Journal
BIOLOGICAL TRACE ELEMENT RESEARCH
Volume 136, Issue 3, Pages 372-382Publisher
HUMANA PRESS INC
DOI: 10.1007/s12011-009-8549-9
Keywords
Mn(2+) deficiency; Maize; Chloroplast; Spectral characteristics; Oxygen evolution
Funding
- National Natural Science Foundation of China [30800068]
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The effects of Mn(2+) deficiency on light absorption, transmission, and oxygen evolution of maize chloroplasts were investigated by spectral methods. Several effects of Mn(2+) deficiency were observed: (1) the skeleton of pigment protein complexes and oxygen-evolving center and the combination between pigment and protein were damaged; (2) the light absorption of chloroplasts was obviously decreased; (3) the energy transfer among amino acids within PS II protein-pigment complex and decreased energy transport from tyrosine residue to chlorophyll a and from chlorophyll b and carotenoid to chlorophyll a were inhibited; (4) the oxygen-evolving of chloroplast was significantly inhibited. However, Mn(2+) addition decreased the damage of light absorption, transmission, and oxygen evolution of maize chloroplasts caused by Mn(2+) deficiency.
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