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Titolo:
Evaluation of different algal species sensitivity to mercury and metolachlor by PAM-fluorometry
Autore:
Juneau, P; Dewez, D; Matsui, S; Kim, SG; Popovic, R;
Indirizzi:
Univ Quebec, Dept Chim Biochim, TOXEN, Montreal, PQ H3C 3P8, Canada Univ Quebec Montreal PQ Canada H3C 3P8 OXEN, Montreal, PQ H3C 3P8, Canada Kyoto Univ, Res Ctr Environm Qual Control, Otsu, Shiga 520, Japan Kyoto Univ Otsu Shiga Japan 520 ronm Qual Control, Otsu, Shiga 520, Japan Hyundai Inst Ecomanagement, Environm Management Div, Kye Dong Chongro Ku, Seoul 110793, South Korea Hyundai Inst Ecomanagement Seoul South Korea 110793 110793, South Korea
Titolo Testata:
CHEMOSPHERE
fascicolo: 4-5, volume: 45, anno: 2001,
pagine: 589 -
SICI:
0045-6535(200111)45:4-5<589:EODASS>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHLOROPHYLL FLUORESCENCE; PHOTOSYSTEM-II; IN-VIVO; COPPER; TOXICITY; PLANTS; YIELD; TOOL;
Keywords:
algae sensitivity; bioassays; fluorescence; mercury; metolachlor;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Popovic, R Univ Quebec, Dept Chim Biochim, TOXEN, Case Postale 8888,Succursalle Ctr Ville, Montreal, PQ H3C 3P8, Canada Univ Quebec Case Postale 8888,Succursalle Ctr Ville Montreal PQ Canada H3C 3P8
Citazione:
P. Juneau et al., "Evaluation of different algal species sensitivity to mercury and metolachlor by PAM-fluorometry", CHEMOSPHERE, 45(4-5), 2001, pp. 589

Abstract

In this study, the pulse-amplitude-modulation (PAM)-fluorometric method was used to evaluate the difference in the sensitivity to mercury (Hg) and metolachlor of six algal species: Ankistrodesmus falcatus, Selenastrum capricornutum, Chlorella vulgaris, Nannoplankton (PLS), Microcystis aeruginosa and Pediastrum biwae. We found that the fluorescence parameters (phi (M), themaximal photosystem II (PSII) quantum yield, phi'(M), the operational PSIIquantum yield at steady state of electron transport, Q(P), the photochemical quenching value, and Q(N), the non-photochemical quenching value) were appropriate indicators for inhibitory effects of mercury but only phi'(M) and Q(N) were useful for metolachlor. The examined algal species showed very different levels of sensitivity to the effect of Hg and of metolachlor. Themost sensitive species to Hg and metolachlor were respectively M. aeruginosa and A. falcatus, while the least sensitive were C. vulgaris and P. biwae. We interpreted these differences by the action mode of pollutants and by the different metabolism properties and morphological characteristics between algal species. These results related to fluorescence parameters may offer useful tool to be used in bioassay for different pollutants. Heterogeneous algal sensitivity to the same pollutant suggests the need to use a battery of species to evaluate the effects of mixtures of pollutants in aquatic systems. Crown Copyright (C) 2001 Published by Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/09/20 alle ore 14:25:38