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Song Z, Bian Y, Xiao Y, Xu D. B-BOX proteins:Multi-layered roles of molecular cogs in light-mediated growth and development in plants. JOURNAL OF PLANT PHYSIOLOGY 2024; 299:154265. [PMID: 38754343 DOI: 10.1016/j.jplph.2024.154265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Revised: 05/05/2024] [Accepted: 05/05/2024] [Indexed: 05/18/2024]
Abstract
B-box containing proteins (BBXs) are a class of zinc-ligating transcription factors or regulators that play essential roles in various physiological and developmental processes in plants. They not only directly associate with target genes to regulate their transcription, but also interact with other transcription factors to mediate target genes' expression, thus forming a complex transcriptional network ensuring plants' adaptation to dynamically changing light environments. This review summarizes and highlights the molecular and biochemical properties of BBXs, as well as recent advances with a focus on their critical regulatory functions in photomorphogenesis (de-etiolation), shade avoidance, photoperiodic-mediated flowering, and secondary metabolite biosynthesis and accumulation in plants.
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Affiliation(s)
- Zhaoqing Song
- Key Laboratory of Biology and Genetics Improvement of Soybean, Ministry of Agriculture, Zhongshan Biological Breeding Laboratory (ZSBBL), National Innovation Platform for Soybean Breeding and Industry-Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yeting Bian
- Key Laboratory of Biology and Genetics Improvement of Soybean, Ministry of Agriculture, Zhongshan Biological Breeding Laboratory (ZSBBL), National Innovation Platform for Soybean Breeding and Industry-Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yuntao Xiao
- Key Laboratory of Biology and Genetics Improvement of Soybean, Ministry of Agriculture, Zhongshan Biological Breeding Laboratory (ZSBBL), National Innovation Platform for Soybean Breeding and Industry-Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Dongqing Xu
- Key Laboratory of Biology and Genetics Improvement of Soybean, Ministry of Agriculture, Zhongshan Biological Breeding Laboratory (ZSBBL), National Innovation Platform for Soybean Breeding and Industry-Education Integration, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China.
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2
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Song Z, Ye W, Jiang Q, Lin H, Hu Q, Xiao Y, Bian Y, Zhao F, Dong J, Xu D. BBX9 forms feedback loops with PIFs and BBX21 to promote photomorphogenic development. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2024. [PMID: 39041924 DOI: 10.1111/jipb.13746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 06/29/2024] [Accepted: 07/05/2024] [Indexed: 07/24/2024]
Abstract
Light is one of the most essential environmental factors that tightly and precisely control various physiological and developmental processes in plants. B-box CONTAINING PROTEINs (BBXs) play central roles in the regulation of light-dependent development. In this study, we report that BBX9 is a positive regulator of light signaling. BBX9 interacts with the red light photoreceptor PHYTOCHROME B (phyB) and transcription factors PHYTOCHROME-INTERACTING FACTORs (PIFs). phyB promotes the stabilization of BBX9 in light, while BBX9 inhibits the transcriptional activation activity of PIFs. In turn, PIFs directly bind to the promoter of BBX9 to repress its transcription. On the other hand, BBX9 associates with the positive regulator of light signaling, BBX21, and enhances its biochemical activity. BBX21 associates with the promoter regions of BBX9 and transcriptionally up-regulates its expression. Collectively, this study unveiled that BBX9 forms a negative feedback loop with PIFs and a positive one with BBX21 to ensure that plants adapt to fluctuating light conditions.
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Affiliation(s)
- Zhaoqing Song
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Wanying Ye
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Qing Jiang
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Huan Lin
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Qing Hu
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yuntao Xiao
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yeting Bian
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Fengyue Zhao
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jie Dong
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058, China
| | - Dongqing Xu
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
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Wu R, Li Y, Wang L, Li Z, Wu R, Xu K, Liu Y. The DBB Family in Populus trichocarpa: Identification, Characterization, Evolution and Expression Profiles. Molecules 2024; 29:1823. [PMID: 38675643 PMCID: PMC11054233 DOI: 10.3390/molecules29081823] [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: 03/02/2024] [Revised: 04/12/2024] [Accepted: 04/15/2024] [Indexed: 04/28/2024] Open
Abstract
The B-box proteins (BBXs) encode a family of zinc-finger transcription factors that regulate the plant circadian rhythm and early light morphogenesis. The double B-box (DBB) family is in the class of the B-box family, which contains two conserved B-box domains and lacks a CCT (CO, CO-like and TOC1) motif. In this study, the identity, classification, structures, conserved motifs, chromosomal location, cis elements, duplication events, and expression profiles of the PtrDBB genes were analyzed in the woody model plant Populus trichocarpa. Here, 12 PtrDBB genes (PtrDBB1-PtrDBB12) were identified and classified into four distinct groups, and all of them were homogeneously spread among eight out of seventeen poplar chromosomes. The collinearity analysis of the DBB family genes from P. trichocarpa and two other species (Z. mays and A. thaliana) indicated that segmental duplication gene pairs and high-level conservation were identified. The analysis of duplication events demonstrates an insight into the evolutionary patterns of DBB genes. The previously published transcriptome data showed that PtrDBB genes represented distinct expression patterns in various tissues at different stages. In addition, it was speculated that several PtrDBBs are involved in the responsive to drought stress, light/dark, and ABA and MeJA treatments, which implied that they might function in abiotic stress and phytohormone responses. In summary, our results contribute to the further understanding of the DBB family and provide a reference for potential functional studies of PtrDBB genes in P. trichocarpa.
