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Hu S, Chen Y, Qian C, Ren H, Liang X, Tao W, Chen Y, Wang J, Dong Y, Han J, Ouyang X, Huang X. Nuclear accumulation of rice UV-B photoreceptors is UV-B- and OsCOP1-independent for UV-B responses. Nat Commun 2024; 15:6396. [PMID: 39080288 PMCID: PMC11289442 DOI: 10.1038/s41467-024-50755-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 07/18/2024] [Indexed: 08/02/2024] Open
Abstract
In plants, the conserved plant-specific photoreceptor UV RESISTANCE LOCUS 8 (UVR8) perceives ultraviolet-B (UV-B) light and mediates UV-B-induced photomorphogenesis and stress acclimation. In this study, we reveal that UV-B light treatment shortens seedlings, increases stem thickness, and enhances UV-B stress tolerance in rice (Oryza sativa) via its two UV-B photoreceptors OsUVR8a and OsUVR8b. Although the rice and Arabidopsis (Arabidopsis thaliana) UVR8 (AtUVR8) photoreceptors all form monomers in response to UV-B light, OsUVR8a, and OsUVR8b function is only partially conserved with respect to AtUVR8 in UV-B-induced photomorphogenesis and stress acclimation. UV-B light and CONSTITUTIVELY PHOTOMORPHOGENIC 1 (COP1) promote the nuclear accumulation of AtUVR8; by contrast, OsUVR8a and OsUVR8b constitutively localize to the nucleus via their own nuclear localization signals, independently of UV-B light and the RING-finger mutation of OsCOP1. We show that OsCOP1 negatively regulates UV-B responses, and shows weak interaction with OsUVR8s, which is ascribed to the N terminus of OsCOP1, which is conserved in several monocots. Furthermore, transcriptome analysis demonstrates that UV-B-responsive gene expression differs globally between Arabidopsis and rice, illuminating the evolutionary divergence of UV-B light signaling pathways between monocot and dicot plants.
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Affiliation(s)
- Shan Hu
- State Key Laboratory of Cellular Stress Biology, Xiamen Key Laboratory of Plant Genetics, Faculty of Medicine and Life Sciences, School of Life Sciences, Xiamen University, Xiamen, China
| | - Yihan Chen
- State Key Laboratory of Cellular Stress Biology, Xiamen Key Laboratory of Plant Genetics, Faculty of Medicine and Life Sciences, School of Life Sciences, Xiamen University, Xiamen, China
| | - Chongzhen Qian
- State Key Laboratory of Cellular Stress Biology, Xiamen Key Laboratory of Plant Genetics, Faculty of Medicine and Life Sciences, School of Life Sciences, Xiamen University, Xiamen, China
| | - Hui Ren
- State Key Laboratory of Cellular Stress Biology, Xiamen Key Laboratory of Plant Genetics, Faculty of Medicine and Life Sciences, School of Life Sciences, Xiamen University, Xiamen, China
| | - Xinwen Liang
- State Key Laboratory of Cellular Stress Biology, Xiamen Key Laboratory of Plant Genetics, Faculty of Medicine and Life Sciences, School of Life Sciences, Xiamen University, Xiamen, China
| | - Wenjing Tao
- State Key Laboratory of Cellular Stress Biology, Xiamen Key Laboratory of Plant Genetics, Faculty of Medicine and Life Sciences, School of Life Sciences, Xiamen University, Xiamen, China
| | - Yanling Chen
- State Key Laboratory of Cellular Stress Biology, Xiamen Key Laboratory of Plant Genetics, Faculty of Medicine and Life Sciences, School of Life Sciences, Xiamen University, Xiamen, China
| | - Jue Wang
- State Key Laboratory of Cellular Stress Biology, Xiamen Key Laboratory of Plant Genetics, Faculty of Medicine and Life Sciences, School of Life Sciences, Xiamen University, Xiamen, China
| | - Yuan Dong
- State Key Laboratory of Cellular Stress Biology, Xiamen Key Laboratory of Plant Genetics, Faculty of Medicine and Life Sciences, School of Life Sciences, Xiamen University, Xiamen, China
| | - Jiupan Han
- State Key Laboratory of Cellular Stress Biology, Xiamen Key Laboratory of Plant Genetics, Faculty of Medicine and Life Sciences, School of Life Sciences, Xiamen University, Xiamen, China
| | - Xinhao Ouyang
- State Key Laboratory of Cellular Stress Biology, Xiamen Key Laboratory of Plant Genetics, Faculty of Medicine and Life Sciences, School of Life Sciences, Xiamen University, Xiamen, China.
| | - Xi Huang
- State Key Laboratory of Cellular Stress Biology, Xiamen Key Laboratory of Plant Genetics, Faculty of Medicine and Life Sciences, School of Life Sciences, Xiamen University, Xiamen, China.
