Abstract：
: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 3 weeks, 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.
journal_name
Biol Trace Elem Resjournal_title
Biological trace element researchauthors
Chao L,Bofu P,Weiqian C,Yun L,Hao H,Liang C,Xiaoqing L,Xiao W,Fashui Hdoi
10.1007/s12011-007-8054-ysubject
Has Abstractpub_date
2008-03-01 00:00:00pages
266-75issue
3eissn
0163-4984issn
1559-0720journal_volume
121pub_type
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