Bioaccumulation and chemical forms of cadmium, copper and lead in aquatic plants

Hu, Jian; Ai-zhen, Zheng; Pei, Dongli; Shi, Guoxin

doi:10.1590/s1516-89132010000100029

Cited by 22 publications

(16 citation statements)

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“…Th erefore, it is to be expected that signifi cant quantities of herbicide, fertilizer and fungicide residues would be present in the environment, contributing to copper accumulation and phytotoxicity (Hu et al 2010). Considering the negative impact of copper on R. diphyllum germination and sporophyte development, we can posit that contamination of aquatic environments resulting from agricultural activities, especially rice cultivation, poses a risk to the establishment and conservation of natural populations of this already vulnerable species.…”

Section: Discussionmentioning

confidence: 99%

“…Aquatic ecosystems can be contaminated by heavy metals as a result of natural processes, such as the weathering of rocks, as well as by anthropogenic infl uences such as industrial activities, agricultural activities and domestic effl uents (Soares et al 2000;Hu et al 2010). Because of its widespread use in pesticides and because it is a byproduct of many industrial activities, copper is considered to be a major pollutant (Mal et al 2002).…”

Section: Introductionmentioning

confidence: 99%

“…Rice cultivation contributes to surface and groundwater contamination, because agrochemicals are applied in large quantities to control weeds and to supplement mineral nutrients (FEPAM 2012). Copper accumulation in plants and the consequent phytotoxicity can be attributed to the copper content of the herbicides, fertilizers and fungicides oft en used in agriculture (Baker 1990, Mal et al 2002, Hu et al 2010. Because plants are known to have diff erent degrees of resistance to heavy metals and to vary in their capacity to accumulate heavy metals (Baker et al 2000), toxic residues of agrochemicals can aff ect non-target species that naturally occur in wetlands, thereby compromising their conservation status (Terra et al 2008;Droste et al 2010).…”

Section: Introductionmentioning

confidence: 99%

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Germination and sporophytic development of Regnellidium diphyllum Lindm. (Marsileaceae) in the presence of copper

et al. 2013

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Regnellidium diphyllum Lindm. is a heterosporous fern growing in wetlands and humid soils that are being converted to agricultural activities. Many products that are used in agriculture contain copper, resulting in surface and groundwater contamination. Germination and initial development tests were performed using Meyer's solution containing copper sulphate at concentrations of 0 (control), 1, 5, 10, 50 and 100 mg L −1 . Th e experiment was conducted in a growth chamber at 25 ± 1°C for 28 days, with a 12/12-hour light/dark cycle and a photon fl ux density of 100 μmol m −2 s −1. Th e lowest germination rate (6%) was observed at 100 mg L −1 . Primary root growth was signifi cantly reduced at ≥ 10 mg L −1 . Secondary leaves of sporophytes grown in concentrations ≥ 5 mg L −1 were progressively shorter than were those formed by the control plants. We conclude that the release of pollutants containing copper into the natural habitats of R. diphyllum can cause phytotoxicity, threatening the establishment of populations and worsening the already vulnerable conservation status of this species.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Germination and sporophytic development of Regnellidium diphyllum Lindm. (Marsileaceae) in the presence of copper

et al. 2013

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“…The accumulation of metals in the root system appears to minimize any major effect on the biomass production and to reduce the harmful symptoms (Verkleij and Prast, 1989). Such strategy occurs with several plants and appears to allow the plants to withstand higher metal concentrations (Vitória et al, 2001;Hu et al, 2010;Monteiro et al, 2011). Although higher Cr, Zn and Pb concentration were observed in the roots from the medium PSR, these values were high enough to be detected in the plants from other polluted rivers (Soltan and Rashed, 2003;Mangabeira et al, 2004;Lu et al, 2004;OlivaresRieumont, 2007).…”

Section: Discussionmentioning

confidence: 99%

Structural and ecophysiological alterations of the water hyacinth [Eichhornia crassipes (Mart.) Solms] due to anthropogenic stress in Brazilian rivers

Vitória

Lage-Pinto

Campaneli

et al. 2011

Braz. arch. biol. technol.

