相关实验视频
Updated: Jun 30, 2025
09:23
Lateral Root Inducible System in Arabidopsis and Maize
Published on: January 14, 2016
13.8K
植物中的Pb吸收,积累和转移:植物生理,生化和分子反应:一篇综述
Shafeeq Ur Rahman1, Anzhen Qin2, Muhammad Zain3
1Water Science and Environmental Engineering Research Center, College of Chemical and Environmental Engineering, Shenzhen University, Shenzhen, 518060, China.
Heliyon
|March 19, 2024
概括
(Pb) 污染严重影响植物,影响生长和产量. 本综述详细介绍了的吸收,毒性机制和植物防御策略,包括环境友好的植物补救和土壤补救的生物炭修正案.
科学领域:
- 环境科学 环境科学
- 植物生物学 植物生物学
- 毒理学 毒理学 毒理学
背景情况:
- (Pb) 是一种普遍存在且高度有毒的环境污染物.
- 污染对土壤植物系统构成重大风险,影响农业生产力和生态系统健康.
研究的目的:
- 审查植物中 (Pb) 离子的吸收,积累和转移情况.
- 阐明Pb对植物形态生理和生化属性的毒理影响.
- 巩固目前关于植物对Pb诱导的氧化应激反应的知识,并探索缓解策略.
主要方法:
- 关于植物中毒性的现有研究的文献综述.
- 对影响Pb吸收和转移的因素的分析.
- 检查植物对Pb压力的生理,生化和分子反应.
主要成果:
- 的吸收受土壤特性 (CEC,pH,颗粒大小) 和植物根特征的影响.
- 的毒性抑制了种子发芽,根/芽生长,营养吸收,光合作用和水平衡,同时诱导了氧化应激.
- 植物激活酶和非酶抗氧化剂,并使用涉及基因表达,蛋白质和谷氨代谢的解毒机制来对抗Pb植物毒性.
结论:
- 污染严重损害了植物的生长和发育,通过各种生理和生化乱.
- 植物表现出复杂的防御机制,包括抗氧化系统和排毒通路,以减轻Pb诱导的压力.
- 植物修复和生物炭修正案为管理受Pb污染的土壤提供了有希望的,具有成本效益的和环保的解决方案.
相关概念视频
01:25Cell Signaling in Plants
5.6K
Plant cells communicate to coordinate their cycle of growth, flowering and fruiting, and activities in roots, shoots, and leaves in response to the changing environmental conditions. Plant signaling is distinct from animal signaling. Plants primarily utilize enzyme-linked receptors, whereas the largest class of cell-surface receptors in animals are G-protein coupled receptors (GPCRs). Unlike animals, receptor tyrosine kinases are rare in plants. Instead, plants have a diverse class of...
5.6K
02:35Key Elements for Plant Nutrition
18.7K
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...
18.7K
02:50Transgenic Plants
7.2K
Recombinant DNA technology called transgenesis is often used to add a foreign gene or remove a detrimental gene from an organism. Such genetically modified organisms are called transgenic organisms.
The first-ever transgenic plant was a tobacco plant developed in 1983 that showed resistance against the tobacco mosaic virus. Since then, many transgenic plants have been developed and commercialized for improving the agricultural, ornamental, and horticultural value of a crop plant. Transgenic...
The first-ever transgenic plant was a tobacco plant developed in 1983 that showed resistance against the tobacco mosaic virus. Since then, many transgenic plants have been developed and commercialized for improving the agricultural, ornamental, and horticultural value of a crop plant. Transgenic...
7.2K
02:12Short-distance Transport of Resources
16.0K
Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
16.0K
01:59The Phragmoplast
5.1K
Cell division is essential for organismal growth and development. In animal cells, the central spindle and its associated proteins form the midbody, a structure that has an essential role in cytokinesis. In plants, the central spindle, along with the microtubules, actin, and other cell components, matures into the phragmoplast, which is necessary for cytokinesis. Unlike the stationary midbody, the phragmoplast expands centrifugally, eventually leading to the formation of the new cell wall.
The...
The...
5.1K
02:26Defenses Against Pathogens and Herbivores
23.7K
Plants present a rich source of nutrients for many organisms, making it a target for herbivores and infectious agents. Plants, though lacking a proper immune system, have developed an array of constitutive and inducible defenses to fend off these attacks.
23.7K