Related Experiment Video
Updated: Apr 30, 2026
12:03
Two-Dimensional Visualization and Quantification of Labile, Inorganic Plant Nutrients and Contaminants in Soil
Published on: September 1, 2020
6.1K
Root-zone regulation and longitudinal translocation cause intervarietal differences for phthalates accumulation in
Bogui Pan1, Xiaoqiong Zhu1, Li Huang1
1College of Life Science and Technology, Jinan University, Guangzhou, 510632, China.
Chemosphere
|May 18, 2024
Summary
Low-accumulating crop varieties (LACVs) effectively manage di-(2-ethylhexyl) phthalate (DEHP) in contaminated soils. LACVs reduce DEHP uptake and translocation via root-based mechanisms, crucial for cleaner agriculture.
Area of Science:
- Environmental Science
- Agricultural Science
- Plant Physiology
Background:
- Di-(2-ethylhexyl) phthalate (DEHP) contamination poses risks to agricultural production and food safety.
- Low-accumulating crop varieties (LACVs) are crucial for phytoremediation and safe food production in contaminated soils.
- Understanding DEHP's root-to-shoot transport mechanisms in LACVs is vital for their application.
Purpose of the Study:
- To investigate the adsorption-absorption-translocation mechanisms of DEHP in LACVs compared to high-accumulating crop varieties (HACVs).
- To elucidate the role of root properties and longitudinal allocation in DEHP accumulation.
- To quantify the regulatory processes governing DEHP accumulation in different choysum varieties.
Main Methods:
- Comparative analysis of DEHP ad/desorption on root surfaces.
- Investigation of DEHP longitudinal allocation in root apexes.
- Assessment of DEHP uptake and translocation pathways along the root-shoot axis.
Main Results:
- DEHP adsorption was higher in HACVs due to root properties, while DEHP desorption was greater in LACVs.
- Root tips in LACVs showed higher DEHP accumulation in the root cap and meristem, linked to cell proliferation.
- Longitudinal translocation of DEHP was reduced in LACVs, with increased partitioning in the root apoplast and suppressed symplastic uptake/xylem translocation.
Conclusions:
- LACVs exhibit multifaceted regulation of DEHP accumulation, primarily through root-based mechanisms.
- Reduced symplastic uptake and xylem translocation, influenced by energy, binding sites, and transpiration, are key to DEHP suppression in LACVs.
- These findings highlight the pivotal regulatory processes for developing and utilizing LACVs in DEHP-contaminated environments.
Keywords:
Adsorption-absorption-translocationFood safetyPhthalate esters (PAEs)Variety differenceVegetableMore Related Videos
Related Concept Videos
00:53Tonicity in Plants
54.0K
Tonicity describes the capacity of a cell to lose or gain water. It depends on the quantity of solute that does not penetrate the membrane. Tonicity delimits the magnitude and direction of osmosis and results in three possible scenarios that alter the volume of a cell: hypertonicity, hypotonicity, and isotonicity. Due to differences in structure and physiology, tonicity of plant cells is different from that of animal cells in some scenarios.
54.0K
01:27C4 Pathway and CAM
38.0K
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...
38.0K
01:57Adaptations that Reduce Water Loss
24.2K
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.
24.2K
02:35Key Elements for Plant Nutrition
17.9K
Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...
17.9K
02:02Responses to Salt Stress
12.2K
Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.
12.2K
01:20Tonicity in Plants
25.5K
Plant cells maintain appropriate osmotic balance in extreme conditions. For instance, plants in dry environments store water in vacuoles, limit the opening of their stoma, and have thick, waxy cuticles to prevent unnecessary water loss. Some species of plants that live in salty environments store salt in their roots. As a result, water osmosis occurs in the root from the surrounding soil.
Tonicity
Tonicity describes the capacity of a cell to lose or gain water depending on the solute...
Tonicity
Tonicity describes the capacity of a cell to lose or gain water depending on the solute...
25.5K