功地将从*Arabidopsis thaliana*到西红 (*Solanum lycopersicum*) 的见解概括起来.
- 这项研究展示了通过模型引导的基因表达工程来实现植物表型的自下而上设计的概念验证.
相关概念视频
Cell Size
134.9K
Cell sizes vary widely among and within organisms. Bacterial cells range between 1-10 micrometers (μm)and are considerably smaller than most eukaryotic cells. The smallest bacteria are 0.1 μm in diameter—about a thousand times smaller than eukaryotic cells, which typically range from 10-100 μm.
Surface Area
Cells can take in nutrients and water via diffusion through the plasma membrane itself or through specific channels in the membrane. The area of the membrane surrounding...
Surface Area
Cells can take in nutrients and water via diffusion through the plasma membrane itself or through specific channels in the membrane. The area of the membrane surrounding...
134.9K
Plant Tissues
9.5K
Plants are multicellular eukaryotes with tissue systems made of various cell types that carry out specific functions. Different tissues work together to perform a unique function and form an organ. Organs working together form organ systems. Vascular plants have two distinct organ systems: a shoot system and a root system. The shoot system consists of two portions: the vegetative (non-reproductive) parts of the plant, such as the leaves and the stems, and the reproductive parts of the plant,...
9.5K
Design Example: Creating a Hydraulic Model of a Dam Spillway
832
Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.
832
Typical Model Studies
667
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
667
Light Acquisition
9.7K
In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
9.7K

