Selenium nanoparticles ameliorate Brassica napus L. cadmium toxicity by inhibiting the respiratory burst and scavenging reactive oxygen species

2021 ◽  
pp. 125900
Author(s):  
Wen-Yu Qi ◽  
Qiang Li ◽  
Hui Chen ◽  
Jun Liu ◽  
Su-Fang Xing ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Brassica Napus ◽  
Respiratory Burst ◽  
Cadmium Toxicity ◽  
Reactive Oxygen ◽  
Selenium Nanoparticles ◽  
Oxygen Species ◽  
Brassica Napus L

scholarly journals β-aminobutyric Acid Pretreatment Confers Salt Stress Tolerance in Brassica napus L. by Modulating Reactive Oxygen Species Metabolism and Methylglyoxal Detoxification

2020 ◽  
Author(s):  
Jubayer Al Mahmud ◽  
Mirza Hasanuzzaman ◽  
M. Iqbal R. Khan ◽  
Kamrun Nahar ◽  
Masayuki Fujita
Keyword(s):  
Reactive Oxygen Species ◽  
Salt Stress ◽  
Brassica Napus ◽  
Stress Tolerance ◽  
Photosynthetic Pigments ◽  
Reactive Oxygen ◽  
Aminobutyric Acid ◽  
Oxygen Species ◽  
Salt Stress Tolerance ◽  
Brassica Napus L

Salinity is a serious environmental hazard which limits world agricultural production by adversely affects plant physiology and biochemistry. Hence increase tolerance against salt stress is very important. In this study, we explored the function of β-aminobutyric acid (BABA) in enhancing salt stress tolerance in rapeseed (Brassica napus L.). After pretreatment with BABA, seedlings were exposed to NaCl (100 mM and 150 mM) for 2 days. Salt stress increased Na content and decreased K content in shoot and root. It disrupted the antioxidant defense system by producing reactive oxygen species (ROS; H2O2 and O2•−), methylglyoxal (MG) content and causing oxidative stress. It also reduced the growth and photosynthetic pigments of seedlings but increased proline (Pro) content. However, BABA pretreatment in salt-stressed seedlings increased ascorbate (AsA) and glutathione (GSH) contents; GSH/GSSG ratio; and the activities of ascorbate peroxidase (APX), monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR), glutathione reductase (GR), glutathione peroxidase (GPX), superoxide dismutase (SOD), catalase (CAT), glyoxalase I (Gly I), and glyoxalase II (Gly II) as well as growth and photosynthetic pigments of plants. In addition, compared to salt stress alone BABA increased Pro content, reduced the H2O2, MDA and MG contents and decreased Na content in root and increased K content in shoot and root of rapeseed seedlings.

scholarly journals The Arabidopsis RboHB Encoded by At1g09090 Is Important for Resistance against Nematodes

2020 ◽  
Vol 21 (15) ◽  
pp. 5556 ◽  
Author(s):  
Abdalmenem I. M. Hawamda ◽  
Adil Zahoor ◽  
Amjad Abbas ◽  
Muhammad Amjad Ali ◽  
Holger Bohlmann
Keyword(s):  
Reactive Oxygen Species ◽  
Respiratory Burst ◽  
Reactive Oxygen ◽  
Heterodera Schachtii ◽  
Oxygen Species ◽  
Cyst Nematodes ◽  
Feeding Site ◽  
Plant Life ◽  
Respiratory Burst Oxidase ◽  
Respiratory Burst Oxidase Homologue

Reactive oxygen species are a byproduct of aerobic metabolic processes but are also produced by plants in defense against pathogens. In addition, they can function as signaling molecules that control various aspects of plant life, ranging from developmental processes to responses to abiotic and biotic stimuli. In plants, reactive oxygen species can be produced by respiratory burst oxidase homologues. Arabidopsis contains 10 genes for respiratory burst oxidase homologues that are involved in different aspects of plant life. Plant pathogenic cyst nematodes such as Heterodera schachtii induce a syncytium in the roots of host plants that becomes a feeding site which supplies nutrients throughout the life of the nematode. In line with this function, the transcriptome of the syncytium shows drastic changes. One of the genes that is most strongly downregulated in syncytia codes for respiratory burst oxidase homologue B. This gene is root-specific and we confirm here the downregulation in nematode feeding sites with a promoter::GUS (β-glucuronidase) line. Overexpression of this gene resulted in enhanced resistance against nematodes but also against leaf-infecting pathogens. Thus, respiratory burst oxidase homologue B has a role in resistance. The function of this gene is in contrast to respiratory burst oxidase homologues D and F, which have been found to be needed for full susceptibility of Arabidopsis to H. schachtii. However, our bioinformatic analysis did not find differences between these proteins that could account for the opposed function in the interaction with nematodes.

