Comparative analysis of metal translocation in red maple (<i>Acer rubrum</i>) and trembling aspen (<i>Populus tremuloides</i>) populations from stressed ecosystems contaminated with metals

Kalubi, K. N.; Mehes-Smith, M.; Omri, Abdelwahab

doi:10.1080/02757540.2016.1142978

Cited by 33 publications

(21 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Conversely, some elements, such as arsenic and cadmium, were not detected at all in leaves or flowers. Studies have shown plants to have physical root barriers, mycorrhizal symbionts, and cellular mechanisms that aid in restricting metal entry into roots [30,67,68]. Arsenic is unique and will undergo volatilization (forming gaseous compounds) from leaf surfaces and lost to the atmosphere [69,70].…”

Section: Discussionmentioning

confidence: 99%

Soil Metals and Ectomycorrhizal Fungi Associated with American Chestnut Hybrids as Reclamation Trees on Formerly Coal Mined Land

Bauman

Adamson

Brisbin

et al. 2017

International Journal of Agronomy

View full text Add to dashboard Cite

Hybrid chestnut (Castanea dentata × C. mollissima) has the potential to provide a valuable agroforestry crop on formerly coal mined landscapes. However, the soil interactions of mycorrhizal fungi and buried metals associated with mining are not known. This study examined soil, plant tissue, and ectomycorrhizal (ECM) root colonization on eight-year-old hybrid (BC 1 F 3 and BC 2 F 3 ) and American chestnuts on a reclaimed coal mine in Ohio, USA. Chestnut trees were measured and ECM colonization on roots was quantified. Leaves, flowers, and soil were analyzed for heavy metals. Differences were not detected among tree types regarding metal accumulation in plant tissue or ECM colonization. BC 2 F 3 hybrids had greater survival and less cankers than American chestnuts ( = 0.006 and <0.0001). Taller trees were associated with greater ECM root colonization and correlated with an increase in Al uptake ( = 0.02 and 0.01). When comparing tissue, manganese and aluminum were in higher concentrations in leaves than flowers, where copper and selenium were significantly higher in floral tissue ( < 0.05). All trees were flowering at this time meriting further examination in nut tissue. Block effects for selenium and zinc indicate the variability in reclaimed soils requiring further monitoring for possible elemental transfer to nut and wood tissue.

show abstract

Section: Discussionmentioning

confidence: 99%

Soil Metals and Ectomycorrhizal Fungi Associated with American Chestnut Hybrids as Reclamation Trees on Formerly Coal Mined Land

Bauman

Adamson

Brisbin

et al. 2017

International Journal of Agronomy

View full text Add to dashboard Cite

show abstract

“…Plants are known to have physical root barriers, mycorrhizal symbionts, and cellular mechanisms that aid in restricting metal entry into root cells and excluding elements from active metabolic locations (Bauman et al, 2012;Kalubi et al, 2016;Tosic et al, 2016). Another metal indicative of coal spoil is Se, which was detected in the highest accumulation within floral tissue.…”

Section: Discussionmentioning

confidence: 99%

“…2005). Changes in soil pH and organic matter contents, as well as interactions with other elements and substances in water, may drive the system for future plant availability (Fritioff and Greger, 2003;Tangahu et al, 2011;Kalubi et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

Metals in Soil and American Chestnut Tissue in Experimental Soil Treatments Plots on a Coal Mine Reclaimed Site

