Accumulation of trace metals in grey mangrove Avicennia marina fine nutritive roots: The role of rhizosphere processes

Chaudhuri, Punarbasu; Nath, Bibhash; Birch, G.F.

doi:10.1016/j.marpolbul.2013.11.024

Cited by 90 publications

(38 citation statements)

References 42 publications

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“…Machado et al (2005) suggested that the seedlings of mangrove species can exclude some trace elements through iron plaque formation on the roots. The oxygen released by the roots of some mangrove species may promote oxidizing conditions within the rhizosphere, which results in trace elements precipitation at the root surface, creating iron-rich root coatings, generally called iron plaques (Chaudhuri et al 2014, Koch and Mendelssohn 1989, Zhou et al 2011. Machado et al (2005) also demonstrated that the washing of the roots prior to analysis influences the fixation of the iron plaque on the roots: in contrary to distilled water, the dithionitecitrate-bicarbonate (DCB) solution is able to extract the iron plaque from the roots.…”

Section: Trace Elements In Snailsmentioning

confidence: 99%

Bioaccumulation of some trace elements in tropical mangrove plants and snails (Can Gio, Vietnam)

Thanh‐Nho

Marchand

Strady

et al. 2019

Environmental Pollution

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Mangrove sediments can store high amount of pollutants that can be more or less bioavailable depending on environmental conditions. When in available forms, these elements can be subject to an uptake by mangrove biota, and can thus become a problem for human health. The main objective of this study was to assess the distribution of some trace elements (Fe, Mn, Co, Ni, Cr, As, and Cu) in tissues of different plants and snails in a tropical mangrove (Can Gio mangrove Biosphere Reserve) developing downstream a megacity (Ho Chi Minh City, Vietnam). In addition, we were interested in the relationships between mangrove habitats, sediment quality and bioaccumulation in the different tissues studied. Roots and leaves of main mangrove trees (Avicennia alba and Rhizophora apiculate) were collected, as well as different snail species: Chicoreus capucinus, Littoraria melanostoma, Cerithidea obtusa, Nerita articulata. Trace elements concentrations in the different tissues were determined by ICP-MS after digestion with concentrated HNO3 and H2O2. Concentrations differed between stands and tissues, showing the influence of sediment geochemistry, species specific requirements, and eventually adaptation abilities. Regarding plants tissues, the formation of iron plaque on roots may play a key role in preventing Fe and As translocation to the aerial parts of the mangrove trees. Mn presented higher concentrations in the leaves than in the roots, possibly because of physiological requirements. Nonessential elements (Ni, Cr and Co) showed low bioconcentration factors (BCF) in both roots and leaves, probably resulting from their low bioavailability in sediments. Regarding snails, essential elements (Fe, Mn, and Cu) were the dominant ones in their tissues. Most of snails were "macroconcentrators" for Cu, with BCF values reaching up to 42.8 for Cerithidea. We suggest that high quantity of As in all snails may result from its high bioavailability and from their ability to metabolize As.

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Section: Trace Elements In Snailsmentioning

confidence: 99%

Bioaccumulation of some trace elements in tropical mangrove plants and snails (Can Gio, Vietnam)

Thanh‐Nho

Marchand

Strady

et al. 2019

Environmental Pollution

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“…Zn concentrations in the different plant parts were not measured, but data from arid‐zone mangroves (Alongi et al ) indicates less accumulation in live (15.2–16.2 μg g −1 DW) vs. dead (21.4–23.8 μg g −1 DW) fine roots for Rhizophora stylosa and A. marina ; Zn excretion via leaves in A. marina (MacFarlane and Burchett ) was confirmed as Zn concentrations in leaves (14.3 μg g −1 DW) where nearly as great as in live roots, whereas in R. stylosa , leaf Zn concentrations were not (6.6 μg g −1 DW) as high. The role of the rhizosphere as a bioaccumulation zone is supported by data from field studies (Hossain and Othman ; Shete et al ; Zhou et al ; Chaudhuri et al ; Naidoo et al ).…”

Section: Discussionmentioning

confidence: 87%

“…This factorial experiment showed that Cu-limited mangroves grow fastest with increasing rates of Fe supply and that both metals were co-limiting. At high concentrations copper, like nearly all metals, can be toxic if the concentrations are high enough (MacFarlane and Burchett 2000, 2001, 2002MacFarlane et al2007;Zhou et al 2011;Cheng et al 2012;Gonz alez-Mendoza et al 2013;Chaudhuri et al 2014; Naidoo et al 2014). The experiments of Cheng et al (2012) showed that sublethal amounts of copper inhibited plant growth but also root permeability, with a decrease in root porosity, thickening of the exodermis and an increase in lignification, forming an impermeable barrier to copper.…”

