Cell division in Lemna minor roots treated with lead

Samardakiewicz, Sławomir; Woźny, Adam

doi:10.1016/j.aquabot.2005.06.007

Cited by 41 publications

(19 citation statements)

References 21 publications

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“…It was demonstrated that Pb caused inhibition of cell division in Lemna minor roots (Samardakiewicz and Wozny, 2005). In several plant species, including Triticum aestivum (Dey et al, 2007; Kaur et al, 2013), Z. mays L. (Kozhevnikova et al, 2009), Pisum sativum (Malecka et al, 2009), and Sedum alfredii (Gupta et al, 2010), a decrease in the length and in root dry mass under Pb toxicity have been reported (Munzuroglu and Geckil, 2002).…”

Section: Effect Of Lead On Root Development and Physiologymentioning

confidence: 99%

Effect of lead on root growth

et al. 2013

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Lead (Pb) is one of the most widespread heavy metal contaminant in soils. It is highly toxic to living organisms. Pb has no biological function but can cause morphological, physiological, and biochemical dysfunctions in plants. Plants have developed a wide range of tolerance mechanisms that are activated in response to Pb exposure. Pb affects plants primarily through their root systems. Plant roots rapidly respond either (i) by the synthesis and deposition of callose, creating a barrier that stops Pb entering (ii) through the uptake of large amounts of Pb and its sequestration in the vacuole accompanied by changes in root growth and branching pattern or (iii) by its translocation to the aboveground parts of plant in the case of hyperaccumulators plants. Here we review the interactions of roots with the presence of Pb in the rhizosphere and the effect of Pb on the physiological and biochemical mechanisms of root development.

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Section: Effect Of Lead On Root Development and Physiologymentioning

confidence: 99%

Effect of lead on root growth

et al. 2013

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“…Therefore, we suggest that seed coat of C. gladiata played a crucial role conferring tolerance to excessive Pb concentrations during the critical stage of germination process once no effects of Pb were observed in seedlings establishment after germination. Plants continue to grow in the Pb-contaminated soil and roots, normally, are the first organs in direct contact with the metal, for this reason this direct contact may be responsible for the plant growth reductions (Delhaize and Ryan 1995;Guo et al 2004;Iannacone and Alvariño 2005) and disturbs on several cellular processes, mainly during cell division (Samardakiewicz and Wozny 2005;Kozhevnikova et al 2009). However, the absence of root growth reduction in Pb-treated C. gladiata may be an indicative of Pb tolerance of this species.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Mycorrhizal Influence on the Development and Phytoremediation Potential ofCanavalia Gladiatain Pb-Contaminated Soils

Souza

Andrade

Souza

et al. 2013

International Journal of Phytoremediation

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Soil contamination by heavy metals is a serious problem to humans due to its high level of toxicity. The heavy metal lead (Pb) is commonly used in industries and if the disposal of residues that contain this element is not done properly may result in tragic consequences to the organisms. In this experiment we assessed the potential of a forrage leguminous, Canavalia gladiata, to phytoremediate lead-contaminated soil under mycorrhizal influence. The experimental design was composed of 4 Pb doses (0, 250, 500, and 1000 mg kg(-1) of soil) and the plants were inoculated or uninoculated with arbuscular mycorrhizal fungi (AMF). We observed that the nodulation was severely affected by the presence of Pb independently of the mycorrhizal status; most of the elements analyzed were affected independently of the mycorrhizal status with exception of P. The mycorrhizal colonization was able to restrict the entrance of Pb in plants under high concentrations of Pb but promoted it's accumulation in both organs under intermediate concentrations of this element. Besides the mycorrhization did not promote plant growth under Pb stress, the use of this plant may be considered to be used for phytostabilization purposes.

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“…Some research has determined that contamination with Pb reduces MI activity and causes mitosis abnormalities such as C-mitosis, chromosomal stickiness, anaphase, and telophase bridges involving one or more chromosome micronuclei and fragments in plant species [6,9]. The inhibition of mitotic activity and production of several aberrations caused by Pb treatment have been explained as being the effect of the treatment on DNA synthesis and its action as an enzymatic inhibitor of the enzyme system required for the chain reaction of DNA synthesis.…”

Section: Discussionmentioning

confidence: 99%

“…When the soil is lead-contaminated, plants take up lead via their root systems [4]. Pb is known as one of the nonessential metals for plants, and there are a number of reports on its toxic effects such as decreasing on germination rate, growth, and dry mass of roots and shoots [5] reduction in cell division [6], and inhibition of photosynthetic activity besides its genotoxic [3] and epigenetic effects [7,8]. The genotoxic effect of Pb on plants has been shown by using various genotoxic tests such as comet, micronucleus, or chromosome aberration assays in several studies [6,9].…”

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confidence: 99%

Effects of Lead Sulfate on Genetic and Epigenetic Changes, and Endogenous Hormone Levels in Corn (Zea mays L.)

Ağar

Erturk

Arslan

et al. 2014

Pol. J. Environ. Stud.

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Heavy metal contamination is considered one of the most important problems for the environment and human health because heavy metals are pollutants that cannot be degraded to nontoxic forms [1]. Among the toxic metal contaminants, lead (Pb) pollution can occur from mining and smelting activities, Pb-containing paints, gasoline, and explosives, as well as from the disposal of municipal sewage sludges enriched with Pb [2,3]. When the soil is lead-contaminated, plants take up lead via their root systems [4]. Pb is known as one of the nonessential metals for plants, and there are a number of reports on its toxic effects such as decreasing on germination rate, growth, and dry mass of roots and shoots [5] reduction in cell division [6], and inhibition of photosynthetic activity besides its genotoxic [3] and epigenetic effects [7,8]. The genotoxic effect of Pb on plants has been shown by using various genotoxic tests such as comet, micronucleus, or chromosome aberration assays in several studies [6,9]. However, little is known about the effects of lead on DNA methylation changes in plants. Few papers have shown that DNA hyper-Pol. AbstractIn this research we aimed to evaluate DNA damage levels, DNA methylation, and protein and pytohormone level changes in corn seedlings (Zea mays L.) exposed to 5, 10, 20, and 40 mM concentrations of lead sulfate solution (PbSO 4 ). The results showed that all concentrations of the test material caused a decreasing mitotic index, genomic template stability (GTS), and soluble protein levels, but increased RAPDs profile changes (DNA damage) and DNA hypermethylation. Moreover, in the HPLC (high-pressure liquid chromatography) analyses, it was also observed that Pb contamination caused a decrease in the growth-promoting hormones including gibberellic acid (GA), zeatin (ZA), and indole acetic acid (IAA) levels, in contrast to increasing the absisic acid (ABA) level. The results of this experiment have clearly shown that Pb has a significant impact on the epigenetic mechanisms as well as its genotoxic effects. Some of phytohormone decreases (GA, ZA and IAA) and especially increasing ABA levels under Pb stress may be a part of the defense system against stress.

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Cell division in Lemna minor roots treated with lead

Cited by 41 publications

References 21 publications

Effect of lead on root growth

Effect of lead on root growth

Evaluation of Mycorrhizal Influence on the Development and Phytoremediation Potential ofCanavalia Gladiatain Pb-Contaminated Soils

Effects of Lead Sulfate on Genetic and Epigenetic Changes, and Endogenous Hormone Levels in Corn (Zea mays L.)

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