聚乙烯微塑料改变根功能,影响草植物生理学和水果质量特征
C Ceccanti1, A Davini1, E Lo Piccolo2
1Department of Agriculture, Food and Environment, University of Pisa, via del Borghetto, 80, 56124 Pisa, Italy.
Journal of hazardous materials
|April 7, 2024
概括
聚乙烯微塑料 (PE-MPs) 对草植物产生负面影响,降低水果的重量和质量. 较小的PE-MP吸附在根部造成的损害最大,影响植物水的状态和生理.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 植物生理学 植物生理学
背景情况:
- 草是全球受欢迎的水果,因口味和健康益处而受到重视.
- 农业土壤中的微塑料污染是一个日益严重的环境问题.
- 了解微塑料对作物生理学和水果质量的影响至关重要.
研究的目的:
- 评估聚乙烯微塑料 (PE-MPs) 对草植物生理学和水果质量的影响.
- 研究PE-MP大小和度对植物应激反应的影响.
- 评估对根结构,二氧化碳同化和水果特性的影响.
主要方法:
- 草植物是在用不同尺寸 (35微米和125微米) 和度 (0.02%和0.2%w/w) 的PE-MPs修改的土壤中种植的.
- 测量了植物生理参数,包括二氧化碳同化和根中的氧化应激标志物.
- 进行了根部组织化学和解剖学分析.
- 分析了水果的生物识别数据和质量属性 (重量,可溶性固体,酸盐).
主要成果:
- 最严重的生理影响,包括减少二氧化碳同化和增加根氧化应激,观察到35微米PE-MP的0.2%度.
- 虽然植物生物质不受影响,但水果质量受到显著损害.
- 在35μm/0.2%的PE-MP处理中,水果重量减少了42%,可溶性固体减少了10%,而安东含量减少了25%.
- 最小的PE-MP粘附在根部,损坏了根部,损害了植物的水状态.
结论:
- 聚乙烯微塑料,特别是较小的尺寸,可以显著损害草植物生理学和水果质量.
- 根损伤和水的状态变化是PE-MPs影响植物健康的关键机制.
- 需要进一步的研究来探索不同类型的微塑料的影响及其对水果物理化学的长期影响.
更多相关视频
相关概念视频
Responses to Drought and Flooding
10.2K
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.
10.2K
Microbe-Plant Interactions
119
Microbe-plant interactions represent a dynamic spectrum of associations shaped by intricate chemical signaling. These interactions can be neutral, beneficial, or detrimental, and profoundly influence plant physiology, growth, and ecosystem function. The plant microbiome, comprising bacteria, fungi, archaea, protists, and viruses, plays a pivotal role in mediating these effects through surface colonization, internal colonization, or systemic symbiosis.Mutualistic associations, particularly with...
119
Microbial Bioremediation of Pesticides
80
Pesticides often feature structurally complex chemical architectures, incorporating halogen groups and multiple aromatic rings. These characteristics confer high chemical stability, rendering many pesticides resistant to natural degradation processes. This resistance poses significant environmental concerns, as persistent pesticide residues can accumulate in ecosystems and affect non-target organisms.Despite the inherent stability of many pesticides, certain microorganisms possess the metabolic...
80
Bioplastics
69
Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
69
Microbial Bioremediation of Plastics
126
Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...
126


