Photosynthetic characteristics of rice leaves grown under red light with or without supplemental blue light.
In rice plants grown under red light supplemented with blue light (red/blue-light PPFD ratio was 4/1), photosynthetic rates per unit leaf area measured under white light at 1,600 and 250 micromol m-2) s-1 were higher than those in the plants grown under red light alone. The higher photosynthetic rates were associated with higher total N content of leaves, which was accompanied by larger amounts of key components of photosynthesis-limiting processes, including Rubisco, Cyt f, Chl and LHCII. These results suggested that the increase in total N content of leaves induced by supplemental blue light enhanced both light-saturated and light-limited photosynthesis.
Matsuda
Ryo
R
Department of Biological and Environmental Engineering, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657 Japan. aa47070@mail.ecc.u-tokyo.ac.jp
Ohashi-Kaneko
Keiko
K
Fujiwara
Kazuhiro
K
Goto
Eiji
E
Kurata
Kenji
K
D002734:Chlorophyll / Q000378:metabolism; D045348:Cytochromes f / Q000378:metabolism; D008027:Light; D009584:Nitrogen / Q000378:metabolism; D009586:Nitrogen Fixation / Q000502:physiology / Q000528:radiation effects; D012275:Oryza / Q000254:growth & development* / Q000378:metabolism / Q000528:radiation effects*; D010775:Photic Stimulation; D010788:Photosynthesis / Q000502:physiology / Q000528:radiation effects*; D018515:Plant Leaves / Q000254:growth & development* / Q000378:metabolism / Q000528:radiation effects*; D012273:Ribulose-Bisphosphate Carboxylase / Q000378:metabolism; D015854:Up-Regulation / Q000502:physiology / Q000528:radiation effects
D002734:Chlorophyll; D045348:Cytochromes f; D012273:Ribulose-Bisphosphate Carboxylase; D009584:Nitrogen