Zinc accumulation, photosynthetic gas exchange, and chlorophyll a fluorescence in Zn-stressed Miscanthus × giganteus plants

Andrejić, Gordana; Gajić, Gordana; Prica, Milijana; Dželetović, Željko; Rakić, Tamara

doi:10.1007/s11099-018-0827-3

Cited by 62 publications

(41 citation statements)

References 63 publications

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“…Elevated Pb concentrations in M.×giganteus leaves negatively affected several parameters of gas exchange: it caused a significant decline in A (ρ=-0.502), g s (ρ=-0.986) and increased respiration in the dark (ρ=0.477). Similarly, a decrease in A and g s was reported for M.×giganteus plants grown in Zn contaminated land [51], and in As, Pb, and Sb highly contaminated technosols [27]. Investigations related to Pb toxicity in different plant species have shown that it inhibits photosynthesis by causing negative effects on various components of the photosynthetic machinery; the authors detected Pb-induced distortions of chloroplast ultrastructure, obstruction of electron transport rate, decreased stomatal conductance and gas exchange, inhibition of the activities of enzymes involved in the Calvin cycle, etc.…”

Section: Discussionsupporting

confidence: 70%

Assessment of the adaptive and phytoremediation potential of Miscanthus×giganteus grown in flotation tailings

Andrejić

Šinžar-Sekulić

Prica

et al. 2019

Arch biol sci (Beogr)

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Mining activities produce enormous amounts of metal-contaminated waste that is the source of ecosystem pollution by metals. Owing to complex adverse environmental conditions, the surface of abandoned flotation tailings is completely devoid of vegetation cover and is therefore very susceptible to fluvial erosion, wind dispersal to neighboring ecosystems and leaching of heavy metals into ground waters. The aim of this study was to estimate the adaptive potential of Miscanthus×giganteus (Poaceae) to grow on flotation tailings without any input. In this field experiment, plants were grown for four months in flotation tailings and in unpolluted control chernozem soil. Plants accumulated and retained the major part of metals within their roots, exhibiting their very low transfer to aerial parts, which all define M.×giganteus as a phytoexcluder plant species. Plants grown in flotation tailings showed significant reduction in the net CO 2 assimilation rate and growth parameters, and there was no negative impact on pigment content, maximum quantum yield of PSII photochemistry, lipid peroxidation level and total antioxidative capacity in leaves. The obtained results indicate that despite reduced growth, M.×giganteus can be cultivated for phytoremediation of flotation tailings.Abbreviations: 1,1-diphenyl-2-picrylhydrazyl (DPPH); 2-thiobarbituric acid (TBA); net CO 2 assimilation rate (A); concentration of chlorophyll (Chl); concentration of total carotenoids (Car); malondialdehyde (MDA); maximum quantum efficiency of PSII photochemistry (Fv/Fm); stomatal conductance (g s ); reactive oxygen species (ROS); transpiration rate (E) Arch Biol Sci. 2019;71(4):687-696 https://doi.

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Section: Discussionsupporting

confidence: 70%

Assessment of the adaptive and phytoremediation potential of Miscanthus×giganteus grown in flotation tailings

Andrejić

Šinžar-Sekulić

Prica

et al. 2019

Arch biol sci (Beogr)

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“…observed decrease of F v /F m after one month of exposure to zinc contaminated soil [42]. In that research miscanthus did not display such a low value of maximum quantum yield of PSII photochemistry as in our study, contrary, plants showed chlorotic spots and dry margins on their leaves, Rapid drop of F v /F m was observed after exposure to physical stress rather than chemical.…”

Section: Physiological Status and Changes In Leaf Fluorescencecontrasting

confidence: 53%

Physiological response of Miscanthus x giganteus grown in nutritionally poor post-military soil

Malinská

Pidlisnyuk

Nebeská

et al. 2019

Preprint

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Background: To determine the level of plant stress of second-generation biofuel crop Miscanthus x giganteus ( Mxg ) grown in poor quality post-military soils using physiological parameters; to identify impact of plant growth regulators (PGRs) on the stress reduction and to select the fluorescence indicators most suitable for quantification of stress. Plant fitness was quantified with non-invasive measurement of leaf fluorescence using 16 different indexes. Simultaneously visible stress signs were observed on stems and leaves and differences were revealed by microscopy of leaf sections. Results: Leaf fluorescence analysis, visual observation and changes of leaf anatomy revealed significant stress in all tested subjects . Besides commonly used F v /F m and P.I. (performance index), the fluorescence parameter T fm (time to achieve maximum fluorescence) seems to be rather sensitive and applicable for revealing finer differences. However, none of investigated parameters proved significant positive effect of PGRs on stress reduction. Conclusions: Measuring F v /F m , P.I., and T fm is a suitable method for revealing stress affecting Mxg in poor post-military soils. Since PGRs application did not reduce the stress level, direct application of soil amendments should be considered for stress reduction and improving the biomass quality.

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“…The bioconcentration factor (BCF) reflects the ability of plants to accumulate metals and is defined ccording to Zhou et al (2013) and Andrejić et al (2018) as: BCF = (concentration of Pb or Zn in plant tissues)/(concentration of Pb or Zn in soil). The translocation factor (TF) reflects the ability of plants to translocate metals and is defined as in Zhou et al (2013): TF = (concentration of Pb or Zn in plant aerial parts)/(concentration of Pb or Zn in roots).…”

Section: Total Metal Contentmentioning

confidence: 99%

Effects of Pb and Zn toxicity on chlorophyll fluorescence and biomass production of Koelreuteria paniculata and Zelkova schneideriana young plants

Huang¹,

Zhu²,

Yan³

et al. 2019

Photosynt.

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The influence of Pb and Zn on chlorophyll (Chl) fluorescence and plant growth of one-year-old Koelreuteria paniculata and Zelkova schneideriana young plants was investigated. Pb and Zn contents in plant organs were measured. The results showed Pb and Zn stress decreased photochemical quenching and quantum efficiency of PSII, but increased energy dissipation in the tested plants. At the same time, maximum net photosynthetic rate, maximum quantum use efficiency, and organ biomass were reduced. Under the same concentration of heavy metals, the damage induced by Zn toxicity was more serious than that of Pb. Pb was less accumulated in leaves, with a mild effect on photosynthesis. Zn was mostly accumulated in leaves and strongly disturbed chloroplast functioning and affected photosynthesis. Pb and Zn had different pathway to influence biomass production, and both tested plants might use different mechanisms of action for heavy metal stress resistance.

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Zinc accumulation, photosynthetic gas exchange, and chlorophyll a fluorescence in Zn-stressed Miscanthus × giganteus plants

Cited by 62 publications

References 63 publications

Assessment of the adaptive and phytoremediation potential of Miscanthus×giganteus grown in flotation tailings

Assessment of the adaptive and phytoremediation potential of Miscanthus×giganteus grown in flotation tailings

Physiological response of Miscanthus x giganteus grown in nutritionally poor post-military soil

Effects of Pb and Zn toxicity on chlorophyll fluorescence and biomass production of Koelreuteria paniculata and Zelkova schneideriana young plants

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