Cerium relieves the inhibition of photosynthesis of maize caused by manganese deficiency
Gong X.1; Hong M.1; Wang Y.1; Zhou M.1; Cai J.1; Liu C.1; Gong S.1; Hong F.1
Source PublicationBiological Trace Element Research
ISSN01634984 15590720
AbstractIt had been proved that manganese (Mn) deficiency could damage the photosynthesis of plants, and lanthanides could improve photosynthesis and greatly promote plant growth. However, the mechanisms on how Mn deficiency and cerium (Ce) addition affects the photosynthetic carbon reaction of plants under manganese deficiency are still poorly understood. In this study, the main aim was to determine Mn deficiency and cerium addition effects in key enzymes of CO assimilation of maize. Maize plants were cultivated in Hoagland's solution. They were subjected to Mn deficiency and to Ce administered in the Mn-present Hoagland's media and Mn-deficient Hoagland's media. The growth condition, chlorophyll synthesis, and oxygen evolution were significantly destroyed by manganese deficiency, the activities of ribulose-1, 5-bisphosphate caroxylase/oxygenase (Rubisco), and Rubisco activase, and their genes expressions were inhibited by Mn deficiency. However, Ce treatment promoted the chlorophyll synthesis, oxygen evolution, and the activities of two key enzymes in CO assimilation. Reverse transcription polymerase chain reaction was carried out, and the results showed that the mRNA expressions of Rubisco small subunit (rbcS), Rubisco large subunit (rbcL), and Rubisco activase subunit (rca) in the cerium-treated maize were obviously increased. One of the possible mechanisms of carbon reaction promoted by Ce is that the Ce treatment resulted in the enhancements of Rubisco and Rubisco activase mRNA amounts, the protein levels, and activities of Rubisco and Rubisco activase, thereby leading to the high rate of photosynthetic carbon reaction and enhancement of maize growth under Mn-deficient conditions. Together, the experimental study implied that Ce could partly substitute for magnesium and increase the oxidative stress-resistance of spinach chloroplast grown in Mn-deficiency conditions, but the mechanisms need further study. © 2010 Springer Science+Business Media, LLC.
KeywordCerium Maize Manganese deficiency Oxygen evolution Photosynthetic carbon reaction
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Cited Times [WOS]:14   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Soochow University
2.Lasa Normal Higher Training School
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GB/T 7714
Gong X.,Hong M.,Wang Y.,et al. Cerium relieves the inhibition of photosynthesis of maize caused by manganese deficiency[J]. Biological Trace Element Research,2011,141(1-3):305-316.
APA Gong X..,Hong M..,Wang Y..,Zhou M..,Cai J..,...&Hong F..(2011).Cerium relieves the inhibition of photosynthesis of maize caused by manganese deficiency.Biological Trace Element Research,141(1-3),305-316.
MLA Gong X.,et al."Cerium relieves the inhibition of photosynthesis of maize caused by manganese deficiency".Biological Trace Element Research 141.1-3(2011):305-316.
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