Related Experiment Video
Updated: Feb 8, 2026
04:35
Author Spotlight: Simulation and Analysis of the Temperature Rise of Ring Main Unit Equipment
Published on: July 5, 2024
2.4K
Crop quality under rising atmospheric CO2.
Johan Uddling1, Malin C Broberg1, Zhaozhong Feng2
1University of Gothenburg, Department of Biological and Environmental Sciences, P.O. Box 461, 40530 Gothenburg, Sweden.
Current Opinion in Plant Biology
|July 1, 2018
Summary
Elevated CO2 (eCO2) boosts crop yields but reduces nutritional quality, a complex issue beyond simple growth dilution. This review explores the mechanisms behind reduced crop nutrient content under eCO2.
Area of Science:
- Agricultural Science
- Plant Physiology
- Nutritional Science
Background:
- Elevated CO2 (eCO2) often increases crop yields.
- However, eCO2 also leads to decreased nutritional quality in crops.
- Growth dilution is a proposed mechanism, but not the sole explanation for nutrient reduction.
Purpose of the Study:
- To review current knowledge on eCO2 effects on crop nutritional quality.
- To explore the mechanisms and processes causing these effects.
- To focus on nitrogen and protein concentrations while considering other nutrients.
Main Methods:
- Literature review of existing studies on eCO2 and crop quality.
- Analysis of proposed physiological and biochemical mechanisms.
- Comparison of eCO2 effects across different nutrients.
Main Results:
- eCO2-induced reduction in crop nutrient concentrations is a widespread phenomenon.
- Mechanisms beyond growth dilution contribute to decreased nutrient content.
- Nitrogen and protein concentrations are significantly affected, with varying impacts on other nutrients.
Conclusions:
- Understanding eCO2's impact on crop nutrition is crucial for food security.
- Further research is needed to fully elucidate the complex mechanisms involved.
- Mitigation strategies may be required to maintain crop nutritional value under future atmospheric conditions.
Related Concept Videos
02:57Definition and Measurement of Pressure: Atmospheric Pressure, Barometer, and Manometer
43.5K
Gas pressure is caused by force exerted by gas molecules colliding with the surfaces of objects. Although the force of each collision is very small, any surface of an appreciable area experiences a large number of collisions in a short time, which can result in high pressure.
43.5K
01:18Rise of Liquid in a Capillary Tube
3.2K
When very thin cylindrical tubes, called capillaries, are dipped in a liquid, the liquid rises or falls in the tube compared to the surrounding liquid. This phenomenon is called capillary action. Capillary action occurs due to the combination of two opposing forces: the cohesive forces of the liquid, which cause it to stick to itself and form a rounded shape, and the adhesive forces between the liquid and the walls of the container, which cause the liquid to be attracted to the container walls.
3.2K
01:18Variation of Atmospheric Pressure
4.2K
Change in atmospheric pressure with height is particularly interesting. The decrease in atmospheric pressure with increasing altitude is due to the decreasing gravitational force per unit area as we move away from the surface of the earth.
Assuming the air temperature is constant at a given altitude and that the ideal gas law of thermodynamics describes the atmosphere to a good approximation, one can find the variation of atmospheric pressure with height.
Let p(y) be the atmospheric pressure at...
Assuming the air temperature is constant at a given altitude and that the ideal gas law of thermodynamics describes the atmosphere to a good approximation, one can find the variation of atmospheric pressure with height.
Let p(y) be the atmospheric pressure at...
4.2K
01:05Quality Control
2.7K
Quality control is one of the three cyclical quality assurance activities that help keep a system under statistical control. Typical quality control activities include creating quality control charts, conducting proficiency testing, and documenting and archiving results.
Quality control helps track data, visualize trends, and identify variations, making it easier to detect deviations that may affect the accuracy of an analysis. One way to do this is by generating a quality control chart, which...
Quality control helps track data, visualize trends, and identify variations, making it easier to detect deviations that may affect the accuracy of an analysis. One way to do this is by generating a quality control chart, which...
2.7K
01:19Quality Assurance
2.4K
Quality assurance is the overarching term used to describe the activities employed to ensure the proper performance of a system. These activities can be classified into three categories: quality control, quality assessment, and internal corrective measures. Typically, these activities work cyclically: quality control is performed before and during the analysis, while quality assessment occurs during and after the investigation. Internal corrective measures are implemented based on the findings...
2.4K
01:19Quality of Water
573
In concrete preparation, the quality of water is paramount as it affects the strength and durability of the concrete. Potable water is usually preferred; however, it must not have excessive sodium or potassium to prevent compromising the concrete's integrity. Water quality is typically evaluated based on impurities such as dissolved solids, chlorides, and sulfates, and its pH value is ideally between 6 and 8. Even slightly acidic natural water may be acceptable unless it contains harmful...
573