Engineering plants for heavy metal stress tolerance

Wani, Wasia; Masoodi, Khalid Z.; Zaid, Abbu; Wani, Shabir Hussain; Shah, Farheena; Meena, Vijay Singh; Wani, Shafiq A.; Mosa, Kareem A.

doi:10.1007/s12210-018-0702-y

Cited by 104 publications

(30 citation statements)

References 160 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has been already highlighted earlier that metal toxicity in plants lead to enhanced production of ROS which is causing oxidative stress by increased electrolyte leakage, protein oxidation, lipid peroxidation, DNA damage and finally cell death ( Meriga et al, 2004 ; Sharma et al, 2012 ; Wani et al, 2018 ). Cu is catalyzing the overproduction of ROS, such as H 2 O 2 by Haber-Weiss and Fenton reactions leading to lipid peroxidation, damaging nucleic acids, and oxidizing proteins ( Gill and Tuteja, 2010 ; Fidalgo et al, 2013 ).…”

Section: Discussionmentioning

confidence: 99%

Copper Nanoparticles Induced Genotoxicty, Oxidative Stress, and Changes in Superoxide Dismutase (SOD) Gene Expression in Cucumber (Cucumis sativus) Plants

et al. 2018

Self Cite

View full text Add to dashboard Cite

With the increased use of metal nanoparticles (NPs), their access to the food chain has become a main concern to scientists and holds controversial social implications. This research particularly sheds light on copper nanoparticles (CuNP), as they have been commonly used in several industries nowadays. In this study, we investigated the phytotoxicity of CuNP on cucumber (Cucumis sativus) plants grown hydroponically. Atomic Absorption Spectroscopy (AAS), X-Ray Fluorescence (XRF), and Scanning Electron Microscopy (SEM) analysis confirmed that C. sativus treated with CuNP accumulated CuNP in the plant tissues, with higher levels in roots, with amounts that were concentration dependent. Furthermore, genotoxicity was assessed using Random amplified polymorphic DNA (RAPD) technique, and our results showed that CuNP caused genomic alterations in C. sativus. Phenotypical, physiological, and biochemical changes were assessed by determining the CuNP treated plant’s total biomass, chlorophyll, H2O2 and MDA contents, and electrolyte leakage percentage. The results revealed notable adverse phenotypical changes along with decreased biomass and decreased levels of the photosynthetic pigments (Chlorophyll a and b) in a concentration-dependent manner. Moreover, CuNP induced damage to the root plasma membrane as determined by the increased electrolyte leakage. A significant increase in H2O2 and MDA contents were detected in C. sativus CuNP treated plants. Additionally, copper-zinc superoxide dismutase (Cu-Zn SOD) gene expression was induced under CuNP treatment. Overall, our results demonstrated that CuNP of 10–30 nm size were toxic to C. sativus plants. This finding will encourage the safe production and disposal NPs. Thus, reducing nano-metallic bioaccumulation into our food chain through crop plants; that possesses a threat to the ecological system.

show abstract

Section: Discussionmentioning

confidence: 99%

Copper Nanoparticles Induced Genotoxicty, Oxidative Stress, and Changes in Superoxide Dismutase (SOD) Gene Expression in Cucumber (Cucumis sativus) Plants

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…Over the last few decades, there has been a growing incidence of heavy metal (HM) circulation in plant-soil continuum owing to various natural and anthropogenic activities [1]. HMs, including cadmium (Cd), pose a serious danger to the growth of crop plants, as well as human and animal health [2,3].…”

