Effects of manganese deficiency on spectral characteristics and oxygen evolution in maize chloroplasts.
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.
Gong
Xiaolan
X
Medical College of Soochow University, Suzhou, People's Republic of China.
Wang
Ying
Y
Liu
Chao
C
Wang
Sisi
S
Zhao
Xiaoyang
X
Zhou
Min
M
Li
Na
N
Lu
Yun
Y
Hong
Fashui
F
D002734:Chlorophyll / Q000737:chemistry / Q000378:metabolism; D000077194:Chlorophyll A; D002736:Chloroplasts / Q000187:drug effects / Q000378:metabolism*; D004579:Electron Transport / Q000187:drug effects; D008345:Manganese / Q000378:metabolism* / Q000494:pharmacology; D010100:Oxygen / Q000378:metabolism*; D045332:Photosystem II Protein Complex / Q000737:chemistry / Q000378:metabolism; D013050:Spectrometry, Fluorescence; D013056:Spectrophotometry, Ultraviolet; D014443:Tyrosine / Q000737:chemistry / Q000378:metabolism; D003313:Zea mays / Q000187:drug effects / Q000378:metabolism*
D045332:Photosystem II Protein Complex; D002734:Chlorophyll; D014443:Tyrosine; D008345:Manganese; C037184:chlorophyll b; D010100:Oxygen; D000077194:Chlorophyll A