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评估Alnus glutinosa中HCH异构体的吸收:对植物修复和微生物反应的影响

Aday Amirbekov^1,2, Stanislava Vrchovecka^1,2, Jakub Riha¹

¹Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, 460 01, Liberec, Czech Republic.

Scientific reports

|February 20, 2024

概括

黑树苗生物积累六环素 (HCH) 异构体,主要是在根. 这种农药污染改变了植物荷尔蒙,并影响了土壤微生物,如Pseudomonas和Tomentella.

科学领域:

环境科学环境科学
植物生物学植物生物学
微生物学微生物学

背景情况:

六环素 (HCH) 异构体虽然被禁止,但在全球范围内仍然存在.
了解它们的环境命运和植物吸收是至关重要的.

研究的目的:

为了研究黑 (Alnus glutinosa) 中α,β和δ HCH异构体的生物积累.
评估HCH异构体对植物生理学和土壤微生物群落的影响.

主要方法:

黑树苗在土壤中暴露于单个HCH异构体 (50毫克/公斤) 三个月.
使用气色谱-质谱法量化HCH异构体度.
分析了植物激素水平和根球微生物群落 (16S rRNA测序).

主要成果:

在根部中发现了最高的HCH同位素度,在根部下降.
德尔塔-HCH显示了最高的生物积累.
在被β-HCH污染的土壤中检测到α-HCH.
暴露于HCH改变了植物激素水平,并减少了Pseudomonas spp. 这是一个丰富的,丰富的.
托门特拉种群的变化很大,在对照种群中占主导地位,但随着delta-HCH.的出现下降.

结论:

阿尔努斯·格卢蒂诺萨 (Alnus glutinosa) 具有显著的HCH异构体生物积累,特别是在根组织中.
HCH污染破坏了植物激素平衡,改变了土壤微生物结构.
这些发现强调了陆地生态系统中持久的HCH异构体的潜在生态风险.

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