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Research progress on the mechanism of photosynthetic carbon metabolism in microalgae based on cyclic electron transport
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Ya-qi LIU1, Meng-qi ZHENG1, 2, *, Hong-yun ZHU1, Wei WANG1, Yu-hang GAO1, Bing-han XIE2, Peng XU3, Zhen-hu HU1
China Environmental Science | 2026, 46(3) : 1625 - 1637
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China Environmental Science | 2026, 46(3): 1625-1637
• Environmental Ecology •
Research progress on the mechanism of photosynthetic carbon metabolism in microalgae based on cyclic electron transport
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Ya-qi LIU1, Meng-qi ZHENG1, 2, *, Hong-yun ZHU1, Wei WANG1, Yu-hang GAO1, Bing-han XIE2, Peng XU3, Zhen-hu HU1
Affiliations
  • 1.Anhui Provincial Research Center for Rural Water Environment and Resources, College of Civil Engineering, Hefei University of Technology, Hefei 230009, China
  • 2.State Key Laboratory of Urban Water Resource and Environment, College of Environment, Harbin Institute of Technology, Harbin 150090, China
  • 3.Hunan Engineering Research Center of Water Security Technology and Application, College of Civil Engineering, Hunan University, Changsha 410082, China
Published: 2026-03-20
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Imbalance in photosynthetic electron transport caused by environmental stress impairs carbon assimilation, triggering CO2 release through processes like photorespiration. This exacerbates net carbon emissions and severely undermines microalgae's carbon sink function. As an energy allocation mechanism responding to environmental stress, cyclic electron transport (CET) compensates for the energy supply ratio of linear electron transport (LET) by independently regulating ATP synthesis, thereby safeguarding the photosynthetic system and maintaining its functionality. This review elucidates the activation mechanisms and photoprotective roles of CET in microalgae under various stress conditions, including high light, nutrient deficiency, CO2 limitation, and toxic environments such as heavy metals, organic pollutants, and emerging contaminants. It discusses how CET synergizes photoprotection with carbon fixation by dynamically elevating the ATP/NADPH ratio, thereby regulating Calvin cycle efficiency and directing carbon metabolic flux. Finally, the paper prospects future research directions for enhancing microalgal carbon sequestration under environmental stresses through CET regulation, aiming to provide references for improving microalgal carbon sink capacity and advancing environmental engineering practices like carbon-neutral water remediation.

microalgae  /  cyclic electron transport  /  photosynthetic carbon metabolism  /  stress responses  /  ATP/NADPH ratio
刘亚琪, 郑梦启, 朱鸿运, 汪韦, 高宇航, 谢冰涵, 徐鹏, 胡真虎. 基于环式电子传递的微藻光合碳代谢机理研究进展. 中国环境科学, 2026 , 46 (3) : 1625 -1637 .
Ya-qi LIU, Meng-qi ZHENG, Hong-yun ZHU, Wei WANG, Yu-hang GAO, Bing-han XIE, Peng XU, Zhen-hu HU. Research progress on the mechanism of photosynthetic carbon metabolism in microalgae based on cyclic electron transport[J]. China Environmental Science, 2026 , 46 (3) : 1625 -1637 .
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Year 2026 volume 46 Issue 3
73
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Article Info
  • Receive Date：2025-08-03
  • Online Date：2026-10-08
  • Published：2026-03-20
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History
  • Received：2025-08-03
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Affiliations
    1.Anhui Provincial Research Center for Rural Water Environment and Resources, College of Civil Engineering, Hefei University of Technology, Hefei 230009, China
    2.State Key Laboratory of Urban Water Resource and Environment, College of Environment, Harbin Institute of Technology, Harbin 150090, China
    3.Hunan Engineering Research Center of Water Security Technology and Application, College of Civil Engineering, Hunan University, Changsha 410082, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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