PLANT ARCHITECTURE : TRADE-OFF BETWEEN GROWTH AND MECHANICAL STABILITY

工厂架构：生长与机械稳定性之间的权衡

• 批准号: 20370015
• 负责人: HIROSE Tadaki
• 金额: $ 11.81万
• 依托单位: Tokyo University of Agriculture
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20370015/
• 关键词: 生理生態; 植物のアーキテクチャ; 伸長成長; 力学的安定性; 資源利用; 成長と繁殖; 窒素; 光; 分枝自律性; 植物; アーキテクチャ; 繁殖; 組織化学; リグニン

We studied the effect of planting density on plant architecture with particular attention to growth and mechanical strength of metamers. Crowded plants elongated their stem at the expense of mechanical stability. On the other hand, uncrowded plants reduced elongation and increased light interception by lateral extension of branches. Nitrogen use efficiency was higher in uncrowded plants, whereas light use efficiency was higher in crowded plants. Yang's modulus of elasticity increased with increasing dry mass density of stem. Stems of crowded plants had a lower dry mass density, but Yang's modulus per dry mass density was higher. However, they increased stem height to the limit of lodging.

我们研究了种植密度对植物构型的影响，特别是对生长和机械强度的影响。拥挤的植物以牺牲机械稳定性为代价延长了它们的茎。另一方面，不拥挤的植株通过枝条的侧伸减少了伸长，增加了对光的拦截。不拥挤植物的氮素利用效率较高，而拥挤植物的光能利用效率较高。杨氏弹性模量随干质量密度的增大而增大。拥挤植株茎干质量密度较低，但每干质量密度杨氏模量较高。然而，它们将茎高增加到倒伏的极限。

项目成果

Costs and benefits of photosynthetic light acclimation of tree seedlings in response to gap formation

树苗光合光驯化响应间隙形成的成本和效益

• 发表时间: 2008
• 期刊: Oecologia 155
• 作者: Riichi Oguchi;Kouki Hikosaka;Tsutom Hiura and Tadaki Hirose
• 通讯作者: Tsutom Hiura and Tadaki Hirose

Cold-tolerant crop species have greater temperature homeostasis of leaf respiration and photosynthesis than cold-sensitive species.

• DOI: 10.1093/pcp/pcn189
• 发表时间: 2009-02
• 期刊: Plant & cell physiology
• 影响因子: 4.9
• 作者: W. Yamori;K. Noguchi;K. Hikosaka;I. Terashima

Does photosynthesis adapt to CO2-enriched environments? An experiment on plants originating from three natural CO2 springs

光合作用是否适应富含二氧化碳的环境？

• 发表时间: 2009
• 期刊: New Phytologist
• 影响因子: 9.4
• 作者: Yamazaki T;Miyazawa Y;Kobayashi A;Moriwaki A;Fujii N;Takahashi H;森本恭子;Onoda Y
• 通讯作者: Onoda Y

Growth and nitrogen use in Xanthium canadense grown in an open or in a dense stand.

• DOI: 10.1111/j.1399-3054.2011.01563.x
• 发表时间: 2012-04
• 期刊: Physiologia plantarum
• 影响因子: 6.4
• 作者: Ryoji Watari;Hisae Nagashima;T. Hirose

Plants in a crowded stand regulate their height growth so as to maintain similar heights to neighbours even when they have potential advantages in height growth

• DOI: 10.1093/aob/mcr109
• 发表时间: 2011-07-01
• 期刊: ANNALS OF BOTANY
• 影响因子: 4.2
• 作者: Nagashima, Hisae;Hikosaka, Kouki
• 通讯作者: Hikosaka, Kouki