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Affiliation(s)
- Ruihua Wu
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (L.W.); (Z.L.); (R.W.); (K.X.)
| | - Yuxin Li
- Melbourne School of Design, The University of Melbourne, Parkville, VIC 3010, Australia;
| | - Lin Wang
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (L.W.); (Z.L.); (R.W.); (K.X.)
| | - Zitian Li
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (L.W.); (Z.L.); (R.W.); (K.X.)
| | - Runbin Wu
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (L.W.); (Z.L.); (R.W.); (K.X.)
| | - Kehang Xu
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (L.W.); (Z.L.); (R.W.); (K.X.)
| | - Yixin Liu
- College of Landscape Architecture and Art, Northwest A & F University, Yangling 712100, China
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Shi K, Zhao G, Li Z, Zhou J, Wu L, Tan X, Yuan J. Genome-Wide Identification of B-Box Gene Family and Candidate Light-Related Member Analysis of Tung Tree ( Vernicia fordii). Int J Mol Sci 2024; 25:1977. [PMID: 38396654 PMCID: PMC10888079 DOI: 10.3390/ijms25041977] [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: 12/18/2023] [Revised: 01/22/2024] [Accepted: 01/27/2024] [Indexed: 02/25/2024] Open
Abstract
Light is one of the most important environmental factors for plant growth. In the production process of tung oil tree cultivation, due to the inappropriate growth of shading conditions, the lower branches are often dry and dead, which seriously affects the yield of tung oil trees. However, little is known about the key factors of light-induced tree photomorphogenesis. In this study, a total of 22 VfBBX family members were identified to provide a reference for candidate genes in tung tree seedlings. All members of the VfBBX family have different numbers of highly conserved B-box domains or CCT domains. Phylogenetic evolution clustered the VfBBX genes into four categories, and the highest density of members was on chromosome 6. Interspecific collinearity analysis suggested that there were six pairs of duplicate genes in VfBBX members, but the expression levels of all family members in different growth and development stages of the tung tree were significantly divergent. After different degrees of shading treatment and physiological data determination of tung tree seedlings, the differential expression level and chlorophyll synthesis genes correlation analysis revealed that VfBBX9 was a typical candidate nuclear localization transcription factor that was significantly differentially expressed in light response. This study systematically identified the VfBBX gene family and provided a reference for studying its molecular function, enhanced the theoretical basis for tung tree breeding, and identified excellent varieties.
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Affiliation(s)
- Kai Shi
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha 410004, China; (K.S.); (G.Z.); (Z.L.); (J.Z.); (L.W.)
| | - Guang Zhao
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha 410004, China; (K.S.); (G.Z.); (Z.L.); (J.Z.); (L.W.)
- Hunan Forestry Seedling Breeding Demonstration Center, The Forestry Department of Hunan Province, Changsha 410329, China
| | - Ze Li
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha 410004, China; (K.S.); (G.Z.); (Z.L.); (J.Z.); (L.W.)
| | - Junqin Zhou
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha 410004, China; (K.S.); (G.Z.); (Z.L.); (J.Z.); (L.W.)
| | - Lingli Wu
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha 410004, China; (K.S.); (G.Z.); (Z.L.); (J.Z.); (L.W.)
| | - Xiaofeng Tan
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha 410004, China; (K.S.); (G.Z.); (Z.L.); (J.Z.); (L.W.)
| | - Jun Yuan
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, Changsha 410004, China; (K.S.); (G.Z.); (Z.L.); (J.Z.); (L.W.)
