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Kondo M, Hancock AM, Kuwabara H, Adams PG, Dewa T. Photocurrent Generation by Plant Light-Harvesting Complexes is Enhanced by Lipid-Linked Chromophores in a Self-Assembled Lipid Membrane. J Phys Chem B 2025; 129:900-910. [PMID: 39782489 PMCID: PMC11770764 DOI: 10.1021/acs.jpcb.4c07402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Academic Contribution Register] [Received: 10/31/2024] [Revised: 12/20/2024] [Accepted: 12/27/2024] [Indexed: 01/12/2025]
Abstract
The light-harvesting pigment-protein complex II (LHCII) from plants can be used as a component for biohybrid photovoltaic devices, acting as a photosensitizer to increase the photocurrent generated when devices are illuminated with sunlight. LHCII is effective at photon absorption in the red and blue regions of the visible spectrum, however, it has low absorption in the green region (550-650 nm). Previous studies have shown that synthetic chromophores can be used to fill this spectral gap and transfer additional energy to LHCII, but it was uncertain whether this would translate into an improved performance for photovoltaics. In this study, we demonstrate amplified photocurrent generation from LHCII under green light illumination by coupling this protein to Texas Red (TR) chromophores that are coassembled into a lipid bilayer deposited onto electrodes. Absorption spectroscopy shows that LHCII and lipid-linked TR are successfully incorporated into lipid membranes and maintained on electrode surfaces. Photocurrent action spectra show that the increased absorption due to TR directly translates into a significant increase of photocurrent output from LHCII. However, the absolute magnitude of the photocurrent appears to be limited by the lipid bilayer acting as an insulator and the TR enhancement effect reaches a maximum due to protein, lipid or substrate-related quenching effects. Future work should be performed to optimize the use of extrinsic chromophores within novel biophotovoltaic devices.
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Affiliation(s)
- Masaharu Kondo
- Department
of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Ashley M. Hancock
- School
of Physics and Astronomy, University of
Leeds, Leeds LS2 9JT, U.K.
- Astbury
Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, U.K.
| | - Hayato Kuwabara
- Department
of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Peter G. Adams
- School
of Physics and Astronomy, University of
Leeds, Leeds LS2 9JT, U.K.
- Astbury
Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, U.K.
| | - Takehisa Dewa
- Department
of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
- Department
of Nanopharmaceutical Sciences, Nagoya Institute
of Technology, Gokiso-cho, Showa-ku, Nagoya 4668-8555, Japan
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Weliwatte NS, Grattieri M, Minteer SD. Rational design of artificial redox-mediating systems toward upgrading photobioelectrocatalysis. Photochem Photobiol Sci 2021; 20:1333-1356. [PMID: 34550560 PMCID: PMC8455808 DOI: 10.1007/s43630-021-00099-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Academic Contribution Register] [Received: 04/13/2021] [Accepted: 09/03/2021] [Indexed: 12/23/2022]
Abstract
Photobioelectrocatalysis has recently attracted particular research interest owing to the possibility to achieve sunlight-driven biosynthesis, biosensing, power generation, and other niche applications. However, physiological incompatibilities between biohybrid components lead to poor electrical contact at the biotic-biotic and biotic-abiotic interfaces. Establishing an electrochemical communication between these different interfaces, particularly the biocatalyst-electrode interface, is critical for the performance of the photobioelectrocatalytic system. While different artificial redox mediating approaches spanning across interdisciplinary research fields have been developed in order to electrically wire biohybrid components during bioelectrocatalysis, a systematic understanding on physicochemical modulation of artificial redox mediators is further required. Herein, we review and discuss the use of diffusible redox mediators and redox polymer-based approaches in artificial redox-mediating systems, with a focus on photobioelectrocatalysis. The future possibilities of artificial redox mediator system designs are also discussed within the purview of present needs and existing research breadth.
