Elevated CO2 improves antioxidant capacity, ion homeostasis, and polyamine metabolism in tomato seedlings under Ca(NO3)2-induced salt stress

2020 ◽  
Vol 273 ◽  
pp. 109644 ◽  
Author(s):  
Yi Zhang ◽  
Qi Yao ◽  
Yu Shi ◽  
Xufen Li ◽  
Leiping Hou ◽  
...  
Keyword(s):  
Salt Stress ◽  
Antioxidant Capacity ◽  
Elevated Co2 ◽  
Ion Homeostasis ◽  
Polyamine Metabolism ◽  
Tomato Seedlings

scholarly journals Melatonin: A Small Molecule but Important for Salt Stress Tolerance in Plants

2019 ◽  
Vol 20 (3) ◽  
pp. 709 ◽  
Author(s):  
Haoshuang Zhan ◽  
Xiaojun Nie ◽  
Ting Zhang ◽  
Shuang Li ◽  
Xiaoyu Wang ◽  
...  
Keyword(s):  
Salt Stress ◽  
Stress Tolerance ◽  
Stress Responses ◽  
Ion Homeostasis ◽  
Free Radical Scavenger ◽  
Limiting Factors ◽  
Polyamine Metabolism ◽  
Antioxidant Systems ◽  
Radical Scavenger ◽  
Salt Stress Tolerance

Salt stress is one of the most serious limiting factors in worldwide agricultural production, resulting in huge annual yield loss. Since 1995, melatonin (N-acetyl-5-methoxytryptamine)—an ancient multi-functional molecule in eukaryotes and prokaryotes—has been extensively validated as a regulator of plant growth and development, as well as various stress responses, especially its crucial role in plant salt tolerance. Salt stress and exogenous melatonin lead to an increase in endogenous melatonin levels, partly via the phyto-melatonin receptor CAND2/PMTR1. Melatonin plays important roles, as a free radical scavenger and antioxidant, in the improvement of antioxidant systems under salt stress. These functions improve photosynthesis, ion homeostasis, and activate a series of downstream signals, such as hormones, nitric oxide (NO) and polyamine metabolism. Melatonin also regulates gene expression responses to salt stress. In this study, we review recent literature and summarize the regulatory roles and signaling networks involving melatonin in response to salt stress in plants. We also discuss genes and gene families involved in the melatonin-mediated salt stress tolerance.

Lettuce production and antioxidant capacity are differentially modified by salt stress and light intensity under ambient and elevated CO2

2013 ◽  
Vol 170 (17) ◽  
pp. 1517-1525 ◽  
Author(s):  
Usue Pérez-López ◽  
Jon Miranda-Apodaca ◽  
Alberto Muñoz-Rueda ◽  
Amaia Mena-Petite
Keyword(s):  
Salt Stress ◽  
Light Intensity ◽  
Antioxidant Capacity ◽  
Elevated Co2

Exogenous application of 24-epibrassinosteroid mitigates NaCl toxicity in flax by modifying free amino acids profile and antioxidant defence system

2020 ◽  
Vol 47 (6) ◽  
pp. 565 ◽  
Author(s):  
Leila Amraee ◽  
Fatemeh Rahmani ◽  
Babak Abdollahi Mandoulakani
Keyword(s):  
Amino Acids ◽  
Antioxidant Enzymes ◽  
Salt Stress ◽  
Antioxidant Capacity ◽  
Free Amino ◽  
Ion Homeostasis ◽  
Seed Priming ◽  
Antioxidant Response ◽  
Salinity Treatment ◽  
Antioxidant Defence System

In the present study, we investigated the ameliorative effects of 24-epibrassinosteroid (24-epiBL) on antioxidant response and ion homeostasis in two NaCl-stressed Linum usitatissimum L. (flax) cultivars differing in salt tolerance. The content and profile of amino acids were also studied in the tolerant cultivar. Salt stress differently altered the activity of antioxidant enzymes, phenol and flavonoid contents, total antioxidant capacity and ion homeostasis in both cultivars, whereas H2O2 and malondialdehyde (MDA) contents were induced only in the TN-97-95 cultivar. Free amino acid concentrations showed variable patterns under salinity conditions compared with the control plants. 24-epiBL decreased the soluble protein content in NaCl-treated plants and also decreased stimulatory effects of salinity on the production and accumulation of phenol and flavonoid contents and antioxidant capacity with altered ion (Na+, K+, and Cl–) contents. The 24-epiBL reduced the chlorophylls (a, b) and carotenoid contents in salt-treated TN-97-95 cultivar while enhanced the activity of antioxidant enzymes and declined the H2O2 content and lipid peroxidation in both NaCl-stressed cultivars. The profile and content of amino acids were significantly changed by 24-epiBL application under salinity treatment. In summary, our findings demonstrate that 24-epiBL seed priming mitigates the deleterious effects of salt stress in flax plants.

scholarly journals Engineered BcZAT12 gene mitigates salt stress in tomato seedlings

2021 ◽  
Vol 27 (3) ◽  
pp. 535-541
Author(s):  
Avinash Chandra Rai ◽  
Ashutosh Rai ◽  
Kavita Shah ◽  
Major Singh
Keyword(s):  
Salt Stress ◽  
Tomato Seedlings

Ion homeostasis during salt stress in plants

2001 ◽  
Vol 13 (4) ◽  
pp. 399-404 ◽  
Author(s):  
Ramón Serrano ◽  
Alonso Rodriguez-Navarro
Keyword(s):  
Salt Stress ◽  
Ion Homeostasis
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