Growth Responses, Metal Accumulation and Phytoremoval Capability in Amaranthus Plants Exposed to Nickel Under Hydroponics

Iori, Valentina; Pietrini, Fabrizio; Cheremisina, Alexandra; Shevyakova, N. I.; Radyukina, N. L.; Кузнецов, В. В.; Zacchini, Massimo

doi:10.1007/s11270-013-1450-3

Cited by 32 publications

(19 citation statements)

References 45 publications

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“…It is obvious that dry mass of plant organs decreased with increasing Ni concentration in external solution. Our results are consistent with earlier studies of various crops which have shown that higher levels of trace elements, including Ni, cause a significant reduction in dry mass and essential metabolites [20][21][22][23]. Figure 1 also shows some considerable differences between studied cultivars.…”

Section: Resultssupporting

confidence: 92%

Physiological response of two brassica napus l. cultivars to nickel treatment

Peško

Kráľová

2014

Ecological Chemistry and Engineering S

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PHYSIOLOGICAL RESPONSE OF TWO Brassica napus L. CULTIVARS TO NICKEL TREATMENT WPŁYW NIKLU NA REAKCJE FIZJOLOGICZNE DWÓCH ODMIAN Brassica napus L.Abstract: Adverse effect of nickel on hydroponically cultivated plants of two Brasssica napus L. cultivars (Verona and Viking) was investigated. Dry mass of shoots and roots as well as some biochemical characteristics (concentration of photosynthetic pigments, TBARS and proteins) of plant leaves were determined. In addition, the content of nickel in plant organs was estimated. Visible symptoms of Ni toxicity were notable already at the lowest applied concentration (6 µmol · dm -3). Higher applied Ni concentrations (24, 60 and 120 µmol · dm -3 ) resulted in moderate to strong toxic effects on plants of both studied cultivars. After application of 6 and 12 µmol · dm -3 Ni shoot dry mass of cv. Viking was substantial lower than that of cv. Verona. Decrease of root dry mass after treatment with 6, 12 and 120 µmol · dm -3 Ni was similar for both cultivars. Strong decrease in content of photosynthetic pigments was observed after application of 120 µmol · dm . Comparing to the control, the content of these pigments in leaves of plants dropped under 50% (both cultivars). The highest applied Ni concentration 120 µmol · dm -3 caused that protein content in leaves dropped by 39% (cv. Verona) and 37% (cv. Viking) comparing to the control plants. After application of 120 µmol · dm -3 Ni the content of malondialdehyde in leaves was 2.64-(Viking) and 2.31-(Verona) times higher than that of control. Nickel amounts accumulated in roots of plants were higher than those in shoots. Accumulated Ni amounts in roots of cv. Verona plants were 1.3-(120 µmol · dm -3 ) to 1.9-(6 µmol · dm -3 ) times lower than those of cv. Viking plants, whereas metal amounts accumulated in shoots of cv. Verona plants were 1.2-(120 µmol · dm -3 ) to 1.8-(6 µmol · dm -3 ) times lower than those of cv. Viking plants.

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Section: Resultssupporting

confidence: 92%

Physiological response of two brassica napus l. cultivars to nickel treatment

Peško

Kráľová

2014

Ecological Chemistry and Engineering S

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“…Although no differences between the two clones were observed upon metal treatment, Cd exposure caused a decrease in RMR, which was around 65% compared to the control, and a slight increase in SMR and LMR. Consistent with this data, a reduction of the RMR in plants treated with metals was previously reported by Vassilev et al (1998) for Cd and by Iori et al (2013) for Ni, as the result of their toxicity effect on plant growth. Root growth is considered a useful parameter for metal tolerance tests, as the root apparatus is the first plant organ in close contact with the metal and it is the primary site of metal toxic action (Lux et al 2004).…”

Section: Resultssupporting

confidence: 90%

“…The metal uptake ratio describes the capability of the plant to extract and accumulate Cd and it was calculated as the ratio of the Cd content in the whole plant to the Cd content of the corresponding growth solution (Iori et al 2013).…”

Section: Cadmium Content Analysismentioning

confidence: 99%

“…Among the physiological processes associated with heavy metal tolerance in plants, the restriction of metal transport to the aerial parts has been highlighted in non hyperaccumulating plants (Lux et al 2004, Gomes et al 2012, Iori et al 2013. In fact, in leaves, Cd represents a very toxic agent, as it severely interferes with the photosynthetic processes (Pietrini et al 2005).…”

Section: Iforest -Biogeosciences and Forestrymentioning

confidence: 99%

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Analysis of biometric, physiological, and biochemical traits to evaluate the cadmium phytoremediation ability of eucalypt plants under hydroponics

