Effect of Nitrate on Root Development and Nitrogen Uptake of Suaeda physophora Under NaCl Salinity
文献类型：期刊论文
| 作者 | Yuan Jun-Feng ; Feng Gu ; Ma Hai-Yan ; Tian Chang-Yan |
| 刊名 | PEDOSPHERE
 |
| 出版日期 | 2010 |
| 卷号 | 20期号:4页码:536-544 |
| 关键词 | NUTRITIONAL CONTROL PLANTAGO-MARITIMA SALT TOLERANCE GROWTH HALOPHYTE SEEDLINGS NUTRIENT STRESS SHOOT AVAILABILITY |
| ISSN号 | 1002-0160 |
| 通讯作者 | Tian, CY, Chinese Acad Sci, Key Lab Oasis Ecol & Desert Environm, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China |
| 中文摘要 | The effects of NaCl salinity and NO3- on growth, root morphology, and nitrogen uptake of a halophyte Suaeda physophora were evaluated in a factorial experiment with four concentrations of NaCl (1, 150, 300, and 450 mmol L-1) and three NO3- levels (0.05, 5, and 10 mmol L-1) in solution culture for 30 d. Addition of NO3- at 10 mmol L-1 significantly improved the shoot (P < 0.001) and root (P < 0.001) growth and the promotive effect of NO3- was more pronounced on root dry weight despite the high NaCl concentration in the culture solution, leading to a significant increase in the root:shoot ratio (P < 0.01). Lateral root length, but not primary root length, considerably increased with increasing NaCl salinity and NO3- levels (P < 0.001), implying that Na+ and NO3- in the culture solution simultaneously stimulated lateral root growth. Concentrations of Na+ in plant tissues were also significantly increased by higher NaCl treatments (P < 0.001). At 10 mmol L-1 NO3-, the concentrations of NO3- and total nitrogen and nitrate reductase activities in the roots were remarkably reduced by increasing salinity (P < 0.001), but were unaffected in the shoots. The results indicated that the fine lateral root development and effective nitrogen uptake of the shoots might contribute to high salt tolerance of S. physophora under adequate NO3- supply. |
| 学科主题 | 植物生理学 |
| 收录类别 | SCI |
| 公开日期 | 2011-08-19 |
| 源URL | [http://ir.xjlas.org/handle/365004/9928]  |
| 专题 | 新疆生态与地理研究所_中国科学院新疆生态与地理研究所(2010年以前数据) |
| 推荐引用方式 GB/T 7714 | Yuan Jun-Feng,Feng Gu,Ma Hai-Yan,et al. Effect of Nitrate on Root Development and Nitrogen Uptake of Suaeda physophora Under NaCl Salinity[J]. PEDOSPHERE,2010,20(4):536-544. |
| APA | Yuan Jun-Feng,Feng Gu,Ma Hai-Yan,&Tian Chang-Yan.(2010).Effect of Nitrate on Root Development and Nitrogen Uptake of Suaeda physophora Under NaCl Salinity.PEDOSPHERE,20(4),536-544. |
| MLA | Yuan Jun-Feng,et al."Effect of Nitrate on Root Development and Nitrogen Uptake of Suaeda physophora Under NaCl Salinity".PEDOSPHERE 20.4(2010):536-544. |
入库方式： OAI收割
来源：新疆生态与地理研究所
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