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 Reactive oxygen species signaling and stomatal movement: Current updates and future perspectives

Redox Biology ◽  
2017 ◽  
Vol 11 ◽  
pp. 213-218 ◽  
Author(s):  
Rachana Singh ◽  
Parul Parihar ◽  
Samiksha Singh ◽  
Rohit Kumar Mishra ◽  
Vijay Pratap Singh ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Reactive Oxygen ◽  
Stomatal Movement ◽  
Oxygen Species ◽  
Future Perspectives ◽  
Reactive Oxygen Species Signaling

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.

scholarly journals Transcriptomic Footprints Disclose Specificity of Reactive Oxygen Species Signaling in Arabidopsis

2006 ◽  
Vol 141 (2) ◽  
pp. 436-445 ◽  
Author(s):  
Ilya Gadjev ◽  
Sandy Vanderauwera ◽  
Tsanko S. Gechev ◽  
Christophe Laloi ◽  
Ivan N. Minkov ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Reactive Oxygen Species Signaling

Reactive Oxygen Species Signaling and Seed Germination

2017 ◽  
pp. 291-306 ◽  
Author(s):  
Prabhakaran Soundararajan ◽  
Abinaya Manivannan ◽  
Byoung Ryong Jeong
Keyword(s):  
Reactive Oxygen Species ◽  
Seed Germination ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Reactive Oxygen Species Signaling

scholarly journals Nitric Oxide Enhances Cytotoxicity of Lead by Modulating the Generation of Reactive Oxygen Species and Is Involved in the Regulation of Pb2+ and Ca2+ Fluxes in Tobacco BY-2 Cells

Plants ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 403 ◽  
Author(s):  
Jiaye Wu ◽  
Yue Zhang ◽  
Ruizhi Hao ◽  
Yuan Cao ◽  
Xiaoyi Shan ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Reactive Oxygen Species ◽  
Heavy Metal ◽  
Cell Death ◽  
Calcium Homeostasis ◽  
Reactive Oxygen ◽  
Ros Generation ◽  
Plant Responses ◽  
Oxygen Species ◽  
In Cells

Lead is a heavy metal known to be toxic to both animals and plants. Nitric oxide (NO) was reported to participate in plant responses to different heavy metal stresses. In this study, we analyzed the function of exogenous and endogenous NO in Pb-induced toxicity in tobacco BY-2 cells, focusing on the role of NO in the generation of reactive oxygen species (ROS) as well as Pb2+ and Ca2+ fluxes using non-invasive micro-test technology (NMT). Pb treatment induced BY-2 cell death and rapid NO and ROS generation, while NO burst occurred earlier than ROS accumulation. The elimination of NO by 2-4-carboxyphenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (cPTIO) resulted in a decrease of ROS, and the supplementation of NO by sodium nitroprusside (SNP) caused an increased accumulation of ROS. Furthermore, the addition of exogenous NO stimulated Pb2+ influx, thus promoting Pb uptake in cells and aggravating Pb-induced toxicity in cells, whereas the removal of endogenous NO produced the opposite effect. Moreover, we also found that both exogenous and endogenous NO enhanced Pb-induced Ca2+ effluxes and calcium homeostasis disorder. These results suggest that exogenous and endogenous NO played a critical regulatory role in BY-2 cell death induced by Pb stress by promoting Pb2+ influx and accumulation and disturbing calcium homeostasis.

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