根区调节和纵向转移导致蔬菜中甲酸盐积累的品种间差异
Bogui Pan1, Xiaoqiong Zhu1, Li Huang1
1College of Life Science and Technology, Jinan University, Guangzhou, 510632, China.
Chemosphere
|May 18, 2024
概括
低积累的作物品种 (LACVs) 在受污染的土壤中有效地管理二二甲基甲酸盐 (DEHP). LACVs通过根基机制减少DEHP的吸收和转移,这对于更清洁的农业至关重要.
科学领域:
- 环境科学 环境科学
- 农业科学 农业科学
- 植物生理学 植物生理学
背景情况:
- 二甲基甲酸盐 (DEHP) 污染对农业生产和食品安全构成风险.
- 低累积作物品种 (LACVs) 对于污染土壤中的植物修复和安全食品生产至关重要.
- 了解DEHP在LACV中的根到芽的运输机制对于其应用至关重要.
研究的目的:
- 研究与高积累作物品种 (HACV) 相比,在LACV中研究DEHP的吸附-吸收-转移机制.
- 阐明根性质和纵向分配在DEHP积累中的作用.
- 量化管理DEHP在不同品种的积累的监管过程.
主要方法:
- 在根表面上对DEHP的ad/desorption进行比较分析.
- 在根顶部对DEHP纵向分配的研究.
- 评估DEHP吸收和转移路径沿着根-芽轴.
主要成果:
- 由于根性质,DEHP吸附在HACV中更高,而LACV中DEHP脱吸更大.
- 在LACV中,根尖显示在根盖和髓系中DEHP的积累较高,这与细胞增殖有关.
- 在LACV中,DEHP的纵向转移减少,在根细胞内分裂增加,并抑制了同位素吸收/xylem转移.
结论:
- LACVs表现出DEHP积累的多方面的调节,主要是通过根基机制.
- 受能量,结合部位和透气影响的减少交质吸收和质转移是LACV中DEHP抑制的关键.
- 这些发现突出了开发和利用DEHP污染环境中的LACVs的关键监管过程.
相关概念视频
Tonicity 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
C4 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
Adaptations 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
Key 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
Responses 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
Tonicity 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


