scholarly journals Influence of methyure and ivin preparations on vacuolar Ca2+/H+ antiporter of Zea mays L. root cells under salt stress

Author(s):  
M. Rudnytska ◽  
T. Palladina

Because calcium plays an important role in the regulation of growth and development processes in plant organism as well as the formation of a specific physiological response to the action of various stressors, acting as a secondary messenger, the purpose of the study was to study the effect of heterocyclic drugs Methyure and Ivin of root cells Zea mays L. under salt stress. The roots of maize hybrids of Ostrich CB were exposed in the presence of 0.1 M sodium chloride for 1 and 10 days. Vacuolar membranes were obtained from corn root homogenate by centrifugation in a sucrose step gradient. The activity of the Са2+/Н+-antiporter was evaluated by the proton release from vesicles by adding calcium ions to the incubation medium, expressing ∆F% per mg of protein per minute. Under control conditions, heterocyclic drugs Methyure and Ivin do not affect the activity of Са2+/Н+-antiporter in the vacuolar membranes of corn roots and do not significantly contribute to the development of stress response in plants. At the same time, under the conditions of salt exposure of maize seedlings the opposite directed effect of Methyure and Ivin on the activity of Са2+/Н+-antiporter in the membranes of root vacuoles was revealed. Thus, under prolonged salt exposure, Methyure increases the activity of Са2+/Н+-antiporter in the vacuolar membrane of the root and, on the contrary, Ivin reduces it, which may be due to the differences in chemical composition of these heterocyclic drugs. The results, that were obtained, indicate that the salt-protective effect of the heterocyclic drug Methyure may also be due to its effect on the functional activity of the Са2+/Н+-antiporter in the vacuolar membrane of corn root.

2011 ◽  
Vol 198 (1) ◽  
pp. 46-56 ◽  
Author(s):  
M. Shahzad ◽  
K. Witzel ◽  
C. Zörb ◽  
K. H. Mühling
Keyword(s):  
Zea Mays ◽  

2015 ◽  
Vol 67 (3) ◽  
pp. 993-1000 ◽  
Author(s):  
Lydia Shtereva ◽  
Roumiana Vassilevska-Ivanova ◽  
Tanya Karceva

An experiment was carried out hydroponically under laboratory conditions to investigate the effect of salt stress on several physiological and biochemical parameters of three sweet corn (Zea mays L. var. saccharata) genotypes: lines 6-13, C-6 (pollen source) and their heterotic F1 hybrid ?Zaharina?. The degree of salinity tolerance among these genotypes was evaluated at three different sodium chloride (NaCl) concentrations: 0 mM, 100 mM, 125 mM and 150 mM. Seed germination, plant growth and biochemical stress determining parameters such as malondialdehyde (MDA), proline content and hydrogen peroxide (H2O2) levels were compared between seedlings of lines and hybrid. The obtained results indicated that both lines and hybrid have similar responses at different salinity levels for all examined traits. All the seedlings? growth parameters, such as germination percentage, root length, shoot length, root and shoot fresh and dry weight, decreased with increasing salinity level. MDA, proline and H2O2 increased at different saline conditions in comparison to the control. Based on the results, of the three genotypes examined, the hybrid Zaharina, followed by line C-6, was more salt-sensitive than line 6-13 in salt stress condition.


Caryologia ◽  
2018 ◽  
Vol 71 (4) ◽  
pp. 331-340
Author(s):  
Xuechuan He ◽  
Yonghong Xie ◽  
Yinchuan Zhao ◽  
Xinyan Gao ◽  
Lulu Yu ◽  
...  

2015 ◽  
Vol 105 (1) ◽  
pp. 85-94 ◽  
Author(s):  
Sali ALIU ◽  
Imer RUSINOVCI ◽  
Shukri FETAHU ◽  
Bekim GASHI ◽  
Emilija SIMEONOVSKA ◽  
...  

2014 ◽  
Vol 67 (11) ◽  
pp. 739-743 ◽  
Author(s):  
Yue Shen ◽  
Yuejing Zhang ◽  
Chongxi Liu ◽  
Xiangjing Wang ◽  
Junwei Zhao ◽  
...  

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