Bauman¹,

Brisbin²,

Gilland³

et al. 2016

ASMR

View full text Add to dashboard Cite

Abstract:The Appalachian Regional Reforestation Initiative outlines planting methods that include preparation of a deep-rooting zone for healthy tree establishment (> 1.3 m deep). Continued monitoring may show that soil-ripping has pronounced effects in later years. However, little is known about the interactions of reclamation methods, buried metals, and micronutrients in soils on reclaimed coal mined sites. This study examined soil samples and plant tissue in eight-year-old pure American (Castanea dentata) and hybrid chestnuts BC1F3, and BC2F3 (C. dentata × C. mollissima) on a reclaimed coal mine site located in Dresden, Ohio under various treatments: 1) untreated control plots, 2) plots plowed and disked to 30 cm depth, 3) plots deep-ripped to 1 m depth, and 4) a combination of ripped and plowed/disked. Soil samples were collected in triplicate from all four treatments (n=3). Leaves were collected from a randomly selected subset of 108 trees (n=9). Flowers were collected from this subset (22 individuals), representing all treatments. Soil, leaves, and floral tissue were analyzed for silver (Ag), aluminum (Al), arsenic (As), cadmium (Cd), copper (Cu), manganese (Mn), lead (Pb), selenium (Se), and zinc (Zn) using inductively coupled plasma-mass spectrometry. No differences were detected when metal concentrations in soil, foliage, and floral tissue were compared among soil preparation treatments and chestnut tree types. Soil concentrations of Cu, Mn, and Se were detected at higher levels than county averages. Differences were noted when metal concentrations in soil were compared to chestnut leaves and chestnut floral tissue (P < 0.05). Elements including As and Cd were detected in soils but not found in tree tissue, indicating no potential transfer into the food chain. However, Se and Cu concentrations in chestnut floral tissue were significantly higher when compared to foliage (P = 0.004 and < 0.0001), which merits monitoring focused on metal concentrations in developing chestnut seeds.

show abstract

“…The translocation of nickel from roots to aerial parts is also very small. This species can be therefore classified as a nickel avoider (Kalubi, Mehes-Smith, & Omri, 2016;Kalubi et al, 2015). A. sacharinium, a close relative of A. rubrum, stores Ni in its roots with limited translocation to other plant parts.…”

Section: Introductionmentioning

confidence: 99%

Differential levels of gene expression and molecular mechanisms between red maple (Acer rubrum) genotypes resistant and susceptible to nickel toxicity revealed by transcriptome analysis

Nkongolo

Theriault

Paul

2018

Ecology and Evolution

View full text Add to dashboard Cite

Knowledge of regulation of genes associated with metal resistance in higher plants is very limited. Many plant species have developed different genetic mechanisms and metabolic pathways to cope with metal toxicity. The main objectives of this study were to 1) assess gene expression dynamics of A. rubrum in response to nickel (Ni) stress and 2) describe gene function based on ontology. Certified A. rubrum genotypes were treated with 1,600 mg of Ni per 1 Kg of soil corresponding to a soil total nickel content in a metal‐contaminated region in Ontario, Canada. Nickel resistant and susceptible genotypes were selected and used for transcriptome analysis. Overall, 223,610,443 bases were generated. Trinity reads were assembled to trinity transcripts. The transcripts were mapped to protein sequences and after quality controls and appropriate trimmings, 66,783 annotated transcripts were selected as expressed among the libraries. The study reveals that nickel treatment at a high dose of 1,600 mg/kg triggers regulation of several genes. When nickel‐resistant genotypes were compared to water controls, 6,263 genes were upregulated and 3,142 were downregulated. These values were 3,308 and 2,176, respectively, when susceptible genotypes were compared to water control. The coping mechanism of A. rubrum to Ni toxicity was elucidated. Upregulation of genes associated with transport in cytosol was prevalent in resistant genotypes compared to controls while upregulation of genes associated with translation in the ribosome was higher in susceptible genotypes when compared to water. The analysis revealed no major gene associated with Ni resistance in A. rubrum. Overall, the results of this study suggest that the genetic mechanism controlling the resistance of this species to nickel is controlled by genes with limited expression. The subtle differences between resistant and susceptible genotypes in gene regulation were detected using water‐treated genotypes as references.

show abstract

Comparative analysis of metal translocation in red maple (Acer rubrum) and trembling aspen (Populus tremuloides) populations from stressed ecosystems contaminated with metals

Cited by 33 publications

References 30 publications

Soil Metals and Ectomycorrhizal Fungi Associated with American Chestnut Hybrids as Reclamation Trees on Formerly Coal Mined Land

Soil Metals and Ectomycorrhizal Fungi Associated with American Chestnut Hybrids as Reclamation Trees on Formerly Coal Mined Land

Metals in Soil and American Chestnut Tissue in Experimental Soil Treatments Plots on a Coal Mine Reclaimed Site

Differential levels of gene expression and molecular mechanisms between red maple (Acer rubrum) genotypes resistant and susceptible to nickel toxicity revealed by transcriptome analysis

Contact Info

Product

Resources

About