Characterization of physiological states of the suspended marine microalgae using polarized light scattering

Wang Yong; Dai Jincai; Liao Ran; Zhou Jin; Meng Fanqiang; Yao Yue; Chen Huirong; Tao Yi; Ma Hui

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Characterization of physiological states of the suspended marine microalgae using polarized light scattering

机译：偏光光散射悬浮海洋微藻生理状态的特征

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Physiological states of marine microalgal cells can influence photosynthesis efficiency, which affects approximately half of global carbon fixation. The detection of the algae physiological profiles is important for marine ecology and economy. In this paper, we propose a polarized light-scattering method to detect sensitive changes in the physiological states of the suspended marine microalgal cells. Our experimental setup is designed to measure the scattered polarization parameters of the cells suspended individually in the seawater. Two species of microalgal cells cultured in the laboratory were measured for several days. Experimental results showed that both species display distinctive changes in their polarized photon scattering features corresponding to changes in their physiological states. The changes are far more prominent than those displayed in unpolarized light scattering. Microscopy observations, simulations for microspheres of different diameters and refractive indices, or different shapes, indicated that the polarization features of the scattered photons are sensitive to the submicrometer microstructures of the cells. This study demonstrates the potential of the polarized light-scattering technique to characterize the physiological states of suspended marine microalgae. (C) 2020 Optical Society of America

机译：海洋微藻细胞的生理态可以影响光合作用效率，这影响了全球碳固定的大约一半。藻类生理型材的检测对于海洋生态和经济性很重要。在本文中，我们提出了一种偏振光散射法，以检测悬浮海洋微藻细胞的生理状态的敏感变化。我们的实验设置旨在测量在海水中单独悬挂的细胞的散射偏振参数。测量在实验室中培养的两种微藻细胞数几天。实验结果表明，两种物种在其偏光的光子散射特征中显示出与其生理状态的变化相对应的偏光变化。这些变化远远突出，而不是在非偏振光散射中显示的更突出。显微镜观测，不同直径和折射率的微球的模拟，或折射率或不同的形状，表明散射光子的偏振特征对细胞的亚微粒微观结构敏感。该研究表明，偏振光散射技术的潜力，以表征悬浮海洋微藻的生理状态。（c）2020美国光学学会

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《Applied optics》 |2020年第5期|共6页
作者
Wang Yong; Dai Jincai; Liao Ran; Zhou Jin; Meng Fanqiang; Yao Yue; Chen Huirong; Tao Yi; Ma Hui;
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Univ Technol Sch Sci Quantum Phys Lab Qingdao 266033 Peoples R China;

Tsinghua Univ Guangdong Engn Ctr Polarizat Technol Grad Sch Shenzhen Shenzhen Key Lab Minimal Invas Med Technol Shenzhen 518055 Peoples R China;

Tsinghua Univ Guangdong Engn Ctr Polarizat Technol Grad Sch Shenzhen Shenzhen Key Lab Minimal Invas Med Technol Shenzhen 518055 Peoples R China;

Tsinghua Univ Grad Sch AtShenzhen Div Ocean Sci &

Technol Shenzhen 518055 Peoples R China;

Tsinghua Univ Grad Sch AtShenzhen Div Ocean Sci &

Technol Shenzhen 518055 Peoples R China;

Tsinghua Univ Guangdong Engn Ctr Polarizat Technol Grad Sch Shenzhen Shenzhen Key Lab Minimal Invas Med Technol Shenzhen 518055 Peoples R China;

Shenzhen Univ Dept Ocean Sci Shenzhen 518060 Peoples R China;

Tsinghua Univ Guangdong Prov Engn Res Ctr Urban Water Recycling Grad Sch Shenzhen Shenzhen 518055 Peoples R China;

Tsinghua Univ Guangdong Engn Ctr Polarizat Technol Grad Sch Shenzhen Shenzhen Key Lab Minimal Invas Med Technol Shenzhen 518055 Peoples R China;

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Characterization of physiological states of the suspended marine microalgae using polarized light scattering

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