scholarly journals Effects of methyl jasmonate on growth, antioxidants, and carbon and nitrogen metabolism of Glycyrrhiza uralensis under salt stress

2019 ◽  
Vol 63 (1) ◽  
pp. 89-96 ◽  
Author(s):  
X. Yu ◽  
P. Fei ◽  
Z. Xie ◽  
W. Zhang ◽  
Q. Zhao ◽  
...  
2019 ◽  
Vol 62 (6) ◽  
pp. 387-399 ◽  
Author(s):  
Gaochang Cui ◽  
Yu Zhang ◽  
Wenjin Zhang ◽  
Duoyong Lang ◽  
Xiaojia Zhang ◽  
...  

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jiajia Cui ◽  
Enhe Zhang ◽  
Xinhui Zhang ◽  
Qi Wang

AbstractSalt stress is one of the key factors that limits the cultivation of Glycyrrhiza uralensis Fisch. (G. uralensis) in the northern part of China. In this study, three salt treatments (including 21, 42 and 63 ds/m NaCl/kg dry soil) and four Si (silicon) concentrations (including 0, 1.4, 2.8 and 4.2 ds/m SiO2/kg K2SiO3 in dry soil) were tested using G. uralensis as the plant material in a pot experiment with three replications. The results showed that the application of various concentrations of Si increased sucrose synthetase (SS), sucrose phosphate synthetase (SPS) and glutamine synthetase (GS), as well as nitrate reductase (NR) activities, and promoted carbon and nitrogen metabolism. Si application also increased the root dry weight of G. uralensis. Multilevel comparative analysis showed that the application of 2.8 ds/m SiO2 was the optimum rate for improved growth and yield of G. uralensis under different salt levels. This study provides important information that can form the basis for the cultivation of high-yielding and high-quality G. uralensis in saline soils.


PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e6043 ◽  
Author(s):  
Marcin Robert Naliwajski ◽  
Maria Skłodowska

The study examines the effect of acclimation on carbon and nitrogen metabolism in cucumber leaves subjected to moderate and severe NaCl stress. The levels of glucose, sucrose, NADH/NAD+-GDH, AspAT, AlaAT, NADP+-ICDH, G6PDH and 6GPDH activity were determined after 24 and 72 hour periods of salt stress in acclimated and non-acclimated plants. Although both groups of plants showed high Glc and Suc accumulation, they differed with regard to the range and time of accumulation. Acclimation to salinity decreased the activities of NADP+-ICDH and deaminating NAD+-GDH compared to controls; however, these enzymes, together with the other examined parameters, showed elevated values in the stressed plants. The acclimated plants showed higher G6PDH activity than the non-acclimated plants, whereas both groups demonstrated similar 6PGDH activity. The high activities of NADH-GDH, AlaAT and AspAT observed in the examined plants could be attributed to a high demand for glutamate. The observed changes may be required for the maintenance of correct TCA cycle activity, and acclimation appeared to positively influence these adaptive processes.


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