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Jin C, Zhu Y, You J, Yu Q, Liu Q, Zhou X. The regulation of light quality on the substance production and photosynthetic activity of Dunaliella bardawil. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2024; 252:112872. [PMID: 38401433 DOI: 10.1016/j.jphotobiol.2024.112872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 02/11/2024] [Accepted: 02/20/2024] [Indexed: 02/26/2024]
Abstract
To study the influence and regulation of light quality on the microalgal photosynthetic activity and production of biomass and substances, green alga Dunaliella bardawil was cultured in this study under the monochromatic red light (7R0B), blue light (0R7B), and their combinations with different ratios (xRyB, x + y = 7), as well as a control of white light (W). The results demonstrated that the only advantage for control W was its chlorophyll-a (Chl-a) and Chl-b contents. All substance production at 7R0B were much lower than at control W, except of glycerol. Compared to control W, protein production at 1R6B (259.22 mg/L) was 1.10 times greater, carbohydrate production at 0R7B (306.49 mg/L) was 1.34 times higher, lipid production at 3R4B (133.60 mg/L) was 1.36 times higher, and glycerol production at 4R3B (53.58 mg/L) was 1.13 times greater. In comparison to control W, there was the significant improvements of at least 19%, 20%, and 5%, respectively, in the values of potential maximal relative electron transport efficiency (rETRmax), light intensity with saturated rETR (IK), and actual photochemical efficiency of PSII (QYss) in treatments. The correlation analysis revealed that the content of carotenoids was closely related to non-photochemical quenching (NPQ). The test using Chl-a fluorescence transients (JIP-test) proved that red light inhibited electron transport from reduced Quinone A (QA-) to QB and resulted in a sharp increase in RC/CSm, and that the blue-dominated light enhanced electron transport from QA- to QB and from plastoquinone (PQ) to PSI receptor side. The photosynthetic parameters including Ψo, φEO, φRO, δRO, PIABS, PItotal, DFABS, and DFtotal, which were positively correlated with growth and substance production, were improved by blue-dominated light. The variations in the electron transport chain might provide the signals for metabolic regulation. The results of this study will be helpful to promote the production of Dunaliella bardawil under artificial illumination and to clarify the regulating mechanism of light quality on microalgal photosynthesis.
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Affiliation(s)
- Cuili Jin
- College of Environmental Science & Engineering, Yangzhou University, 196 Huayang West Street, Hanjiang District, Yangzhou City, Jiangsu Province, China; Marine Science & Technology Institute, Yangzhou University, 196 Huayang West Street, Hanjiang District, Yangzhou City, Jiangsu Province, China
| | - Yan Zhu
- College of Environmental Science & Engineering, Yangzhou University, 196 Huayang West Street, Hanjiang District, Yangzhou City, Jiangsu Province, China
| | - Jiajie You
- College of Environmental Science & Engineering, Yangzhou University, 196 Huayang West Street, Hanjiang District, Yangzhou City, Jiangsu Province, China
| | - Qiuyan Yu
- College of Environmental Science & Engineering, Yangzhou University, 196 Huayang West Street, Hanjiang District, Yangzhou City, Jiangsu Province, China
| | - Qing Liu
- College of Environmental Science & Engineering, Yangzhou University, 196 Huayang West Street, Hanjiang District, Yangzhou City, Jiangsu Province, China; Marine Science & Technology Institute, Yangzhou University, 196 Huayang West Street, Hanjiang District, Yangzhou City, Jiangsu Province, China
| | - Xiaojian Zhou
- College of Environmental Science & Engineering, Yangzhou University, 196 Huayang West Street, Hanjiang District, Yangzhou City, Jiangsu Province, China; Marine Science & Technology Institute, Yangzhou University, 196 Huayang West Street, Hanjiang District, Yangzhou City, Jiangsu Province, China.
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Hong Y, Yang L, You X, Zhang H, Xin X, Zhang Y, Zhou X. Effects of light quality on microalgae cultivation: bibliometric analysis, mini-review, and regulation approaches. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-31192-2. [PMID: 38015404 DOI: 10.1007/s11356-023-31192-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 11/19/2023] [Indexed: 11/29/2023]
Abstract
The ever-increasing concern for energy shortages and greenhouse effect has triggered the development of sustainable green technologies. Microalgae have received more attention due to the characteristics of biofuel production and CO2 fixation. From the perspective of autotrophic growth, the optimization of light quality has the potential to promote biomass production and bio-component accumulation in microalgae at low cost. In this study, bibliometric analysis was used to describe the basic features, identify the hotspots, and predict future trends of the research related to the light quality on microalgae cultivation. In addition, a mini-review referring to regulation methods of light quality was provided to optimize the framework of research. Results demonstrated that China has the greatest interest in this area. The destination of most research was to obtain biofuels and high-value-added products. Both blue and red lights were identified as the crucial spectrums for microalgae cultivation. However, sunlight is the most affordable light resource, which could not be fully utilized by microalgae through the photosynthetic process. Hence, some regulation approaches (e.g., dyes, plasmonic scattering, and carbon-based quantum dots) are proposed to increase the proportion of beneficial spectrum for enhancement of photosynthetic efficiency. In summary, this review introduces state-of-the-art research and provides theoretical guidance for light quality optimization in microalgae cultivation to obtain more benefits.
