Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
COMPARATIVE SENSITIVITY OF SELENASTRUM-CAPRICORNUTUM AND LEMNA-MINOR TO 16 HERBICIDES
Autore:
FAIRCHILD JF; RUESSLER DS; HAVERLAND PS; CARLSON AR;
Indirizzi:
US GEOL SURVEY,BIOL RESOURCES DIV,FLORIDA CARIBBEAN SCI CTR,7920 NW 71ST ST GAINESVILLE FL 32653 US GEOL SURVEY,BIOL RESOURCES DIV,MIDWEST SCI CTR COLUMBIA MO 65201
Titolo Testata:
Archives of environmental contamination and toxicology
fascicolo: 4, volume: 32, anno: 1997,
pagine: 353 - 357
SICI:
0090-4341(1997)32:4<353:CSOSAL>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
EURASIAN WATERMILFOIL; WATER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
24
Recensione:
Indirizzi per estratti:
Citazione:
J.F. Fairchild et al., "COMPARATIVE SENSITIVITY OF SELENASTRUM-CAPRICORNUTUM AND LEMNA-MINOR TO 16 HERBICIDES", Archives of environmental contamination and toxicology, 32(4), 1997, pp. 353-357

Abstract

Aquatic plant toxicity tests are frequently conducted in environmental risk assessments to determine the potential impacts of contaminants on primary producers. An examination of published plant toxicity data demonstrates that wide differences in sensitivity can occur across phylogenetic groups of plants. Yet relatively few studies have been conducted with the specific intent to compare the relative sensitivity of various aquatic plant species to contaminants. We compared the relativesensitivity of the algae Selenastrum capricornutum and the floating vascular plant Lemna minor to 16 herbicides (atrazine, metribuzin, simazine, cyanazine, alachlor, metolachlor, chlorsulfuron, metsulfuron, triallate, EPTC, trifluralin, diquat, paraquat, dicamba, bromoxynil, and2,4-D). The herbicides studied represented nine chemical classes and several modes of action and were chosen to represent major current uses in the United States. Both plant species were generally sensitive tothe triazines (atrazine, metribuzin, simazine, and cyanazine), sulfonureas (metsulfuron and chlorsulfuron), pyridines (diquat and paraquat), dinitroaniline (trifluralin), and acetanilide (alachlor and metolachlor) herbicides. Neither plant species was uniformly more sensitive than the other across the broad range of herbicides tested. Lemna was more sensitive to the sulfonureas (metsulfuron and chlorsulfuron) and the pyridines (diquat and paraquat) than Selenastrum. However Selenastrum was more sensitive than Lemna to one of two thiocarbamates (triallate) and one of the triazines (cyanazine). Neither species was sensitiveto selective broadleaf herbicides including bromoxynil, EPTC, dicamba, or 2,4-D. Results were not always predictable in spite of obvious differences in herbicide modes of action and plant phylogeny. Major departures in sensitivity of Selenastrum occurred between chemicals withinindividual classes of the triazine, acetanilide, and thiocarbamate herbicides. Results indicate that neither species is predictively most sensitive, and that a number of species including a dicot species such as Myriophyllum are needed to perform accurate risk assessments of herbicides.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/09/20 alle ore 10:31:31