The post-illumination chlorophyll fluorescence transient indicates the RuBP regeneration limitation of photosynthesis in low light in Arabidopsis.
The mechanism of post-illumination chlorophyll fluorescence transient (PIFT) was investigated in Arabidopsis. PIFT was detected in the wild type after illumination with low light. In the fba3-2 (fructose-1,6-bisphosphate aldolase) mutant, in which PIFT is enhanced, strong light also induced PIFT. PIFT was suppressed not only in the triose phosphate/phosphate translocator (tpt-2) mutant, but also in tpt-2 fba3-2, suggesting that triose phosphates, such as dihydroxyacetone phosphate (DHAP), are involved in the PIFT mechanism. We concluded that PIFT is associated with ribulose-1,5-bisphosphate (RuBP)-regeneration limitation of photosynthesis in low light.
Gotoh
Eiji
E
Department of Agriculture, Kyushu University, Fukuoka, Japan.
Kobayashi
Yoshichika
Y
Tsuyama
Michito
M
D017360:Arabidopsis / Q000235:genetics / Q000378:metabolism*; D002734:Chlorophyll / Q000235:genetics / Q000378:metabolism; D005453:Fluorescence; D005632:Fructose / Q000235:genetics; D008027:Light; D008029:Lighting; D010429:Pentoses; D010710:Phosphates; D010775:Photic Stimulation; D010788:Photosynthesis / Q000235:genetics; D012274:Ribulosephosphates / Q000378:metabolism
D010429:Pentoses; D010710:Phosphates; D012274:Ribulosephosphates; D002734:Chlorophyll; C001933:ribulose-1,5 diphosphate; D005632:Fructose; C100182:ribulose