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| 1 | Magnesium deficiency in plants:An urgent problem显示文摘Although magnesium(Mg) is one of the most important nutrients, involved in many enzyme activities and the structural stabilization of tissues, its importance as a macronutrient ion has been overlooked in recent decades by botanists and agriculturists, who did not regard Mg deficiency(MGD) in plants as a severe health problem. However, recent studies have shown,surprisingly, that Mg contents in historical cereal seeds have markedly declined over time, and two thirds of people surveyed in developed countries received less than their minimum daily Mg requirement. Thus, the mechanisms of response to MGD and ways to increase Mg contents in plants are two urgent practical problems. In this review, we discuss several aspects of MGD in plants, including phenotypic and physiological changes, cell Mg2+homeostasis control by Mg2+transporters, MGD signaling, interactions between Mg2+and other ions, and roles of Mg2+in plant secondary metabolism. Our aim is to improve understanding of the influence of MGD on plant growth and development and to advance crop breeding for Mg enrichment. | Wanli Guo Hussain Nazim Zongsuo Liang Dongfeng Yang | 2016 | The Crop Journal2016，4，2： | 39 |
| 2 | 镁对‘新天玲’西瓜叶片光合色素、可溶性蛋白含量和硝酸还原酶活性的影响显示文摘通过沙培试验,研究0(CK)、24、48、96、192 mg/L不同镁水平对‘新天玲’西瓜不同生育期叶片光合作用色素、可溶性蛋白含量和硝酸还原酶活性的影响。结果表明:镁水平影响‘新天玲’西瓜的整个生长发育过程,各时期随着镁水平的升高,西瓜叶片中叶绿素、类胡萝卜素、可溶性糖、可溶性蛋白含量和硝酸还原酶活性呈先升高后降低趋势,在镁水平为48 mg/L时各物质含量达到同期的最大值、NR活性最强,为最适镁浓度;而缺镁、低镁、镁过量均会产生不利影响;膨瓜期是‘新天玲’西瓜受镁水平影响比较严重的时期,该期应特别注意镁肥用量,以减轻镁对西瓜叶片碳氮代谢指标的影响,从而促进西瓜优质、高产。 | 林丽琳 陈晟 施木田 吴宇芬 赵依杰 王俊芳 周庆云 彭密红 | 2015 | 热带农业科学2015，35，1： | 8 |
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