Ammonium uptake and metabolism alleviate PEG-induced water stress in rice seedlings

2018 ◽  
Vol 132 ◽  
pp. 128-137 ◽  
Author(s):  
Xiaochuang Cao ◽  
Chu Zhong ◽  
Chunquan Zhu ◽  
Lianfeng Zhu ◽  
Junhua Zhang ◽  
...  
Keyword(s):  
Water Stress ◽  
Ammonium Uptake ◽  
Rice Seedlings ◽  
Uptake And Metabolism

Impact of low pH and aluminium on nitrogen uptake and metabolism in roots of Lotus japonicus

Biologia ◽  
2007 ◽  
Vol 62 (6) ◽  
Author(s):  
Peter Pal’ove-Balang ◽  
Igor Mistrík
Keyword(s):  
Nitrate Reductase ◽  
Nitrogen Uptake ◽  
Nitrate Uptake ◽  
Reductase Activity ◽  
Lotus Japonicus ◽  
Low Ph ◽  
Ammonium Uptake ◽  
Glutamine Synthetase Activity ◽  
Al Treatment ◽  
Uptake And Metabolism

AbstractThe effect of low pH and aluminum on nitrogen uptake and metabolism was studied in roots of Lotus japonicus grown in hydroponic cultures. The low pH slightly suppressed root elongation, and this effect was accompanied by the suppression of nitrate and ammonia uptake, as well as the nitrate reductase activity. In spite of high resistance of young Lotus plants to short-term Al application, the one-day treatment of Al strongly reduced nitrate uptake and also the activity of nitrate reductase (NRA) in the apical parts of roots. The glutamine synthetase activity was also suppressed by Al treatment, but in lower extent. On the other hand, the ammonium uptake and nitrite reductase activity stayed unchanged by Al treatment and the values were practically the same as in control plants. These results support the view that nitrate uptake and nitrate reduction might be the main processes responsible for Al induced growth retardation in Lotus plants grown in mineral acid soils.

scholarly journals Lack of ACTPK 1, an STY kinase, enhances ammonium uptake and use, and promotes growth of rice seedlings under sufficient external ammonium

2018 ◽  
Vol 93 (6) ◽  
pp. 992-1006 ◽  
Author(s):  
Marcel P. Beier ◽  
Mitsuhiro Obara ◽  
Akiko Taniai ◽  
Yuki Sawa ◽  
Jin Ishizawa ◽  
...  
Keyword(s):  
Ammonium Uptake ◽  
Rice Seedlings

scholarly journals Effects of Preconditioning on Photosynthesis of Rice Seedlings under Water Stress

2011 ◽  
Vol 11 ◽  
pp. 1339-1345 ◽  
Author(s):  
Xuemei Li ◽  
Lihong Zhang ◽  
Lianju Ma
Keyword(s):  
Water Stress ◽  
Rice Seedlings
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