Differences between Maize and Rice in N-use Efficiency for Photosynthesis and Protein Allocation

Amane Makino, Iroe Sakuma, Emi Sudo, Tadahiko Mae

Research output: Contribution to journalArticlepeer-review

107 Citations (Scopus)

Abstract

The N-use efficiency for photosynthesis was higher in a C4 plant, maize, than in a C3 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 C4 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.

Original languageEnglish
Pages (from-to)952-956
Number of pages5
JournalPlant and Cell Physiology
Volume44
Issue number9
DOIs
Publication statusPublished - 2003 Sep 1

Keywords

  • Gas exchange (leaf)
  • N-use efficiency
  • Oryza saliva L.
  • Protein allocation
  • Ribulose-1,5-bisphosphate carboxylase/oxygenase
  • Zea mays L.

ASJC Scopus subject areas

  • Physiology
  • Plant Science
  • Cell Biology

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