Effect of CO₂Enrichment on the Translocation and Partitioning of Carbon at the Early Grain-filling Stage in Rice (<i>Oryza sativa</i>L.)

• Sasaki Haruto

  Graduate School of Agriculture and Life Sciences, University of Tokyo

• Aoki Naohiro

  Department of Plant Physiology, National Institute of Agrobiological Resources

• Sakai Hidemitsu

  National Institute of Agro-Environmental Sciences

• Hara Takahiro

  Graduate School of Agriculture and Life Sciences, University of Tokyo

• Uehara Naoko

  Graduate School of Agriculture and Life Sciences, University of Tokyo

• Ishimaru Ken

  Department of Plant Physiology, National Institute of Agrobiological Resources

• Kobayashi Kazuhiko

  Graduate School of Agriculture and Life Sciences, University of Tokyo

書誌事項

タイトル別名

• Effect of CO2 Enrichment on the Translocation and Partitioning of Carbon at the Early Grain-filling Stage in Rice (Oryza sativa L.)

抄録

Rice plants (Oryza sativa L.) were grown under normal (350 μL L^-1 CO₂) and CO₂-enriched (660 μL L^-1 CO₂) conditions, and ¹³CO₂ was supplied to the rice plants after heading to examine the translocation and partitioning of photosynthate at the early grain-filling stage. At 2 days after supplying ¹³CO₂, no difference in the ¹³C content of the whole plant was observed between the plants grown under normal and CO₂-enriched conditions, but translocation of ¹³C from the leaf blade to other plant organs seemed to be accelerated by CO₂ enrichment. Up to 9 days after supplying, ¹³CO₂ fixed into sucrose was mainly used to synthesize starch in the stem rather than translocated to the ear in plants grown under normal conditions. In contrast, the supplied ¹³C was rapidly translocated to the ear, and ¹³C stored as starch in the stem was also translocated to the ear in plants grown under CO₂-enriched conditions. Therefore, we concluded that CO₂ enrichment accelerated the translocation of carbohydrates to the ear.

収録刊行物

• Plant Production Science

  Plant Production Science 8 (1), 8-15, 2005

  日本作物学会

キーワード

• <SUP>13</SUP>C
• CO<SUB>2</SUB> enrichment
• Grain-filling
• Partitioning
• Rice
• Sink
• Translocation

詳細情報

• CRID: 1390001204466734336
• NII論文ID: 110001720821
• NII書誌ID: AA11162156
• DOI: 10.1626/pps.8.8
• COI: 1:CAS:528:DC%2BD2MXjtVeku78%3D
• ISSN: 13491008
• ISSN: 1343943X
• Web Site: https://www.tandfonline.com/doi/pdf/10.1626/pps.8.8
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可