scholarly journals Salt Compartmentation and Antioxidant Defense in Roots and Leaves of Two Non-Salt Secretor Mangroves under Salt Stress

2018 ◽  
Author(s):  
Niya Li ◽  
Xiaoyang Zhou ◽  
Ruigang Wang ◽  
Jinke Li ◽  
Cunfu Lu ◽  
...  
Keyword(s):  
Salt Stress ◽  
Antioxidant Defense

Seed-priming with H2O2 alleviates subsequent salt stress by preventing ROS production and amplifying antioxidant defense in cauliflower seeds and seedlings

2021 ◽  
Vol 288 ◽  
pp. 110360
Author(s):  
Hasna Ellouzi ◽  
Samia Oueslati ◽  
Kamel Hessini ◽  
Mokded Rabhi ◽  
Chedly Abdelly
Keyword(s):  
Salt Stress ◽  
Antioxidant Defense ◽  
Seed Priming ◽  
Ros Production

scholarly journals Supplemental Selenium and Boron Mitigate Salt-Induced Oxidative Damages in Glycine max L.

Plants ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 2224
Author(s):  
Mira Rahman ◽  
Khussboo Rahman ◽  
Khadeja Sultana Sathi ◽  
Md. Mahabub Alam ◽  
Kamrun Nahar ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Salt Stress ◽  
Antioxidant Defense ◽  
Foliar Application ◽  
Growth Parameters ◽  
Monodehydroascorbate Reductase ◽  
Ros Scavenging ◽  
H2o2 Content ◽  
Mda Content ◽  
Different Levels

The present investigation was executed with an aim to evaluate the role of exogenous selenium (Se) and boron (B) in mitigating different levels of salt stress by enhancing the reactive oxygen species (ROS) scavenging, antioxidant defense and glyoxalase systems in soybean. Plants were treated with 0, 150, 300 and 450 mM NaCl at 20 days after sowing (DAS). Foliar application of Se (50 µM Na2SeO4) and B (1 mM H3BO3) was accomplished individually and in combined (Se+B) at three-day intervals, at 16, 20, 24 and 28 DAS under non-saline and saline conditions. Salt stress adversely affected the growth parameters. In salt-treated plants, proline content and oxidative stress indicators such as malondialdehyde (MDA) content and hydrogen peroxide (H2O2) content were increased with the increment of salt concentration but the relative water content decreased. Due to salt stress catalase (CAT), monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR), glyoxalase I (Gly I) and glyoxalase II (Gly II) activity decreased. However, the activity of ascorbate peroxidase (APX), glutathione reductase (GR), glutathione peroxidase (GPX), glutathione S-transferase (GST) and peroxidase (POD) increased under salt stress. On the contrary, supplementation of Se, B and Se+B enhanced the activities of APX, MDHAR, DHAR, GR, CAT, GPX, GST, POD, Gly I and Gly II which consequently diminished the H2O2 content and MDA content under salt stress, and also improved the growth parameters. The results reflected that exogenous Se, B and Se+B enhanced the enzymatic activity of the antioxidant defense system as well as the glyoxalase systems under different levels of salt stress, ultimately alleviated the salt-induced oxidative stress, among them Se+B was more effective than a single treatment.

A rice mutant defective in antioxidant-defense system and sodium homeostasis possesses increased sensitivity to salt stress

2016 ◽  
Vol 60 (1) ◽  
pp. 86-94 ◽  
Author(s):  
K. -C. Lin ◽  
W. -S. Jwo ◽  
N. N. P. Chandrika ◽  
T. -M. Wu ◽  
M. -H. Lai ◽  
...  
Keyword(s):  
Salt Stress ◽  
Antioxidant Defense ◽  
Antioxidant Defense System ◽  
Defense System ◽  
Sodium Homeostasis ◽  
Rice Mutant ◽  
Increased Sensitivity

