The role of hydrogen bonding in the cuticular wax of Hordeum vulgare L.

1997 ◽  
Vol 26 (2) ◽  
pp. 195-201 ◽  
Author(s):  
E. C. Reynhardt
Keyword(s):  
Hydrogen Bonding ◽  
Hordeum Vulgare ◽  
Cuticular Wax ◽  
Hordeum Vulgare L

Role of Ca 2+ in phenolic compound metabolism of barley ( Hordeum vulgare L.) sprouts under NaCl stress

2019 ◽  
Vol 99 (11) ◽  
pp. 5176-5186 ◽  
Author(s):  
Yan Ma ◽  
Pei Wang ◽  
Ting Zhou ◽  
Zhijie Chen ◽  
Zhenxin Gu ◽  
...  
Keyword(s):  
Hordeum Vulgare ◽  
Phenolic Compound ◽  
Nacl Stress ◽  
Hordeum Vulgare L

scholarly journals A Possible Role of the Aleurone Expressed Gene HvMAN1 in the Hydrolysis of the Cell Wall Mannans of the Starchy Endosperm in Germinating Hordeum vulgare L. Seeds

2020 ◽  
Vol 10 ◽  
Author(s):  
Raquel Iglesias-Fernández ◽  
Elena Pastor-Mora ◽  
Jesús Vicente-Carbajosa ◽  
Pilar Carbonero
Keyword(s):  
Cell Wall ◽  
Hordeum Vulgare ◽  
Starchy Endosperm ◽  
Hordeum Vulgare L ◽  
Hydrolysis Of

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>

scholarly journals Boron induces seed germination and seedling growth of Hordeum vulgare L. under Nacl stress

2018 ◽  
Vol 8 ◽  
pp. 1224-1234
Author(s):  
Saud A. Alamri ◽  
Manzer H Siddiqui ◽  
Mutahhar Y. Al-Khaishani ◽  
Hayssam M. Ali
Keyword(s):  
Hordeum Vulgare ◽  
Seed Germination ◽  
Seedling Growth ◽  
Growth Traits ◽  
Nacl Stress ◽  
High Dose ◽  
Barley Plant ◽  
Hordeum Vulgare L ◽  
Viable Cells

Boron (B), an essential micronutrient, helps the plants to complete their life cycle successfully. Therefore, the present experiment was conducted to study (1) the role of B in seed germination and seedling growth, (2) the toxicity effect of B in seed germination and seedling growth and (3) the role of B in tolerance of barley (Hordeum vulgare L. var. ‘Bakore’) to NaCl stress. Under NaCl stress and non-stress conditions, application of high levels of B (100 µM) decreased parameters of germination (G%, VI, GI and MGT), growth (RL, SL, RFW, SFW, RDW and SDW), except the accumulation of Pro and MDA in barley seedlings. Also, a fluorescence study reveals that production of ROS (H2O2 and O2 •—) and non-viable cells increased in roots of barley seedlings treated with NaCl and high dose of B. An alteration in anatomical structure of barley seedlings was observed with the application of NaCl and high dose of B. However, a low concentration of B (50 µM) proved best and increased all germination and growth traits of barley seedlings by increasing further accumulation of Pro. Also, 50 µM of B significantly increased the biosynthesis of photosynthetic pigments (Chl a, b and total Chl) and deceased formation of ROS and viable cells in roots. Therefore, concluded that sufficient dose of B could be beneficial for barley plant in improving the tolerance to NaCl stress.

scholarly journals Role of Cystoseira mediterranea extracts (Sauv.) in the Alleviation of salt stress adverse effect and enhancement of some Hordeum vulgare L. (barley) growth parameters

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Leila Bensidhoum ◽  
El-hafid Nabti
Keyword(s):  
Hydrogen Peroxide ◽  
Lipid Peroxidation ◽  
Salt Stress ◽  
Hordeum Vulgare ◽  
Shoot Growth ◽  
Growth Parameters ◽  
Membrane Integrity ◽  
Dry Weight ◽  
Hordeum Vulgare L

AbstractCystoseira mediterranea (Sauv.) extract was tested for its ability to restore barley (Hordeum vulgare) growth under salt stress (350 mM NaCl), shoot growth; membrane integrity; lipid peroxidation and hydrogen peroxide determination were performed. In normal conditions, the obtained data revealed the ability of the extract to stimulate most of barley growth parameters. However, it showed significant effect on most of barley growth parameters (plant height, fresh and dry weight of shoots and roots) and chlorophyll content, under salt stress. The measurement of stress parameters (membrane integrity, lipid peroxidation and hydrogen peroxide) revealed significant effect of C. mediterranea extract on reducing the deleterious impact of salt stress on barley seedlings.

The role of biochar-microbe interaction in alleviating heavy metal toxicity in Hordeum vulgare L. grown in highly polluted soils

2019 ◽  
Vol 104 ◽  
pp. 93-101 ◽  
Author(s):  
Gorovtsov Andrey ◽  
Vishnu Rajput ◽  
Minkina Tatiana ◽  
Mandzhieva Saglara ◽  
Sushkova Svetlana ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Hordeum Vulgare ◽  
Metal Toxicity ◽  
Heavy Metal Toxicity ◽  
Hordeum Vulgare L ◽  
Polluted Soils

Magnesium Chelatase of Hordeum vulgare L. Is Not Activated by Light but Inhibited by Pheophorbide

1997 ◽  
Vol 52 (3-4) ◽  
pp. 144-152 ◽  
Author(s):  
Gerhard Pöpperl ◽  
Ulrike Oster ◽  
Inge Bios ◽  
Wolfhart Rüdiger
Keyword(s):  
Enzyme Activity ◽  
Hordeum Vulgare ◽  
White Light ◽  
Envelope Membrane ◽  
Strong Inhibition ◽  
Hordeum Vulgare L ◽  
Magnesium Chelatase ◽  
Metal Free ◽  
Plastid Envelope

AbstractThe enzyme activity of magnesium chelatase was determined in intact etioplasts of barley (Hordeum vulgare L.) seedlings. Irradiation of isolated plastids with white light for 15 min does not lead to any activation of the enzyme but to a decrease in activity, especially in etioplasts. The enzyme was inhibited by chlorophyllide and zinc pheophorbide only to a certain extent. Strong inhibition was observed with the metal-free pheophorbide (Ki = 0.92 μM) but not with pheophytin or chlorophyll. Penetration of chlorophyllide through the envelope membrane was confirmed by the chlorophyll synthase reaction that occurs in the inner membranes of etioplasts and chloroplasts. The possible role of inhibition of magnesium chelatase by pheophorbide in senescent leaves and tetrapyrrole transport across the plastid envelope are discussed.

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