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Affiliation(s)
- Yongyuan Hong
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Libin Yang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China.
| | - Xiaogang You
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Haigeng Zhang
- Fishery Machinery and Instrument Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200092, China
| | - Xiaying Xin
- Department of Civil Engineering, Queen's University, Kingston, ON, K7L 3N6, Canada
| | - Yalei Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Xuefei Zhou
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
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Liu W, Ji Y, Long Y, Huang W, Zhang C, Wang H, Xu Y, Lei Z, Huang W, Liu D. The role of light wavelengths in regulating algal-bacterial granules formation, protein and lipid accumulation, and microbial functions. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 337:117750. [PMID: 36934501 DOI: 10.1016/j.jenvman.2023.117750] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 03/03/2023] [Accepted: 03/13/2023] [Indexed: 06/18/2023]
Abstract
High value-added products recovery from algal-bacterial granular sludge (ABGS) has received great attention recently. This study aimed to explore the role of different light wavelengths in regulating granule formation, protein and lipid production, and microbial functions. Bacterial granular sludge (BGS, R0) was most conducive to forming ABGS under blue (R2) light with the highest chlorophyll a (10.2 mg/g-VSS) and diameter (1800 μm), followed by red (R1) and white (R3) lights. R0-R3 acquired high protein contents (>164.8 mg/g-VSS) with essential amino acids above 44.4%, all of which were suitable for recycling, but R2 was the best. Also, blue light significantly increased total lipid production, while red light promoted the accumulation of some unsaturated fatty acids (C18:2 and C18:3). Some unique algae and dominant bacteria (e.g., Stigeoclonium, Chlamydomonas, and Flavobacteria) enrichment and some key functions (e.g., amino acid, fatty acid, and lipid biosynthesis) up-regulation in R2 might help to improve proteins and lipids quality. Combined, this study provides valuable guidance for protein and lipid recovery from ABGS.
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Affiliation(s)
- Wenhao Liu
- Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Yuan Ji
- Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Yuhan Long
- Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Weiwei Huang
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Hainan University, Renmin Road, Haikou 570228, China
| | - Chuanbing Zhang
- Huaxia Besince Environmental Technology Co., Ltd., Zhengzhou, Henan 450000, China
| | - Huifang Wang
- Huaxia Besince Environmental Technology Co., Ltd., Zhengzhou, Henan 450000, China
| | - Yahui Xu
- Huaxia Besince Environmental Technology Co., Ltd., Zhengzhou, Henan 450000, China
| | - Zhongfang Lei
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Wenli Huang
- Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
| | - Dongfang Liu
- Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
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Liu L, Xu Y, Yu C, Pan H, Wei C, Zhao X, Su M, Pan J. The efficient utilization of thiocyanate on simultaneous removal of ammonium and nitrate through thiosulfate-driven autotrophic denitrifiers and anammox. BIORESOURCE TECHNOLOGY 2023; 380:129069. [PMID: 37086926 DOI: 10.1016/j.biortech.2023.129069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 04/12/2023] [Accepted: 04/16/2023] [Indexed: 05/03/2023]
Abstract
The efficient utilization of thiocyanate remain be an important bottleneck in the low-cost nitrogen removal for wastewaters containing thiocyanate. The study aimed to investigate the feasibility of thiocyanate in removal of nitrate and ammonium through anammox (AN) and thiosulfate-driven autotrophic denitrifiers (TSAD). The results showed that removal of nitrate and ammonium were achieved rapidly utilizing thiocyanate, which was attributed to degradation of thiocyanate by TSAD and cooperation with AN. The utilization efficiency of thiocyanate in nitrogen removal was increased by 250% due to the microbial cooperation. Excess thiocyanate and ammonium did not influence the nitrogen removal amount. However, the nitrogen removal were affected obviously by the biomass ratio (XAN/XTSAD) between AN and TSAD Moreover, the dynamics related to removal of pollutants was described successfully by a modified Monod model with time constraints. These findings offer an insight for efficient utilization of thiocyanate in nitrogen removal via microbial cooperation.
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Affiliation(s)
- Liangliang Liu
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, PR China
| | - Yangjin Xu
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, PR China
| | - Cunxue Yu
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, PR China
| | - Hanping Pan
- Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, PR China
| | - Chaohai Wei
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, PR China
| | - XiuFang Zhao
- Ecological Science Institute, LingNan Eco & Culture-Tourism Co., Ltd., Dongguan 523125, PR China
| | - Meirong Su
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, PR China; Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, PR China
| | - Jianxin Pan
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, PR China.
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