可生物降解和常规料抑制花生根结节的固 - 可能与土壤中的微塑料有关
Wei Guo1, Jizhi Li1, Zhengfeng Wu2
1Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Journal of hazardous materials
|November 13, 2024
概括
覆盖,包括塑料薄膜,减少植物根结核中的固定. 来自土的微塑料可能会对植物生长的这一关键过程产生负面影响.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 微生物学 微生物学
背景情况:
- 覆盖改善了土壤条件和植物生长.
- 杂草衍生的微塑料对根结节固定的影响尚不清楚.
研究的目的:
- 为了研究聚乙烯 (PE) 和聚乳酸-聚乙烯基酸盐-联合甲酸盐 (PLA-PBAT) 薄膜覆盖对固化的影响.
- 评估土壤中固和微塑料 (MP) 之间的关系.
主要方法:
- 采用15N标记技术,在连续4年覆后量化固化.
- 分析了二基酶活性,黄酸盐含量,布拉迪里佐丰富度和nifH基因表达.
- 采用了代谢分析和统计建模 (曼特尔测试,PLS-PM).
主要成果:
- 覆盖降低了结固的比例 (54.3%-58.7%).
- 护降低了二酸酶活性和黄含量;PLA-PBAT薄膜降低了Bradyrhizobium的丰富性.
- 来自覆盖的微塑料显示了与根结节固定的潜在负相关性.
结论:
- 护对根结节的固有负面影响,可能是由于微塑料污染.
- N-lauroylethanolamine可能是固化的调节信号,由覆改变.
- 杂草中产生的微塑料对固和植物吸收构成威胁.
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