EAGER: Determining Interaction Parameters of Roots in Soil

EAGER：确定土壤中根部的相互作用参数

• 批准号: 1411750
• 负责人: Philip Benfey
• 金额: $ 30万
• 依托单位: Duke University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-04-15 至 2017-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1411750&HistoricalAwards=false
• 关键词: EAGER; Determining; Interaction; Parameters; Roots

PI: Philip Benfey (Duke University)CoPI: Daniel Goldman (Georgia Institute of Technology) The goal of this EAGER project is to begin to address the question "How do plant roots behave in soil?" Due to the opaque nature of soil, most previous studies have involved digging up roots, observing them in transparent materials, or observing them as they grow against a transparent interface. This project is an early stage effort that has the potential to transform the way root/soil interaction studies are performed. Expertise in the physics of granular matter will be combined with expertise in root biology to explore this area. The experimental plan involves growing rice in cylindrical containers and systematically varying soil parameters. Root response will be imaged with X-ray computed tomography with 3-D root structure reconstructed and analyzed using software previously developed by the PIs. The project is interdisciplinary (physics and biology) and applies new expertise (physics of granular matter) and new technology (high-resolution X-ray detection). The work also has important practical applications: poor soil fertility and environmental stress suppress crop yields in many parts of the world, and many models predict abiotic stress will increase in coming decades. Thus, enhanced knowledge of root responses to soil composition and soil moisture could be highly beneficial to agriculture, particularly in developing countries. X-ray CT scans of roots and software necessary for analysis will be made available on repository websites at the Georgia Institute of Technology.

主要研究者：菲利普·本尼迪克特（杜克大学）CoPI：丹尼尔·戈德曼（格鲁吉亚理工学院）EAGER项目的目标是开始解决“植物根在土壤中的行为如何？“由于土壤的不透明性，大多数以前的研究都涉及挖掘根系，在透明材料中观察它们，或者在透明界面上观察它们的生长。该项目是一个早期阶段的努力，有可能改变根/土壤相互作用的研究进行的方式。颗粒物质物理学方面的专业知识将与根系生物学方面的专业知识相结合，以探索这一领域。实验计划包括在圆柱形容器中种植水稻，并系统地改变土壤参数。根反应将使用X射线计算机断层扫描成像，使用PI先前开发的软件重建和分析三维根结构。该项目是跨学科的（物理学和生物学），并应用新的专业知识（颗粒物质物理学）和新技术（高分辨率X射线探测）。这项工作也有重要的实际应用：在世界许多地方，土壤肥力差和环境压力抑制了作物产量，许多模型预测非生物压力将在未来几十年增加。因此，加强了解根系对土壤成分和土壤湿度的反应，可能对农业非常有益，特别是在发展中国家。树根的X射线CT扫描和分析所需的软件将在格鲁吉亚理工学院的储存库网站上提供。

项目成果

Air-Fluidized Aggregates of Black Soldier fly Larvae

黑水虻幼虫的空气流化聚集体

• DOI: 10.3389/fphy.2021.734447
• 发表时间: 2021
• 期刊: Frontiers in Physics
• 影响因子: 3.1
• 作者: Ko, Hungtang;Cassidy, Grace J.;Shishkov, Olga;Aydin, Enes;Hu, David L.;Goldman, Daniel I.
• 通讯作者: Goldman, Daniel I.