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Fu H, Zhong J, Zhao J, Huo L, Wang C, Ma D, Pan W, Sun L, Ren Z, Fan T, Wang Z, Wang W, Lei X, Yu G, Li J, Zhu Y, Geelen D, Liu B. Ultraviolet attenuates centromere-mediated meiotic genome stability and alters gametophytic ploidy consistency in flowering plants. THE NEW PHYTOLOGIST 2024. [PMID: 39039772 DOI: 10.1111/nph.19978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Accepted: 06/29/2024] [Indexed: 07/24/2024]
Abstract
Ultraviolet (UV) radiation influences development and genome stability in organisms; however, its impact on meiosis, a special cell division essential for the delivery of genetic information across generations in eukaryotes, has not yet been elucidated. In this study, by performing cytogenetic studies, we reported that UV radiation does not damage meiotic chromosome integrity but attenuates centromere-mediated chromosome stability and induces unreduced gametes in Arabidopsis thaliana. We showed that functional centromere-specific histone 3 (CENH3) is required for obligate crossover formation and plays a role in the protection of sister chromatid cohesion under UV stress. Moreover, we found that UV specifically alters the orientation and organization of spindles and phragmoplasts at meiosis II, resulting in meiotic restitution and unreduced gametes. We determined that UV-induced meiotic restitution does not rely on the UV Resistance Locus8-mediated UV perception and the Tapetal Development and Function1- and Aborted Microspores-dependent tapetum development, but possibly occurs via altered JASON function and downregulated Parallel Spindle1. This study provides evidence that UV radiation influences meiotic genome stability and gametophytic ploidy consistency in flowering plants.
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Affiliation(s)
- Huiqi Fu
- College of Life Sciences, South-Central Minzu University, Wuhan, 430074, China
| | - Jiaqi Zhong
- College of Life Sciences, South-Central Minzu University, Wuhan, 430074, China
| | - Jiayi Zhao
- College of Life Sciences, South-Central Minzu University, Wuhan, 430074, China
| | - Li Huo
- College of Life Sciences, South-Central Minzu University, Wuhan, 430074, China
| | - Chong Wang
- Shanghai Key Laboratory of Plant Molecular Sciences, Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Dexuan Ma
- Shanghai Key Laboratory of Plant Molecular Sciences, Development Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Wenjing Pan
- College of Life Sciences, South-Central Minzu University, Wuhan, 430074, China
| | - Limin Sun
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, 9000, Belgium
| | - Ziming Ren
- Department of Landscape Architecture, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Tianyi Fan
- Department of Biochemistry, Institute of Plant Biology, School of Life Sciences, State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, Fudan University, Shanghai, 200438, China
| | - Ze Wang
- College of Tropical Crops, Hainan University, Haikou, 570228, China
| | - Wenyi Wang
- College of Life Sciences, South-Central Minzu University, Wuhan, 430074, China
| | - Xiaoning Lei
- School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Guanghui Yu
- College of Life Sciences, South-Central Minzu University, Wuhan, 430074, China
| | - Jing Li
- College of Tropical Crops, Hainan University, Haikou, 570228, China
| | - Yan Zhu
- Department of Biochemistry, Institute of Plant Biology, School of Life Sciences, State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, Fudan University, Shanghai, 200438, China
| | - Danny Geelen
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, 9000, Belgium
| | - Bing Liu
- College of Life Sciences, South-Central Minzu University, Wuhan, 430074, China
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3
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Molina-Montenegro MA, Egas C, Ballesteros G, Acuña-Rodríguez IS, San Martín F, Gianoli E. Sunspot activity influences tree growth: Molecular evidence and ecological implications. Mol Ecol 2024; 33:e16813. [PMID: 36479720 DOI: 10.1111/mec.16813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 11/08/2022] [Accepted: 11/22/2022] [Indexed: 12/12/2022]
Abstract
Solar activity has a significant influence on Earth's climate and may drive many biological processes. Here, we measured growth in 11 tree species distributed along an ≈600-km latitudinal gradient in South-Central Chile, recording the width of their growth-rings among periods of maximum (highest number of sunspots) and minimum (lowest number of sunspots) solar activity. In one of these species, Quillaja saponaria, we experimentally assessed three ecophysiological traits (CO2 fixation through photosynthesis [Amax], growth and leaf production) as well as the expression of five genes related to cell wall elongation and expansion following exposure to high and low levels of UV-B radiation, simulating scenarios of maximum and minimum solar activity, respectively. We found lower tree growth during the periods of maximum solar activity, with this trend being more evident at lower latitudes, where UV-B radiation is higher. Exposure of Q. saponaria to higher levels of UV-B affected the ecophysiological parameters, revealing a decrease in Amax, growth and leaf production. In addition, higher levels of UV-B led to repression in four of the five genes studied. Our results may help foresee environmental scenarios for different plant species associated with solar activity.
