Biochemical dissection of diageotropica and Never ripe tomato mutants to Cd-stressful conditions

Gratão, Priscila Lupino; Monteiro, Carolina Cristina; Carvalho, Rogério Falleiros; Tezotto, Tiago; Piotto, Fernando Ângelo; Peres, Lázaro Eustáquio Pereira; Azevedo, Ricardo Antunes

doi:10.1016/j.plaphy.2012.04.009

Cited by 161 publications

(92 citation statements)

References 95 publications

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“…The contamination of the environment is a major global problem that has been widely reported, and different types of contaminants predominate in different parts of the world, with some causing more damage than others (Gratão et al, 2005;Garcia et al, 2006;Ghelfi et al, 2011;Monteiro et al, 2011;Gratão et al, 2012). There is a wide range of pollutants, and it is unsurprising that due to their nature, specifically their chemical makeup, different strategies must be used to remediate a contaminated area.…”

Section: Introductionmentioning

confidence: 99%

Use of non-hyperaccumulator plant species for the phytoextraction of heavy metals using chelating agents

Souza

Piotto²,

Nogueirol³

et al. 2013

Sci. agric. (Piracicaba, Braz.)

101

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Soil contamination by heavy metals is a challenge faced by many countries, and engineering technologies to solve this problem are expensive and can cause negative impacts on the environment. One way to minimise the levels of heavy metals in the soil is to use plants that can absorb and accumulate heavy metals into harvestable parts, a process called phytoextraction. Typical plant species used in research involving phytoextraction are heavy metal hyperaccumulators, but plants from this group are not good biomass producers and grow more slowly than most species; thus, they have an important role in helping scientists understand the mechanisms involved in accumulating high amounts of heavy metals without developing symptoms or dying. However, because of their slow growth, it is not practical to use these species for phytoextraction. An alternative approach is to use non-hyperaccumulator plants assisted by chelating agents, which may improve the ability of plants to accumulate more heavy metals than they would naturally. Chelating agents can be synthetic or organic acids, and the advantages and disadvantages of their use in improving the phytoextraction potential of non-hyperaccumulator plants are discussed in this article. We hope to draw attention to ways to improve the phytoextraction potential of non-hyperaccumulator plants that produce a large amount of biomass and to stimulate more research on phytoextraction-inducing substances.

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Section: Introductionmentioning

confidence: 99%

Use of non-hyperaccumulator plant species for the phytoextraction of heavy metals using chelating agents

Souza

Piotto²,

Nogueirol³

et al. 2013

Sci. agric. (Piracicaba, Braz.)

101

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“…The issue of environmental pollution is a global problem which has drawn a major concern since the recent past. Just as different contaminants predominates at different areas so will unique methods of management and control be employed based on what is obtainable in such areas [2].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Plants at Petroleum Contaminated Site for Phytoremediation

Anyasi¹,

Atagana²

2017

International Conference of Recent Trends in Environmental Science and Engineering

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-The study is aimed at identifying native plants growing around petroleum hydrocarbon contaminated site in Umuahia, Nigeria that has the ability to phytoremediate the contaminant from the soil. A total of 28 native plants in the area were sampled. Most of the plants demonstrated the ability to grow in a high concentration of the total petroleum hydrocarbon which is an indication that they can be used for phytoremediation of a petroleum hydrocarbon contaminated soil. Chromolaena odorata, Aspilla africana, Chloris babata, Pasparlum vaginatum, Bryophylum pinnatum, Paspalum scrobiculatum, Spondias mombim, Euragrostis atrovilens, Cyperus rotundus, Uvaria chamae all demonstrated phytoremediation characteristics in the contaminated site. Among those characteristics was the ability to survive the toxic nature of the contamination and to uptake part of the contamination. Pearson correlation demonstrated a significant and positive relations (r = 0.64, p = 0.003) (p ˂ 0.05) between the soil and root TPH. Using bioaccumulation factor as a module for phytoremediation resulted in Linear regression between TPH concentration in the soil and root tissue of Y = 1.8696x + 608.55. From this study, chromolaena odorata, Aspilla Africana and Uvaria chamae were selected as candidate plants for phytoremediation of PAHs.

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“…Among heavy metals, Cd represents one of the most damaging metals to plants. At high concentrations, this heavy metal can generate reactive oxygen species (ROS) such as superoxide radicals (O 2 -), singlet oxygen ( 1 O 2 ), hydrogen peroxide (H 2 O 2 ) and hydroxyl radicals (OH -), which can disrupt the plant defense system (Gratão et al 2012;Gratão et al 2015). Shen et al (2011) demonstrated that the overexpression of BnHO-1, which is involved in the biosynthesis of heme oxygenase (HO), a key enzyme in the biosynthesis of the chromophore, provided tolerance to mercury (Hg) in Brassica napus, indicating that phytochromes are involved in metal-induced signaling pathways.…”

Section: Introductionmentioning

confidence: 99%