Analysis of genetic and epigenetic effects of maize seeds in response to heavy metal (Zn) stress

Erturk, Fılız Aygun; Ağar, Güleray; Arslan, Esra; Nardemir, Gokce

doi:10.1007/s11356-014-3886-4

Cited by 45 publications

(25 citation statements)

References 39 publications

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“…Moreover, several studies highlight various physiochemical and biological properties of HS to explain their significance in soil fertility ( Hirel et al, 2007 ; Brown et al, 2014 ). However, considerable gaps still exist in our understanding of how HS induce signaling in plants that allows them to cope with heavy metal genotoxicity ( Yigider et al, 2016 ), epigenetic modifications ( Erturk et al, 2015 ), and building rhizospheres and microbial interactions ( Gao et al, 2015 ). Moreover, the unique molecular structure of HS and their relative response to antioxidant, drought, and salt stresses has been reported to explain the biological effect of HS on plants ( Canellas and Olivares, 2014 ); one such mechanism involves binding of HS with inorganic trace mineral elements that can then be utilized by various crop plants to trigger potential molecular processes.…”

Section: Introductionmentioning

confidence: 99%

“…Humic substances mitigate the effects of surplus heavy metals that can trigger genotoxicity and genetic instability. Although heavy metals play a vital role as essential micronutrients in several physiological processes of plants (i.e., respiration, photosynthesis, and protein synthesis) by modulating the biological mechanisms of various proteins and enzymes ( Erturk et al, 2015 ), they can nonetheless cause toxicity under extremely high concentrations ( Nardi et al, 2007 ; Aguirre et al, 2009 ). Recent reports have shown various toxic effects of heavy metals on several plant metabolic processes.…”

Section: Introductionmentioning

confidence: 99%

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Humic Substances: Determining Potential Molecular Regulatory Processes in Plants

et al. 2018

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Humic substances (HSs) have considerable effects on soil fertility and crop productivity owing to their unique physiochemical and biochemical properties, and play a vital role in establishing biotic and abiotic interactions within the plant rhizosphere. A comprehensive understanding of the mode of action and tissue distribution of HS is, however, required, as this knowledge could be useful for devising advanced rhizospheric management practices. These substances trigger various molecular processes in plant cells, and can strengthen the plant’s tolerance to various kinds of abiotic stresses. HS manifest their effects in cells through genetic, post-transcriptional, and post-translational modifications of signaling entities that trigger different molecular, biochemical, and physiological processes. Understanding of such fundamental mechanisms will provide a better perspective for defining the cues and signaling crosstalk of HS that mediate various metabolic and hormonal networks operating in plant systems. Various regulatory activities and distribution strategies of HS have been discussed in this review.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Humic Substances: Determining Potential Molecular Regulatory Processes in Plants

et al. 2018

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“…Therefore, treating seeds with Zn reduces the length of maize seedling roots, especially when the source is ZnSO 4 at doses greater than 0.5 Zn per kg −1 of seed. Excess levels of Zn following application of ZnSO 4 to maize seeds can promote hormonal changes in seedlings, with decreases in concentrations of gibberellic acid, zeatin, and indole acetic acid, and increase in concentrations of abscisic acid (Erturk et al 2015), which compromises metabolic activities, such as cell division.…”

Section: Resultsmentioning

confidence: 99%

Relation of Toxicity in Corn Seeds Treated with Zinc and Salicylic Acid

Santos

Morais

Prado

et al. 2017

Communications in Soil Science and Plant Analysis

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The beneficial effect of corn seed treatment with zinc (Zn) is directly related to the source used. The excess of this micronutrient causes seedling stress and reduces growth. Thus, assuming that the use of exogenous phytohormones can minimize such effects, we evaluated different doses and sources of Zn for the treatment of maize seeds with or without salicylic acid. The experiment took place in the laboratory, and two factorial experiments, 2 × 4 + 1, were performed in a randomized design. The seeds were treated with either ZnO or ZnSO 4 at doses of 0.5, 1, 2, and 3 g.kg −1 seed with four replications, differing only by the addition of 4.14 mg L −1 salicylic acid. Treating seeds with Zn and salicylic acid did not affect germination. ZnO led to a greater increase in dry mass in corn seedlings as compared with zinc sulfate, especially at higher doses (2 and 3 g kg −1 seed). Seed treatment with sulfate reduces root and shoot length, and salicylic acid did not attenuate this toxic effect. Dry mass is not affected when oxide is used. Salicylic acid reduces the accumulation of zinc in the treatment of corn seeds, regardless of the source used. ARTICLE HISTORY

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“…In some cases, the stress lowers methylation -such as stress by drought in Lolium perenne and cold in Cicer arietinum L. Rakei et al, 2016). While in other cases, the stress increases the levels of cytosine methylation -such as stress by salinity in Jatropha curcas L., water in pea (Pisum sativum L.), and heavy metal in maize (Zea mays L.) (Labra et al, 2002;Mastan et al, 2012;Erturk et al, 2015). The study also indicates that replanting disease had an impact on genomic methylation alterations in R. glutinosa.…”

Section: Discussionmentioning

confidence: 99%

DNA Methylation in Rehmannia glutinosa Roots Suffering from Replanting Disease

Yang¹,

Li²

2015

IJAB

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Abstract"Replanting disease" is a serious constraint to root growth in the medicinal species Rehmannia glutinosa (Gaertn.) Libosch. ex Fisch. and C.A. Mey. The syndrome involves an array of morphological, physiological and biochemical changes to the plant, which culminates in a major loss in tuberous root growth. Here, the tendency of replanting disease to induce differential cytosine methylation in the root DNA was explored via the methylation-sensitive amplified polymorphism (MSAP) method. Exposure to the disease measurably altered the global methylation level. Of the 231 differentially methylated MSAP fragments identified, 136 involved replanting disease-induced methylation and 95 demethylation. A set of 31 differentially methylated fragments was isolated and sequenced. The sequences were used to analyze the function of the genes involved and to investigate whether any were differentially transcribed as a result of exposure to replanting disease. Of the eight genes subjected to transcription profiling, the three which were demethylated in the diseased roots were transcribed more abundantly in these roots, and the five which were methylated were down-regulated by a real-time quantitative PCR (qPCR) method. Our study gives an insight into the DNA methylation of R. glutinosa subjected to replanting disease and provides valuable information for further exploring epigenetic regulation of responses to the disease in the species and other plants.

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Analysis of genetic and epigenetic effects of maize seeds in response to heavy metal (Zn) stress

Cited by 45 publications

References 39 publications

Humic Substances: Determining Potential Molecular Regulatory Processes in Plants

Humic Substances: Determining Potential Molecular Regulatory Processes in Plants

Relation of Toxicity in Corn Seeds Treated with Zinc and Salicylic Acid

DNA Methylation in Rehmannia glutinosa Roots Suffering from Replanting Disease

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