scholarly journals Exogenous application of rutin and gallic acid regulate antioxidants and alleviate reactive oxygen generation in Oryza sativa L.

2017 ◽  
Vol 23 (2) ◽  
pp. 301-309 ◽  
Author(s):  
Akanksha Singh ◽  
Rupali Gupta ◽  
Rakesh Pandey
Keyword(s):  
Oryza Sativa ◽  
Gallic Acid ◽  
Oryza Sativa L ◽  
Reactive Oxygen ◽  
Oxygen Generation ◽  
Exogenous Application

scholarly journals Reactive Oxygen Species (ROS) Metabolism and Nitric Oxide (NO) Content in Roots and Shoots of Rice (Oryza sativa L.) Plants under Arsenic-Induced Stress

Agronomy ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1014 ◽  
Author(s):  
Ernestina Solórzano ◽  
Francisco J. Corpas ◽  
Salvador González-Gordo ◽  
José M. Palma
Keyword(s):  
Oxidative Stress ◽  
Nitric Oxide ◽  
Reactive Oxygen Species ◽  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Antioxidative Systems ◽  
Ros Metabolism ◽  
As Stress

Arsenic (As) is a highly toxic metalloid for all forms of life including plants. Rice is the main food source for different countries worldwide, although it can take up high amounts of As in comparison with other crops, showing toxic profiles such as decreases in plant growth and yield. The induction of oxidative stress is the main process underlying arsenic toxicity in plants, including rice, due to an alteration of the reactive oxygen species (ROS) metabolism. The aim of this work was to gain better knowledge on how the ROS metabolism and its interaction with nitric oxide (NO) operate under As stress conditions in rice plants. Thus, physiological and ROS-related biochemical parameters in roots and shoots from rice (Oryza sativa L.) were studied under 50 μM arsenate (AsV) stress, and the involvement of the main antioxidative systems and NO in the response of plants to those conditions was investigated. A decrease of 51% in root length and 27% in plant biomass was observed with 50 μM AsV treatment, as compared to control plants. The results of the activity of superoxide dismutase (SOD) isozymes, catalase, peroxidase (POD: total and isoenzymatic), and the enzymes of the ascorbate–glutathione cycle, besides the ascorbate and glutathione contents, showed that As accumulation provoked an overall significant increase of most of them, but with different profiles depending on the plant organ, either root or shoot. Among the seven identified POD isozymes, the induction of the POD-3 in shoots under As stress could help to maintain the hydrogen peroxide (H2O2) redox homeostasis and compensate the loss of the ascorbate peroxidase (APX) activity in both roots and shoots. Lipid peroxidation was slightly increased in roots and shoots from As-treated plants. The H2O2 and NO contents were enhanced in roots and shoots against arsenic stress. In spite of the increase of most antioxidative systems, a mild oxidative stress situation appears to be consolidated overall, since the growth parameters and those from the oxidative damage could not be totally counteracted. In these conditions, the higher levels of H2O2 and NO suggest that signaling events are simultaneously occurring in the whole plant.

Reactive oxygen species induced by heat stress during grain filling of rice ( Oryza sativa L.) are involved in occurrence of grain chalkiness

2017 ◽  
Vol 216 ◽  
pp. 52-57 ◽  
Author(s):  
Chetphilin Suriyasak ◽  
Keisuke Harano ◽  
Koichiro Tanamachi ◽  
Kazuhiro Matsuo ◽  
Aina Tamada ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Oryza Sativa ◽  
Heat Stress ◽  
Oryza Sativa L ◽  
Reactive Oxygen ◽  
Grain Filling ◽  
Oxygen Species ◽  
Grain Chalkiness

Hygromycin B-induced cell death is partly mediated by reactive oxygen species in rice (Oryza sativa L.)

2015 ◽  
Vol 89 (6) ◽  
pp. 577-588 ◽  
Author(s):  
Hui-Min Oung ◽  
Ke-Chun Lin ◽  
Tsung-Meng Wu ◽  
Nulu Naga Prafulla Chandrika ◽  
Chwan-Yang Hong
Keyword(s):  
Reactive Oxygen Species ◽  
Cell Death ◽  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Reactive Oxygen ◽  
Hygromycin B ◽  
Oxygen Species

scholarly journals Improving salinity tolerance in transplanted aman rice (Oryza sativa L.) by exogenous application of proline

2019 ◽  
Vol 17 (2) ◽  
pp. 194-199
Author(s):  
Noor -Us- Sane ◽  
Dhiman Bhusan ◽  
Papon Kumar Deb Nath ◽  
Yoshiyuki Murata ◽  
Md. Anamul Hoque
Keyword(s):  
Oryza Sativa ◽  
Nutrient Uptake ◽  
Oryza Sativa L ◽  
Seedling Stage ◽  
Growth And Yield ◽  
Yield Potential ◽  
Vegetative Stage ◽  
Silty Clay ◽  
Exogenous Application ◽  
Experimental Plots

Salinity is the major factor reducing crop yield in coastal areas of Bangladesh. Proline (Pro) application with suitable crop varieties having higher yield potential could contribute to the improvement of crop production in saline areas. The main objective of this study was to investigate the mitigation of adverse effects of salinity in aman rice by exogenously applied Pro. The experiment was carried out at the farmer’s field of Batiaghata, Khulna. Characteristically, the soil was silty clay loam having pH 6.7, EC 4.6 dS m–1, CEC 23 meq/100 g soil, organic matter 0.71%. Rice (Oryza sativa L.) variety BR23 was used as plant material. The experiment was laid out in a randomized complete block design with three replications. There were different treatment combinations namely control (no Pro), 25 mM Pro at seedling stage, 25 mM Pro at vegetative stage, 25 mM Pro at seedling and vegetative stages, 50 mM Pro at seedling stage, 50 mM Pro at vegetative stage, 50 mM Pro at seedling and vegetative stages, 100 mM Pro at seedling stage, 100 mM Pro at vegetative stages, and 100 mM Pro at seedling and vegetative stages. Recommended doses of N, P, K, S and Zn fertilizers were applied to the all experimental plots. Thirty-day-old seedlings were transplanted in the experimental plots. Proline solutions were sprayed over plant leaves with the help of sprayer as per treatments. Salinity caused significant reductions in growth and yield of BR23 by decreasing plant height, number of effective tillers, panicle length, filled grains panicle-1 and 1000-grain weight. On the other hand, exogenous application of Pro showed a significant increase in growth and yield of BR23 under saline conditions. Results also revealed that growth and yield of rice did not increase proportionally with the increasing doses of Pro. Proline application resulted in significant increases in K+/Na+ and nutrient uptake by rice under salinity. The present study suggests that exogenous application of Pro confers tolerance to salinity in aman rice by increasing K+/Na+ ratio and nutrient uptake. J. Bangladesh Agril. Univ. 17(2): 194–199, June 2019

Detection of Reactive Oxygen Species in Oryza sativa L. (Rice)

BIO-PROTOCOL ◽  
2016 ◽  
Vol 6 (24) ◽  
Author(s):  
Navdeep Kaur ◽  
Isha Sharma ◽  
Kamal Kirat ◽  
Pratap Pati
Keyword(s):  
Reactive Oxygen Species ◽  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Reactive Oxygen ◽  
Oxygen Species
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