Exogenous 2-aminoethanol can diminish paraquat induced oxidative stress in barley (Hordeum vulgare L.)

2005 ◽  
Vol 45 (2) ◽  
pp. 103-112 ◽  
Author(s):  
René Mascher ◽  
Susan Fischer ◽  
Waltraud Scheiding ◽  
Aurora Neagoe ◽  
Hans Bergmann
Keyword(s):  
Oxidative Stress ◽  
Hordeum Vulgare ◽  
Hordeum Vulgare L

Antioxidant activity of whole grain Qingke (Tibetan Hordeum vulgare L.) toward oxidative stress in d-galactose induced mouse model

2018 ◽  
Vol 45 ◽  
pp. 355-362 ◽  
Author(s):  
Xuejuan Xia ◽  
Yuxiao Xing ◽  
Guannan Li ◽  
Jinsong Wu ◽  
Jianquan Kan
Keyword(s):  
Oxidative Stress ◽  
Antioxidant Activity ◽  
Hordeum Vulgare ◽  
Mouse Model ◽  
Whole Grain ◽  
Hordeum Vulgare L

scholarly journals The role of exogenous silicon to mitigate Al2O3 nanoparticle-induced toxicity in barley (Hordeum vulgare L.)

2021 ◽  
Vol 117 (1) ◽  
pp. 1
Author(s):  
Ghader HABIBI ◽  
Maryam SHAHINFAR
Keyword(s):  
Oxidative Stress ◽  
Hordeum Vulgare ◽  
Inductively Coupled Plasma ◽  
Direct Evidence ◽  
Hordeum Vulgare L ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Exogenous Addition ◽  
Al2o3 Nanoparticle

<p>In this study, we used silicon (Si, in the form of K<sub>2</sub>SiO<sub>3</sub>, 2 mM) to alleviate the toxicity of aluminum oxide (Al<sub>2</sub>O<sub>3</sub>) nanoparticles (NPs) in barley (<em>Hordeum vulgare</em> L.). Using Inductively Coupled Plasma-Mass Spectroscopy (ICP-MS) analyses, we showed that the Al<sub>2</sub>O<sub>3</sub> NPs were taken up by barley plants. Barley growth was negatively affected by the addition of 3 g l<sup>-1</sup> nano-Al<sub>2</sub>O<sub>3</sub>, whereas the diminishing effect of NPs on barley growth was not obvious when 1 g l<sup>-1</sup> nano-Al<sub>2</sub>O<sub>3</sub> was applied, indicating that the nano-Al<sub>2</sub>O<sub>3</sub> action is dependent on nano-Al<sub>2</sub>O<sub>3</sub> dose. Si pretreatment ameliorated toxic effects of high nano-Al<sub>2</sub>O<sub>3</sub> on root growth. Si pretreatment did not decrease nano-Al<sub>2</sub>O<sub>3</sub> entry into roots but reduced nano-Al<sub>2</sub>O<sub>3</sub> accumulation in the shoot. The restriction of the root-to-shoot translocation of nano-Al<sub>2</sub>O<sub>3 </sub>was one of the important mechanisms for Si to mitigate high nano-Al<sub>2</sub>O<sub>3</sub> toxicity. The occurrence of oxidative stress was found under 3 g l<sup>1</sup> nano-Al<sub>2</sub>O<sub>3 </sub>treatment, as evaluated by the accumulation of malondialdehyde (MDA). Exogenous addition of Si could alleviate toxicity symptoms induced by Al<sub>2</sub>O<sub>3</sub> nanoparticles by reducing lipid peroxidation via enhancing antioxidant activity of catalase as well as by limiting the root-to-shoot translocation of nano-Al<sub>2</sub>O<sub>3</sub>. These data provide the first direct evidence that the Si pretreatment ameliorates nano Al<sub>2</sub>O<sub>3</sub> phytotoxicity in plants.</p>

Antioxidant activities of malt extract from barley (Hordeum vulgare L.) toward various oxidative stress in vitro and in vivo

2010 ◽  
Vol 118 (1) ◽  
pp. 84-89 ◽  
Author(s):  
Yang Qingming ◽  
Pan Xianhui ◽  
Kong Weibao ◽  
Yang Hong ◽  
Su Yidan ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Hordeum Vulgare ◽  
Antioxidant Activities ◽  
Malt Extract ◽  
Hordeum Vulgare L

Salicylic acid alleviates glyphosate-induced oxidative stress in Hordeum vulgare L

2019 ◽  
Vol 241 ◽  
pp. 226-234 ◽  
Author(s):  
Sofia Spormann ◽  
Cristiano Soares ◽  
Fernanda Fidalgo
Keyword(s):  
Oxidative Stress ◽  
Salicylic Acid ◽  
Hordeum Vulgare ◽  
Hordeum Vulgare L

Ultrastructure and Senescence in an Achloroplastic Mutant of Hordeum vulgare L. cv. Dyan

1992 ◽  
Vol 50 (1) ◽  
pp. 844-845
Author(s):  
R.H.M. Cross ◽  
C.E.J. Botha ◽  
A.K. Cowan ◽  
B.J. Hartley
Keyword(s):  
Cell Wall ◽  
Hordeum Vulgare ◽  
Leaf Tissue ◽  
Ultrastructural Changes ◽  
Hordeum Vulgare L ◽  
Mesophyll Cells ◽  
Lethal Mutant ◽  
Cytoplasmic Matrix ◽  
Close Proximity ◽  
Pinocytotic Vesicles

Senescence is an ordered degenerative process leading to death of individual cells, organs and organisms. The detection of a conditional lethal mutant (achloroplastic) of Hordeum vulgare has enabled us to investigate ultrastructural changes occurring in leaf tissue during foliar senescence.Examination of the tonoplast structure in six and 14 day-old mutant tissue revealed a progressive degeneration and disappearance of the membrane, apparently starting by day six in the vicinity of the mitochondria associated with the degenerating proplastid (Fig. 1.) where neither of the plastid membrane leaflets is evident (arrows, Fig. 1.). At this stage there was evidence that the mitochondrial membranes were undergoing retrogressive changes, coupled with disorganization of cristae (Fig. 2.). Proplastids (P) lack definitive prolamellar bodies. The cytoplasmic matrix is largely agranular, with few endoplasmic reticulum (ER) cisternae or polyribosomal aggregates. Interestingly, large numbers of actively-budding dictysomes, associated with pinocytotic vesicles, were observed in close proximity to the plasmalemma of mesophyll cells (Fig. 3.). By day 14 however, mesophyll cells showed almost complete breakdown of subcellular organelle structure (Fig. 4.), and further evidence for the breakdown of the tonoplast. The final stage of senescence is characterized by the solubilization of the cell wall due to expression and activity of polygalacturonase and/or cellulose. The presence of dictyosomes with associated pinocytotic vesicles formed from the mature face, in close proximity to both the plasmalemma and the cell wall, would appear to support the model proposed by Christopherson for the secretion of cellulase. This pathway of synthesis is typical for secretory glycoproteins.

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