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Sui C, Cheng S, Wang D, Lv L, Meng H, Du M, Li J, Su P, Guo S. Systematic identification and characterization of the soybean ( Glycine max) B-box transcription factor family. BIOTECHNOL BIOTEC EQ 2023. [DOI: 10.1080/13102818.2022.2155570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Affiliation(s)
- Chao Sui
- Liaocheng University Crop Germplasm Innovation Research Institute, Agricultural Science and Engineering School, Liaocheng University, Liaocheng, PR China
| | - Shanshan Cheng
- Liaocheng University Crop Germplasm Innovation Research Institute, Agricultural Science and Engineering School, Liaocheng University, Liaocheng, PR China
| | - Deying Wang
- Liaocheng University Crop Germplasm Innovation Research Institute, Agricultural Science and Engineering School, Liaocheng University, Liaocheng, PR China
| | - Lujia Lv
- Liaocheng University Crop Germplasm Innovation Research Institute, Agricultural Science and Engineering School, Liaocheng University, Liaocheng, PR China
| | - Huiran Meng
- Liaocheng University Crop Germplasm Innovation Research Institute, Agricultural Science and Engineering School, Liaocheng University, Liaocheng, PR China
| | - Mengxue Du
- Liaocheng University Crop Germplasm Innovation Research Institute, Agricultural Science and Engineering School, Liaocheng University, Liaocheng, PR China
| | - Jingyu Li
- Liaocheng University Crop Germplasm Innovation Research Institute, Agricultural Science and Engineering School, Liaocheng University, Liaocheng, PR China
| | - Peisen Su
- Liaocheng University Crop Germplasm Innovation Research Institute, Agricultural Science and Engineering School, Liaocheng University, Liaocheng, PR China
| | - Shangjing Guo
- Liaocheng University Crop Germplasm Innovation Research Institute, Agricultural Science and Engineering School, Liaocheng University, Liaocheng, PR China
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Zhang B, Feng M, Zhang J, Song Z. Involvement of CONSTANS-like Proteins in Plant Flowering and Abiotic Stress Response. Int J Mol Sci 2023; 24:16585. [PMID: 38068908 PMCID: PMC10706179 DOI: 10.3390/ijms242316585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 11/13/2023] [Accepted: 11/14/2023] [Indexed: 12/18/2023] Open
Abstract
The process of flowering in plants is a pivotal stage in their life cycle, and the CONSTANS-like (COL) protein family, known for its photoperiod sensing ability, plays a crucial role in regulating plant flowering. Over the past two decades, homologous genes of COL have been identified in various plant species, leading to significant advancements in comprehending their involvement in the flowering pathway and response to abiotic stress. This article presents novel research progress on the structural aspects of COL proteins and their regulatory patterns within transcription complexes. Additionally, we reviewed recent information about their participation in flowering and abiotic stress response, aiming to provide a more comprehensive understanding of the functions of COL proteins.
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Affiliation(s)
- Bingqian Zhang
- Key Laboratory of Cotton Breeding and Cultivation in Huang-Huai-Hai Plain of Ministry of Agriculture and Rural Affairs, Institute of Industrial Crops, Shandong Academy of Agricultural Sciences, Jinan 250100, China; (B.Z.); (M.F.); (J.Z.)
- College of Life Science, Shandong Normal University, Jinan 250358, China
| | - Minghui Feng
- Key Laboratory of Cotton Breeding and Cultivation in Huang-Huai-Hai Plain of Ministry of Agriculture and Rural Affairs, Institute of Industrial Crops, Shandong Academy of Agricultural Sciences, Jinan 250100, China; (B.Z.); (M.F.); (J.Z.)
- College of Life Science, Shandong Normal University, Jinan 250358, China
| | - Jun Zhang
- Key Laboratory of Cotton Breeding and Cultivation in Huang-Huai-Hai Plain of Ministry of Agriculture and Rural Affairs, Institute of Industrial Crops, Shandong Academy of Agricultural Sciences, Jinan 250100, China; (B.Z.); (M.F.); (J.Z.)
- College of Life Science, Shandong Normal University, Jinan 250358, China
| | - Zhangqiang Song
- Key Laboratory of Cotton Breeding and Cultivation in Huang-Huai-Hai Plain of Ministry of Agriculture and Rural Affairs, Institute of Industrial Crops, Shandong Academy of Agricultural Sciences, Jinan 250100, China; (B.Z.); (M.F.); (J.Z.)
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Liu X, Sun W, Ma B, Song Y, Guo Q, Zhou L, Wu K, Zhang X, Zhang C. Genome-wide analysis of blueberry B-box family genes and identification of members activated by abiotic stress. BMC Genomics 2023; 24:584. [PMID: 37789264 PMCID: PMC10546702 DOI: 10.1186/s12864-023-09704-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 09/27/2023] [Indexed: 10/05/2023] Open
Abstract
BACKGROUND B-box (BBX) proteins play important roles in regulating plant growth, development, and abiotic stress responses. BBX family genes have been identified and functionally characterized in many plant species, but little is known about the BBX family in blueberry (Vaccinium corymbosum). RESULT In this study, we identified 23 VcBBX genes from the Genome Database for Vaccinium (GDV). These VcBBXs can be divided into five clades based on gene structures and conserved domains in their encoded proteins. The prediction of cis-acting elements in the upstream sequences of VcBBX genes and protein-protein interactions indicated that VcBBX proteins are likely involved in phytohormone signaling pathways and abiotic stress responses. Analysis of transcriptome deep sequencing (RNA-seq) data showed that VcBBX genes exhibited organ-specific expression pattern and 11 VcBBX genes respond to ultraviolet B (UV-B) radiation. The co-expression analysis revealed that the encoded 11 VcBBX proteins act as bridges integrating UV-B and phytohormone signaling pathways in blueberry under UV-B radiation. Reverse-transcription quantitative PCR (RT-qPCR) analysis showed that most VcBBX genes respond to drought, salt, and cold stress. Among VcBBX proteins, VcBBX24 is highly expressed in all the organs, not only responds to abiotic stress, but it also interacts with proteins in UV-B and phytohormone signaling pathways, as revealed by computational analysis and co-expression analysis, and might be an important regulator integrating abiotic stress and phytohormone signaling networks. CONCLUSIONS Twenty-three VcBBX genes were identified in blueberry, in which, 11 VcBBX genes respond to UV-B radiation, and act as bridges integrating UV-B and phytohormone signaling pathways according to RNA-seq data. The expression patterns under abiotic stress suggested that the functional roles of most VcBBX genes respose to drought, salt, and cold stress. Our study provides a useful reference for functional analysis of VcBBX genes and for improving abiotic stress tolerance in blueberry.
