Effects of disalicylidenepropandiamine and near far-red light on ^<14>CO_2-fixation in Chlorella cells

概要

論文の詳細を見る
1) With Chlorella ellipsoidea cells, in the presence of 5 × 10^<-6>_M DSPD, or in its absence, the amounts of ^<14>CO_2 incorporated in P-esters, serine-plus-glycine and alanine were larger under red light than under blue light, whereas blue light specifically increased ^<14>CO_2-incorporation in aspartate, glutamate, malate and fumarate (blue light effect). The amount of total ^<14>C fixed under blue or red light was greatly decreased by the addition of DSPD. When the concentration of DSPD was raised to 5 × 10^<-4>_M, practically no radioactiity was found, under blue or red light, in aspartate, glutamate and fumarate. Radioactivity in alanine was greatly increased. Effects of higher concentration of DSPD are explained as due to the inhibition of PEP carboxylase activity in Chlorella cells. 2) The percentage incorporation of ^<14>C into aspartate and the other compounds mentioned above, under near infra-red illumination was significantly smaller than that under blue light and was almost equal to that under red light. These results along with the effect of 5 × 10^<-6>_M DSPD, exclude the possibility that cyclic photophosphorylation is involved in the "blue light effect" mechanism.
日本植物生理学会の論文