Toxicity, growth and accumulation relationships of copper, lead and zinc in the grey mangrove Avicennia marina (Forsk.) Vierh

MacFarlane, Geoff R.; Burchett, Margaret

doi:10.1016/s0141-1136(02)00095-8

Cited by 246 publications

(108 citation statements)

References 25 publications

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“…Yim and Tam (1999) found that, in general, very small amounts of heavy metals were accumulated in leaf tissues as most absorbed heavy metals were accumulated in stem and root tissue. MacFarlane (2002), MacFarlane and Burchett (2002) and MacFarlane et al (2003) indicate that root tissue has more potential as an environmental bioindicator than leaves. It is suggested that any further investigations within the L. racemosa population of Punta Mala Bay should include root metal level measurements as an aid to future management and, that for a better understanding of metal uptake, sampling should extend to other areas within the region to obtain a greater variety and extremes of environmental contamination levels.…”

Section: Discussionmentioning

confidence: 99%

An assessment of metal contamination in mangrove sediments and leaves from Punta Mala Bay, Pacific Panama

Defew

Mair

Guzmán

2005

Marine Pollution Bulletin

198

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Section: Discussionmentioning

confidence: 99%

An assessment of metal contamination in mangrove sediments and leaves from Punta Mala Bay, Pacific Panama

Defew

Mair

Guzmán

2005

Marine Pollution Bulletin

198

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“…However, previous studies indicate that effects of the interactions on bioaccumulation and toxicity of single metals and mixtures could not be interpreted completely in terms of competitive binding to biotic ligands [14,19,25]. Apart from competition for binding sites, joint toxicity of multiple metals is influenced by a number of other mechanisms, for example, the production of metal-binding proteins such as metallothionein, changes in the permeability of the plasma membrane induced by exposure to metal mixtures, and interactions between essential and nonessential metals [26][27][28][29][30][31][32]. These mechanisms are not taken into account in estimating toxicity of metal mixtures by the BLM approach, potentially contributing to deviations of predictions from measurements.…”

Section: Integration Of Ion-ion Interactions In Estimating Metal Toximentioning

confidence: 99%

Modeling toxicity of binary metal mixtures (Cu2+–Ag+, Cu2+–Zn2+) to lettuce, Lactuca sativa, with the biotic ligand model

Vijver

Hendriks

et al. 2012

Environmental Toxicology and Chemistry

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Abstract-The biotic ligand model (BLM) was applied to predict metal toxicity to lettuce, Lactuca sativa. Cu 2þ had the lowest median effective activity (EA50 M ), compared with Ag þ and Zn 2þ (EA50 Cu ¼ 2.60 Â 10 À8 M, EA50 Ag ¼ 1.34 Â 10 À7 M, EA50 Zn ¼ 1.06 Â 10 À4 M). At the 50% response level, the fraction of the total number of biotic ligands occupied by ions ( f50 M ) was lowest for Ag þ among the metals ( f50 Ag ¼ 0.22, f50 Cu ¼ 0.36, f50 Zn ¼ 0.42). Cu 2þ had the highest affinity for biotic ligands compared with Ag þ and Zn 2þ , as shown by stability constants of the cation-biotic ligand binding, expressed as log K MBL (log K CuBL ¼ 7.40, log K AgBL ¼ 6.39, log K ZnBL ¼ 4.00). Furthermore, the BLM was combined with the toxic equivalency factor approach in predicting toxicity of mixtures of Cu 2þ -Zn 2þ and Cu 2þ -Ag þ . The fraction of biotic ligands occupied by ions was used to determine the relative toxic potency of metals and the toxic equivalency quotient (TEQ) of mixtures. This approach allowed for including interactions in estimating mixture toxicity and showed good predictive power (r 2 ¼ 0.64-0.84). The TEQ at the 50% response level (TEQ50, Cu 2þ equivalents) for Cu 2þ -Zn 2þ mixtures was significantly lower than the value for Cu 2þ -Ag þ mixtures. Joint toxicity depended on both TEQ and specific composition of the mixture. The present study supports the use of the accumulation of metal ions at the biotic ligands as a predictor of toxicity of single metals and mixtures. Environ. Toxicol. Chem. 2013;32:137-143. # 2012 SETAC