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Affiliation(s)
- Xiaoming Liu
- College of Plant Science, Jilin University, Changchun, 130062, China
| | - Wenying Sun
- College of Plant Science, Jilin University, Changchun, 130062, China
| | - Bin Ma
- College of Plant Science, Jilin University, Changchun, 130062, China
| | - Yan Song
- College of Plant Science, Jilin University, Changchun, 130062, China
| | - Qingxun Guo
- College of Plant Science, Jilin University, Changchun, 130062, China
| | - Lianxia Zhou
- College of Plant Science, Jilin University, Changchun, 130062, China
| | - Kuishen Wu
- College of Animal Science, Jilin University, Changchun, 130062, China
| | - Xinsheng Zhang
- College of Plant Science, Jilin University, Changchun, 130062, China
| | - Chunyu Zhang
- College of Plant Science, Jilin University, Changchun, 130062, China.
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Guo M, Yang G, Meng X, Zhang T, Li C, Bai S, Zhao X. Illuminating plant-microbe interaction: How photoperiod affects rhizosphere and pollutant removal in constructed wetland? ENVIRONMENT INTERNATIONAL 2023; 179:108144. [PMID: 37586276 DOI: 10.1016/j.envint.2023.108144] [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: 05/13/2023] [Revised: 07/18/2023] [Accepted: 08/11/2023] [Indexed: 08/18/2023]
Abstract
Rhizosphere is a crucial area in comprehending the interaction between plants and microorganisms in constructed wetlands (CWs). However, influence of photoperiod, a key factor that regulates photosynthesis and rhizosphere microbial activity, remains largely unknown. This study investigated the effect of photoperiod (9, 12, 15 h/day) on pollutant removal and underlying mechanisms. Results showed that 15-hour photoperiod treatment exhibited the highest removal efficiencies for COD (87.26%), TN (63.32%), and NO3--N (97.79%). This treatment enhanced photosynthetic pigmentation and root activity, which increased transport of oxygen and soluble organic carbon to rhizosphere, thus promoting microbial nitrification and denitrification. Microbial community analysis revealed a more stable co-occurrence network due to increased complexity and aggregation in the 15-hour photoperiod treatment. Phaselicystis was identified as a key connector, which was responsible for transferring necessary carbon sources, ATP, and electron donors that supported and optimized nitrogen metabolism in the CWs. Structural equation model analysis emphasized the importance of plant-microbe interactions in pollutant removal through increased substance, information, and energy exchange. These findings offer valuable insights for CWs design and operation in various latitudes and rural areas for small-scale decentralized systems.
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Affiliation(s)
- Mengran Guo
- College of Resource and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Genji Yang
- College of Resource and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Xiangwei Meng
- College of Resource and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Tuoshi Zhang
- College of Resource and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Chunyan Li
- College of Resource and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Shunwen Bai
- School of Environment, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Xinyue Zhao
- College of Resource and Environment, Northeast Agricultural University, Harbin 150030, China.
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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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Zhu Y, Zhu G, Xu R, Jiao Z, Yang J, Lin T, Wang Z, Huang S, Chong L, Zhu J. A natural promoter variation of SlBBX31 confers enhanced cold tolerance during tomato domestication. PLANT BIOTECHNOLOGY JOURNAL 2023; 21:1033-1043. [PMID: 36704926 PMCID: PMC10106858 DOI: 10.1111/pbi.14016] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 01/18/2023] [Accepted: 01/20/2023] [Indexed: 05/04/2023]
Abstract
Cold stress affects crop growth and productivity worldwide. Understanding the genetic basis of cold tolerance in germplasms is critical for crop improvement. Plants can coordinate environmental stimuli of light and temperature to regulate cold tolerance. However, it remains unknown which gene in germplasms could have such function. Here, we utilized genome-wide association study (GWAS) to investigate the cold tolerance of wild and cultivated tomato accessions and discovered that increased cold tolerance is accompanied with tomato domestication. We further identified a 27-bp InDel in the promoter of the CONSTANS-like transcription factor (TF) SlBBX31 is significantly linked with cold tolerance. Coincidentally, a key regulator of light signalling, SlHY5, can directly bind to the SlBBX31 promoter to activate SlBBX31 transcription while the 27-bp InDel can prevent S1HY5 from transactivating SlBBX31. Parallel to these findings, we observed that the loss of function of SlBBX31 results in impaired tomato cold tolerance. SlBBX31 can also modulate the cold-induced expression of several ERF TFs including CBF2 and DREBs. Therefore, our study has uncovered that SlBBX31 is possibly selected during tomato domestication for cold tolerance regulation, providing valuable insights for the development of hardy tomato varieties.
