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学科主题: 氟化学 ; 生命有机化学
题名: Plant availability and phytotoxicity of soil bound residues of herbicide ZJ0273, a novel acetolactate synthase potential inhibitor
其他题名: 新型ALS潜在抑制剂丙酯草醚结合残留的生物有效性和植物毒性
作者: Han AL(韩爱良) ; Yue L(岳玲) ; Li Z(李政) ; Wang HY(汪海燕) ; Ye QF(叶庆富) ; Lv L(吕龙) ; Gan JY(甘剑英)
通讯作者: 叶庆富 ; 吕龙
刊名: Chemosphere
发表日期: 2009
卷: 77, 期:7, 页:955-961
收录类别: SCI
部门归属: 浙江大学; 上海有机所
英文摘要: The plant availability and phytotoxicity of soil bound residues (BR) of herbicide ZJ0273, a novel acetolactate synthase (ALS) potential inhibitor, to rice (Oryza sativa L.) and corn (Zea mays L) was investigated in three different soils including a Fluvio-marine yellow loamy soil (S-1), a Red clayey soil (S-2), and a Coastal saline Soil (S-3), using C-14-labeling tracer and bioassay techniques. When soils were amended with BR at 0.6. 1.2 and 1.8 nmol g(-1), dose-dependent and significant inhibition was observed for rice seedlings within 14 d after treatment, but no significant inhibition occurred to corn seedlings in the same treatment. Radioactive analysis of soil extracts following sequential extractions showed that the C-14 labeled residues of ZJ0273 were released from the amended soil BR upon planting. For example, when amended with 1.8 nmol g(-1), about 68.3%, 57.0%, and 61.1%, respectively, of the added BR were released in S-1, S-2, and S-3 planted with rice seedlings, whereas 38.9%, 32.7% and 32.6% became available for uptake in the corresponding soils planted with corn seedlings. The released compounds were identified as ZJ0273 and its degradation products M1 and M2, with M2 as the primary component. Bioassay on rice showed that concentration for 50% inhibition (IC50) of ZJ0273, M1, and M2 were 33.16, 1.93 and 0.49 mu M, respectively. Therefore, BR formed after application of ZJ0273 may become available for plant uptake during rice cultivation and lead to phytotoxic effects, and the phytotoxicity is mainly caused by the release of the biologically active metabolite M2. This knowledge is valuable for designing crop rotation practices so that crop injury and yield losses due to carry-over herbicide phytotoxicity may be avoided. (C) 2009 Elsevier Ltd. All rights reserved.
语种: 英语
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WOS记录号: WOS:000271992200012
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内容类型: 期刊论文
URI标识: http://ir.sioc.ac.cn/handle/331003/19209
Appears in Collections:中科院有机氟化学重点实验室_期刊论文

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Recommended Citation:
Han AL,Yue L,Li Z,et al. Plant availability and phytotoxicity of soil bound residues of herbicide ZJ0273, a novel acetolactate synthase potential inhibitor[J]. Chemosphere,2009,77(7):955-961.
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