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Affiliation(s)
- Marco A Molina-Montenegro
- Centro de Ecología Integrativa, Instituto de Ciencias Biológicas, Universidad de Talca, Campus Lircay, Talca, Chile
- Centro de Investigación en Estudios Avanzados del Maule (CIEAM), Universidad Católica del Maule, Talca, Chile
| | - Claudia Egas
- Centro de Ecología Integrativa, Instituto de Ciencias Biológicas, Universidad de Talca, Campus Lircay, Talca, Chile
| | - Gabriel Ballesteros
- Instituto de Investigación Interdisciplinaria (I3), Universidad de Talca, Campus Lircay, Talca, Chile
| | - Ian S Acuña-Rodríguez
- Instituto de Investigación Interdisciplinaria (I3), Universidad de Talca, Campus Lircay, Talca, Chile
| | - Filoromo San Martín
- Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Concepción, Chile
| | - Ernesto Gianoli
- Departamento de Biología, Universidad de La Serena, La Serena, Chile
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4
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Liu W, Giuriani G, Havlikova A, Li D, Lamont DJ, Neugart S, Velanis CN, Petersen J, Hoecker U, Christie JM, Jenkins GI. Phosphorylation of Arabidopsis UVR8 photoreceptor modulates protein interactions and responses to UV-B radiation. Nat Commun 2024; 15:1221. [PMID: 38336824 PMCID: PMC10858049 DOI: 10.1038/s41467-024-45575-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 01/27/2024] [Indexed: 02/12/2024] Open
Abstract
Exposure of plants to ultraviolet-B (UV-B) radiation initiates transcriptional responses that modify metabolism, physiology and development to enhance viability in sunlight. Many of these regulatory responses to UV-B radiation are mediated by the photoreceptor UV RESISTANCE LOCUS 8 (UVR8). Following photoreception, UVR8 interacts directly with multiple proteins to regulate gene expression, but the mechanisms that control differential protein binding to initiate distinct responses are unknown. Here we show that UVR8 is phosphorylated at several sites and that UV-B stimulates phosphorylation at Serine 402. Site-directed mutagenesis to mimic Serine 402 phosphorylation promotes binding of UVR8 to REPRESSOR OF UV-B PHOTOMORPHOGENESIS (RUP) proteins, which negatively regulate UVR8 action. Complementation of the uvr8 mutant with phosphonull or phosphomimetic variants suggests that phosphorylation of Serine 402 modifies UVR8 activity and promotes flavonoid biosynthesis, a key UV-B-stimulated response that enhances plant protection and crop nutritional quality. This research provides a basis to understand how UVR8 interacts differentially with effector proteins to regulate plant responses to UV-B radiation.
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Affiliation(s)
- Wei Liu
- School of Molecular Biosciences, College of Medical, Veterinary and Life Sciences, Bower Building, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Giovanni Giuriani
- School of Molecular Biosciences, College of Medical, Veterinary and Life Sciences, Bower Building, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Anezka Havlikova
- School of Molecular Biosciences, College of Medical, Veterinary and Life Sciences, Bower Building, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Dezhi Li
- School of Molecular Biosciences, College of Medical, Veterinary and Life Sciences, Bower Building, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Douglas J Lamont
- FingerPrints Proteomics Facility, School of Life Sciences, Discovery Centre, University of Dundee, Dow Street, Dundee, DD1 5EH, UK
| | - Susanne Neugart
- Department of Crop Sciences, Division Quality and Sensory of Plant Products, Georg-August-Universität Göttingen, D-37075, Göttingen, Germany
| | - Christos N Velanis
- School of Molecular Biosciences, College of Medical, Veterinary and Life Sciences, Bower Building, University of Glasgow, Glasgow, G12 8QQ, UK
- School of Life, Health and Chemical Sciences, Faculty of Science, Technology, Engineering and Maths, Venables Building, The Open University, Walton Hall Campus, Milton Keynes, MK7 6AA, UK
| | - Jan Petersen
- School of Molecular Biosciences, College of Medical, Veterinary and Life Sciences, Bower Building, University of Glasgow, Glasgow, G12 8QQ, UK
- Matthias Schleiden Institute of Genetics, Bioinformatics and Molecular Botany, Friedrich Schiller University, 07743, Jena, Germany
| | - Ute Hoecker
- Botanical Institute and Cluster of Excellence on Plant Sciences (CEPLAS), Biocenter, University of Köln, 50923, Köln, Germany
| | - John M Christie
- School of Molecular Biosciences, College of Medical, Veterinary and Life Sciences, Bower Building, University of Glasgow, Glasgow, G12 8QQ, UK
| | - Gareth I Jenkins
- School of Molecular Biosciences, College of Medical, Veterinary and Life Sciences, Bower Building, University of Glasgow, Glasgow, G12 8QQ, UK.