Influence of Salt Stress on Different Pepper Genotypes: Ion Homeostasis, Antioxidant Defense, and Secondary Metabolites

2021 ◽  
Vol 9 (1) ◽  
pp. 14-20
Author(s):  
Sebnem Kusvuran ◽  
◽  
Sevinc Kiran ◽  
Ozlem Altuntas
Keyword(s):  
Salt Stress ◽  
Secondary Metabolites ◽  
Antioxidant Defense ◽  
Ion Homeostasis

scholarly journals Exogenous Tebuconazole and Trifloxystrobin Regulates Reactive Oxygen Species Metabolism Toward Mitigating Salt-Induced Damages in Cucumber Seedling

Plants ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 428 ◽  
Author(s):  
Sayed Mohsin ◽  
Mirza Hasanuzzaman ◽  
M. Bhuyan ◽  
Khursheda Parvin ◽  
Masayuki Fujita
Keyword(s):  
Reactive Oxygen Species ◽  
Salt Stress ◽  
Antioxidant Defense ◽  
Ion Homeostasis ◽  
Reactive Oxygen ◽  
Cucumber Plant ◽  
Enzymatic Antioxidants ◽  
Oxygen Species ◽  
Exogenous Application ◽  
Antioxidant Defense Systems

The present study investigated the role of tebuconazole (TEB) and trifloxystrobin (TRI) on cucumber plants (Cucumis sativus L. cv. Tokiwa) under salt stress (60 mM NaCl). The cucumber plants were grown semi-hydroponically in a glasshouse. Plants were exposed to two different doses of fungicides (1.375 µM TEB + 0.5 µM TRI and 2.75 µM TEB + 1.0 µM TRI) solely and in combination with NaCl (60 mM) for six days. The application of salt phenotypically deteriorated the cucumber plant growth that caused yellowing of the whole plant and significantly destructed the contents of chlorophyll and carotenoids. The oxidative damage was created under salinity by increasing the contents of malondialdehyde (MDA), hydrogen peroxide (H2O2), and electrolytic leakage (EL) resulting in the disruption of the antioxidant defense system. Furthermore, in the leaves, stems, and roots of cucumber plants increased Na+ content was observed under salt stress, whereas the K+/Na+ ratio and contents of K+, Ca2+, and Mg2+ decreased. In contrast, the exogenous application of TEB and TRI reduced the contents of MDA, H2O2, and EL by improving the activities of enzymatic and non-enzymatic antioxidants. In addition, ion homeostasis was regulated by reducing Na+ uptake and enhanced K+ accumulation and the K+/Na+ ratio after application of TEB and TRI. Therefore, this study indicates that the exogenous application of TEB and TRI enhanced salt tolerance in cucumber plants by regulating reactive oxygen species production and antioxidant defense systems.

Magnetopriming regulates antioxidant defense system in soybean against salt stress

2019 ◽  
Vol 18 ◽  
pp. 101090 ◽  
Author(s):  
Sunita Kataria ◽  
Lokesh Baghel ◽  
Meeta Jain ◽  
K.N. Guruprasad
Keyword(s):  
Salt Stress ◽  
Antioxidant Defense ◽  
Antioxidant Defense System ◽  
Defense System

scholarly journals Seed Treatment with Trichoderma longibrachiatum T6 Promotes Wheat Seedling Growth under NaCl Stress Through Activating the Enzymatic and Nonenzymatic Antioxidant Defense Systems

2019 ◽  
Vol 20 (15) ◽  
pp. 3729 ◽  
Author(s):  
Shuwu Zhang ◽  
Bingliang Xu ◽  
Yantai Gan
Keyword(s):  
Salt Stress ◽  
Antioxidant Defense ◽  
Wheat Seedling ◽  
Nacl Stress ◽  
Ros Scavenging ◽  
Wheat Seedlings ◽  
Defense Systems ◽  
Antioxidant Defense Systems ◽  
Scavenging Enzymes ◽  
Different Levels

