一个多器官玉米代谢模型将温度压力与能源生产联系起来,并减少发电量
Niaz Bahar Chowdhury1, Margaret Simons-Senftle2, Berengere Decouard3
1Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, NE, USA.
iScience
|December 11, 2023
概括
气候变化对玉米产量产生影响. 这项研究开发了一种代谢模型,以了解压力反应,识别关键瓶,并提出设计耐温度玉米的策略,包括使用菌根真菌.
科学领域:
- 植物科学 植物科学
- 代谢工程是代谢工程.
- 气候变化生物学 气候变化生物学
背景情况:
- 气候变化对全球玉米生产率构成重大威胁.
- 了解玉米器官之间的代谢交叉对于开发有弹性的作物品种至关重要.
- 现有的模型缺乏分析应激反应的多器官视角.
研究的目的:
- 重建和语境化第一个多器官玉米代谢模型 (iZMA6517).
- 为了确定玉米中热和冷应激反应之间的代谢差异.
- 提出一个框架,用于设计耐温度的玉米观念型.
主要方法:
- 重建了iZMA6517多器官玉米代谢模型.
- 使用转录学数据和EXTREAM算法对模型进行上下文化.
- 代谢瓶和热力学驱动力分析.
主要成果:
- 热和冷应激都导致了减少电力瓶.
- 热应力独特地呈现了能源生产瓶.
- 一个减少热力学功率的发电轴被确定为温度应激反应的关键.
- 用Rhizophagus irregularis进行的实验性注射证明了在缓解温度压力的有效性.
结论:
- 这项研究为玉米提供了一个新的多器官代谢模型.
- 在温度压力下阐明了关键的代谢途径和瓶.
- 利用已识别的轴和微生物干预措施可以指导对气候适应性玉米的工程.
更多相关视频
相关概念视频
Responses to Heat and Cold Stress
13.5K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
13.5K
Adaptations that Reduce Water Loss
25.6K
Though evaporation from plant leaves drives transpiration, it also results in loss of water. Because water is critical for photosynthetic reactions and other cellular processes, evolutionary pressures on plants in different environments have driven the acquisition of adaptations that reduce water loss.
25.6K
C4 Pathway and CAM
45.5K
Most plants use the C3 pathway for carbon fixation. However, some plants, such as sugar cane, corn, and cacti that grow in hot conditions, use alternative pathways to fix carbon and conserve energy loss due to photorespiration. Photorespiration is the process that occurs when the oxygen concentration is high. Under such conditions, the rubisco enzyme in the Calvin cycle binds O2 instead of CO2, which halts photosynthesis and consumes energy.
C4 Pathway
The C4 pathway is used by plants such as...
C4 Pathway
The C4 pathway is used by plants such as...
45.5K
Light Acquisition
8.5K
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.
8.5K
Overview of Metabolism
30.3K
Living cells constantly carry out various chemical reactions which are necessary for their proper functioning. These reactions are interlinked to one another via multiple pathways. The collection of these chemical reactions is known as metabolism.
Plant Metabolism
Sunlight, the primary source of energy in plants, is first absorbed by the chlorophyll pigments present in their leaves. Plants then use this energy to carry out photosynthesis, where water is oxidized into oxygen and carbon dioxide...
Plant Metabolism
Sunlight, the primary source of energy in plants, is first absorbed by the chlorophyll pigments present in their leaves. Plants then use this energy to carry out photosynthesis, where water is oxidized into oxygen and carbon dioxide...
30.3K