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5
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Depaepe T, Vanhaelewyn L, Van Der Straeten D. UV-B responses in the spotlight: Dynamic photoreceptor interplay and cell-type specificity. PLANT, CELL & ENVIRONMENT 2023; 46:3194-3205. [PMID: 37554043 DOI: 10.1111/pce.14680] [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: 04/14/2023] [Revised: 07/26/2023] [Accepted: 07/30/2023] [Indexed: 08/10/2023]
Abstract
Plants are constantly exposed to a multitude of external signals, including light. The information contained within the full spectrum of light is perceived by a battery of photoreceptors, each with specific and shared signalling outputs. Recently, it has become clear that UV-B radiation is a vital component of the electromagnetic spectrum, guiding growth and being crucial for plant fitness. However, given the large overlap between UV-B specific signalling pathways and other photoreceptors, understanding how plants can distinguish UV-B specific signals from other light components deserves more scrutiny. With recent evidence, we propose that UV-B signalling and other light signalling pathways occur within distinct tissues and cell-types and that the contribution of each pathway depends on the type of response and the developmental stage of the plant. Elucidating the precise site(s) of action of each molecular player within these signalling pathways is key to fully understand how plants are able to orchestrate coordinated responses to light within the whole plant body. Focusing our efforts on the molecular study of light signal interactions to understand plant growth in natural environments in a cell-type specific manner will be a next step in the field of photobiology.
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Affiliation(s)
- Thomas Depaepe
- Laboratory of Functional Plant Biology, Department of Biology, Ghent University, Ghent, Belgium
| | - Lucas Vanhaelewyn
- Laboratory of Functional Plant Biology, Department of Biology, Ghent University, Ghent, Belgium
- Department of Agricultural Economics, Ghent University, Coupure Links 653 B-9000, Ghent, Belgium
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Abramova A, Vereshchagin M, Kulkov L, Kreslavski VD, Kuznetsov VV, Pashkovskiy P. Potential Role of Phytochromes A and B and Cryptochrome 1 in the Adaptation of Solanum lycopersicum to UV-B Radiation. Int J Mol Sci 2023; 24:13142. [PMID: 37685948 PMCID: PMC10488226 DOI: 10.3390/ijms241713142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 08/18/2023] [Accepted: 08/22/2023] [Indexed: 09/10/2023] Open
Abstract
UV-B causes both damage to the photosynthetic apparatus (PA) and the activation of specific mechanisms that protect the PA from excess energy and trigger a cascade of regulatory interactions with different photoreceptors, including phytochromes (PHYs) and cryptochromes (CRYs). However, the role of photoreceptors in plants' responses to UV-B radiation remains undiscovered. This study explores some of these responses using tomato photoreceptor mutants (phya, phyb1, phyab2, cry1). The effects of UV-B exposure (12.3 µmol (photons) m-2 s-1) on photosynthetic rates and PSII photochemical activity, the contents of photosynthetic and UV-absorbing pigments and anthocyanins, and the nonenzymatic antioxidant capacity (TEAC) were studied. The expression of key light-signaling genes, including UV-B signaling and genes associated with the biosynthesis of chlorophylls, carotenoids, anthocyanins, and flavonoids, was also determined. Under UV-B, phyab2 and cry1 mutants demonstrated a reduction in the PSII effective quantum yield and photosynthetic rate, as well as a reduced value of TEAC. At the same time, UV-B irradiation led to a noticeable decrease in the expression of the ultraviolet-B receptor (UVR8), repressor of UV-B photomorphogenesis 2 (RUP2), cullin 4 (CUL4), anthocyanidin synthase (ANT), phenylalanine ammonia-lease (PAL), and phytochrome B2 (PHYB2) genes in phyab2 and RUP2, CUL4, ANT, PAL, and elongated hypocotyl 5 (HY5) genes in the cry1 mutant. The results indicate the mutual regulation of UVR8, PHYB2, and CRY1 photoreceptors, but not PHYB1 and PHYA, in the process of forming a response to UV-B irradiation in tomato.
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Affiliation(s)
- Anna Abramova
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow 127276, Russia; (A.A.); (M.V.); (V.V.K.); (P.P.)
| | - Mikhail Vereshchagin
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow 127276, Russia; (A.A.); (M.V.); (V.V.K.); (P.P.)
| | - Leonid Kulkov
- Department of Technologies for the Production of Vegetable, Medicinal and Essential Oils, Russian State Agrarian University, Moscow Timiryazev Agricultural Academy, Timiryazevskaya Street 49, Moscow 127550, Russia;
| | - Vladimir D. Kreslavski
- Institute of Basic Biological Problems, Russian Academy of Sciences, Institutskaya Street 2, Pushchino 142290, Russia
| | - Vladimir V. Kuznetsov
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow 127276, Russia; (A.A.); (M.V.); (V.V.K.); (P.P.)
| | - Pavel Pashkovskiy
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Botanicheskaya Street 35, Moscow 127276, Russia; (A.A.); (M.V.); (V.V.K.); (P.P.)
