scholarly journals Hyper, a Hydrogen Peroxide Sensor, Indicates the Sensitivity of the Arabidopsis Root Elongation Zone to Aluminum Treatment

Sensors ◽  
2015 ◽  
Vol 15 (1) ◽  
pp. 855-867 ◽  
Author(s):  
Alejandra Hernández-Barrera ◽  
Ana Velarde-Buendía ◽  
Isaac Zepeda ◽  
Federico Sanchez ◽  
Carmen Quinto ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Root Elongation ◽  
Elongation Zone ◽  
Arabidopsis Root ◽  
Hydrogen Peroxide Sensor

scholarly journals Actin filaments mediated root growth inhibition by changing their distribution under UV-B and hydrogen peroxide exposure in Arabidopsis

2020 ◽  
Vol 53 (1) ◽  
Author(s):  
Meiting Du ◽  
Yanhong Wang ◽  
Huize Chen ◽  
Rong Han
Keyword(s):  
Hydrogen Peroxide ◽  
Actin Filaments ◽  
Root Elongation ◽  
Root Tip ◽  
Root Growth Inhibition ◽  
Control Group ◽  
Dependent Manner ◽  
Elongation Zone ◽  
Wide Range ◽  
Root Morphogenesis

Abstract Background UV-B signaling in plants is mediated by UVR8, which interacts with transcriptional factors to induce root morphogenesis. However, research on the downstream molecules of UVR8 signaling in roots is still scarce. As a wide range of functional cytoskeletons, how actin filaments respond to UV-B-induced root morphogenesis has not been reported. The aim of this study was to investigate the effect of actin filaments on root morphogenesis under UV-B and hydrogen peroxide exposure in Arabidopsis. Results A Lifeact-Venus fusion protein was used to stain actin filaments in Arabidopsis. The results showed that UV-B inhibited hypocotyl and root elongation and caused an increase in H2O2 content only in the root but not in the hypocotyl. Additionally, the actin filaments in hypocotyls diffused under UV-B exposure but were gathered in a bundle under the control conditions in either Lifeact-Venus or uvr8 plants. Exogenous H2O2 inhibited root elongation in a dose-dependent manner. The actin filaments changed their distribution from filamentous to punctate in the root tips and mature regions at a lower concentration of H2O2 but aggregated into thick bundles with an abnormal orientation at H2O2 concentrations up to 2 mM. In the root elongation zone, the actin filament arrangement changed from lateral to longitudinal after exposure to H2O2. Actin filaments in the root tip and elongation zone were depolymerized into puncta under UV-B exposure, which showed the same tendency as the low-concentration treatments. The actin filaments were hardly filamentous in the maturation zone. The dynamics of actin filaments in the uvr8 group under UV-B exposure were close to those of the control group. Conclusions The results indicate that UV-B inhibited Arabidopsis hypocotyl elongation by reorganizing actin filaments from bundles to a loose arrangement, which was not related to H2O2. UV-B disrupted the dynamics of actin filaments by changing the H2O2 level in Arabidopsis roots. All these results provide an experimental basis for investigating the interaction of UV-B signaling with the cytoskeleton.

A novel non-enzymatic hydrogen peroxide sensor based on poly-melamine film modified with platinum nanoparticles

RSC Advances ◽  
2014 ◽  
Vol 4 (85) ◽  
pp. 45185-45190 ◽  
Author(s):  
Sijing He ◽  
Zuanguang Chen ◽  
Yanyan Yu ◽  
Lijuan Shi
Keyword(s):  
Hydrogen Peroxide ◽  
Platinum Nanoparticles ◽  
Hydrogen Peroxide Sensor

Synthesis and Characterization of a New Cu (BHB)2/Fe-MIL-101-NH2 Composite: A Novel Hydrogen Peroxide Sensor based upon the Bimetallic Complex

2021 ◽  
Vol 168 (1) ◽  
pp. 017508
Author(s):  
Kazem Karami ◽  
Parvaneh Bayat ◽  
Hossein Khosropour ◽  
Firouzeh Siadatnasab ◽  
Behzad Rezaei ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Synthesis And Characterization ◽  
Bimetallic Complex ◽  
Hydrogen Peroxide Sensor

Amperometric hydrogen peroxide sensor based on the use of CoFe2O4 hollow nanostructures

2017 ◽  
Vol 184 (8) ◽  
pp. 2579-2586 ◽  
Author(s):  
Karuppaiah Vasuki ◽  
Kaliyamoorthy Justice Babu ◽  
Sunirmal Sheet ◽  
Ganesan Siva ◽  
Ae Rhan Kim ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Hydrogen Peroxide Sensor ◽  
Hollow Nanostructures

scholarly journals Amperometric Non-Enzymatic Hydrogen Peroxide Sensor Based on Aligned Zinc Oxide Nanorods

Sensors ◽  
2016 ◽  
Vol 16 (7) ◽  
pp. 1004 ◽  
Author(s):  
Naif Al-Hardan ◽  
Muhammad Abdul Hamid ◽  
Roslinda Shamsudin ◽  
Norinsan Othman ◽  
Lim Kar Keng
Keyword(s):  
Hydrogen Peroxide ◽  
Zinc Oxide ◽  
Zinc Oxide Nanorods ◽  
Hydrogen Peroxide Sensor ◽  
Oxide Nanorods
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