Relation between nitrogen and ribulose-1,5-bisphosphate carboxylase in rice leaves from emergence through senescence

Amane Makino, Tadahiko Mae, Koji Ohira

研究成果: Article査読

196 被引用数 (Scopus)

抄録

The relation between N content and ribulose-l,5-bisphosphate (RuBP) carboxylase protein was examined in the 12th leaf blade of rice. Plants were grown under different amounts of N after the emergence of the 12th leaf blade. RuBP carboxylase protein increased with leaf N during leaf expansion. The synthesis of RuBP carboxylase predominated during this period, and changes in the amounts of carboxylase synthesized until leaf death paralleled changes in the N influx to the leaves. When the carboxylase reached its maximum content, the proportion of RuBP carboxylase to leaf N was 27 to 28% irrespective of N treatment. As the leaf senesced, however, this proportion differed significantly with the treatment. It was higher in the N-deficient leaf than in the N-sufficient leaf. This was due to different patterns of RuBP carboxylase degradation for the treatments during senescence. RuBP carboxylase was degraded actively during the early stage of senescence in the N-sufficient leaf, whereas its degradation proceeded almost constantly in the N-deficient leaf during senescence.

本文言語English
ページ(範囲)429-437
ページ数9
ジャーナルPlant and Cell Physiology
25
3
出版ステータスPublished - 1984 4 1

ASJC Scopus subject areas

  • 生理学
  • 植物科学
  • 細胞生物学

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