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7
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Ruan Z, Lu M, Lin H, Chen S, Li P, Chen W, Xu H, Qiu D. Different photosynthetic responses of haploid and diploid Emiliania huxleyi (Prymnesiophyceae) to high light and ultraviolet radiation. BIORESOUR BIOPROCESS 2023; 10:40. [PMID: 38647570 PMCID: PMC10991182 DOI: 10.1186/s40643-023-00660-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 06/15/2023] [Indexed: 04/25/2024] Open
Abstract
Solar radiation varies quantitatively and qualitatively while penetrating through the seawater column and thus is one of the most important environmental factors shaping the vertical distribution pattern of phytoplankton. The haploid and diploid life-cycle phases of coccolithophores might have different vertical distribution preferences. Therefore, the two phases respond differently to high solar photosynthetically active radiation (PAR, 400-700 nm) and ultraviolet radiation (UVR, 280-400 nm). To test this, the haploid and diploid Emiliania huxleyi were exposed to oversaturating irradiance. In the presence of PAR alone, the effective quantum yield was reduced by 10% more due to the higher damage rate of photosystem II in haploid cells than in diploid cells. The addition of UVR resulted in further inhibition of the quantum yield for both haploid and diploid cells in the first 25 min, partly because of the increased damage of photosystem II. Intriguingly, this UVR-induced inhibition of the haploid cells completely recovered half an hour later. This recovery was confirmed by the comparable maximum quantum yields, maximum relative electron transport rates and yields of the haploid cells treated with PAR and PAR + UVR. Our data indicated that photosynthesis of the haploid phase was more sensitive to high visible light than the diploid phase but resistant to UVR-induced inhibition, reflecting the ecological niches to which this species adapts.
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Affiliation(s)
- Zuoxi Ruan
- STU-UNIVPM Joint Algal Research Center, Guangdong Provincial Key Laboratory of Marine Biotechnology, Marine Biology Institute, Shantou University, Shantou, 515063, Guangdong, China
| | - Meifang Lu
- STU-UNIVPM Joint Algal Research Center, Guangdong Provincial Key Laboratory of Marine Biotechnology, Marine Biology Institute, Shantou University, Shantou, 515063, Guangdong, China
| | - Hongmin Lin
- College of Pharmacy and Life Sciences, Jiujiang University, Jiujiang, 332005, Jiangxi, China
| | - Shanwen Chen
- STU-UNIVPM Joint Algal Research Center, Guangdong Provincial Key Laboratory of Marine Biotechnology, Marine Biology Institute, Shantou University, Shantou, 515063, Guangdong, China
| | - Ping Li
- STU-UNIVPM Joint Algal Research Center, Guangdong Provincial Key Laboratory of Marine Biotechnology, Marine Biology Institute, Shantou University, Shantou, 515063, Guangdong, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, 511458, Guangdong, China
| | - Weizhou Chen
- STU-UNIVPM Joint Algal Research Center, Guangdong Provincial Key Laboratory of Marine Biotechnology, Marine Biology Institute, Shantou University, Shantou, 515063, Guangdong, China
| | - Huijuan Xu
- CAS Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, Guangdong, China.
| | - Dajun Qiu
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, Guangdong, China.
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8
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Gao TT, Oh T, Mehta K, Huang YA, Camp T, Fan H, Han JW, Barnes CM, Zhang K. The clinical potential of optogenetic interrogation of pathogenesis. Clin Transl Med 2023; 13:e1243. [PMID: 37132114 PMCID: PMC10154842 DOI: 10.1002/ctm2.1243] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 04/05/2023] [Accepted: 04/13/2023] [Indexed: 05/04/2023] Open
Abstract
BACKGROUND Opsin-based optogenetics has emerged as a powerful biomedical tool using light to control protein conformation. Such capacity has been initially demonstrated to control ion flow across the cell membrane, enabling precise control of action potential in excitable cells such as neurons or muscle cells. Further advancement in optogenetics incorporates a greater variety of photoactivatable proteins and results in flexible control of biological processes, such as gene expression and signal transduction, with commonly employed light sources such as LEDs or lasers in optical microscopy. Blessed by the precise genetic targeting specificity and superior spatiotemporal resolution, optogenetics offers new biological insights into physiological and pathological mechanisms underlying health and diseases. Recently, its clinical potential has started to be capitalized, particularly for blindness treatment, due to the convenient light delivery into the eye. AIMS AND METHODS This work summarizes the progress of current clinical trials and provides a brief overview of basic structures and photophysics of commonly used photoactivable proteins. We highlight recent achievements such as optogenetic control of the chimeric antigen receptor, CRISPR-Cas system, gene expression, and organelle dynamics. We discuss conceptual innovation and technical challenges faced by current optogenetic research. CONCLUSION In doing so, we provide a framework that showcases ever-growing applications of optogenetics in biomedical research and may inform novel precise medicine strategies based on this enabling technology.
