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A laboratory study on risk assessment of microcystin-RR in cropland
Liu Bibo1,2; Gong Yan1,2; Xiao Bangding1,2; Liu Jiantong1; Liu Yongding1; Liu, JT, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China
2008-02-01
Source PublicationJOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN0301-4797
Volume86Issue:3Pages:566-574
AbstractThe persistence time and risk of microcystin-RR (MC-RR) in cropland via irrigation were investigated under laboratory conditions. In order to evaluate the efficiency of the potential adsorption and biodegradation of MC-RR in cropland and the persistence time of MC-RR for crop irrigation, high performance liquid chromatography (HPLC) was used to quantify the amount of MC-RR in solutions. Our study indicated that MC-RR could be adsorbed and biodegraded in cropland soils. MC-RR at 6.5 mg/L could be completely degraded within 6 days with a lag phase of 1 - 2 days. In the presence of humic acid, the same amount of MC-RR could be degraded within 4 days without a lag phase. Accordingly, the persistence time of MC-RR in cropland soils should be about 6 days. This result also suggested the beneficial effects of the organic fertilizer utilization for the biodegradation of MC-RR in cropland soils. Our studies also demonstrated that MC-RR at low concentration (< 10 mu g/L) could accelerate the growth of plants, while high concentration of MC-RR (> 100 mu g/L) significantly inhibited the growth of plants. High sensitivity of the sprouting stage plants to MC-RR treatments as well as the strong inhibitory effects resulting from prolonged irrigation further indicated that this MC-RR growth-inhibition may vary with the duration of irrigation and life stage of the plants. (c) 2007 Published by Elsevier Ltd.; The persistence time and risk of microcystin-RR (MC-RR) in cropland via irrigation were investigated under laboratory conditions. In order to evaluate the efficiency of the potential adsorption and biodegradation of MC-RR in cropland and the persistence time of MC-RR for crop irrigation, high performance liquid chromatography (HPLC) was used to quantify the amount of MC-RR in solutions. Our study indicated that MC-RR could be adsorbed and biodegraded in cropland soils. MC-RR at 6.5 mg/L could be completely degraded within 6 days with a lag phase of 1 - 2 days. In the presence of humic acid, the same amount of MC-RR could be degraded within 4 days without a lag phase. Accordingly, the persistence time of MC-RR in cropland soils should be about 6 days. This result also suggested the beneficial effects of the organic fertilizer utilization for the biodegradation of MC-RR in cropland soils. Our studies also demonstrated that MC-RR at low concentration (< 10 mu g/L) could accelerate the growth of plants, while high concentration of MC-RR (> 100 mu g/L) significantly inhibited the growth of plants. High sensitivity of the sprouting stage plants to MC-RR treatments as well as the strong inhibitory effects resulting from prolonged irrigation further indicated that this MC-RR growth-inhibition may vary with the duration of irrigation and life stage of the plants. (c) 2007 Published by Elsevier Ltd.
SubtypeArticle
KeywordMicrocystin-rr Environmental Behavior Cropland Soils Adsorption Biodegradation Persistence Time Crop Plants
Department[Liu Bibo; Gong Yan; Xiao Bangding; Liu Jiantong; Liu Yongding] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China; [Liu Bibo; Gong Yan; Xiao Bangding] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Subject AreaEnvironmental Sciences ; Environmental Studies
DOI10.1016/j.jenvman.2006.12.040
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000252673300012
WOS KeywordCYANOBACTERIAL HEPATOTOXINS ; PLANT-GROWTH ; LR ; DEGRADATION ; HORMESIS ; ADSORPTION ; PROMOTION ; TOXICITY ; EXPOSURE ; PROTEIN
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/8288
Collection期刊论文
Corresponding AuthorLiu, JT, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Liu Bibo,Gong Yan,Xiao Bangding,et al. A laboratory study on risk assessment of microcystin-RR in cropland[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2008,86(3):566-574.
APA Liu Bibo,Gong Yan,Xiao Bangding,Liu Jiantong,Liu Yongding,&Liu, JT, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei, Peoples R China.(2008).A laboratory study on risk assessment of microcystin-RR in cropland.JOURNAL OF ENVIRONMENTAL MANAGEMENT,86(3),566-574.
MLA Liu Bibo,et al."A laboratory study on risk assessment of microcystin-RR in cropland".JOURNAL OF ENVIRONMENTAL MANAGEMENT 86.3(2008):566-574.
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