Exogenous application of liquiritin alleviated salt stress and improved growth of Chinese kale plants

2021 ◽  
pp. 110762
Author(s):  
Waheed Akram ◽  
Nasim Ahmad Yasin ◽  
Anis Ali Shah ◽  
Waheed Ullah Khan ◽  
Guihua Li ◽  
...  
Keyword(s):  
Salt Stress ◽  
Exogenous Application ◽  
Chinese Kale

Exogenous application of salicylic acid enhances salt stress tolerance in lemongrass (Cymbopogon flexuosus Steud. Wats)

2021 ◽  
Vol 54 (2) ◽  
Author(s):  
Zeeshan Rehman ◽  
Abrar Hussain ◽  
Shanzay Saleem ◽  
Sheza Ayaz Khilji ◽  
Zahoor Ahmad Sajid
Keyword(s):  
Salicylic Acid ◽  
Salt Stress ◽  
Stress Tolerance ◽  
Salt Stress Tolerance ◽  
Exogenous Application ◽  
Cymbopogon Flexuosus

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.

scholarly journals Melatonin-Mediated Regulation of Growth and Antioxidant Capacity in Salt-Tolerant Naked Oat under Salt Stress

2019 ◽  
Vol 20 (5) ◽  
pp. 1176 ◽  
Author(s):  
Wenying Gao ◽  
Zheng Feng ◽  
Qingqing Bai ◽  
Jinjin He ◽  
Yingjuan Wang
Keyword(s):  
Salt Stress ◽  
Antioxidant Capacity ◽  
Stress Responses ◽  
Nacl Stress ◽  
Mitogen Activated Protein Kinase ◽  
Naked Oat ◽  
Exogenous Application ◽  
Transcription Factor Genes ◽  
Mitogen Activated Protein

Melatonin (MT; N-acetyl-5-methoxytryptamine) is a pleiotropic signaling molecule that has been demonstrated to play an important role in plant growth, development, and regulation of environmental stress responses. Studies have been conducted on the role of the exogenous application of MT in a few species, but the potential mechanisms of MT-mediated stress tolerance under salt stress are still largely unknown. In this study, naked oat seedlings under salt stress (150 mM NaCl) were pretreated with two different concentrations of MT (50 and 100 μM), and the effects of MT on the growth and antioxidant capacity of naked oat seedlings were analyzed to explore the regulatory effect of MT on salt tolerance. The results showed that pretreating with different concentrations of MT promoted the growth of seedlings in response to 150 mM NaCl. Different concentrations of MT reduced hydrogen peroxide, superoxide anion, and malondialdehyde contents. The exogenous application of MT also increased superoxide dismutase, peroxidase, catalase, and ascorbate peroxide activities. Chlorophyll content, leaf area, leaf volume, and proline increased in the leaves of naked oat seedlings under 150 mM NaCl stress. MT upregulated the expression levels of the lipid peroxidase genes lipoxygenase and peroxygenase, a chlorophyll biosynthase gene (ChlG), the mitogen-activated protein kinase genes Asmap1 and Aspk11, and the transcription factor genes (except DREB2), NAC, WRKY1, WRKY3, and MYB in salt-exposed MT-pretreated seedlings when compared with seedlings exposed to salt stress alone. These results demonstrate an important role of MT in the relief of salt stress and, therefore, provide a reference for managing salinity in naked oat.

scholarly journals Modulation of ion uptake in tomato (Lycopersicon esculentum L.) plants with exogenous application of calcium under salt stress condition

Poljoprivreda ◽  
2016 ◽  
Vol 22 (2) ◽  
pp. 40-49 ◽  
Author(s):  
Khursheda Parvin ◽  
◽  
Kamal Uddin Ahamed ◽  
Mohammad Mahbub Islam ◽  
Nazmul Haque
Keyword(s):  
Salt Stress ◽  
Lycopersicon Esculentum ◽  
Stress Condition ◽  
Ion Uptake ◽  
Salt Stress Condition ◽  
Exogenous Application
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