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Affiliation(s)
- Tianyu Terry Gao
- University of Illinois at Urbana‐ChampaignDepartment of BiochemistryUrbanaIllinoisUSA
| | - Teak‐Jung Oh
- University of Illinois at Urbana‐ChampaignDepartment of BiochemistryUrbanaIllinoisUSA
| | - Kritika Mehta
- University of Illinois at Urbana‐ChampaignDepartment of BiochemistryUrbanaIllinoisUSA
| | - Yu‐En Andrew Huang
- University of Illinois at Urbana‐ChampaignCenter for Biophysics and Quantitative BiologyUrbanaIllinoisUSA
| | - Tyler Camp
- University of Illinois at Urbana‐ChampaignDepartment of BiochemistryUrbanaIllinoisUSA
| | - Huaxun Fan
- University of Illinois at Urbana‐ChampaignDepartment of BiochemistryUrbanaIllinoisUSA
| | - Jeong Won Han
- University of Illinois at Urbana‐ChampaignDepartment of BiochemistryUrbanaIllinoisUSA
| | - Collin Michael Barnes
- University of Illinois at Urbana‐ChampaignDepartment of BiochemistryUrbanaIllinoisUSA
| | - Kai Zhang
- University of Illinois at Urbana‐ChampaignDepartment of BiochemistryUrbanaIllinoisUSA
- University of Illinois at Urbana‐ChampaignCenter for Biophysics and Quantitative BiologyUrbanaIllinoisUSA
- Cancer Center at IllinoisUniversity of Illinois at Urbana‐ChampaignUrbanaIllinoisUSA
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9
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Zhang Q, Lin L, Fang F, Cui B, Zhu C, Luo S, Yin R. Dissecting the functions of COP1 in the UVR8 pathway with a COP1 variant in Arabidopsis. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2023; 113:478-492. [PMID: 36495441 DOI: 10.1111/tpj.16059] [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: 09/08/2022] [Revised: 11/21/2022] [Accepted: 12/02/2022] [Indexed: 06/17/2023]
Abstract
COP1 is a critical repressor of plant photomorphogenesis in darkness. However, COP1 plays distinct roles in the photoreceptor UVR8 pathway in Arabidopsis thaliana. COP1 interacts with ultraviolet B (UV-B)-activated UVR8 monomers and promotes their retention and accumulation in the nucleus. Moreover, COP1 has a function in UV-B signaling, which involves the binding of its WD40 domain to UVR8 and HY5 via conserved Val-Pro (VP) motifs of these proteins. UV-B-activated UVR8 interacts with COP1 via both the core domain and the VP motif, leading to the displacement of HY5 from COP1 and HY5 stabilization. However, it remains unclear whether the function of COP1 in UV-B signaling is solely dependent on its VP motif binding capacity and whether UV-B regulates the subcellular localization of COP1. Based on published structures of the COP1 WD40 domain, we generated a COP1 variant with a single amino acid substitution, COP1C509S , which cannot bind to VP motifs but retains the ability to interact with the UVR8 core domain. UV-B only marginally increased nuclear YFP-COP1 levels and significantly promoted YFP-COP1 accumulation in the cytosol, but did not exert the same effects on YFP-COP1C509S . Thus, the full UVR8-COP1 interaction is important for COP1 accumulation in the cytosol. Notably, UV-B signaling including activation of HY5 transcription was obviously inhibited in the Arabidopsis lines expressing YFP-COP1C509S , which cannot bind VP motifs. We conclude that the full binding of UVR8 to COP1 leads to the predominant accumulation of COP1 in the cytosol and that COP1 has an additional function in UV-B signaling besides VP binding-mediated protein destabilization.