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Affiliation(s)
- Yingfang Zhu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life SciencesHenan UniversityKaifengChina
- Sanya Institute of Henan UniversitySanyaHainanChina
| | - Guangtao Zhu
- Yunnan Key Laboratory of Potato Biology, The AGISCAAS‐YNNU Joint Academy of Potato SciencesYunnan Normal UniversityKunmingChina
| | - Rui Xu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life SciencesHenan UniversityKaifengChina
| | - Zhixin Jiao
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life SciencesHenan UniversityKaifengChina
| | - Junwei Yang
- College of HorticultureChina Agricultural UniversityBeijingChina
| | - Tao Lin
- College of HorticultureChina Agricultural UniversityBeijingChina
| | - Zhen Wang
- School of Life SciencesAnhui Agricultural UniversityHefeiAnhuiChina
| | - Sanwen Huang
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural SciencesShenzhenChina
| | - Leelyn Chong
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life SciencesHenan UniversityKaifengChina
| | - Jian‐Kang Zhu
- Institute of Advanced Biotechnology and School of Life SciencesSouthern University of Science and TechnologyShenzhenChina
- Center for Advanced Bioindustry TechnologiesChinese Academy of Agricultural SciencesBeijingChina
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11
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Zhou Y, Li Y, Yu T, Li J, Qiu X, Zhu C, Liu J, Dang F, Yang Y. Characterization of the B-BOX gene family in pepper and the role of CaBBX14 in defense response against Phytophthora capsici infection. Int J Biol Macromol 2023; 237:124071. [PMID: 36958453 DOI: 10.1016/j.ijbiomac.2023.124071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 02/12/2023] [Accepted: 03/05/2023] [Indexed: 03/25/2023]
Abstract
The B-box (BBX) transcription factors are widely implicated in plant growth, development, and response to various biotic and abiotic stresses. However, their roles in the response of pepper to Phytophthora capsici infection (PCI) remain largely unexplored. Here, we report a total of 25 CaBBX genes with an uneven distribution were identified in pepper genome, and their characteristics, phylogenetic relationships, gene structures, conserved domains, and expression profiles were validated. CaBBXs were classified into five major clades (I to V) based on their phylogenetic relationships and conserved domains (presence of one or two B-box domains and a CCT domain). Gene duplication analysis demonstrated that there are two segmental duplication events but no tandem duplication event within pepper genome. Conserved motif and gene structure analysis revealed that the CaBBXs in the same clade have relatively similar motif arrangements and exon-intron patterns. Expression analysis revealed that the CaBBX genes have different expression levels in various tissues, and some of which were significantly induced during PCI and exogenous salicylic acid (SA) treatment. Among them, CaBBX14 displayed remarkable changed expression during PCI and SA treatment. The silencing of CaBBX14 increases pepper susceptibility to PCI, and also decreases in SA content and expression of pathogenesis-related (PR) and SA-related genes compared with control plants. Together, these findings advance our knowledge base on biological functions of CaBBXs in pepper during PCI through the SA signaling pathway, and we provide an example demonstrating that the potential of CaBBX14 to improve pepper resistance to PCI.
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Affiliation(s)
- Yong Zhou
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits & Vegetables, Collaborative Innovation Center of Post-Harvest Key Technology and Quality Safety of Fruits and Vegetables, Jiangxi Agricultural University, Nanchang 330045, China; Key Laboratory of Crop Physiology, Ecology, and Genetic Breeding, Ministry of Education, Jiangxi Agricultural University, Nanchang 330045, China
| | - Yu Li
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits & Vegetables, Collaborative Innovation Center of Post-Harvest Key Technology and Quality Safety of Fruits and Vegetables, Jiangxi Agricultural University, Nanchang 330045, China
| | - Ting Yu
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits & Vegetables, Collaborative Innovation Center of Post-Harvest Key Technology and Quality Safety of Fruits and Vegetables, Jiangxi Agricultural University, Nanchang 330045, China
| | - Jingwen Li
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits & Vegetables, Collaborative Innovation Center of Post-Harvest Key Technology and Quality Safety of Fruits and Vegetables, Jiangxi Agricultural University, Nanchang 330045, China
| | - Xuewen Qiu
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits & Vegetables, Collaborative Innovation Center of Post-Harvest Key Technology and Quality Safety of Fruits and Vegetables, Jiangxi Agricultural University, Nanchang 330045, China
| | - Chuxia Zhu
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits & Vegetables, Collaborative Innovation Center of Post-Harvest Key Technology and Quality Safety of Fruits and Vegetables, Jiangxi Agricultural University, Nanchang 330045, China
| | - Jianping Liu
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits & Vegetables, Collaborative Innovation Center of Post-Harvest Key Technology and Quality Safety of Fruits and Vegetables, Jiangxi Agricultural University, Nanchang 330045, China
| | - Fengfeng Dang
- Shaanxi Key Laboratory of Chinese Jujube, Yan'an University, Yan'an, Shaanxi 716000, China.