Mitochondrion-targeted selenium nanoparticles enhance reactive oxygen species-mediated cell death

Nanoscale ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 1389-1396 ◽  
Author(s):  
Yuan Zhuang ◽  
Longjie Li ◽  
Liandong Feng ◽  
Shuangshuang Wang ◽  
Huimin Su ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Cell Death ◽  
Cancer Cells ◽  
Reactive Oxygen ◽  
Selenium Nanoparticles ◽  
Oxygen Species ◽  
Targeting Ability ◽  
Mitochondria Targeting

Selenium nanoparticles (SeNPs) with mitochondria targeting ability can significantly enhance the reactive oxygen species (ROS) induced cell death in cancer cells, while remaining less toxic in healthy cells.

Regulation of Reactive Oxygen Species Metabolism and Glyoxalase Systems by Exogenous Osmolytes Confers Thermotolerance in Brassica napus

2019 ◽  
Vol 72 (1) ◽  
pp. 3-16 ◽  
Author(s):  
Mirza Hasanuzzaman ◽  
Kamrun Nahar ◽  
M. Iqbal R. Khan ◽  
Jubayer Al Mahmud ◽  
M. Mahabub Alam ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Brassica Napus ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Reactive Oxygen Species Metabolism

Effects of raspberry fruit extracts and ellagic acid on respiratory burst in murine macrophages

2014 ◽  
Vol 5 (6) ◽  
pp. 1167-1174 ◽  
Author(s):  
Lina Raudone ◽  
Ramune Bobinaite ◽  
Valdimaras Janulis ◽  
Pranas Viskelis ◽  
Sonata Trumbeckaite
Keyword(s):  
Reactive Oxygen Species ◽  
Respiratory Burst ◽  
Ellagic Acid ◽  
Reactive Oxygen Species Production ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Murine Macrophages ◽  
Fruit Extracts ◽  
Species Production

The main finding of our study is that raspberry extracts and ellagic acid inhibit reactive oxygen species production in PMA stimulated macrophages.

scholarly journals Alteration of Neutrophil Reactive Oxygen Species Production by Extracts of Devil’s Claw (Harpagophytum)

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Mbaki Muzila ◽  
Kimmo Rumpunen ◽  
Helen Wright ◽  
Helen Roberts ◽  
Melissa Grant ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Respiratory Burst ◽  
Dna Analysis ◽  
Reactive Oxygen ◽  
Human Neutrophils ◽  
Putative Hybrid ◽  
Oxygen Species ◽  
New Variety ◽  
Devil’S Claw ◽  
Anti Inflammatory

Harpagophytum, Devil’s Claw, is a genus of tuberiferous xerophytic plants native to southern Africa. Some of the taxa are appreciated for their medicinal effects and have been traditionally used to relieve symptoms of inflammation. The objectives of this pilot study were to investigate the antioxidant capacity and the content of total phenols, verbascoside, isoverbascoside, and selected iridoids, as well as to investigate the capacity of variousHarpagophytumtaxa in suppressing respiratory burst in terms of reactive oxygen species produced by human neutrophils challenged with phorbol myristate acetate (PMA), opsonisedStaphylococcus aureus,andFusobacterium nucleatum.Harpagophytumplants were classified into different taxa according to morphology, and DNA analysis was used to confirm the classification. A putative new variety ofH. procumbensshowed the highest degree of antioxidative capacity. Using PMA, threeHarpagophytumtaxa showed anti-inflammatory effects with regard to the PBS control. A putative hybrid betweenH. procumbensandH. zeyheriin contrast showed proinflammatory effect on the response of neutrophils toF. nucleatumin comparison with treatment with vehicle control.Harpagophytumtaxa were biochemically very variable and the response in suppressing respiratory burst differed. Further studies with larger number of subjects are needed to corroborate anti-inflammatory effects of different taxa ofHarpagophytum.

Sign in / Sign up

Export Citation Format

Share Document