期刊
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
卷 267, 期 -, 页码 -出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ecoenv.2023.115656
关键词
Phospholipids; Extracellular enzyme activities; Lipidomics; Microplastic; Metolachlor
This study investigated the effects of the herbicide metolachlor and microplastics on the growth and adaptive responses of Trichoderma harzianum in soil. The findings showed that microplastics had a marginal inhibitory effect on the fungus, while metolachlor exhibited a dose-dependent inhibitory effect. However, the presence of microplastics did not influence the fungal degradation activity of the herbicide. Additionally, the activities of six extracellular enzymes in the soil were significantly enhanced in the presence of metolachlor.
Although it is known that microplastics (MPs) in soils cause a threat to this complex environment, the actual effects of MPs on soil microorganisms and their catabolic activities, particularly with the biodegradation of herbicides, remain unclear. Hence, the objective of this study was to investigate the effects of a simultaneous presence of metolachlor and low-density polyethylene (LDPE) microplastics on growth inhibition and adaptive responses of Trichoderma harzianum in soil microcosms. Using ergosterol content as an indicator of fungal biomass, it was observed that MPs alone had a marginal inhibitory effect on the growth of the fungus, whereas MET exhibited a dose-dependent inhibitory effect on T. harzianum. However, the presence of MPs did not in-fluence the fungal transforming activity toward the herbicide. Conversely, analysis of lipid profiles in the presence of MPs and herbicides revealed a reduction in the overall fluidity of phospholipid fatty acids, primarily attributed to an increase in lysophospholipids. The activities of six extracellular enzymes in the soil, measured using methylumbelliferone-linked substrates, were significantly enhanced in the presence of MET. These findings contribute to a broader understanding of the alterations in fungal activity in soil resulting from the influence of MPs and MET.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据