Variation of δ13C in Aegiceras corniculatum seedling induced by cadmium application

Wei, Lili; Yan, Chongling; Wu, Guangdong; Xiao-yin, Guo; Ye, Binbin

doi:10.1007/s10646-008-0201-5

Cited by 7 publications

(5 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar to these studies' outcomes are those of Tam et al, (1997), Sur et al, (2006) and Wei et al, (2008). In addition, other likely implication of this observation is that the root might be acting as a barrier for heavy metal translocation thereby protecting the sensitive parts of the plant (e.g.…”

Section: Resultssupporting

confidence: 81%

Assessment of In-Situ Natural Dendroremediation Capability of Rhizophora racemosa in a Heavy Metal Polluted Mangrove Forest, Rivers State, Nigeria

Erakhrumen¹

2015

Journal of Applied Sciences and Environmental Management

View full text Add to dashboard Cite

Environmental pollution is assuming frightening dimensions in many parts of the world. This is not excluding Niger-Delta region of Nigeria where most of the country's oil and gas are sourced with attendant production of noxious substances as byproducts/residues/waste. Many of these noxious substances have been noted to be removable from polluted environment through proper application of phytoremediation techniques, particularly using native plant species. Consequently, this research was conceived to evaluate potentials for phytomediation by native red mangrove tree (Rhizophora racemosa G.F.W. Meyer). This was carried out by evaluating the presence of heavy metals ions and their bioconcentration levels in the samples of root and wood tissues axially along the stem of this tree. The sorrounding soil and water were also sampled and evaluated for presence and concentration of these metal ions in comparison with those for the sampled plant tissues. All the samples were sourced from a mangrove forest in Okrika, Rivers State, Nigeria. The samples from the root, butt, 50% and 90% bole length were oven-dried at 60±5 o C to constant weight, pulverised and heated with trioxonitrate (v) acid to achieve total dissolution before subjecting them to atomic absorption spectroscopy (AAS). Similarly, samples from sorrouding soil were dried at 35±2 o C to constant weight, crushed and sieved using a ≤ 2mm mesh before performing metal extraction and detection using AAS while water samples were also subjected to AAS for heavy metal analyses, in line with appropriate standard methods. The data obtained were statistically analysed using basic descriptive tools, Analyses of Variance and Fishers' Least Significant Difference (P < 0.05). Outcomes of these statistical analyses showed that, in terms of bio-concentration values, the evaluated metal ions that include Fe, Cu, Mn, Cd, Pb, Ni and Cr were more in the root than the surrounding soil and water. The bio-concentration trends, for the metal ions, also progressively declined from the root towards the crown of the trees. The bio-concentration distribution in all the tree sections showed an inconsistent pattern with Fe ions having higher bio-concentration. In addition, Cr, Ni, Pd and Cu also inconsistently followed Fe in terms of bio-concentration level. © JASEM http://dx

show abstract

Section: Resultssupporting

confidence: 81%

Assessment of In-Situ Natural Dendroremediation Capability of Rhizophora racemosa in a Heavy Metal Polluted Mangrove Forest, Rivers State, Nigeria

Erakhrumen¹

2015

Journal of Applied Sciences and Environmental Management

View full text Add to dashboard Cite

show abstract

“…Metal accumulation in the roots has also been found by other authors (Wei et al, 2008;Gupta and Chakrabarti, 2013). Greater arsenic retention in the roots is one of the defense mechanisms of plants (Meharg and Macnair, 1991).…”

Section: Discussionsupporting

confidence: 78%

Arsenic accumulation in Brassicaceae seedlings and its effects on growth and plant anatomy