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“…10). Este resultado provavelmente reflete a pequena taxa de translocação de metais pesados encontrada por MacFarlane & Burchett (2002), evidenciando pouca perturbação no metabolismo das plantas do local impactado. Ferreira & Aquila (2000) afirmam que as quantidades de metabólitos secundários podem variar em plantas de uma mesma espécie, de acordo com o local de ocorrência.…”

Section: Perfis Cromatográficosunclassified

Caracterização anatômica e perfis químicos de folhas de Avicennia schaueriana Stapf. & Leech. ex Moldenke e Rhizophora mangle L. de manguezais impactados e não impactados do litoral paulistadoi: 10.5007/2178-4574.2010v39p14

Silva¹,

Martins²,

Cavalheiro³

2010

INSULA

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Enviado em outubro de 2007, aprovado em novembro de 2010. RESUMO:Atualmente, os ecossistemas conhecidos como manguezais têm sido foco das mais variadas pesquisas, envolvendo estudos de fauna, flora, ecologia, entre outros. A demanda por conhecimentos sobre esse ecossistema provém, principalmente, da necessidade de se compreender as conseqüências das atuais e futuras ações humanas. No presente estudo, objetivou-se caracterizar a anatomia e comparar, juntamente com os perfis químicos, folhas de Avicennia schaueriana e Rhizophora mangle, provenientes de manguezais impactados (estuário do município de Santos) e não impactados (estuário do município de Peruíbe) do litoral de São Paulo, correlacionando as possíveis diferenças com fontes de impacto ambiental de cada área. Para A. schaueriana não foram observadas diferenças significativas com relação aos aspectos anatômicos. Já para R. mangle, observou-se maior densidade estomática em folhas do ambiente impactado, bem como aumento na espessura do parênquima paliçádico, diminuição do parênquima esponjoso e expansão da região dos feixes vasculares, na nervura central. Com relação à análise química, os grupos dos compostos apontados nos perfis cromatográficos diferem em quantidade e qualidade para R. mangle e apenas em quantidade para A. schaueriana. Doi: 10.5007/2178 1 Escola Superior de Agricultura "Luiz de Queiroz" -ESALQ/USP (Av. Pádua Dias, 11, 13418-900, CP 9, Piracicaba, SP, Brasil), E-mail: joaosil@ciagri.usp.br; 2 Universidade Estadual Paulista -UNESP Campus Experimental do Litoral Paulista (Praça Infante Dom Henrique, s/n, 11330-900, São Vicente, SP, Brasil), E-mail: bernadete@csv.unesp.br; 3 Universidade Estadual Paulista -UNESP Instituto de Química (R. Francisco Degni, s/n, 14800-900, Araraquara, SP, Brasil), e-mail: albjcava@iq.unesp.br. Este artigo é de Acesso Livre, disponibilizado sob os termos da Creative Commons Attribution 3.0 Unported License ( http://creativecommons.org/licenses/by/3.0/ ) que permite uso não-comercial, distribuição e reprodução em qualquer meio, desde que este trabalho original seja devidamente citado.

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Toxicity, growth and accumulation relationships of copper, lead and zinc in the grey mangrove Avicennia marina (Forsk.) Vierh

Cited by 246 publications

References 25 publications

An assessment of metal contamination in mangrove sediments and leaves from Punta Mala Bay, Pacific Panama

An assessment of metal contamination in mangrove sediments and leaves from Punta Mala Bay, Pacific Panama

Modeling toxicity of binary metal mixtures (Cu2+–Ag+, Cu2+–Zn2+) to lettuce, Lactuca sativa, with the biotic ligand model

<br>Caracterização anatômica e perfis químicos de folhas de <I>Avicennia schaueriana</I> Stapf. & Leech. ex Moldenke e <I>Rhizophora mangle</I> L. de manguezais impactados e não impactados do litoral paulista<p>doi: 10.5007/2178-4574.2010v39p14

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