Effects of co-overproduction of Rubisco and chloroplast glyceraldehyde-3-phosphate dehydrogenase on photosynthesis in rice

Yuji Suzuki, Keiki Ishiyama, Ayaka Cho, Yuki Takegahara-Tamakawa, Shinya Wada, Chikahiro Miyake, Amane Makino

研究成果: Article査読

1 被引用数 (Scopus)

抄録

The capacity for regeneration of the substrate for Rubisco, ribulose 1,5-bisphosphate (RuBP), is one of the candidates for the bottleneck in photosynthesis in transgenic rice plants with overproduction of Rubisco. As the overproduction of chloroplast glyceraldehyde-3-phosphate dehydrogenase (GAPDH) was suggested to slightly enhance RuBP regeneration capacity, transgenic rice plants with co-overproduction of Rubisco and GAPDH were generated to improve photosynthesis. The amount of Rubisco increased by 8% to 18%, whereas GAPDH activity increased to 2.1- to 3.2-fold that of the wild-type. However, the rate of CO2 assimilation did not increase under conditions of high irradiance and different [CO2] partial pressures. The possibility that photosynthesis in the co-overproduced plants was co-limited by Rubisco, GAPDH, and other unknown factors is discussed.

本文言語English
ページ(範囲)283-287
ページ数5
ジャーナルSoil Science and Plant Nutrition
67
3
DOI
出版ステータスPublished - 2021

ASJC Scopus subject areas

  • 土壌科学
  • 植物科学

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