CuO@SiO2 种子原料增强了玉米的耐旱性和获效率
Yixia Zhu1, Zihan Guo1, Shourong Zheng1
1State Key Laboratory of Water Pollution Control and Green Resource Recycling, School of Environment, Nanjing University, Nanjing 210023, China.
Environmental science & technology
|October 27, 2025
概括
工程化铜氧化物/纳米颗粒 (CuO@SiO2NP) 提高了玉米的干旱耐受性和吸收. 这种种子初始化策略提高了谷物产量,提高了对水和营养压力的弹性,以实现可持续农业.
科学领域:
- 农业科学 农业科学
- 纳米技术纳米技术
- 植物生理学 植物生理学
背景情况:
- 可持续农业要求在减少资源投入的情况下提高作物产量.
- 玉米 (Zea mays) 是一个重要的主食作物,易受气候变化的影响,特别是干旱和营养压力.
- 种子初始化是一种播种前的处理,以提高种子性能和作物建立.
研究的目的:
- 为了研究顿式CuO@SiO2纳米颗粒 (NP) 作为玉米种子原料的有效性.
- 评估CuO@SiO2 NPs种子原料对干旱耐受性和获的影响.
- 阐明CuO@SiO2 NPs种子原始化的潜在生理和分子机制.
主要方法:
- 合成和表征了CuO@SiO2 NP.
- 玉米种子用CuO@SiO2NP (20 mg/L,24小时) 或水质制 (对照) 进行了原始化.
- 实地测试是在正常和干旱条件下进行的.
- 进行了生理参数 (根系结构,产量) 和分子分析 (RNA-seq,代谢物概况).
主要成果:
- CuO@SiO2 NPs种子原料化显著提高了谷物产量,与水性原料化相比,谷物产量增加了9.3% (正常) 和16.6% (干旱).
- 在压力下,原料增强根系架构 (RSA) 的可塑性,包括根毛密度和初级根深度.
- 转录组和代谢组分析显示,上调调的基因和代谢物参与营养吸收,RSA调节和应激耐受.
结论:
- CuO@SiO2 NPs种子原料是一种具有成本效益的策略,可以提高玉米对干旱和缺乏的抵抗力.
- 增强的压力耐受性是由ROS诱导的RSA可塑性和改善的营养同化作用.
- 面对气候变化,这种方法为可持续的粮食安全提供了一个有希望的途径.
相关概念视频
Responses 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
Responses 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
Key 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
Seed Structure and Early Development of the Sporophyte
30.8K
Seed structures are composed of a protective seed coat surrounding a plant embryo, and a food store for the developing embryo. The embryo contains the precursor tissues for leaves, stem, and roots. The endosperm and cotyledons—seed leaves—act as the food reserves for the growing embryo.
30.8K
Adaptations 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
C4 Pathway and CAM
48.6K
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...
48.6K