Iori¹,

Pietrini²,

Bianconi³

et al. 2017

iForest

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(1) Wastewater reclamation and reuse represent a feasible solution to meet the growing demand for safe water. An environmentally sustainable technology such as phytoremediation is targeted for the reclamation of polluted waters. To this end, the capability of different plant species to tolerate and accumulate pollutants has to be investigated. In this work, eucalypt plants were studied by analysing biometric, physiological, and biochemical parameters related to cadmium (Cd) tolerance and accumulation in two clones ("Velino ex 7" and "Viglio ex 358") of Eucalyptus camaldulensis Dehnh. × E. globulus subsp. bicostata (Maiden, Blakely & J.Simm.) J.B. Kirkp exposed to 50 μM CdSO4 under hydroponics for three weeks. The results indicated that both eucalypt clones have a valuable tolerance to cadmium, expressed as the tolerance index (Ti). Biometric investigations showed that, regardless of the clone, the metal exposure affected most parameters related to biomass allocation and leaf growth. On the contrary, significant differences were found between the clones with respect to the chlorophyll content and the Chl a to Chl b ratio. These findings were also confirmed from the analysis of chlorophyll fluorescence transient (OJIP) using the JIP test. Cadmium accumulation occurred in both clones and in particular in the roots, with a poor amount of metal reaching the aerial parts, and the Velino clone showed the highest Cd accumulation. The metal uptake ratio and the phytoextraction efficiency highlight a good Cd phytoremoval ability, especially for the Velino clone. The results are discussed taking into account that, in wastewater phytoremediation systems, root biomass can be completely harvested allowing for the removal of the absorbed metal. Finally, the notable tolerance to submersion and the large environmental adaptability of eucalypt suggest that this plant species represents an interesting candidate for the phytoremediation of Cd-polluted wastewaters.

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“…Nitrification and denitrification was well established with total nitrogen reduction of 72 %, phosphorus by 47 % and COD by 90 % in the process. Recently, Iori et al (2013) evaluated the morphophysiological responses, such as biomass production and partitioning, nickel accumulation in plants and nickel removal ability by growing 3-week-old Amaranthus paniculatus L. plants, subjected to nickel chloride concentrations of 0 (control), 25, 50, 100 and 150 lM, in hydroponic solution for 1 week and observed almost 60 % Ni removal efficiency showing no stress symptoms by the plants.…”

Section: Ex Situ Bioremediationmentioning

confidence: 99%

Biotechnological advances in bioremediation of heavy metals contaminated ecosystems: an overview with special reference to phytoremediation

Mani

Kumar

2013

Int. J. Environ. Sci. Technol.

513

137

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The ability of heavy metals bioaccumulation to cause toxicity in biological systems-human, animals, microorganisms and plants-is an important issue for environmental health and safety. Recent biotechnological approaches for bioremediation include biomineralization (mineral synthesis by living organisms or biomaterials), biosorption (dead microbial and renewable agricultural biomass), phytostabilization (immobilization in plant roots), hyperaccumulation (exceptional metal concentration in plant shoots), dendroremediation (growing trees in polluted soils), biostimulation (stimulating living microbial population), rhizoremediation (plant and microbe), mycoremediation (stimulating living fungi/mycelial ultrafiltration), cyanoremediation (stimulating algal mass for remediation) and genoremediation (stimulating gene for remediation process). The adequate restoration of the environment requires cooperation, integration and assimilation of such biotechnological advances along with traditional and ethical wisdom to unravel the mystery of nature in the emerging field of bioremediation. This review highlights better understanding of the problems associated with the toxicity of heavy metals to the contaminated ecosystems and their viable, sustainable and eco-friendly bioremediation technologies, especially the mechanisms of phytoremediation of heavy metals along with some case studies in India and abroad. However, the challenges (biosafety assessment and genetic pollution) involved in adopting the new initiatives for cleaning-up the heavy metals-contaminated ecosystems from both ecological and greener point of view must not be ignored.

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Growth Responses, Metal Accumulation and Phytoremoval Capability in Amaranthus Plants Exposed to Nickel Under Hydroponics

Cited by 32 publications

References 45 publications

Physiological response of two brassica napus l. cultivars to nickel treatment

Physiological response of two brassica napus l. cultivars to nickel treatment

Analysis of biometric, physiological, and biochemical traits to evaluate the cadmium phytoremediation ability of eucalypt plants under hydroponics

Biotechnological advances in bioremediation of heavy metals contaminated ecosystems: an overview with special reference to phytoremediation

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