Uptake of pesticides from water by curly waterweed Lagarosiphon major and lesser duckweed Lemna minor.

Uptake of pesticides from water by curly waterweed Lagarosiphon major and lesser duckweed Lemna minor. Research Abstract Details 

Research Abstract Table of Contents

Jump to the:

Uptake of pesticides from water by curly waterweed Lagarosiphon major and lesser duckweed Lemna minor. Abstract Text:

Renato F de Carvalho,Richard H Bromilow,Richard Greenwood,

The uptake of pesticides from water by two aquatic plants, the submersed Lagarosiphon major (Ridley) Moss and the floating duckweed Lemna minor L., was measured over periods of up to 72 h. Twelve non-ionised pesticides and analogues, chosen to span a wide range of physicochemical properties, and one analogue (3,5-D) of the phenoxyacetic acid herbicide 2,4-D were studied. Concentrations of the parent compound were determined in the plants following extraction and separation by chromatography. Quantification was by liquid scintillation counting for the (14)C-labelled compounds and by high-performance liquid chromatography for the four non-radiolabelled commercial pesticides. Uptake for all compound and plant combinations had reached equilibrium by 24 h. Accumulation of compound in the plant could be described well for most non-ionised compounds by equilibration into the aqueous phase in the plant cells together with partitioning onto the plant solids, this latter process becoming dominant in Lagarosiphon for compounds with log K(ow) > 1 and in Lemna for compounds with log K(ow) > 1.8. Lipophilic compounds with log K(ow) > 4 were concentrated more than 100-fold on a fresh-weight basis. However, the uptake of isoproturon and chlorotoluron was up to threefold less than expected from their K(ow) values, and their behaviour was better explained using solvation descriptors. Uptake of the acid 3,5-D was dependent on solution pH, this compound being strongly taken up at lower pH by the process of ion trapping, as previously observed in barley roots. Aquatic vegetation can thus rapidly accumulate pesticides, and could be an important sink especially for lipophilic pesticides reaching well-vegetated waters.

Uptake of pesticides from water by curly waterweed Lagarosiphon major and lesser duckweed Lemna minor. Publishing Authors By Initials

RF de Carvalho,RH Bromilow,R Greenwood,

For similar biological phenomena, cell phenomena, and immunity: plant physiology: plant transpiration research abstracts see: biological phenomena, cell phenomena, and immunity: plant physiology: plant transpiration research

PUBMED ID PMID:

MEDLINE DATE:

Uptake of pesticides from water by curly waterweed Lagarosiphon major and lesser duckweed Lemna minor. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Pest management science

VOLUME: 63

Page Numbers: 789-97

Journal Abbreviation: Pest Manag. Sci.

ISSN: 1526-498X

DAY: 3

MONTH: Aug

YEAR: 2007

Uptake of pesticides from water by curly waterweed Lagarosiphon major and lesser duckweed Lemna minor. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 100898744

Uptake of pesticides from water by curly waterweed Lagarosiphon major and lesser duckweed Lemna minor. Keywords Mesh Terms:

KEYWORDS: Plant Transpiration

MESH TERMS: physiology

Chemical & Substance for Abstract: Uptake of pesticides from water by curly waterweed Lagarosiphon major and lesser duckweed Lemna minor. Information

Substance Name: 2,4-Dichlorophenoxyacetic Acid

Registry Number: 94-75-7

Grant and Affiliation Information for Uptake of pesticides from water by curly waterweed Lagarosiphon major and lesser duckweed Lemna minor.

AFFILIATION: Rothamsted Research, Harpenden, Herts AL5 2JQ, UK.

Country: England

AGENCY:

GRANT:

ACRONYM:

MEDLINETA: Pest Manag Sci

REFSOURCE:

DATABASENAME:

ACCESSION NUMBER:

Number Hits: 0

Uptake of pesticides from water by curly waterweed Lagarosiphon major and lesser duckweed Lemna minor Related Publications

• A cholera centenary.
• A proposed definition of regenerative medicine.
• Common skin disorders of the army in the tropics.
• Complement factor H deficiency in aged mice causes retinal abnormalities and visual dysfunction.
• Constructing 1/omegaalpha noise from reversible Markov chains.
• Corticosteroids for acute bacterial meningitis.
• Cost-Effective Violence Prevention through Targeted Family Interventions.
• Detailed developmental morphology of the spermatophore of the Mediterranean field cricket, Gryllus bimaculatus (De Geer) (Orthoptera: Gryllidae).
• Dietary influences on cognitive function with aging: from high-fat diets to healthful eating.
• Effects of a non-transdermal energy patch on indices of aerobic power performance: 2078: board #148 may 31 3:30 PM - 5:00 PM.
• Functional plasticity in cognitive aging: review and hypothesis.
• Meningococcal carriage in the African meningitis belt.
• Microheterogeneity and coevolution: an examination of rDNA sequence characteristics in Neoparamoeba pemaquidensis and its prokinetoplastid endosymbiont.
• Paraphysial cysts of the third ventricle; with report of eight cases.
• Phosphoinositide binding regulates {alpha}-actinin CH2 domain structure: Analysis by hydrogen/deuterium exchange mass spectrometry.
• Phosphorylation of vascular endothelial cadherin controls lymphocyte emigration.
• Pr41p empty drum . . . The welder's bomb?
• Primary care. Match of the day.
• Relational care: learning to look beyond intentionality to the 'non-intentional' in a caring relationship.
• Simple statistics of cancer.
• Some suggestions for handling children in the X-ray department.
• Sulphur compounds of the genus Allium; detection of n-prophylthiol in the onion; the fission and methylation of diallyl disulphide in cultures of Scopulariopsis brevicaulis.
• Systematic review: Impact of meningococcal vaccination on pharyngeal carriage of meningococci.
• The safety of amodiaquine use in pregnant women.
• Treatment of menopausal symptoms by qualified herbal practitioners: a prospective, randomized controlled trial.
• Tropical lichenoid dermatitis.
• Troponin-I concentration 72 h after myocardial infarction correlates with infarct size and presence of microvascular obstruction.
• Uptake and translocation of non-ionised pesticides in the emergent aquatic plant parrot feather Myriophyllum aquaticum.
• Uptake of pesticides from water by curly waterweed Lagarosiphon major and lesser duckweed Lemna minor.
• Venous pressure and cutaneous reactive hyperemia in exhausting exercise and certain other circulatory stresses.