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Start Over Author "Ze, Yuguan" Journal biological trace element research
13 results on '"Ze, Yuguan"'

8. Effects of cerium on key enzymes of carbon assimilation of spinach under magnesium deficiency

Author

Yin Sitao, Liu Chao, Li Na, Duan Yanmei, Ze Yuguan, Ji Zhe, Zhou Min, Luo Luyang, and Hong Fashui

Subjects
Endocrinology, Diabetes and Metabolism, Ribulose-Bisphosphate Carboxylase, Clinical Biochemistry, chemistry.chemical_element, Photosynthesis, Biochemistry, Inorganic Chemistry, chemistry.chemical_compound, Gene Expression Regulation, Plant, Spinacia oleracea, Botany, Plant Proteins, biology, Magnesium, Reverse Transcriptase Polymerase Chain Reaction, fungi, Biochemistry (medical), RuBisCO, food and beverages, General Medicine, Cerium, Hydroponics, biology.organism_classification, Carbon, chemistry, Chlorophyll, biology.protein, Spinach, Plant nutrition
Abstract

The mechanism of the fact that cerium improves the photosynthesis of plants under magnesium deficiency is poorly understood. The main aim of the study was to determine the role of cerium in the amelioration of magnesium deficiency effects in CO(2) assimilation of spinach. Spinach plants were cultivated in Hoagland's solution. They were subjected to magnesium deficiency and to cerium chloride administered in the magnesium-present Hoagland's media and magnesium-deficient Hoagland's media. The results showed that the chlorophyll synthesis and oxygen evolution was destroyed, and the activities of Rubisco carboxylasae and Rubisco activase and the expression of Rubisco large subunit (rbcL), Rubisco small subunit (rbcS), and Rubisco activase subunit (rca) were significantly inhibited, then plant growth was inhibited by magnesium deficiency. However, cerium promotes the chlorophyll synthesis, the activities of two key enzymes in CO(2) assimilation, and the expression of rbcL, rbcS, and rca, thus leading to the enhancement of spinach growth under magnesium-deficient conditions.

Published
2009

13. Effects of Cerium on Key Enzymes of Carbon Assimilation of Spinach Under Magnesium Deficiency.

Author

Ze Yuguan, Zhou Min, Luo Luyang, Ji Zhe, Liu Chao, Yin Sitao, Duan Yanmei, Li Na, and Hong Fashui

Abstract

Abstract  The mechanism of the fact that cerium improves the photosynthesis of plants under magnesium deficiency is poorly understood. The main aim of the study was to determine the role of cerium in the amelioration of magnesium deficiency effects in CO2 assimilation of spinach. Spinach plants were cultivated in Hoagland’s solution. They were subjected to magnesium deficiency and to cerium chloride administered in the magnesium-present Hoagland’s media and magnesium-deficient Hoagland’s media. The results showed that the chlorophyll synthesis and oxygen evolution was destroyed, and the activities of Rubisco carboxylasae and Rubisco activase and the expression of Rubisco large subunit (rbcL), Rubisco small subunit (rbcS), and Rubisco activase subunit (rca) were significantly inhibited, then plant growth was inhibited by magnesium deficiency. However, cerium promotes the chlorophyll synthesis, the activities of two key enzymes in CO2 assimilation, and the expression of rbcL, rbcS, and rca, thus leading to the enhancement of spinach growth under magnesium-deficient conditions. [ABSTRACT FROM AUTHOR]

Published
2009
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