| | - Youxin Yang
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits & Vegetables, Collaborative Innovation Center of Post-Harvest Key Technology and Quality Safety of Fruits and Vegetables, Jiangxi Agricultural University, Nanchang 330045, China.
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12
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Wang Y, Xiao Y, Sun Y, Zhang X, Du B, Turupu M, Yao Q, Gai S, Tong S, Huang J, Li T. Two B-box proteins, PavBBX6/9, positively regulate light-induced anthocyanin accumulation in sweet cherry. PLANT PHYSIOLOGY 2023:kiad137. [PMID: 36930566 DOI: 10.1093/plphys/kiad137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 02/03/2023] [Indexed: 06/18/2023]
Abstract
Anthocyanin production in bicolored sweet cherry (Prunus avium cv. Rainier) fruit is induced by light exposure, leading to red coloration. The phytohormone abscisic acid (ABA) is essential for this process, but the regulatory relationships that link light and ABA with anthocyanin-associated coloration are currently unclear. In this study, we determined that light treatment of bicolored sweet cherry fruit increased anthocyanin accumulation and induced ABA production and that ABA participates in light-modulated anthocyanin accumulation in bicolored sweet cherry. Two B-box (BBX) genes, PavBBX6/9, were highly induced by light and ABA treatments, as was anthocyanin accumulation. The ectopic expression of PavBBX6 or PavBBX9 in Arabidopsis (Arabidopsis thaliana) increased anthocyanin biosynthesis and ABA accumulation. Overexpressing PavBBX6 or PavBBX9 in sweet cherry calli also enhanced light-induced anthocyanin biosynthesis and ABA accumulation. Additionally, transient overexpression of PavBBX6 or PavBBX9 in sweet cherry peel increased anthocyanin and ABA contents, whereas silencing either gene had the opposite effects. PavBBX6 and PavBBX9 directly bound to the G-box elements in the promoter of UDP glucose-flavonoid-3-O-glycosyltransferase (PavUFGT), a key gene for anthocyanin biosynthesis, and 9-cis-epoxycarotenoid dioxygenase 1 (PavNCED1), a key gene for ABA biosynthesis, and enhanced their activities. These results suggest that PavBBX6 and PavBBX9 positively regulate light-induced anthocyanin and ABA biosynthesis by promoting PavUFGT and PavNCED1 expression, respectively. Our study provides insights into the relationship between the light-induced ABA biosynthetic pathway and anthocyanin accumulation in bicolored sweet cherry fruit.
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Affiliation(s)
- Yanyan Wang
- Department of Pomology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Yuqin Xiao
- Department of Pomology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Yueting Sun
- Department of Pomology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Xiang Zhang
- Department of Pomology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Bingyang Du
- Department of Pomology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Maihemuti Turupu
- Department of Pomology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Qisheng Yao
- Department of Pomology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Shilin Gai
- Department of Pomology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Shi Tong
- Department of Pomology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Jing Huang
- Department of Pomology, College of Horticulture, China Agricultural University, Beijing, 100193, China
| | - Tianhong Li
- Department of Pomology, College of Horticulture, China Agricultural University, Beijing, 100193, China
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13
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Medina-Fraga AL, Chinen LA, Demkura PV, Lichy MZ, Gershenzon J, Ballaré CL, Crocco CD. AtBBX29 integrates photomorphogenesis and defense responses in Arabidopsis. Photochem Photobiol Sci 2023:10.1007/s43630-023-00391-8. [PMID: 36807054 DOI: 10.1007/s43630-023-00391-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 02/03/2023] [Indexed: 02/21/2023]
Abstract
Light is an environmental signal that modulates plant defenses against attackers. Recent research has focused on the effects of light on defense hormone signaling; however, the connections between light signaling pathways and the biosynthesis of specialized metabolites involved in plant defense have been relatively unexplored. Here, we show that Arabidopsis BBX29, a protein that belongs to the B-Box transcription factor (TF) family, integrates photomorphogenic signaling with defense responses by promoting flavonoid, sinapate and glucosinolate accumulation in Arabidopsis leaves. AtBBX29 transcript levels were up regulated by light, through photoreceptor signaling pathways. Genetic evidence indicated that AtBBX29 up-regulates MYB12 gene expression, a TF known to induce genes related to flavonoid biosynthesis in a light-dependent manner, and MYB34 and MYB51, which encode TFs involved in the regulation of glucosinolate biosynthesis. Thus, bbx29 knockout mutants displayed low expression levels of key genes of the flavonoid biosynthetic pathway, and the opposite was true in BBX29 overexpression lines. In agreement with the transcriptomic data, bbx29 mutant plants accumulated lower levels of kaempferol glucosides, sinapoyl malate, indol-3-ylmethyl glucosinolate (I3M), 4-methylsulfinylbutyl glucosinolate (4MSOB) and 3-methylthiopropyl glucosinolate (3MSP) in rosette leaves compared to the wild-type, and showed increased susceptibility to the necrotrophic fungus Botrytis cinerea and to the herbivore Spodoptera frugiperda. In contrast, BBX29 overexpressing plants displayed increased resistance to both attackers. In addition, we found that AtBBX29 plays an important role in mediating the effects of ultraviolet-B (UV-B) radiation on plant defense against B. cinerea. Taken together, these results suggest that AtBBX29 orchestrates the accumulation of specific light-induced metabolites and regulates Arabidopsis resistance against pathogens and herbivores.
