Journal
BIOLOGICAL TRACE ELEMENT RESEARCH
Volume 142, Issue 3, Pages 760-772Publisher
HUMANA PRESS INC
DOI: 10.1007/s12011-010-8769-z
Keywords
Cerium; Magnesium deficiency; Maize; Light absorption and transfer; Photo-phosphorylation
Funding
- National Natural Science Foundation of China [30800068]
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Rare earth elements can promote photosynthesis, but their mechanisms are still poorly understood under magnesium deficiency. The present study was designed to determine the role of cerium in magnesium-deficient maize plants. Maize was cultivated in Hoagland's solution added with cerium with and without adequate quantities of magnesium. Under magnesium-deficient conditions, cerium can prevents inhibition of synthesis of photosynthetic pigment, improves light energy absorption and conversion, oxygen evolution, and the activity of photo-phosphorelation and its coupling factor Ca2+-ATPase. These results suggest that cerium could partly substitute magnesium, improving photosynthesis and plant growth.
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