Freitas-Silva

Araújo

Silva

et al. 2016

Ecotoxicology and Environmental Safety

View full text Add to dashboard Cite

We wished to evaluate the effects of arsenic on the morphology and anatomy of Brassica oleracea, Raphanus sativus, Brassica juncea, Brassica oleracea var. capitata and Brassica oleracea var. italica. Seeds were subjected to concentrations 0µM, 250µM, 350µM and 450µM arsenic in the form of sodium arsenate (Na2HAsO4·7H2O) during 12 days. All species accumulated more arsenic in the roots than in the shoots, except for B. oleracea var. capitata. There was no difference of translocation factor between species and treatments. Growth decrease was observed in roots of B. oleracea and R. sativus, and in shoots of R. sativus and B. oleracea var. italica. All species presented anatomical alterations in the roots, such as: cell hypertrophy, protoplast retraction, cellular plasmolysis, and necrotic regions. B. juncea presented collapse and hypertrophy of cells from the leaf blade tissues. Quantitative anatomical analyses performed on the root and leaves of B. oleracea and B. juncea revealed that arsenic interfered on the root vascular cylinder diameter and on height of epidermal cells of the adaxial leaf surface of both species. We concluded that arsenic was absorbed from the culture medium and induced alterations both on root and shoot growth of the seedlings. Retention of arsenic within the root was responsible for major damage in this organ.

show abstract

“…However, the changes in d 13 C were too subtle, in our opinion, to be the only cause of the notable reduction in growth detected. Wei et al (2008) observed that d 13 C was slightly affected by Cd exposure in mangrove (Aegiceras corniculatum (L.) Blanco) and roots were more sensitive than leaves. These authors observed that d 13 C also differed between plant parts, with assimilating organs showing lower values than non-assimilating or storage organs.…”

Section: Discussionmentioning

confidence: 98%

Accumulation and toxic effects of chromium and zinc in Iris pseudacorus L.

et al. 2012

View full text Add to dashboard Cite

The aim of the present study was to examine the ability of I. pseudacorus L., an ornamental macrophyte of great potential for phytoremediation, to tolerate and accumulate Cr and Zn. Plants were grown in nutritive solution with ZnCl 2 or CrCl 3 Á6H 2 O at 0, 10, 50, 100, and 200 lg ml -1 for 5 weeks; all survived and continued growing. The accumulation of Cr and Zn increased with increasing supply in all plant tissues, to reach 59.97 mg Cr and 25.64 mg Zn in roots. Leaves retained a remarkable amount of Zn (14.2 mg). Growth inhibition reached 65% and 31% (dry weight) in response to Cr and Zn, respectively. The root:shoot dry matter partitioning (R/S) increased 80% at 100 lg ml -1 CrCl 3 . The most marked alterations in mineral content were in roots, where both metals decreased Al, Ca, Mg, Mn and S, and increased P concentration. No effect was noted on either leaf chlorophyll fluorescence kinetics (F v /F m and U PSII ), or photosynthetic pigment content, signifying that the light phase of photosynthesis was not impaired. Carbon isotope composition (d 13 C) was only slightly heavier, indicating that the reduction of carbon fixation was not the main cause for growth decrease. This was attributed to the restricted mineral uptake and to the increased demand of carbohydrates of damaged roots. Biomass allocation to rhizomes (Cr) or roots (Zn) contributes to heavy metal tolerance by limiting transpiration and increasing metal-storing tissues and the surface for water and cation uptake. This species is a good candidate for Cr rhizofiltration and Zn phytoextraction.

show abstract

Variation of δ13C in Aegiceras corniculatum seedling induced by cadmium application

Cited by 7 publications

References 28 publications

Assessment of <i>In-Situ</i> Natural Dendroremediation Capability of <i>Rhizophora racemosa</i> in a Heavy Metal Polluted Mangrove Forest, Rivers State, Nigeria

Assessment of <i>In-Situ</i> Natural Dendroremediation Capability of <i>Rhizophora racemosa</i> in a Heavy Metal Polluted Mangrove Forest, Rivers State, Nigeria

Arsenic accumulation in Brassicaceae seedlings and its effects on growth and plant anatomy

Accumulation and toxic effects of chromium and zinc in Iris pseudacorus L.

Contact Info

Product

Resources

About