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Affiliation(s)
- Qianwen Zhang
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan RD. Minhang District, Shanghai, 200240, China
| | - Li Lin
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan RD. Minhang District, Shanghai, 200240, China
- Key Laboratory of Urban Agriculture Ministry of Agriculture, Shanghai Jiao Tong University, 200240, Shanghai, China
- Joint Center for Single Cell Biology, Shanghai Jiao Tong University, 200240, Shanghai, China
| | - Fang Fang
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan RD. Minhang District, Shanghai, 200240, China
| | - Beimi Cui
- Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, Edinburgh, EH9 3BF, UK
| | - Cheng Zhu
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Shukun Luo
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Ruohe Yin
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan RD. Minhang District, Shanghai, 200240, China
- Key Laboratory of Urban Agriculture Ministry of Agriculture, Shanghai Jiao Tong University, 200240, Shanghai, China
- Joint Center for Single Cell Biology, Shanghai Jiao Tong University, 200240, Shanghai, China
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10
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Wang L, Wang Y, Chang H, Ren H, Wu X, Wen J, Guan Z, Ma L, Qiu L, Yan J, Zhang D, Huang X, Yin P. RUP2 facilitates UVR8 redimerization via two interfaces. PLANT COMMUNICATIONS 2023; 4:100428. [PMID: 36065466 PMCID: PMC9860181 DOI: 10.1016/j.xplc.2022.100428] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 08/14/2022] [Accepted: 09/01/2022] [Indexed: 06/15/2023]
Abstract
The plant UV-B photoreceptor UV RESISTANCE LOCUS 8 (UVR8) exists as a homodimer in its inactive ground state. Upon UV-B exposure, UVR8 monomerizes and interacts with a downstream key regulator, the CONSTITUTIVE PHOTOMORPHOGENIC 1/SUPPRESSOR OF PHYA (COP1/SPA) E3 ubiquitin ligase complex, to initiate UV-B signaling. Two WD40 proteins, REPRESSOR OF UV-B PHOTOMORPHOGENESIS 1 (RUP1) and RUP2 directly interact with monomeric UVR8 and facilitate UVR8 ground state reversion, completing the UVR8 photocycle. Here, we reconstituted the RUP-mediated UVR8 redimerization process in vitro and reported the structure of the RUP2-UVR8W285A complex (2.0 Å). RUP2 and UVR8W285A formed a heterodimer via two distinct interfaces, designated Interface 1 and 2. The previously characterized Interface 1 is found between the RUP2 WD40 domain and the UVR8 C27 subregion. The newly identified Interface 2 is formed through interactions between the RUP2 WD40 domain and the UVR8 core domain. Disruption of Interface 2 impaired UV-B induced photomorphogenic development in Arabidopsis thaliana. Further biochemical analysis indicated that both interfaces are important for RUP2-UVR8 interactions and RUP2-mediated facilitation of UVR8 redimerization. Our findings suggest that the two-interface-interaction mode is adopted by both RUP2 and COP1 when they interact with UVR8, marking a step forward in understanding the molecular basis that underpins the interactions between UVR8 and its photocycle regulators.
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Affiliation(s)
- Lixia Wang
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, China
| | - Yidong Wang
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, China
| | - Hongfei Chang
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, China
| | - Hui Ren
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen 361102, China
| | - Xinquan Wu
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen 361102, China
| | - Jia Wen
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen 361102, China
| | - Zeyuan Guan
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, China
| | - Ling Ma
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, China
| | - Liang Qiu
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, China
| | - Junjie Yan
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, China
| | - Delin Zhang
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, China
| | - Xi Huang
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen 361102, China.
| | - Ping Yin
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan 430070, China.
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11
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Chen Z, Dong Y, Huang X. Plant responses to UV-B radiation: signaling, acclimation and stress tolerance. STRESS BIOLOGY 2022; 2:51. [PMID: 37676395 PMCID: PMC10441900 DOI: 10.1007/s44154-022-00076-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Accepted: 11/22/2022] [Indexed: 09/08/2023]
Abstract
Ultraviolet-B (UV-B) light is an intrinsic part of sunlight that reaches the earth's surface, and affects plant survival and adaptation. How plants respond to UV-B light is regulated by the wavelength, intensity and duration of UV-B radiation, and is also regulated by photosynthetically active radiation perceived by phytochrome and cryptochrome photoreceptors. Non-damaging UV-B light promotes plant photomorphogenesis and UV-B acclimation which enhances plant tolerance against UV-B stress. However, high-level UV-B radiation induces DNA damage, generates reactive oxygen species (ROS) and impairs photosynthesis. Plants have evolved efficient mechanisms to utilize informational UV-B signal, and protect themselves from UV-B stress. UV RESISTANCE LOCUS8 (UVR8) is a conserved plant-specific UV-B photoreceptor. It interacts with CONSTITUTIVELY PHOTOMORPHOGENIC1 (COP1) to initiate UV-B-specific light signaling and regulate UV-B responsive gene expression. A set of transcription factors such as ELONGATED HYPOCOTYL5 (HY5) function downstream of the UVR8-COP1 module to promote seedling de-etiolation for photomorphogenic development and biosynthesis of sunscreen flavonoids for UV-B stress tolerance. In addition to UVR8 signaling pathways, plants subjected to damaging UV-B radiation initiate stress protection and repair mechanisms through UVR8-independent pathways. In this review, we summarize the emerging mechanisms underlying UV-B stress acclimation and protection in plants, primarily revealed in the model plant Arabidopsis thaliana.