Section: Growth Characteristicmentioning

confidence: 99%

Micronutrients and mangroves: Experimental evidence for copper limitation

Alongi

2017

Limnology & Oceanography

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Testing the availability and requirements of micronutrients during early mangrove growth is essential for understanding their recruitment success across intertidal gradients. Recent research has highlighted the role of dissolved iron in mangrove growth, but the role of other trace metals (Cu, Zn, Mo) in supporting and possibly limiting tree growth is unknown. In outdoor experiments, dissolved copper, supplied at a rate mimicking those in natural forests, limited early growth of five species of mangroves. Rates of stem extension and biomass increase from seedling to sapling stage of Rhizophora apiculata, Bruguiera gymnorrhiza, Avicennia marina, and Ceriops tagal increased linearly with increasing rates of Cu supply (0.0 μmol m−2 d−1, 0.005 μmol m−2 d−1, 0.01 μmol m−2 d−1, 0.02 μmol m−2 d−1, and 0.05 μmol m−2 d−1); early growth of Xylocarpus moluccensis best‐fit Gaussian curves with maximal growth at a Cu supply rate of 0.02 μmol m−2 d−1 with toxicity evident at the highest Cu supply rate. Most copper was stored in roots and leaves. Zinc and molybdenum were not limiting for growth of any of the five species, but X. moluccensis growth declined with increasing Mo supply, suggesting lower tolerance and greater toxicity. Differences in such requirements among species, especially during early establishment, may be a key driver in fostering changing patterns in species composition among forests.

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“…The mangrove ecosystem has numerous ecological and economic important functions (Alongi, 2002;Aksornkoae, 2004;Walters et al 2008;Hogarth, 2015), including their capability in retaining pollutants, such as metals, to adjacent marine environment (MacFarlane, Pulkownik, & Burchett, 2003;Silva, Da Silva, & De Oliveira, 2006;Chaudhuri, Nath, & Birch, 2014). Zinc is an essential element for plant growth (Broadley, White, Hammond, Zelko, & Lux, 2007), including mangroves (Marchand, Fernandez, & Moreton, 2016), which becomes one of the important topics studied in mangrove ecosystems.…”

Section: Introductionmentioning

confidence: 99%

Interactions Between Environmental Factors and Zinc Concentrations in Porewater and Roots of Rhizophora sp. in Ampallas, Mamuju, West Sulawesi, Indonesia

Isyrini¹,

Werorilangi²,

Mashoreng³

et al. 2018

Molekul

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The study was to determine the concentrations of Zn in porewater and fine roots of Rhizophora sp., and to examine their interactions with mangrove densities and physico-chemical. Porewater samples, fine roots, and sediments were collected in a 100 m 2 plot at each site with different mangrove densities. The average Zn concentrations in mangrove roots in the study area were 0 -58.21 mg/kg, suggested the capability of mangrove roots in retaining Zn. The average dissolved Zn concentrations in porewater were 0.63 mg/L -3.50 mg/L, illustrated the amount of Zn bioavailable form and its potential release to the adjacent environment. The Zn concentrations in porewater did not correlate significantly with the densities of mangroves. The concentrations of Zn in roots increased as the densities were higher, which is possibly caused by the absence of mangrove at Site 1. The study discovered the important roles of organic content and silt/clay in Zn sorption thus affect Zn levels in porewater. The concentrations of Zn in mangrove roots increased as the pH of sediment and porewater decreased.

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Accumulation of trace metals in grey mangrove Avicennia marina fine nutritive roots: The role of rhizosphere processes

Cited by 90 publications

References 42 publications

Bioaccumulation of some trace elements in tropical mangrove plants and snails (Can Gio, Vietnam)

Bioaccumulation of some trace elements in tropical mangrove plants and snails (Can Gio, Vietnam)

Micronutrients and mangroves: Experimental evidence for copper limitation

Interactions Between Environmental Factors and Zinc Concentrations in Porewater and Roots of Rhizophora sp. in Ampallas, Mamuju, West Sulawesi, Indonesia

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