K. Sekino et Y. Shiraiwa, EVIDENCE FOR THE INVOLVEMENT OF MITOCHONDRIAL RESPIRATION IN CALCIFICATION IN A MARINE COCCOLITHOPHORID, EMILIANIA-HUXLEYI, Plant and Cell Physiology, 37(7), 1996, pp. 1030-1033
In the marine coccolithophorid, Emiliania huxleyi, CaCO3 production un
der illumination showed a lag phase for about 3 h and then increased g
reatly. During the lag phase the rate of CaCO3 production in the light
was similar to that in the dark. The production of CaCO3 in the dark
was inhibited by the addition of 170 mu M CCCP, 1 mM KCN and 1 mM SHAM
. These results suggest that a little production of CaCO3 is supported
by energy from mitochondrial respiration, but that large amount of Ca
CO3 production requires photosynthesis.