Differences between maize and rice in N-use efficiency for photosynthesis and protein allocation
Differences between maize and rice in N-use efficiency for photosynthesis and protein allocation
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DOI：
10.1093/pcp/pcg113
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发表时间：
2003-09-01
影响因子：
4.9
通讯作者：
Mae, T
中科院分区：
文献类型：
--
作者：
Makino, A;Sakuma, H;Mae, T
C-4 植物（玉米）的光合作用氮利用效率高于 C-3 植物（水稻），包括具有最佳 1,5-二磷酸核酮糖羧化酶 (Rubisco) 含量的 rbcS 反义水稻，用于 CO2 饱和光合作用，即使在饱和 CO2 条件下测量光合作用也是如此。玉米中 C-4 循环酶的氮成本并不大，并且 Rubisco 的用量较低，可以在类囊体成分中投入更多的氮。类囊体成分含量的增加以及二氧化碳浓缩机制可能支持玉米光合作用更高的氮利用效率。
The N-use efficiency for photosynthesis was higher in a C-4 Plant, maize, than in a C-3 plant, rice, including rbcS antisense rice with optimal ribulose-1,5-bisphosphate carboxylase (Rubisco) content for CO2-saturated photosynthesis, even when photosynthesis was measured under saturating CO2 conditions. The N cost for the C-4 cycle enzymes in maize was not large, and the lower amount of Rubisco allowed a greater N investment in the thylakoid components. This greater content of the thylakoid components as well as the CO2 concentrating mechanism may support higher N-use efficiency for photosynthesis in maize.