Effects of salicylic acid pre-treatment on cadmium and/or UV-B stress in soybean seedlings

2014 ◽  
Vol 58 (1) ◽  
pp. 195-199 ◽  
Author(s):  
X. M. Li ◽  
L. J. Ma ◽  
N. Bu ◽  
Y. Y. Li ◽  
L. H. Zhang
2019 ◽  
Vol 101 (3) ◽  
pp. 315-323 ◽  
Author(s):  
George Bawa ◽  
Lingyang Feng ◽  
Li Yan ◽  
Yongli Du ◽  
Jing Shang ◽  
...  

2021 ◽  
Vol 13 (2) ◽  
pp. 10917
Author(s):  
Venu SREELAKSHMY ◽  
Gunasekar ANBARASI ◽  
Benaltraja VISHNUPRIYA

Agricultural crop production around the world is adversely affected by excess salt accumulation in the soil. Plants initiate broad range of signal transduction pathways to respond any stress. Salicylic acid (SA) is an endogenous plant growth regulator that acts as a signal molecule to modulate plant response by reducing the effects of abiotic stress on plants. The main objective of this study is to examine whether exogenous salicylic acid pre-treatment may reduce the adverse effects of salt stress and enhance salt tolerance in Solanum lycopersicum. For this experiment, two weeks old seedlings were subjected to salt stress by adding salt water (100 mM NaCl) for three days with or without salicylic acid pre-treatment. After salt stress exposure plant leaves were harvested and the various measures were recorded. Results of this study exhibited that salicylic acid pre-treatment mitigates various advers effects of salt stress on plant growth by stimulating plant biomass, water relations, protein content, chlorophyll pigment, and inorganic osmolytes accumulation. Simultaneously, an increase in activity of antioxidant enzymes of SOD, CAT and POX were also triggered.  This current study suggested that pre-treating of Solanum lycopersicum with salicylic acid attenuates the depressive effect of salinity by accelerating the osmolyte accumulation and triggering activity of free radical scavenging enzymes.


Author(s):  
O. Vasylyshyna ◽  

Currently, the problem of environmental pollution has become important, so the development of biodegradable films based on polysaccharide coatings, which could completely replace plastic is relevant. The purpose of research conducted with cherries of the varieties Alpha and Memory Artemenko, grown at the research station of pomology named after LP Simirenko IS NAAS − to establish the effect of treatment (100 mg/l) with a solution of salicylic acid; (1 %) chitosan with (100 mg/l) salicylic acid; (1 %) chitosan; on physical indicators: microstructure, density and weight loss of cherry fruits during storage at a temperature of 1 ± 0.5°C and relative humidity of 95±1 %. As a result of the conducted researches it was established that pre-treatment of cherry fruits with 100 mg/l with salicylic acid and 1 % chitosan affected the microstructure of mesocarp. The density of cherries of the varieties Alpha and Memory Artemenko, after storage decreased by 40.8 % and 45.2 %. In fruits treated with salicylic acid, the losses were 29.2 and 31.4 %, and 1 % solution of chitosan with salicylic acid −18,2 % and 12,6 %. Fruits pre-treated with a solution of salicylic acid have a lower weight loss of 3,5−3,4 %, and with the combined action of salicylic acid and chitosan – 2,7−3,0 %. The prospect of further research is to determine the physical changes of cherry fruits of different varieties by pre-treatment with a solution of salicylic acid and chitosan.


Author(s):  
Marin SOARE ◽  
Paula IANCU ◽  
Elena BONCIU ◽  
Ovidiu PĂNIȚĂ

The present paper analyses the effect of pre-treatment with salicylic acid (SA) on germination and the growth of winter wheat seedlings in water stress conditions induced by polyetylene glycol (PEG). A two-factor experiment was conducted in a completely randomized projection. The first factor (A) included three levels: a1- distilled water - control; a2 - 0.25 mM SA; a3 - 0.75 mM SA and the second factor (B) included three levels: b1- distilled water; b2 - 15% PEG and b3 - 25% PEG. Biological material was represented by a DH winter wheat line. It were made observations on germination percentage (GP), root length (RL), cotyledons length (CL), seedling fresh weight (SFW) and vigor index (VI). After the analysis of the obtained results it can appreciate that the 25% PEG concentration played the main role for the significant decrease of the germination percentage (GP) and vigor index (VI). Also, seeds pre-treatment with 0.75 mM SA could be a way to improve germination characteristics in drought conditions.


2016 ◽  
Vol 46 (10) ◽  
pp. 1743-1749 ◽  
Author(s):  
Jin Feng Chen ◽  
Chan Jiao

ABSTRACT: As a gas signaling molecule, endogenous hydrogen sulfide (H2S) plays a crucial role in the plant stress response. However, the role of H2S in the response to organic pollutants specifically has not been studied. Here, the effects of H2S addition on soybean (Glycine max) seedlings tolerance of 1,4-dichlorobenzene (1,4-DCB) were investigated. Under 1,4-DCB stress, the growth of soybean seedlings roots and stems was inhibited, while L-/D-cysteine desulfhydrase (LCD/DCD) activity was induced and endogenous H2S increased. When applied jointly with sodium hydrosulfide (NaHS), a H2S donor, root growth inhibition was effectively alleviated. Pre-treatment of seedlings with 0.4mmol L-1 NaHS reduced the malondialdehyde (MDA) and reactived oxygen species (ROS) content, mitigating root cell toxicity significantly. Further experiments confirmed that NaHS enhanced soybean seedlings peroxidase (POD) and superoxide dismutase (SOD) enzyme activities. In contrast, these effects were reversed by hypotaurine (HT), a H2S scavenger. Therefore, H2S alleviated 1,4-DCB toxicity in soybean seedlings by regulating antioxidant enzyme activity to reduce cell oxidative damage.


Plant Science ◽  
2005 ◽  
Vol 168 (2) ◽  
pp. 511-517 ◽  
Author(s):  
Gordana Drazic ◽  
Nevena Mihailovic

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