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| 003 | MX-MdCICY | ||
| 005 | 20250625153946.0 | ||
| 040 | _cCICY | ||
| 090 | _aB-14689 | ||
| 245 | 1 | 0 | _aBeneficial Role of Exogenous Spermidine on Nitrogen Metabolism in Tomato Seedlings Exposed to Saline-alkaline Stress |
| 490 | 0 | _vJ. Amer. Soc. Hort. Sci., 138, p.38-49, 2013 | |
| 520 | 3 | _aWe studied the effects of exogenous spermidine (Spd)on plant growth and nitrogen metabolism in two cultivars of tomato (Solanum lycopersicum)that have differential sensitivity to mixed salinity-alkalinity stress: 'Jinpeng Chaoguan' (salt-tolerant)and 'Zhongza No. 9' (salt-sensitive). Seedling growth of both tomato cultivars was inhibited by salinity-alkalinity stress, but Spd treatment alleviated the growth reduction to some extent, especially in 'Zhongza No. 9'. Exogenous Spd may help reduce stress-induced increases in free amino acids, ammonium (NH4 +)contents, and NADH-dependent glutamate dehydrogenase (NADH-GDH)activities; depress stress-induced decreases in soluble protein and nitrate content; and depress nitrate reductase, nitrite reductase, glutamine synthetase (GS), NADH-dependent glutamate synthase (NADH-GOGAT), glutamate oxaloacetate transaminase (GOT), and glutamate pyruvate transaminase (GPT)activities, especially for 'Zhongza No. 9'. Based on our results, we suggest that exogenous Spd promotes the assimilation of excess toxic NH4 + by coordinating and strengthening the synergistic action of NADH-GDH, GS/NADH-GOGAT, and transamination pathways, all during saline-alkaline stress. Subsequently, NH4 + and its related enzymes (GDH, GS, GOGAT, GOT, and GPT), in vivo, are maintained in a proper and balanced state to enable mitigation of stress-resulted damages. These results suggest that exogenous Spd treatment can relieve nitrogen metabolic disturbances caused by salinity-alkalinity stress and eventually promote plant growth. | |
| 650 | 1 | 4 | _aAMMONIUM ASSIMILATION |
| 650 | 1 | 4 | _aGLUTAMATE DEHYDROGENASE |
| 650 | 1 | 4 | _aGLUTAMINE SYNTHETASE |
| 650 | 1 | 4 | _aGLUTAMATE SYNTHASE |
| 650 | 1 | 4 | _aTRANSAMINATION |
| 700 | 1 | 2 | _aZhang, Y. |
| 700 | 1 | 2 | _aShy, Y. |
| 700 | 1 | 2 | _aHu, X-H. |
| 856 | 4 | 0 |
_uhttps://drive.google.com/file/d/10HSsV8gO40YBWho8mmQzd_LyUQJ2vMDw/view?usp=drivesdk _zPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx |
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