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Affiliation(s)
- N Samali Weliwatte
- Department of Chemistry, University of Utah, Salt Lake City, UT, 84112, USA
| | - Matteo Grattieri
- Dipartimento Di Chimica, Università Degli Studi Di Bari "Aldo Moro", Via E. Orabona 4, 70125, Bari, Italy.
- IPCF-CNR Istituto Per I Processi Chimico Fisici, Consiglio Nazionale Delle Ricerche, Via E. Orabona 4, 70125, Bari, Italy.
| | - Shelley D Minteer
- Department of Chemistry, University of Utah, Salt Lake City, UT, 84112, USA.
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Yuan Z, Ni X, Arif M, Dong Z, Zhang L, Tan X, Li J, Li C. Transcriptomic Analysis of the Photosynthetic, Respiration, and Aerenchyma Adaptation Strategies in Bermudagrass ( Cynodon dactylon) under Different Submergence Stress. Int J Mol Sci 2021; 22:ijms22157905. [PMID: 34360668 PMCID: PMC8347729 DOI: 10.3390/ijms22157905] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Academic Contribution Register] [Received: 06/14/2021] [Revised: 07/19/2021] [Accepted: 07/20/2021] [Indexed: 12/20/2022] Open
Abstract
Submergence impedes photosynthesis and respiration but facilitates aerenchyma formation in bermudagrass. Still, the regulatory genes underlying these physiological responses are unclear in the literature. To identify differentially expressed genes (DEGs) related to these physiological mechanisms, we studied the expression of DEGs in aboveground and underground tissues of bermudagrass after a 7 d treatment under control (CK), shallow submergence (SS), and deep submergence (DS). Results show that compared with CK, 12276 and 12559 DEGs were identified under SS and DS, respectively. Among them, the DEGs closely related to the metabolism of chlorophyll biosynthesis, light-harvesting, protein complex, and carbon fixation were down-regulated in SS and DS. Meanwhile, a large number of DEGs involved in starch and sucrose hydrolase activities, glycolysis/gluconeogenesis, tricarboxylic acid (TCA) cycle, and oxidative phosphorylation were down-regulated in aboveground tissues of bermudagrass in SS and DS. Whereas in underground tissues of bermudagrass these DEGs were all up-regulated under SS, only beta-fructofuranosidase and α-amylase related genes were up-regulated under DS. In addition, we found that DEGs associated with ethylene signaling, Ca2+-ROS signaling, and cell wall modification were also up-regulated during aerenchyma formation in underground tissues of bermudagrass under SS and DS. These results provide the basis for further exploration of the regulatory and functional genes related to the adaptability of bermudagrass to submergence.
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Affiliation(s)
- Zhongxun Yuan
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing 400715, China; (Z.Y.); (M.A.); (Z.D.); (L.Z.); (X.T.); (J.L.)
| | - Xilu Ni
- Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration of North-Western China, Key Lab for Restoration and Reconstruction of Degraded Ecosystem in North-Western China (Ministry of Education), Ningxia University, Yinchuan 750021, China;
| | - Muhammad Arif
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing 400715, China; (Z.Y.); (M.A.); (Z.D.); (L.Z.); (X.T.); (J.L.)
| | - Zhi Dong
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing 400715, China; (Z.Y.); (M.A.); (Z.D.); (L.Z.); (X.T.); (J.L.)
| | - Limiao Zhang
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing 400715, China; (Z.Y.); (M.A.); (Z.D.); (L.Z.); (X.T.); (J.L.)
| | - Xue Tan
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing 400715, China; (Z.Y.); (M.A.); (Z.D.); (L.Z.); (X.T.); (J.L.)
| | - Jiajia Li
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing 400715, China; (Z.Y.); (M.A.); (Z.D.); (L.Z.); (X.T.); (J.L.)
| | - Changxiao Li
- Key Laboratory of Eco-Environments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, College of Life Sciences, Southwest University, Chongqing 400715, China; (Z.Y.); (M.A.); (Z.D.); (L.Z.); (X.T.); (J.L.)
- Correspondence:
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