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Affiliation(s)
- Ana L Medina-Fraga
- Facultad de Agronomía, IFEVA, Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad de Buenos Aires, Av. San Martín 4453, C1417DSE, Ciudad Autónoma de Buenos Aires, Argentina
| | - Lucas A Chinen
- Facultad de Agronomía, IFEVA, Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad de Buenos Aires, Av. San Martín 4453, C1417DSE, Ciudad Autónoma de Buenos Aires, Argentina
| | - Patricia V Demkura
- Facultad de Agronomía, IFEVA, Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad de Buenos Aires, Av. San Martín 4453, C1417DSE, Ciudad Autónoma de Buenos Aires, Argentina
| | - Micaela Z Lichy
- Facultad de Agronomía, IFEVA, Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad de Buenos Aires, Av. San Martín 4453, C1417DSE, Ciudad Autónoma de Buenos Aires, Argentina
| | - Jonathan Gershenzon
- Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Carlos L Ballaré
- Facultad de Agronomía, IFEVA, Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad de Buenos Aires, Av. San Martín 4453, C1417DSE, Ciudad Autónoma de Buenos Aires, Argentina
- IIBIO, Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad Nacional de San Martín, B1650HMP, Buenos Aires, Argentina
| | - Carlos D Crocco
- Facultad de Agronomía, IFEVA, Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad de Buenos Aires, Av. San Martín 4453, C1417DSE, Ciudad Autónoma de Buenos Aires, Argentina.
- Department of Plant Sciences, Section of Biology, Faculty of Sciences, University of Geneva, 1211, Geneva 4, Switzerland.
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14
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Cao J, Yuan J, Zhang Y, Chen C, Zhang B, Shi X, Niu R, Lin F. Multi-layered roles of BBX proteins in plant growth and development. STRESS BIOLOGY 2023; 3:1. [PMID: 37676379 PMCID: PMC10442040 DOI: 10.1007/s44154-022-00080-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 12/18/2022] [Indexed: 09/08/2023]
Abstract
Light and phytohormone are external and internal cues that regulate plant growth and development throughout their life cycle. BBXs (B-box domain proteins) are a group of zinc finger proteins that not only directly govern the transcription of target genes but also associate with other factors to create a meticulous regulatory network to precisely regulate numerous aspects of growth and developmental processes in plants. Recent studies demonstrate that BBXs play pivotal roles in light-controlled plant growth and development. Besides, BBXs have been documented to regulate phytohormone-mediated physiological procedures. In this review, we summarize and highlight the multi-faced role of BBXs, with a focus in photomorphogenesis, photoperiodic flowering, shade avoidance, abiotic stress, and phytohormone-mediated growth and development in plant.
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Affiliation(s)
- Jing Cao
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Jiale Yuan
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Yingli Zhang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Chen Chen
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Beihong Zhang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Xianming Shi
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Rui Niu
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Fang Lin
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China.
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15
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Effect of Phytochrome Deficiency on Photosynthesis, Light-Related Genes Expression and Flavonoid Accumulation in Solanum lycopersicum under Red and Blue Light. Cells 2022; 11:cells11213437. [DOI: 10.3390/cells11213437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 10/27/2022] [Accepted: 10/28/2022] [Indexed: 11/06/2022] Open
Abstract
The effect of red (RL, 660 nm) and blue (BL, 450 nm) light on phy mutant tomato plants was studied. The rates of photosynthesis (Pn) and transpiration, the efficiency of the primary photochemical processes of photosynthesis, the contents of flavonoids and phenolic compounds, the low-molecular-weight antioxidant capacity (Trolox equivalent antioxidant capacity (TEAC)) of leaf extracts, and the expression of light-dependent genes were evaluated. Under RL, BL, and white fluorescent light (WFL), the Pn values decreased in the order: WT > phyb2 > phyaphyb2 > phyaphyb1phyb2, except for the Pn in phyb2 on BL. Phyb2 also had a larger number of stomata under BL and, as a result, it reached maximum transpiration. The noticeable accumulation of flavonoids and phenolic compounds was observed only in the phyb2 and phyaphyb2 mutants upon irradiation with BL, which agrees with the increased TEAC in the leaf extracts. We suggest that the increased antioxidant activity under PHYB2 deficiency and the maintenance of high photosynthesis under BL are based on an increase in the expression of the early signaling transcription factors genes BBX, HY5. The largest decrease in the content of flavonoids and TEAC was manifested with a deficiency in PHYB1, which is probably the key to maintaining the antioxidant status in BL plants.
