scholarly journals Double Mutants Deficient in Cytosolic and Thylakoid Ascorbate Peroxidase Reveal a Complex Mode of Interaction between Reactive Oxygen Species, Plant Development, and Response to Abiotic Stresses

2007 ◽  
Vol 144 (4) ◽  
pp. 1777-1785 ◽  
Author(s):  
Gad Miller ◽  
Nobuhiro Suzuki ◽  
Ludmila Rizhsky ◽  
Alicia Hegie ◽  
Shai Koussevitzky ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Ascorbate Peroxidase ◽  
Plant Development ◽  
Abiotic Stresses ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Complex Mode

Effect of a complex preparation with inducers of resistance to pathogens on the infection of the potato (Solanum tuberosum L.)

2021 ◽  
Vol 66 (2) ◽  
pp. 159-168
Author(s):  
A. N. Grits ◽  
E. N. Karasiova ◽  
T. D. Makarova ◽  
K. I. Rybinskaya ◽  
A. L. Olshanikova ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Ion Exchange ◽  
Ascorbate Peroxidase ◽  
Potato Virus ◽  
Marker Gene ◽  
Reactive Oxygen ◽  
Potato Virus X ◽  
Dry Matter Content ◽  
Oxygen Species ◽  
Complex Preparation

The content of reactive oxygen species, the activity of key antioxidant enzymes ‒ ascorbate peroxidase and glutathione reductase, the level of expression of the hypersensitive response marker gene (HSR) as well as potato virus X particles content in cv. Uladar seedlings grown on an ion-exchange substrate in the presence of a complex preparation containing chitosan, Bacillus subtilis bacteria-based preparation and salicylic acid, when infected potato virus X. Accumulation of the reactive oxygen species, increase in ascorbate peroxidase activity, a lower level of HSR gene expression and a lower content of virus X particles in potato plants under such conditions are shown. An increase in both the number of potato minitubers and dry matter content in them was also registered when plants were grown on an ion-exchange substrate in the presence of a complex preparation.

Overexpression of Triticum durum TdAnn12 gene confers stress tolerance through scavenging reactive oxygen species in transgenic tobacco

2019 ◽  
Vol 46 (10) ◽  
pp. 885 ◽  
Author(s):  
Rania Ben Saad ◽  
Marwa Harbaoui ◽  
Walid Ben Romdhane ◽  
Nabil Zouari ◽  
Khong N. Giang ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Stress Tolerance ◽  
Transgenic Tobacco ◽  
Abiotic Stresses ◽  
Triticum Durum ◽  
Antioxidant Activities ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Stress Related Genes ◽  
Triticum Durum Desf

Plant annexins are proteins with multiple functions and roles in plant development and responses to abiotic stresses. We report here the functional analysis of the TdAnn12 annexin protein isolated from Triticum durum Desf. We have previously shown that TdAnn12 expression is highly induced by different abiotic stresses. In the present study, to investigate the physiological and biochemical stress-induced responses, we overexpressed TdAnn12 in tobacco. We demonstrate that transgenic tobacco plants expressing TdAnn12 exhibited enhanced tolerance to salt, osmotic stress and H2O2 at the seedling stage. Under greenhouse conditions, these plants showed tolerance to drought and salt stresses. Moreover, scavenging reactive oxygen species (ROS), higher chlorophyll content, lower lipid peroxidation levels and increased antioxidant activities (peroxidase, catalase and superoxide dismutase) were observed. Finally, accumulation of TdAnn12 in tobacco positively affects the regulation of some stress-related genes (MnSOD, APX1, CAT1, P5CS, NHX1, SOS1 and DREB1A). TdAnn12 interacts directly or indirectly with stress-related genes that could stimulate an adaptive potential to gain tolerance which is not present in non-transgenic (NT) plants. Our results clearly show that overexpression of TdAnn12 in transgenic tobacco improves stress tolerance through the removal of ROS.

scholarly journals Reactive Oxygen Species and Abiotic Stress in Plants

2020 ◽  
Vol 21 (20) ◽  
pp. 7433 ◽  
Author(s):  
Tsanko Gechev ◽  
Veselin Petrov
Keyword(s):  
Oxidative Stress ◽  
Reactive Oxygen Species ◽  
Abiotic Stress ◽  
Abiotic Stresses ◽  
Gene Networks ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Special Issue ◽  
Stress Oxidative ◽  
Acid Toxicity

Abiotic stresses cause plant growth inhibition, damage, and in the most severe cases, cell death, resulting in major crop yield losses worldwide. Many abiotic stresses lead also to oxidative stress. Recent genetic and genomics studies have revealed highly complex and integrated gene networks which are responsible for stress adaptation. Here we summarize the main findings of the papers published in the Special Issue “ROS and Abiotic Stress in Plants”, providing a global picture of the link between reactive oxygen species and various abiotic stresses such as acid toxicity, drought, heat, heavy metals, osmotic stress, oxidative stress, and salinity.

scholarly journals Reactive oxygen species in plant development

Development ◽  
2018 ◽  
Vol 145 (15) ◽  
pp. dev164376 ◽  
Author(s):  
Amna Mhamdi ◽  
Frank Van Breusegem
Keyword(s):  
Reactive Oxygen Species ◽  
Plant Development ◽  
Reactive Oxygen ◽  
Oxygen Species
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