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Affiliation(s)
- Zhiren Chen
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, 361102, China
| | - Yuan Dong
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, 361102, China
| | - Xi Huang
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, 361102, China.
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12
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Fang F, Lin L, Zhang Q, Lu M, Skvortsova MY, Podolec R, Zhang Q, Pi J, Zhang C, Ulm R, Yin R. Mechanisms of UV-B light-induced photoreceptor UVR8 nuclear localization dynamics. THE NEW PHYTOLOGIST 2022; 236:1824-1837. [PMID: 36089828 PMCID: PMC9825989 DOI: 10.1111/nph.18468] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 08/22/2022] [Indexed: 06/15/2023]
Abstract
Light regulates the subcellular localization of plant photoreceptors, a key step in light signaling. Ultraviolet-B radiation (UV-B) induces the plant photoreceptor UV RESISTANCE LOCUS 8 (UVR8) nuclear accumulation, where it regulates photomorphogenesis. However, the molecular mechanism for the UV-B-regulated UVR8 nuclear localization dynamics is unknown. With fluorescence recovery after photobleaching (FRAP), cell fractionation followed by immunoblotting and co-immunoprecipitation (Co-IP) assays we tested the function of UVR8-interacting proteins including CONSTITUTIVELY PHOTOMORPHOGENIC 1 (COP1), REPRESSOR OF UV-B PHOTOMORPHOGENESIS 1 (RUP1) and RUP2 in the regulation of UVR8 nuclear dynamics in Arabidopsis thaliana. We showed that UV-B-induced rapid UVR8 nuclear translocation is independent of COP1, which previously was shown to be required for UV-B-induced UVR8 nuclear accumulation. Instead, we provide evidence that the UV-B-induced UVR8 homodimer-to-monomer photo-switch and the concurrent size reduction of UVR8 enables its monomer nuclear translocation, most likely via free diffusion. Nuclear COP1 interacts with UV-B-activated UVR8 monomer, thereby promoting UVR8 nuclear retention. Conversely, RUP1and RUP2, whose expressions are induced by UV-B, inhibit UVR8 nuclear retention via attenuating the UVR8-COP1 interaction, allowing UVR8 to exit the nucleus. Collectively, our data suggest that UV-B-induced monomerization of UVR8 promotes its nuclear translocation via free diffusion. In the nucleus, COP1 binding promotes UVR8 monomer nuclear retention, which is counterbalanced by the major negative regulators RUP1 and RUP2.
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Affiliation(s)
- Fang Fang
- School of Agriculture and BiologyShanghai Jiao Tong University800 Dongchuan Road, Minhang DistrictShanghai200240China
| | - Li Lin
- School of Agriculture and BiologyShanghai Jiao Tong University800 Dongchuan Road, Minhang DistrictShanghai200240China
- Key Laboratory of Urban Agriculture Ministry of AgricultureShanghai Jiao Tong UniversityShanghai200240China
- Joint Center for Single Cell BiologyShanghai Jiao Tong UniversityShanghai200240China
| | - Qianwen Zhang
- School of Agriculture and BiologyShanghai Jiao Tong University800 Dongchuan Road, Minhang DistrictShanghai200240China
| | - Min Lu
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghai200025China
| | - Mariya Y. Skvortsova
- Department of Botany and Plant Biology, Section of Biology, Faculty of SciencesUniversity of GenevaCH‐1211Geneva 4Switzerland
| | - Roman Podolec
- Department of Botany and Plant Biology, Section of Biology, Faculty of SciencesUniversity of GenevaCH‐1211Geneva 4Switzerland
- Institute of Genetics and Genomics of Geneva (iGE3)University of GenevaCH‐1211Geneva 4Switzerland
| | - Qinyun Zhang
- School of Agriculture and BiologyShanghai Jiao Tong University800 Dongchuan Road, Minhang DistrictShanghai200240China
| | - Jiahao Pi
- School of Agriculture and BiologyShanghai Jiao Tong University800 Dongchuan Road, Minhang DistrictShanghai200240China
| | - Chunli Zhang
- School of Agriculture and BiologyShanghai Jiao Tong University800 Dongchuan Road, Minhang DistrictShanghai200240China
| | - Roman Ulm
- Department of Botany and Plant Biology, Section of Biology, Faculty of SciencesUniversity of GenevaCH‐1211Geneva 4Switzerland
- Institute of Genetics and Genomics of Geneva (iGE3)University of GenevaCH‐1211Geneva 4Switzerland
| | - Ruohe Yin
- School of Agriculture and BiologyShanghai Jiao Tong University800 Dongchuan Road, Minhang DistrictShanghai200240China
- Key Laboratory of Urban Agriculture Ministry of AgricultureShanghai Jiao Tong UniversityShanghai200240China
- Joint Center for Single Cell BiologyShanghai Jiao Tong UniversityShanghai200240China
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