Show simple item record

dc.contributor.authorPark, J
dc.contributor.authorBrown, Murray
dc.contributor.authorDepuydt, S
dc.contributor.authorKim, JK
dc.contributor.authorWon, D-S
dc.contributor.authorHan, T
dc.date.accessioned2016-11-09T12:12:27Z
dc.date.available2016-11-09T12:12:27Z
dc.date.issued2017-01-01
dc.identifier.issn0269-7491
dc.identifier.issn1873-6424
dc.identifier.urihttp://hdl.handle.net/10026.1/6695
dc.description.abstract

An ecological impact assessment of four herbicides (atrazine, diuron, paraquat and simazine) was assessed using the aquatic floating vascular plants, Lemna gibba, Lemna minor and Lemna paucicostata as test organisms. The sensitivity of several ecologically relevant parameters (increase in frond area, root length after regrowth, maximum and effective quantum yield of PSII and maximum electron transport rate (ETRmax), were compared after a 72 h exposure to herbicides. The present test methods require relatively small sample volume (3 mL), shorter exposure times (72 h), simple and quick analytical procedures as compared with standard Lemna assays. Sensitivity ranking of endpoints, based on EC50 values, differed depending on the herbicide. The most toxic herbicides were diuron and paraquat and the most sensitive endpoints were root length (6.0-12.3 μg L-1) and ETRmax (4.7-10.3 μg L-1) for paraquat and effective quantum yield (6.8-10.4 μg L-1) for diuron. Growth and chlorophyll a fluorescence parameters in all three Lemna species were sensitive enough to detect toxic levels of diuron and paraquat in water samples in excess of allowable concentrations set by international standards. CV values of all EC50s obtained from the Lemna tests were in the range of 2.8-24.33%, indicating a high level of repeatability comparable to the desirable level of <30% for adoption of toxicity test methods as international standards. Our new Lemna methods may provide useful information for the assessment of toxicity risk of residual herbicides in aquatic ecosystems.

dc.format.extent818-827
dc.format.mediumPrint-Electronic
dc.languageen
dc.language.isoen
dc.publisherElsevier BV
dc.subjectHerbicides
dc.subjectLemna
dc.subjectFrond area
dc.subjectRoot length
dc.subjectChlorophyll a fluorescence
dc.subjectToxicity
dc.titleComparing the acute sensitivity of growth and photosynthetic endpoints in three Lemna species exposed to four herbicides
dc.typejournal-article
dc.typeComparative Study
dc.typeJournal Article
plymouth.author-urlhttps://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000390732300007&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=11bb513d99f797142bcfeffcc58ea008
plymouth.issuePt B
plymouth.volume220
plymouth.publication-statusPublished
plymouth.journalEnvironmental Pollution
dc.identifier.doi10.1016/j.envpol.2016.10.064
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA/UoA06 Agriculture, Veterinary and Food Science
plymouth.organisational-group/Plymouth/Research Groups
plymouth.organisational-group/Plymouth/Research Groups/Marine Institute
dc.publisher.placeEngland
dcterms.dateAccepted2016-10-22
dc.rights.embargodate2017-10-31
dc.identifier.eissn1873-6424
dc.rights.embargoperiodNot known
rioxxterms.versionofrecord10.1016/j.envpol.2016.10.064
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2017-01-01
rioxxterms.typeJournal Article/Review
plymouth.oa-locationhttp://dx.doi.org/10.1016/j.envpol.2016.10.064


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record


All items in PEARL are protected by copyright law.
Author manuscripts deposited to comply with open access mandates are made available in accordance with publisher policies. Please cite only the published version using the details provided on the item record or document. In the absence of an open licence (e.g. Creative Commons), permissions for further reuse of content should be sought from the publisher or author.
Theme by 
Atmire NV