Response of hrpZPsph-transgenic N. benthamiana plants under cadmium stress

Mitsopoulou, Nikoletta; Lakiotis, Kosmas; Golia, Evangelia E.; Khah, E. M.; Pavli, Ourania I.

doi:10.1007/s11356-020-09204-2

Cited by 4 publications

(4 citation statements)

References 55 publications

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“…The growth and biomass of quinoa plants greatly reduced when Cd and Pb were applied in combination. In line with our findings, reductions in the growth of many plants, including quinoa, have been reported by different researchers for Cd [6,9,12] and Pb [10,11,16]. Cadmium-and Pb-induced reduction in plant growth may be due to restrictions on essential nutrient uptake, chlorophyll biosynthesis, stomatal conductance and the generation of various ROS [6,7,10,41,42].…”

Section: Discussionsupporting

confidence: 91%

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Potassium and Silicon Synergistically Increase Cadmium and Lead Tolerance and Phytostabilization by Quinoa through Modulation of Physiological and Biochemical Attributes

Alharby

Al-Zahrani

Abbas

2022

Toxics

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Cadmium (Cd) and lead (Pb) contaminated soils have increased recently, resulting in limited crop productivity. The ameliorative role of potassium (K) and silicon (Si) is well established in plants under heavy metals stress; however, their combined role under the co-contamination of Cd and Pb is not well understood. We hypothesized that the synergistic application of K and Si would be more effective than their sole treatment for increasing the Pb and Cd tolerance and phytostabilization potential of quinoa (Chenopodium quinoa Willd.). In the current study, quinoa genotype ‘Puno’ was exposed to different concentrations of Cd (0, 200 µM), Pb (0, 500 µM) and their combination with or without 10 mM K and 1.0 mM Si supplementation. The results revealed that the combined stress of Cd and Pb was more detrimental than their separate application to plant biomass (66% less than the control), chlorophyll content and stomatal conductance. Higher accumulation of Pb and Cd led to a limited uptake of K and Si in quinoa plants. The supplementation of metal-stressed plants with 10 mM K and 1.0 mM Si, particularly in combination, caused a significant increase in the growth, stomatal conductance and pigment content of plants. The combined stress of Cd and Pb resulted in an overproduction of H2O2 (11-fold) and TBARS (13-fold) and a decrease in membrane stability (59%). Oxidative stress induced by metals was lessened by 8-fold, 9-fold, 7-fold and 11-fold increases in SOD, CAT, APX and POD activities, respectively, under the combined application of K and Si. It is concluded that the exogenous supply of K and Si in combination is very promising for increasing Cd and Pb tolerance and the phytostabilization potential of quinoa.

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Section: Discussionsupporting

confidence: 91%

“…It is highly mobile in soil-plant systems, and is considered a highly toxic element for plants and humans [7,8]. Even if taken up in very small concentrations, Cd has negative effects on plant growth and physiology [6,9]. Lead (Pb) is another hazardous heavy metal having harmful effects on plants as well as humans [10,11].…”

Section: Introductionmentioning

confidence: 99%

Potassium and Silicon Synergistically Increase Cadmium and Lead Tolerance and Phytostabilization by Quinoa through Modulation of Physiological and Biochemical Attributes

Alharby

Al-Zahrani

Abbas

2022

Toxics

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“…There are differences in soil physical and chemical properties and heavy metal pollution characteristics under different Cd pollution levels, which are related to the degree of influence of heavy metal contents in soil [ 15 ]. Different Cd concentrations have different effects on plant growth, especially under high Cd stress levels, and the effects are most obvious in plant tissue [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of an Arbuscular Mycorrhizal Fungus on the Growth of and Cadmium Uptake in Maize Grown on Polluted Wasteland, Farmland and Slopeland Soils in a Lead-Zinc Mining Area

Chen

Guo

et al. 2022

Toxics

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Arbuscular mycorrhizal fungi (AMF) exist widely in soil polluted by heavy metals and have significant effects on plant growth and cadmium (Cd) uptake. Cd contents differ among wasteland, farmland and slopeland soils in a lead-zinc mining area in Yunnan Province, Southwest China. The effects of AMF on maize growth, root morphology, low-molecular-weight organic acid (LMWOA) concentrations and Cd uptake were investigated via a root-bag experiment. The results show that AMF increased maize growth on Cd-polluted soils, resulting in increases in root length, surface area, volume and branch number, with the effects being stronger in farmland than in wasteland and slopeland soils; increased malic acid and succinic acid secretion 1.3-fold and 1.1-fold, respectively, in roots on farmland soil; enhanced the iron- and manganese-oxidized Cd concentration by 22.6%, and decreased the organic-bound Cd concentration by 12.9% in the maize rhizosphere on farmland soil; and increased Cd uptake 12.5-fold and 1.7-fold in shoots and by 25.7% and 86.6% in roots grown on farmland and slopeland soils, respectively. Moreover, shoot Cd uptake presented significant positive correlations with root surface area and volume and LMWOA concentrations. Thus, these results indicated the possible mechanism that the increased maize Cd uptake induced by AMF was closely related to their effect on root morphology and LMWOA secretion, with the effects varying under different Cd pollution levels.

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“…Staying in the crop field, we then investigated the hrpZ Psphtransgenic Nicotiana benthamiana response under Cd stress (Mitsopoulou et al 2020) and how it differs from its wild-type homologue.…”

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confidence: 99%

Environmental Toxicity Assessment: state of the art and future directions in a world of arising threats

Emmanouil

Κungolos

2021

Environ Sci Pollut Res

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Response of hrpZPsph-transgenic N. benthamiana plants under cadmium stress

Cited by 4 publications

References 55 publications

Potassium and Silicon Synergistically Increase Cadmium and Lead Tolerance and Phytostabilization by Quinoa through Modulation of Physiological and Biochemical Attributes

Potassium and Silicon Synergistically Increase Cadmium and Lead Tolerance and Phytostabilization by Quinoa through Modulation of Physiological and Biochemical Attributes

Effects of an Arbuscular Mycorrhizal Fungus on the Growth of and Cadmium Uptake in Maize Grown on Polluted Wasteland, Farmland and Slopeland Soils in a Lead-Zinc Mining Area

Environmental Toxicity Assessment: state of the art and future directions in a world of arising threats

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