Section: Introductionmentioning

confidence: 99%

Serratia marcescens BM1 Enhances Cadmium Stress Tolerance and Phytoremediation Potential of Soybean Through Modulation of Osmolytes, Leaf Gas Exchange, Antioxidant Machinery, and Stress-Responsive Genes Expression

et al. 2020

Self Cite

View full text Add to dashboard Cite

The heavy metal contamination in plant-soil environment has increased manifold recently. In order to reduce the harmful effects of metal stress in plants, the application of beneficial soil microbes is gaining much attention. In the present research, the role of Serratia marcescens BM1 in enhancing cadmium (Cd) stress tolerance and phytoremediation potential of soybean plants, was investigated. Exposure of soybean plants to two Cd doses (150 and 300 µM) significantly reduced plant growth, biomass, gas exchange attributes, nutrients uptake, antioxidant capacity, and the contents of chlorophyll, total phenolics, flavonoids, soluble sugars, and proteins. Additionally, Cd induced the stress levels of Cd, proline, glycine betaine, hydrogen peroxide, malondialdehyde, antioxidant enzymes (i.e., catalase, CAT; ascorbate peroxidase, APX; superoxide dismutase, SOD; peroxidise, POD), and the expression of stress-related genes (i.e., APX, CAT, Fe-SOD, POD, CHI, CHS, PHD2, VSO, NR, and P5CS) in soybean leaves. On the other hand, inoculation of Cd-stressed soybean plants with Serratia marcescens BM1 significantly enhanced the plant growth, biomass, gas exchange attributes, nutrients uptake, antioxidant capacity, and the contents of chlorophyll, total phenolics, flavonoids, soluble sugars, and proteins. Moreover, Serratia marcescens BM1 inoculation reduced the levels of cadmium and oxidative stress markers, but significantly induced the activities of antioxidant enzymes and the levels of osmolytes and stress-related genes expression in Cd-stressed plants. The application of 300 µM CdCl2 and Serratia marcescens triggered the highest expression levels of stress-related genes. Overall, this study suggests that inoculation of soybean plants with Serratia marcescens BM1 promotes phytoremediation potential and Cd stress tolerance by modulating the photosynthetic attributes, osmolytes biosynthesis, antioxidants machinery, and the expression of stress-related genes.

show abstract

“…Toxic level of heavy metals causes to truncate photosynthetic pigments . [8]. It also generate the oxidative stress by damaging the metabolic series.…”

Section: Metal Stress On Plant Growthmentioning

confidence: 99%

Study of Heavy Metals (Lead and Magnesium) Stress on Rosa indica

Azam

Sajjad

Sarwar

et al. 2019

IJASD

View full text Add to dashboard Cite

In the present study, concentration effects of different heavy metals (Pb and Mg) in Rosa indica are observed to detect the changes in growth response due to effect of metal’s toxicity. Both metals have different tolerance index. Lead is toxic metal and has small tolerance index, whereas Mg is a macronutrient having a high tolerance index which can move in a large scale to different parts of the plants. The least and highest accumulation values of Pb and Mg were observed as 0.608-25.897 mg/L and 20948-52291 mg/L, respectively. The toxicity order in rose plant is Pb>Mg. The bio concentration and translocation factor values of Pb and Mg were 0.97, 0.77, 0.93 and 0.9 respectively. In lead polluted soil, plants height shown is declined due to the concentration of lead (66.38 cm-56.48 cm) whereas plant height increased because of massive concentrations of Mg (63.93 cm-75.03 cm). Results `revealed that accumulation of both metals were excessive in the roots and least in the stem and leaves. It is concluded that rose plant is a good accumulator of lead and magnesium.

show abstract

Engineering plants for heavy metal stress tolerance

Cited by 104 publications

References 160 publications

Copper Nanoparticles Induced Genotoxicty, Oxidative Stress, and Changes in Superoxide Dismutase (SOD) Gene Expression in Cucumber (Cucumis sativus) Plants

Copper Nanoparticles Induced Genotoxicty, Oxidative Stress, and Changes in Superoxide Dismutase (SOD) Gene Expression in Cucumber (Cucumis sativus) Plants

Serratia marcescens BM1 Enhances Cadmium Stress Tolerance and Phytoremediation Potential of Soybean Through Modulation of Osmolytes, Leaf Gas Exchange, Antioxidant Machinery, and Stress-Responsive Genes Expression

Study of Heavy Metals (Lead and Magnesium) Stress on Rosa indica

Contact Info

Product

Resources

About