期刊
BIOLOGY AND FERTILITY OF SOILS
卷 57, 期 5, 页码 643-655出版社
SPRINGER
DOI: 10.1007/s00374-021-01556-2
关键词
Biodegradation; Bioherbicides; Hydroxycoumarins; Phytotoxicity; Plant allelochemicals; Sorption
类别
资金
- Spanish Ministry of Science, Innovation, and Universities (MCIU/AEI)
- FEDER-FSE funds [AGL2017-82141-R]
- MCIU/AEI [PRE2018-083293, AGL201782141-R]
The sorption and degradation of scopoletin in soil are influenced by soil properties, with microbial-mediated dissipation occurring more slowly in acidic soils, affecting the expression of its phytotoxicity.
The sorption of the allelochemical scopoletin (7-hydroxy-6-methoxycoumarin) was studied in eight agricultural soils and different model sorbents. We also determined its degradation in selected soils and related sorption and degradation results to the expression of scopoletin phytotoxicity in soil towards two model plant species, Eruca vesicaria and Hordeum vulgaris. Scopoletin was sorbed to a greater extent in acid soils than in alkaline soils. Correlations with soil properties indicated that the soil pH and fine (silt/clay) fraction played a primary role in the sorption of scopoletin by soils. Weak interactions controlled its sorption in acid soils, whereas stronger interactions, probably with mineral clay constituents, became more relevant in alkaline clay soils. Dissipation of scopoletin in the soils was microbial-mediated and occurred more slowly in acid than alkaline soils. As a result, the phytotoxic activity of scopoletin was expressed in acid but not in alkaline soil. The results point to the influence that soil properties are expected to exert on the expression of the phytotoxicity of scopoletin in natural and agricultural ecosystems.
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