Improvement of cerium of photosynthesis functions of maize under magnesium deficiency.
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 Ca(2+)-ATPase. These results suggest that cerium could partly substitute magnesium, improving photosynthesis and plant growth.
Zhou
Min
M
Medical College of Soochow University, 215123 Suzhou, People's Republic of China.
Gong
Xiaolan
X
Wang
Ying
Y
Liu
Chao
C
Hong
Mengmeng
M
Wang
Ling
L
Hong
Fashui
F
D002563:Cerium / Q000494:pharmacology*; D008274:Magnesium / Q000378:metabolism*; D010766:Phosphorylation / Q000187:drug effects / Q000528:radiation effects; D010788:Photosynthesis / Q000187:drug effects*; D003313:Zea mays / Q000187:drug effects* / Q000378:metabolism*
D002563:Cerium; D008274:Magnesium