Synthetic biology approaches to improve Rubisco carboxylation efficiency in C3 Plants: Direct and Indirect Strategies
文献类型： 外文期刊
作者： Cui, Chuwen 1 ; Shang, Mengting 1 ; Li, Zhigang 2 ; Xiao, Jianwei 1 ;
作者机构： 1.Beijing Forestry Univ, Coll Biol Sci & Biotechnol, Beijing 100083, Peoples R China
2.Chinese Acad Trop Agr Sci, Spice & Beverage Res Inst, Wanning 571500, Peoples R China
3.Beijing Forestry Univ, State Key Lab Efficient Prod Forest Resources, Beijing 100083, Peoples R China
关键词： Rubisco; Photosynthesis; C 3 plant; synthetic biology techniques
期刊名称：JOURNAL OF PLANT PHYSIOLOGY （ 影响因子：4.1； 五年影响因子：4.3 ）
ISSN： 0176-1617
年卷期： 2025 年 307 卷
页码：
收录情况： SCI
摘要： Food security remains a pressing issue due to the growing global population and climate change, including the global warming along with increased atmospheric CO2 levels, which can negatively impact C3 crop yields. A major limitation in C3 plants is the inefficiency of Ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) due to its low carboxylation activity and competing oxygenase activity. Improving Rubisco efficiency in C3 plants is thus essential for improving photosynthetic performance. Recent advances in synthetic biology have introduced promising strategies to overcome these limitations. This review highlights the latest synthetic biology and gene transformation techniques aimed at optimizing Rubsico carboxylation efficiency. Next, direct approaches such as engineering Rubisco subunits by replacing plant Rubisco with proteins from other organisms are discussed. Additionally, indirect strategies involve modifications of Rubisco-interacting proteins and adjustment of Rubisco environment. We explore CO2-concentrating mechanisms (CCMs) based on pyrenoids and carboxysomes, which increase local CO2 concentrations around Rubisco thus favouring the carboxylation reaction. Lastly, photorespiratory bypasses are also covered in this review.
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