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“…Most metals are persistent and accumulate in aquatic and terrestrial environments, posing a threat to biodiversity and to human health (Sharma and Dubey, 2005;Mishra and Tripathi, 2008;Hu et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Lead tolerance and accumulation in initial sporophytes of Regnellidium diphyllum Lindm. (Marsileaceae)

2015

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Regnellidium diphyllum Lindm. is a heterosporous fern which grows in shallow waters and wetlands, and water pollution contributes to its vulnerability. Environmental lead contamination is mostly caused by industrial and agricultural residues as well as domestic sewage. Given its persistence in the environment, lead can cause important toxicity in living organisms. Megaspore germination and the initial growth of R. diphyllum sporophytes were assessed in Meyer's solution with lead nitrate (Pb(NO 3 ) 2 ) concentrations of 0 (control), 1, 5, 10 and 50 mg L -1. The study was conducted in a growth chamber at 25±1°C and a 12 hour photoperiod with a nominal irradiance of 100 μmol m -2 s -1 , for 28 days. Lead concentration in sporophytes was assessed using atomic absorption spectrometry. In the absence of lead, 74% of spores germinated, while significantly lower germination percentages were observed in Pb(NO 3 ) 2 concentrations of 1, 10 and 50 mg L -1. The presence of lead did not significantly influence root growth. At 28 days, primary leaf development was significantly lower in Pb(NO 3 ) 2 concentrations of 5 mg L -1 and higher in relation to the control. The length of secondary leaves did not significantly differ between sporophytes exposed to different concentrations of lead and those of the control at 28 days. Sporophytes exposed to 10 and 50 mg L -1 Pb(NO 3 ) 2 accumulated 1129 mg kg -1 and 5145 mg kg -1 of Pb, respectively. The presence of high levels of lead in R. diphyllum sporophytes did not prevent initial development. Future studies should investigate the ability of the species to accumulate and tolerate high levels of lead in advanced stages of its development and in environmental conditions. Keywords: wetlands, species conservation, fern, heavy metals, pollutant. Tolerância e acumulação de chumbo em esporófitos jovens deRegnellidium diphyllum Lindm. (Marsileaceae) ResumoRegnellidium diphyllum Lindm. é uma samambaia heterosporada que se desenvolve em águas rasas ou em solos úmidos, sendo que a poluição da água contribui para sua vulnerabilidade. A contaminação ambiental por chumbo ocorre principalmente por resíduos industriais e agrícolas, bem como por efluentes domésticos. Devido à sua persistência no ambiente, esse metal pode apresentar importante toxicidade aos organismos vivos. A germinação de megásporos e o desenvolvimento inicial de esporófitos de R. diphyllum foram avaliados em solução de Meyer com concentrações de 0 (controle), 1, 5, 10 e 50 mg L -1 de nitrato de chumbo (Pb(NO 3 ) 2 ). O estudo foi conduzido em câmara de germinação a 25±1 °C e fotoperíodo de 12 horas sob irradiância nominal de 100 μmol m -2 s -1 , por 28 dias. A concentração de chumbo em esporófitos foi analisada por espectrometria de absorção atômica. Na ausência de chumbo, 74% dos esporos germinaram, enquanto que porcentagens de germinação significantemente menores foram observadas nas concentrações de 1, 10 e 50 mg L -1 de Pb(NO 3 ) 2 . A presença de chumbo não influenciou significativamente o crescimento das raízes. O d...

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Bioaccumulation and chemical forms of cadmium, copper and lead in aquatic plants

Abstract: The cadmium (Cd), copper (Cu) and lead (Pb)

Cited by 22 publications

References 16 publications

Germination and sporophytic development of Regnellidium diphyllum Lindm. (Marsileaceae) in the presence of copper

Germination and sporophytic development of Regnellidium diphyllum Lindm. (Marsileaceae) in the presence of copper

Structural and ecophysiological alterations of the water hyacinth [Eichhornia crassipes (Mart.) Solms] due to anthropogenic stress in Brazilian rivers

Lead tolerance and accumulation in initial sporophytes of Regnellidium diphyllum Lindm. (Marsileaceae)

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