Genetic engineering of the Calvin cycle toward enhanced photosynthetic CO(2) fixation in microalgae.
Genetic engineering of the Calvin cycle toward enhanced photosynthetic CO(2) fixation in microalgae.
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卡尔文循环基因工程增强微藻光合作用二氧化碳固定
DOI:
10.1186/s13068-017-0916-8
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发表时间:
2017
影响因子:
6.3
通讯作者:
Chen F
中科院分区:
文献类型:
--
作者:
Yang B;Liu J;Ma X;Guo B;Liu B;Wu T;Jiang Y;Chen F
Background:Photosynthetic microalgae are emerging as potential biomass feedstock for sustainable production of biofuels and value-added bioproducts. CO2biomitigation through these organisms is considered as an eco-friendly and promising alternative to the existing carbon sequestration methods. Nonetheless, the inherent relatively low photosynthetic capacity of microalgae has hampered the practical use of this strategy for CO2biomitigation applications.Results:Here, we demonstrate the feasibility of improving photosynthetic capacity by the genetic manipulation of the Calvin cycle in the typical green microalgaChlorella vulgaris. Firstly, we fused a plastid transit peptide to upstream of the enhanced green fluorescent protein (EGFP) and confirmed its expression in the chloroplast ofC. vulgaris. Then we introduced the cyanobacterial fructose 1,6-bisphosphate aldolase, guided by the plastid transit peptide, intoC. vulgarischloroplast, leading to enhanced photosynthetic capacity (~ 1.2-fold) and cell growth. Molecular and physiochemical analyses suggested a possible role for aldolase overexpression in promoting the regeneration of ribulose 1,5-bisphosphate in the Calvin cycle and energy transfer in photosystems.Conclusions:Our work represents a proof-of-concept effort to enhance photosynthetic capacity by the engineering of the Calvin cycle in green microalgae. Our work also provides insights into targeted genetic engineering toward algal trait improvement for CO2biomitigation uses.
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影响因子:
2.9
作者:
Diaz-Santos, Encarnacion;de la Vega, Marta;Leon, Rosa
通讯作者:
Leon, Rosa
影响因子:
7.2
作者:
KOSSMANN, J;SONNEWALD, U;WILLMITZER, L
通讯作者:
WILLMITZER, L
影响因子:
3.3
作者:
Ma, Weimin;Wei, Lanzhen;Chen, Haibao
通讯作者:
Chen, Haibao
影响因子:
4.9
作者:
Nakahara, K;Yamamoto, H;Yokota, A
通讯作者:
Yokota, A
影响因子:
3.8
作者:
Li, Yantao;Han, Danxiang;Hu, Qiang
通讯作者:
Hu, Qiang