High-CO2 tolerance in microalgae: possible mechanisms and implications for biotechnology and bioremediation
High-CO2 tolerance in microalgae: possible mechanisms and implications for biotechnology and bioremediation
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DOI：
10.1007/s10529-013-1274-7
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发表时间：
2013-06
影响因子：
2.7
通讯作者：
A. Solovchenko;I. Khozin‐Goldberg
中科院分区：
文献类型：
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作者：
A. Solovchenko;I. Khozin‐Goldberg
微藻生物技术领域的最新进展，包括CO2生物刺激和耐极高CO2浓度（40-100 vol%）的新微藻物种的发现，重新引起了人们对光合自养生物高CO2耐受性的生理效应和机制的兴趣。光合机构状态转换增加ATP的产生，上调H+-ATP酶泵出细胞的质子，CO2浓缩机制的快速关闭，以及膜脂肪酸组成的调整目前被认为是控制细胞pH稳态的关键机制，因此微藻对高CO2水平的耐受性，这是极端微生物和共生物种的特征。管理驯化高CO2的机制包括本次审查的主题，并讨论了在使用CO2富集，以提高微藻培养的生产力，以及从烟道气中捕获碳的做法。
Recent developments in the field of microalgal biotechnology, including CO2biomitigation and the discovery of new species of microalgae that are tolerant to extremely high CO2levels (40–100 vol%), have renewed interest in the physiological effects and mechanisms of high-CO2tolerance in photoautotrophs. Photosynthetic apparatus state transitions that increase ATP generation, upregulation of H+-ATPases pumping protons out of the cell, rapid shutdown of CO2-concentrating mechanisms, and adjustment of membranes’ fatty acid composition are currently believed to be the key mechanisms governing cellular pH homeostasis and hence microalgae’s tolerance to high CO2levels, which is especially characteristic of extremophile and symbiotic species. The mechanisms governing acclimation to high CO2comprise the subject of this review and are discussed in view of the use of CO2enrichment to increase the productivity of microalgal cultures, as well as the practice of carbon capture from flue gases.