基板中的物理障碍导致玉米根生长轨迹从垂直转向斜
Jiaojiao Yao1,2,3, Jonathan Barés4, Lionel X Dupuy3,5
1PMMH, CNRS, ESPCI Paris, Université PSL, Sorbonne Université, Université Paris Cité, F-75005, Paris, France.
Journal of experimental botany
|September 13, 2024
概括
玉米根通过调整其生长轨迹来导航土壤的物理障碍. 根路径的选择受到障碍物大小和根路径的限制.
科学领域:
- 植物生物学 植物生物学
- 土壤科学 土壤科学
- 生物物理学的生物物理.
背景情况:
- 土壤的物理障碍,如压缩和石头,阻碍了根系的发展.
- 根利用阻力最小的路径,但潜在的机制仍然不清楚.
研究的目的:
- 为了研究玉米根如何对物理障碍作出反应.
- 了解根导航通过障碍物的机制.
主要方法:
- 利用3D打印的基板与受控的物理障碍.
- 采用高通量实时成像平台进行实时根观测.
- 应用图像分析算法来量化根生长轨迹.
主要成果:
- 根轨迹受到障碍物大小的影响,观察到稳定的垂直和斜路径.
- 中等尺寸的障碍物导致不稳定的轨迹随着时间的推移而变化.
- 轨迹变化的正式条件,将脱离角度与重力热曲率联系起来.
结论:
- 通过物理障碍的根导航受到障碍物大小和根的重力热反应的限制.
- 根的曲和感知重力的能力决定了它们利用最轻阻力路径.
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