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Communication

In Situ Observation of Cellular Structure Changes in and Chain Segregations of Anabaena sp. PCC 7120 on TiO2 Films under a Photocatalytic Device

by
Xiaoxin Wang
1,2,3,*,
Jingtao Zhang
3,4,
Qi Li
3,5,
Ran Jia
1,
Mei Qiao
1 and
Wanling Cui
2
1
College of Physics and Electronics, Dezhou University, Dezhou 253000, China
2
Shandong Provincial Key Laboratory of Biophysics, Dezhou University, Dezhou 253000, China
3
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
4
College of Tobacco Science and Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China
5
Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
*
Author to whom correspondence should be addressed.
Molecules 2023, 28(20), 7200; https://doi.org/10.3390/molecules28207200
Submission received: 21 September 2023 / Revised: 17 October 2023 / Accepted: 17 October 2023 / Published: 20 October 2023
(This article belongs to the Special Issue Multifunctional Metal Oxides: Synthesis and Applications)
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Abstract

Cyanobacteria outbreaks are serious water pollution events, causing water crises around the world. Photocatalytic disinfection, as an effective approach, has been widely used to inhibit blue algae growth. In this study, a tiny reaction room containing a TiO2 film was designed to fulfill in situ optical observation of the destruction process of a one-dimensional multicellular microorganism, Anabaena sp. PCC 7120, which is also a typical bacterial strain causing water blooms. It was found that the fragment number increased exponentially with the activation time. The fracture mechanics of the algae chains were hypothesized to be the combining functions of increased local tensile stress originated from the cell contracting as well as the oxidative attacks coming from reactive oxygen species (ROSs). It was assumed that the oxidative species were the root cause of cellular structure changes in and chain fractures of Anabaena sp. PCC 7120 in the photocatalytic inactivation activity.
Keywords: in situ optical observation; chain fracture mechanism; photocatalytic inactivation in situ optical observation; chain fracture mechanism; photocatalytic inactivation

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MDPI and ACS Style

Wang, X.; Zhang, J.; Li, Q.; Jia, R.; Qiao, M.; Cui, W. In Situ Observation of Cellular Structure Changes in and Chain Segregations of Anabaena sp. PCC 7120 on TiO2 Films under a Photocatalytic Device. Molecules 2023, 28, 7200. https://doi.org/10.3390/molecules28207200

AMA Style

Wang X, Zhang J, Li Q, Jia R, Qiao M, Cui W. In Situ Observation of Cellular Structure Changes in and Chain Segregations of Anabaena sp. PCC 7120 on TiO2 Films under a Photocatalytic Device. Molecules. 2023; 28(20):7200. https://doi.org/10.3390/molecules28207200

Chicago/Turabian Style

Wang, Xiaoxin, Jingtao Zhang, Qi Li, Ran Jia, Mei Qiao, and Wanling Cui. 2023. "In Situ Observation of Cellular Structure Changes in and Chain Segregations of Anabaena sp. PCC 7120 on TiO2 Films under a Photocatalytic Device" Molecules 28, no. 20: 7200. https://doi.org/10.3390/molecules28207200

APA Style

Wang, X., Zhang, J., Li, Q., Jia, R., Qiao, M., & Cui, W. (2023). In Situ Observation of Cellular Structure Changes in and Chain Segregations of Anabaena sp. PCC 7120 on TiO2 Films under a Photocatalytic Device. Molecules, 28(20), 7200. https://doi.org/10.3390/molecules28207200

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