maximum in vivo electron transport rate;
net photosynthetic rate;
ribulose-1,5-bisphosphate carboxylase/oxygenase activase;
RuBP regeneration limitation;
sucrose-phosphate synthase;
Triticum;
ELEVATED CO2;
ATMOSPHERIC CO2;
REGENERATION LIMITATION;
PARTIAL-PRESSURE;
RICE LEAF;
TEMPERATURE;
MECHANISMS;
CAPACITY;
RUBISCO;
LEAVES;
D O I:
10.1007/s11099-009-0025-4
中图分类号:
Q94 [植物学];
学科分类号:
071001 ;
摘要:
Net photosynthetic rate (P (N)) measured at the same CO2 concentration, the maximum in vivo carboxylation rate, and contents of ribulose-1,5-bisphosphate (RuBP) carboxylase/oxygenase (RuBPCO) and RuBPCO activase were significantly decreased, but the maximum in vivo electron transport rate and RuBP content had no significant change in CO2-enriched [EC, about 200 A mu mol mol(-1) above the ambient CO2 concentration (AC)] wheat leaves compared with those in AC grown wheat leaves. Hence photosynthetic acclimation in wheat leaves to EC is largely due to RuBP carboxylation limitation.