The Assessment of Phytoremediation Potential of Invasive Weed Amaranthus spinosus L.

Chinmayee, M. Devi; Mahesh, B.; Pradesh, S.; Mini, I; Swapna, T. S.

doi:10.1007/s12010-012-9657-0

Cited by 64 publications

(23 citation statements)

References 14 publications

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“…Similarly, a reduction in sugar concentrations has been reported for roots (Costa & Spitz, ; Podazza et al ., ; Mahajan et al ., ) and, at very high exposures, for shoots as well (Ci et al ., ; Nayek et al ., ). Plants tolerant to high metal exposure maintain photosynthesis rates and show an increase in soluble sugar concentrations in roots (Chinmayee et al ., ; He et al ., ), as found here for G. claussenii . This increase in sugars can be a result of a higher demand for energy by sink tissues, such as roots and stems, to accommodate the high accumulation of Zn and Cd.…”

Section: Discussionmentioning

confidence: 99%

Gomphrena claussenii, a novel metal‐hypertolerant bioindicator species, sequesters cadmium, but not zinc, in vacuolar oxalate crystals

et al. 2015

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SummaryGomphrena claussenii is a recently described zinc (Zn)-and cadmium (Cd)-hypertolerant Amaranthaceae species displaying a metal bioindicator Zn/Cd accumulation response. We investigated the Zn and Cd distribution in stem and leaf tissues of G. claussenii at the cellular level, and determined metabolite profiles to investigate metabolite involvement in Zn and Cd sequestration.Gomphrena claussenii plants exposed to high Zn and Cd supply were analysed by scanning electron microscopy with energy-dispersive X-ray (SEM-EDX) and micro-proton-induced X-ray emission (micro-PIXE). In addition, gas chromatography-time of flight-mass spectrometry (GC-TOF-MS) was used to determine metabolite profiles on high Zn and Cd exposure.Stem and leaf tissues of G. claussenii plants exposed to control and high Cd conditions showed the abundant presence of calcium oxalate (CaOx) crystals, but on high Zn exposure, their abundance was strongly reduced. Ca and Cd co-localized to the CaOx crystals in Cd-exposed plants. Citrate, malate and oxalate levels were all higher in shoot tissues of metal-exposed plants, with oxalate levels induced 2.6-fold on Zn exposure and 6.4-fold on Cd exposure.Sequestration of Cd in vacuolar CaOx crystals of G. claussenii is found to be a novel mechanism to deal with Cd accumulation and tolerance.

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Section: Discussionmentioning

confidence: 99%

Gomphrena claussenii, a novel metal‐hypertolerant bioindicator species, sequesters cadmium, but not zinc, in vacuolar oxalate crystals

et al. 2015

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“…Bio-accumulation Factor (BAF) is used to quantify the toxic element accumulation efficiency in plants by comparing the concentration in the plant part and an external medium [33]. BAF has been categorised as: <1 excluder, 1 -10 accumulator and >10…”

Section: Sample Collection and Analysismentioning

confidence: 99%

“…A plant's ability to translocate metals from the roots to the shoots is measured using the TF [33] and TF > 1 signifies that the plant effectively translocates heavy metals from roots to the shoots [35].…”

Section: Sample Collection and Analysismentioning

confidence: 99%

Heavy Metal Accumulation Potential of Some Wetland Plants Growing Naturally in the City of Kolkata, India

Jha¹,

Samal²,

Santra³

et al. 2016

AJPS

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Freshwaters are not only used locally in many developing countries but they are often over exploited for domestic purposes, agriculture and disposal of industrial wastes which result in an overload of excess nutrients, harmful chemicals and heavy metals. Plant species together with sediments and water samples collected from eleven aquatic water bodies in the vicinity of industrial units in Kolkata were studied for their potential to uptake Pb, Cd and Cr under field conditions. Cd and Cr concentrations in the sediments were higher than background values considered to be toxic.Alternanthera philoxeroides and Eichhornia crassipes were the two invasive species present, with the former being more widely distributed. Among native plants, Ipomoea aquatica was the most abundant. Metal uptake in the plants differed among species, tissues and sites. Pb and Cd accumulation in root tissues for all plants in most sites suggested an exclusion strategy for metal tolerance. Since I. aquatica is widely consumed in many parts of SE Asia, its metal content should be checked before use since it was found to efficiently translocate both Pb and Cd from roots to shoots.The potential of A. philoxeroides as a metal excluder needs to be explored further since it translocates less to its shoots as compared to E. crassipes and I. aquatica.

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“…Several studies have investigated growth responses, metal transportability and accumulation and phytoremoval capability in Amaranthus spp. including Amaranthus hybridus, Amaranthus tricolor, Amaranthus retroflexus, Amaranthus spinosus, Amaranthus dubius, Amaranthus panuiculatus were reported earlier [20][21][22][23][24][25]. Research into amaranth responses to Cd have been performed on Amaranthus mangostanus, which was used to identify high-Cd and low-Cd cultivars among 23 amaranth cultivars from different ecological regions of China [26].…”

Section: Introductionmentioning

confidence: 99%

Morphological Responses and Gene Expression of Grain Amaranth (Amaranthus spp.) Growing under Cd

Lancíková

Tomka

Žiarovská

et al. 2020

Plants

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Phytoremediation efficiency depends on the ability of plants to accumulate, translocate and resist high levels of metals without symptoms of toxicity. This study was conducted to evaluate the potential of grain amaranth for remediation of soils contaminated with Cd. Three grain amaranth varieties, “Pribina” (A. cruentus), “Zobor” (A. hypochondriacus x A. hybridus) and Plainsman (A. hypochondriacus x A. hybridus) were tested under different level of Cd (0, 5, 10 and 15 mg/L) in a hydroponic experimental treatment. All could be classified as Cd excluders or Cd-hypertolerant varieties able to grow and accumulate significant amounts of Cd from the hydroponic solution, preferentially in the roots. Under the highest level of Cd exposure, qRT-PCR expression analysis of five stress-related genes was examined in above- and below-ground biomass. The results show that the Cd concentration significantly increased the mRNA level of chitinase 5 (Chit 5) in amaranth roots as the primary site of metal stress. The involvement of phytochelatin synthase (PCS1) in Cd detoxification is suggested. Based on our findings, we can conclude that variety “Pribina” is the most Cd-tolerant among three tested and can be expected to be used in the phytomanagement of Cd loaded soils as an effective phytostabiliser.

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The Assessment of Phytoremediation Potential of Invasive Weed Amaranthus spinosus L.

Cited by 64 publications

References 14 publications

Gomphrena claussenii, a novel metal‐hypertolerant bioindicator species, sequesters cadmium, but not zinc, in vacuolar oxalate crystals

Gomphrena claussenii, a novel metal‐hypertolerant bioindicator species, sequesters cadmium, but not zinc, in vacuolar oxalate crystals

Heavy Metal Accumulation Potential of Some Wetland Plants Growing Naturally in the City of Kolkata, India

Morphological Responses and Gene Expression of Grain Amaranth (Amaranthus spp.) Growing under Cd

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