The response of Populus spp. to cadmium stress: Chemical, morphological and proteomics study

Marmiroli, Marta; Imperiale, Davide; Maestri, Elena; Marmiroli, Nelson

doi:10.1016/j.chemosphere.2013.07.065

Cited by 56 publications

(24 citation statements)

References 36 publications

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“…They all noted that the obvious restriction of growth occurred in the fresh and dry weight of roots and aerial parts of stressed plants. Marmiroli et al (2013) that the most common response of the poplar clones to the presence of Cd was a marked reduction in main root elongation. Under these conditions, roots were the first organ in contact with the metal element appeared to be heavily affected by their toxicity (Shah et al 2011).…”

Section: Discussionmentioning

confidence: 98%

Ecophysiological responses of almond (Prunus dulcis) seedlings to cadmium stress

Elloumi¹,

Zouari

Chaâri

et al. 2014

Biologia

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Almond (Prunus dulcis L.) seedlings were exposed to 0, 25, 50, 100 and 150 µM of CdCl2 in a solution culture under controlled conditions. The effects of cadmium (Cd) exposure on almond seedlings growth, stomatal architecture, gas exchange and physiological parameters were investigated. Under cadmium stress conditions, significant decrease in fresh and dry weight, length of shoot and chlorophyll content were observed. Stomatal conductance, transpiration and net photosynthetic rates were generally depressed by Cd stress, despite stomatal frequency values and stomatal pore size remained unchanged. Exposure to Cd severely restricted the starch content and increased soluble sugars.

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Section: Discussionmentioning

confidence: 98%

Ecophysiological responses of almond (Prunus dulcis) seedlings to cadmium stress

Elloumi¹,

Zouari

Chaâri

et al. 2014

Biologia

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“…Different pieces of evidence in various plant species indicated that heavy metal stress can down-regulate proteins involved in carbon metabolism (Kieffer et al, 2008). In poplar (Populus tremula L.), 14-days Cd administration induced a general reduction of carbon metabolism enzymes abundance, including RuBisCO and RuBisCO activase (Kieffer et al, 2008;Marmiroli et al, 2013). However, it has been reported that in the heavy metal-stress tolerant species Typha angustifolia, 30-days Cd administration induced an increase of RuBisCO large (or small) subunit, of RuBisCO activase (Bah et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

Effect of short-term cadmium stress on Populus nigra L. detached leaves

Lomaglio

Rocco

Trupiano

et al. 2015

Journal of Plant Physiology

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“…Plants were then harvested and separated into roots, stems and leaves (initial cuttings were not included in any analyses). Roots were washed thoroughly with tap water and immersed in a 0.05 mM CaCl2 solution for 30 minutes to remove any surface adhering metals (Marmiroli et al, 2013), roots were rinsed with deionized water and scanned using the software WinRhizo®, to determine the root length, diameter, root tips, surface area and volume. All plant parts were dried separately in an oven at 70 o C for seven days, then dry weight (DW) was determined.…”

Section: Harvest and Phytotoxicity Assessmentmentioning

confidence: 99%

Tolerance, toxicity and transport of Cd and Zn in Populus trichocarpa

Oliveira

Tibbett

2018

Environmental and Experimental Botany

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Metal inputs to terrestrial ecosystems are of great concern due their toxicity to biota, especially for elements with no biological function such as cadmium. Fast-growing trees such as poplars may have potential in phytoremediation schemes. We assessed accumulation, metal partitioning, gene expression (Pt-HMA4) and overall tolerance to, and interaction between, cadmium (Cd) and zinc (Zn) in Populus trichocarpa 'Trichobel'. We predicted that Zn would have an antagonistic effect in Cd accumulation and anticipated some level of tolerance to these metals. Poplars were grown in sandy substrate under different metal applications, ranging from 1 to 243 mg kg-1 Cd; or 30 to 7,290 mg kg-1 Zn; and also two combined treatments: 27 mg kg-1 Cd with 90 or 270 mg kg-1 Zn. Growth parameters and metal contents in shoots and roots were determined. Transcriptional levels of the Pt-HMA4 gene were assessed in roots and leaves. P. trichocarpa showed a surprisingly high tolerance to Cd, with root biomass being affected only at the highest doses applied. Metals accumulated mainly in roots (up to 6,537 mg kg-1 Cd and 21,500 mg kg-1 Zn), root-to-shoot translocation peaked at the 9 mg kg-1 dose for Cd (41%) and 90 mg kg-1 for Zn (40%). At high Cd/Zn applications, expression of Pt-HMA4 in roots decreased significantly. Contrary to the initial presumption, Zn addition increased Cd uptake, reaching hyperaccumulator-like concentrations in shoots (≥ 100 mg kg-1 Cd). Differential root-to-shoot partitioning has a major role in Cd tolerance in P. trichocarpa; partly by down-regulating the Pt-HMA4 gene in roots. Zn addition promoted high Cd uptake without any detriment to plant growth. P. trichocarpa was tolerant to extreme Cd concentrations, offering a great potential to be used in phytoremediation techniques for stabilization/extraction of Cd from soils contaminated by both Cd and Zn.

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The response of Populus spp. to cadmium stress: Chemical, morphological and proteomics study

Cited by 56 publications

References 36 publications

Ecophysiological responses of almond (Prunus dulcis) seedlings to cadmium stress

Ecophysiological responses of almond (Prunus dulcis) seedlings to cadmium stress

Effect of short-term cadmium stress on Populus nigra L. detached leaves

Tolerance, toxicity and transport of Cd and Zn in Populus trichocarpa

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