Influences of Calcium Deficiency and Cerium on Growth of Spinach Plants

被引:0
作者
Liu Chao
Pan Bofu
Cao Weiqian
Lu Yun
Huang Hao
Chen Liang
Liu Xiaoqing
Wu Xiao
Hong Fashui
机构
[1] Suzhou University,College of Chemistry and Chemical Engineering
[2] Suzhou University,College of Life Sciences
来源
Biological Trace Element Research | 2008年 / 121卷
关键词
Cerium; Calcium deficiency; Spinach; Growth; Photosynthesis;
D O I
暂无
中图分类号
学科分类号
摘要
The main aim of the study was to determine the role of cerium in the amelioration of calcium-deficiency effects in spinach plants. Spinach plants were cultivated in Hoagland’s solution. They were subjected to calcium-deficiency and to cerium chloride administered in the calcium-present Hoagland’s media and calcium-deficient Hoagland’s media. Within 3weeks, young leaves developed distinct calcium-deficient symptoms, and plant growth significantly inhibited to calcium deprivation as would be expected; cerium-treated groups grown in the same conditions did not develop calcium-deficient symptoms; fresh weight, dry weight and chlorophyll content of spinach plants were increased by 35.9, 45 and 64.05% compared to those of plants cultivated in calcium-deficient media. In addition, calcium deprivation in spinach plants caused the reduction of photosynthetic rate, oxygen evolution rate and ribulose-1,5-bisphosphate carboxylase/oxygenase activity. The reduction of activities of nitrate reductase, glutamate dehydrogenase, glutamate synthase and glutamic-pyruvic transaminase was observed under calcium-deficient media. However, cerium treatment under calcium-deficient media could significantly improve photosynthesis and nitrogen metabolism of spinach plants. This is viewed as evidence that cerium added to calcium-deficient media in the spinach plants could substitute for calcium and improve spinach growth.
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页码:266 / 275
页数:9
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