Salt stress is one of the major abiotic stresses limiting crop growth and productivity worldwide. Species of Trichoderma are widely recognized for their bio-control abilities, but little information is regarding to the ability and mechanisms of their promoting plant growth and enhancing plant tolerance to different levels of salt stress. Hence, we determined (i) the role of Trichoderma longibrachiatum T6 (TL-6) in promoting wheat (Triticum aestivum L.) seed germination and seedling growth under different levels of salt stress, and (ii) the mechanisms responsible for the enhanced tolerance of wheat to salt stress by TL-6. Wheat seeds treated with or without TL-6 were grown under different levels of salt stress in controlled environmental conditions. As such, the TL-6 treatments promoted seed germination and increased the shoot and root weights of wheat seedlings under both non-stress and salt-stress conditions. Wheat seedlings with TL-6 treatments under different levels of NaCl stress increased proline content by an average of 11%, ascorbate 15%, and glutathione 28%; and decreased the contents of malondialdehyde (MDA) by an average of 19% and hydrogen peroxide (H2O2) 13%. The TL-6 treatments induced the transcriptional level of reactive oxygen species (ROS) scavenging enzymes, leading to the increases of glutathione s-transferase (GST) by an average of 17%, glutathione peroxidase (GPX) 16%, ascorbate peroxidase (APX) 17%, glutathione reductase (GR) 18%, dehydroascorbate reductase (DHAR) 5%. Our results indicate that the beneficial strain of TL-6 effectively scavenged ROS under NaCl stress through modulating the activity of ROS scavenging enzymes, regulating the transcriptional levels of ROS scavenging enzyme gene expression, and enhancing the nonenzymatic antioxidants in wheat seedling in response to salt stress. Our present study provides a new insight into the mechanisms of TL-6 can activate the enzymatic and nonenzymatic antioxidant defense systems and enhance wheat seedling tolerance to different levels of salt stress at physiological, biochemical and molecular levels.

scholarly journals Tebuconazole and trifloxystrobin regulate the physiology, antioxidant defense and methylglyoxal detoxification systems in conferring salt stress tolerance in Triticum aestivum L.

2020 ◽  
Vol 26 (6) ◽  
pp. 1139-1154
Author(s):  
Sayed Mohammad Mohsin ◽  
Mirza Hasanuzzaman ◽  
Kamrun Nahar ◽  
Md. Shahadat Hossain ◽  
M. H. M. Borhannuddin Bhuyan ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Salt Stress ◽  
Stress Tolerance ◽  
Antioxidant Defense ◽  
Triticum Aestivum L ◽  
Salt Stress Tolerance ◽  
Detoxification Systems

scholarly journals Manganese-induced salt stress tolerance in rice seedlings: regulation of ion homeostasis, antioxidant defense and glyoxalase systems

2016 ◽  
Vol 22 (3) ◽  
pp. 291-306 ◽  
Author(s):  
Anisur Rahman ◽  
Md. Shahadat Hossain ◽  
Jubayer-Al Mahmud ◽  
Kamrun Nahar ◽  
Mirza Hasanuzzaman ◽  
...  
Keyword(s):  
Salt Stress ◽  
Stress Tolerance ◽  
Antioxidant Defense ◽  
Ion Homeostasis ◽  
Rice Seedlings ◽  
Salt Stress Tolerance

Roles of exogenous glutathione in antioxidant defense system and methylglyoxal detoxification during salt stress in mung bean

2015 ◽  
Vol 59 (4) ◽  
pp. 745-756 ◽  
Author(s):  
K. Nahar ◽  
M. Hasanuzzaman ◽  
M. M. Alam ◽  
M. Fujita
Keyword(s):  
Salt Stress ◽  
Mung Bean ◽  
Antioxidant Defense ◽  
Antioxidant Defense System ◽  
Defense System
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