scholarly journals Differential responses of the scavenging systems for reactive oxygen species (ROS) and reactive carbonyl species (RCS) to UV-B irradiation in Arabidopsis thaliana and its high altitude perennial relative Arabis alpina

2021 ◽  
Author(s):  
Rengin Ozgur ◽  
Baris Uzilday ◽  
Tolga Yalcinkaya ◽  
Turgut Yigit Akyol ◽  
Hasan Yildirim ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Arabidopsis Thaliana ◽  
High Altitude ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Reactive Carbonyl Species ◽  
Arabis Alpina ◽  
Differential Responses ◽  
Carbonyl Species ◽  
Reactive Carbonyl

A novel multi-target strategy to attenuate the progression of Parkinson's disease by diamine hybrid AGE/ALE inhibitor

2021 ◽  
Author(s):  
N André Sasaki ◽  
Pascal Sonnet
Keyword(s):  
Reactive Oxygen Species ◽  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Reactive Carbonyl Species ◽  
Vacuum Cleaning ◽  
Carbonyl Species ◽  
Reactive Carbonyl

Instead of a conventional ‘one-drug-one-target approach’, this article presents a novel multi-target approach with a concept of trapping simultaneously as many detrimental factors as possible involved in the progression of Parkinson's disease. These factors include reactive carbonyl species, reactive oxygen species, Fe3+/Cu2+ and ortho-quinones ( o-quinone), in particular. Different from the known multi-target strategies for Parkinson's disease, it is a sort of ‘vacuum cleaning’ strategy. The new agent consists of reactive carbonyl species scavenging moiety and reactive oxygen species scavenging and metal chelating moiety linked by a spacer. Provided that the capacity of scavenging o-quinones is demonstrated, this type of agent can further broaden its potential therapeutic profile. In order to support this new hypothetical approach, a number of simple in vitro experiments are proposed.

Ectopic ferredoxin I protein promotes root hair growth through induction of reactive oxygen species in Arabidopsis thaliana

2011 ◽  
Vol 168 (5) ◽  
pp. 434-440 ◽  
Author(s):  
Lung-Jiun Shin ◽  
Hsiang-En Huang ◽  
Hsiang Chang ◽  
Yi-Hsien Lin ◽  
Teng-Yung Feng ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Arabidopsis Thaliana ◽  
Root Hair ◽  
Hair Growth ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Root Hair Growth ◽  
Ferredoxin I

Metal-specific and NADPH oxidase dependent changes in lipoxygenase and NADPH oxidase gene expression in Arabidopsis thaliana exposed to cadmium or excess copper

2010 ◽  
Vol 37 (6) ◽  
pp. 532 ◽  
Author(s):  
Tony Remans ◽  
Kelly Opdenakker ◽  
Karen Smeets ◽  
Dennis Mathijsen ◽  
Jaco Vangronsveld ◽  
...  
Keyword(s):  
Gene Expression ◽  
Reactive Oxygen Species ◽  
Arabidopsis Thaliana ◽  
Nadph Oxidase ◽  
Transcriptional Profiling ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Adaptive Responses ◽  
Oxidase Gene ◽  
Opposing Effects

Reactive oxygen species produced by NADPH oxidase and oxylipins derived from lipoxygenase activity can signal various stress conditions and have been implicated when plants are exposed to heavy metals. Transcriptional profiling of the 10 NADPH oxidase and 6 lipoxygenase genes was performed after exposure of Arabidopsis thaliana wild-type and NADPH oxidase mutants to 5 µM CdSO4 or 2 µM CuSO4 for 24 h. Under these short exposures to environmentally realistic concentrations of Cd or Cu, plants modulate signalling networks that regulate the onset of adaptive responses. Metal-specific NADPH oxidase genes were upregulated by Cd but downregulated by Cu, and metal-specific lipoxygenase gene expression was observed only after Cu exposure. Genes that are responsive to both metals were upregulated and may be responsive to general oxidative stress. For all metal-responsive genes except RBOHD, distinct responses were observed between leaves and roots, which may be due to different stress intensities and signalling mechanisms. Mutation of NADPH oxidase genes had opposing effects on gene expression after Cd or Cu exposure. Upregulation of LOX1 and LOX6 in the roots after exposure to Cd depended on NADPH oxidase gene expression, whereas LOX3 and LOX6 expression was induced more strongly in NADPH oxidase mutants after Cu exposure. Furthermore, NADPH oxidases regulated their own expression level and that of other members of the gene family when exposed to Cd or Cu. The results suggest interplay between reactive oxygen species and oxylipin signalling under Cd or Cu stress, and are useful as a basis for genetic studies to unravel metal-specific signalling mechanisms.

scholarly journals Negative regulation of autophagy by sulfide in Arabidopsis thaliana is independent of reactive oxygen species

2016 ◽  
pp. pp.00110.2016 ◽  
Author(s):  
Ana M. Laureano-Marín ◽  
Inmaculada Moreno ◽  
Luis C. Romero ◽  
Cecilia Gotor
Keyword(s):  
Reactive Oxygen Species ◽  
Arabidopsis Thaliana ◽  
Reactive Oxygen ◽  
Negative Regulation ◽  
Oxygen Species
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