纳米工程生物炭通过整合性生理机制有效地减轻大米 (Oryza sativa L.) 的盐度压力
Haider Sultan1, Asad Shah2, Hafiz Muhammad Mazhar Abbas2
1Sanya National Center of Technology Innovation for Saline-Alkali Tolerant Rice, School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya, 572025, China; Hubei Engineering Research Center for Protection and Utilization of Special Biological Resources in the Hanjiang River Basin, College of Life Sciences, Jianghan University, Wuhan, 430056, Hubei, China.
Plant physiology and biochemistry : PPB
|November 15, 2025
概括
将生物炭与氧化 (ZnO) 纳米颗粒相结合,显著提高了大米植物对土壤化的抵抗力. 这种可持续的方法提高了盐敏感和耐盐米品种的关键生长和生理标记.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 植物科学 植物科学
背景情况:
- 土壤盐化是一个日益严重的农业挑战,威胁到农作物产量和粮食安全.
- 需要创新的解决方案来改善植物对盐水条件的耐受性.
- 生物炭和纳米粒子提供了一个有希望的协同方法来缓解盐度压力.
研究的目的:
- 评估草生物炭与氧化 (ZnO) 和铁 (III) 氧化物 (Fe2O3) 纳米颗粒结合在提高大米盐分耐受性的有效性.
- 研究两种对比的水基因型中改善的盐分耐受性背后的生理和生化机制.
- 确定生物炭和纳米粒子的最佳应用率,以减轻盐度压力.
主要方法:
- 一个半场实验使用米的生物炭 (20 t ha−1) 与 ZnO 和 Fe2O3 纳米粒子 (10 和 20 mg L−1) 结合进行.
- 两种大米基因型,JL534 (对盐敏感) 和XL900 (对盐耐受),经受盐水条件 (EC ≈ 10.5 dS m-1).
- 分析了生理参数 (生物质,叶绿素,水含量,K+含量) 和生化标志物 (ROS,抗氧化酶).
主要成果:
- 生物炭与20毫克L-1 ZnO (ZnBC@2) 的组合显著改善了两种基因型的芽生物质,叶绿素度,SPAD指数,相对含水量和K+含量.
- ZnBC@2的应用提高了植物耐受性指数,并通过降低H2O2和MDA水平来减少氧化损伤,同时提高了抗氧化酶活性.
- 高度的Fe2O3纳米颗粒与生物炭显示较小的积极效果,可能是由于hormesis.
结论:
- 生物炭和ZnO纳米颗粒的联合应用是提高米盐耐受性的高效策略.
- 这种综合方法为管理农业中的土壤盐化提供了可持续的解决方案.
- 了解生物炭和纳米颗粒的协同效应可以指导未来的战略,以提高农作物在具有挑战性的环境中的弹性.
相关概念视频
02:02Responses to Salt Stress
14.4K
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.
14.4K
02:41Responses to Drought and Flooding
11.9K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
11.9K
01:59Plant Breeding and Biotechnology
21.4K
Crop cultivation has a long history in human civilization, with records showing the cultivation of cereal plants beginning at around 8000 BC. This early plant breeding was developed primarily to provide a steady supply of food.
21.4K
01:57Adaptations that Reduce Water Loss
27.9K
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.
27.9K
00:46Bioremediation
22.0K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
22.0K
02:35Key Elements for Plant Nutrition
23.9K
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...
23.9K