Drought Stress Induced Reactive Oxygen Species and Anti-oxidants in Plants

2011 ◽  
pp. 131-147 ◽  
Author(s):  
S. M. Impa ◽  
S. Nadaradjan ◽  
S. V. K. Jagadish
Keyword(s):  
Reactive Oxygen Species ◽  
Drought Stress ◽  
Reactive Oxygen ◽  
Oxygen Species

scholarly journals Drought stress and reactive oxygen species

2008 ◽  
Vol 3 (3) ◽  
pp. 156-165 ◽  
Author(s):  
Maria Helena Cruz de Carvalho
Keyword(s):  
Reactive Oxygen Species ◽  
Drought Stress ◽  
Reactive Oxygen ◽  
Oxygen Species

scholarly journals Reactive oxygen species signaling and stomatal movement in plant responses to drought stress and pathogen attack

2018 ◽  
Vol 60 (9) ◽  
pp. 805-826 ◽  
Author(s):  
Junsheng Qi ◽  
Chun-Peng Song ◽  
Baoshan Wang ◽  
Jianmin Zhou ◽  
Jaakko Kangasjärvi ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Drought Stress ◽  
Reactive Oxygen ◽  
Plant Responses ◽  
Stomatal Movement ◽  
Oxygen Species ◽  
Pathogen Attack ◽  
Reactive Oxygen Species Signaling

scholarly journals Overexpression of Banana ATG8f Modulates Drought Stress Resistance in Arabidopsis

Biomolecules ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 814 ◽  
Author(s):  
Bing Li ◽  
Guoyin Liu ◽  
Yuqi Wang ◽  
Yunxie Wei ◽  
Haitao Shi
Keyword(s):  
Reactive Oxygen Species ◽  
Abscisic Acid ◽  
Drought Stress ◽  
Stress Resistance ◽  
Reactive Oxygen ◽  
Underlying Mechanism ◽  
Oxygen Species ◽  
Abscisic Acid Biosynthesis ◽  
Drought Stress Resistance ◽  
The One

Autophagy is essential for plant growth, development, and stress resistance. However, the involvement of banana autophagy-related genes in drought stress response and the underlying mechanism remain elusive. In this study, we found that the transcripts of 10 banana ATG8s responded to drought stress in different ways, and MaATG8f with the highest transcript in response to drought stress among them was chosen for functional analysis. Overexpression of MaATG8f improved drought stress resistance in Arabidopsis, with lower malonaldehyde level and higher level of assimilation rate. On the one hand, overexpression of MaATG8f activated the activities of superoxide dismutase, catalase, and peroxidase under drought stress conditions, so as to regulate reactive oxygen species accumulation. On the other hand, MaATG8f-overexpressing lines exhibited higher endogenous abscisic acid (ABA) level and more sensitivity to abscisic acid. Notably, the autophagosomes as visualized by CaMV35S::GFP–MaATG8f was activated after ABA treatment. Taken together, overexpression of MaATG8f positively regulated plant drought stress resistance through modulating reactive oxygen species metabolism, abscisic acid biosynthesis, and autophagic activity.

Dynamic responses of photosynthesis and the antioxidant system during a drought and rehydration cycle in peanut plants

2016 ◽  
Vol 43 (4) ◽  
pp. 337 ◽  
Author(s):  
Ana Furlan ◽  
Eliana Bianucci ◽  
María del Carmen Tordable ◽  
Aleysia Kleinert ◽  
Alexander Valentine ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Drought Stress ◽  
Antioxidant System ◽  
Stress Responses ◽  
Reactive Oxygen ◽  
Dynamic Responses ◽  
Physiological Status ◽  
Plant Responses ◽  
Oxygen Species ◽  
Dynamic Regulation

Drought stress is one of the most important environmental factors that adversely affect the productivity and quality of crops. Most studies focus on elucidating plant responses to this stress but the reversibility of these effects is less known. The aim of this work was to evaluate whether drought-stressed peanut (Arachis hypogaea L.) plants were capable of recovering their metabolism upon rehydration, with a focus on their antioxidant system. Peanut plants in the flowering phase (30 days after sowing) were exposed to drought stress by withholding irrigation during 14 days and subsequent rehydration during 3 days. Under these conditions, physiological status indicators, reactive oxygen species production and antioxidant system activity were evaluated. Under drought stress, the stomatal conductance, photosynthetic quantum yield and 13C : 12C ratio of the peanut plants were negatively affected, and also they accumulated reactive oxygen species. The antioxidant system of peanut plants showed increases in superoxide dismutase-, ascorbate peroxidase- and glutathione reductase-specific activities, as well as the total ascorbate content. All of these responses were reversed upon rehydration at 3 days. The efficient and dynamic regulation of variables related to photosynthesis and the antioxidant system during a drought and rehydration cycle in peanut plants was demonstrated. It is suggested that the activation of the antioxidant system could mediate the signalling of drought stress responses that enable the plant to survive and recover completely within 3 days of rehydration.

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