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16
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Zhang X, Fang T, Huang Y, Sun W, Cai S. Transcriptional regulation of photomorphogenesis in seedlings of Brassica napus under different light qualities. PLANTA 2022; 256:77. [PMID: 36088613 DOI: 10.1007/s00425-022-03991-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 09/02/2022] [Indexed: 06/15/2023]
Abstract
This study displayed the transcriptional regulation network of key regulators and downstream pathway in seedling morphogenesis of Brassica napus under different light quality. Plants undergo photomorphogenesis upon the presence of light, mediated by different light (e.g., blue, red, and far-red) signaling pathways. Although the light signaling pathway has been well documented in Arabidopsis, the underlying mechanisms were studied to a less extent in other plant species including Brassica napus. In this study, we investigated the effect of different light qualities (white, blue, red, and far-red light) on the hypocotyl elongation in B. napus, and performed the transcriptomic analysis of seedlings in response to different light qualities. The results showed that hypocotyl elongation was slightly inhibited by red light, while it was strongly inhibited by blue/far-red light. Transcriptome analysis identified 9748 differentially expressed genes (DEGs) among treatments. Gene ontology (GO) enrichment analysis of DEGs showed that light-responsive and photosynthesis-related genes were highly expressed in response to blue/far-red light rather than in red light. Furthermore, the key genes in light signaling (i.e., PHYB, HY5, HYH, HFR1, and PIF3) exhibited distinct expression patterns between blue/far-red and red light treatments. In addition, subgenome dominant expression of homoeologous genes were observed for some genes, such as PHYA, PHYB, HFR1, and BBXs. The current study displayed a comprehensive dissection of light-mediated transcriptional regulation network, including light signaling, phytohormone, and cell elongation/modification, which improved the understanding on the underlying mechanism of light-regulated hypocotyl growth in B. napus.
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Affiliation(s)
- Xin Zhang
- Institute of Crop Science, Zhejiang University, Hangzhou, 310058, China
| | - Tianmeng Fang
- Institute of Crop Science, Zhejiang University, Hangzhou, 310058, China
| | - Yuqing Huang
- Institute of Crop Science, Hangzhou Academy of Agricultural Sciences, Hangzhou, 310024, China
| | - Wenyue Sun
- Institute of Crop Science, Zhejiang University, Hangzhou, 310058, China
| | - Shengguan Cai
- Institute of Crop Science, Zhejiang University, Hangzhou, 310058, China.
- Shandong (Linyi) Institute of Modern Agriculture, Zhejiang University, Linyi, 276000, China.
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17
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Li T, Li H, Lian H, Song P, Wang Y, Duan J, Song Z, Cao Y, Xu D, Li J, Zhang H. SICKLE represses photomorphogenic development of Arabidopsis seedlings via HY5- and PIF4-mediated signaling. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2022; 64:1706-1723. [PMID: 35848532 DOI: 10.1111/jipb.13329] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 07/18/2022] [Indexed: 06/15/2023]
Abstract
Arabidopsis CONSTITUTIVELY PHOTOMORPHOGENIC1 (COP1) and PHYTOCHROME INTERACTING FACTORs (PIFs) are negative regulators, and ELONGATED HYPOCOTYL5 (HY5) is a positive regulator of seedling photomorphogenic development. Here, we report that SICKLE (SIC), a proline rich protein, acts as a novel negative regulator of photomorphogenesis. HY5 directly binds the SIC promoter and activates SIC expression in response to light. In turn, SIC physically interacts with HY5 and interferes with its transcriptional regulation of downstream target genes. Moreover, SIC interacts with PIF4 and promotes PIF4-activated transcription of itself. Interestingly, SIC is targeted by COP1 for 26S proteasome-mediated degradation in the dark. Collectively, our data demonstrate that light-induced SIC functions as a brake to prevent exaggerated light response via mediating HY5 and PIF4 signaling, and its degradation by COP1 in the dark avoid too strong inhibition on photomorphogenesis at the beginning of light exposure.
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Affiliation(s)
- Tao Li
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002, China
| | - Haojie Li
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002, China
| | - Hongmei Lian
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002, China
| | - Pengyu Song
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Yulong Wang
- School of Life Sciences, Westlake University, Hangzhou, 310024, China
| | - Jie Duan
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Zhaoqing Song
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yan Cao
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Dongqing Xu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jigang Li
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Huiyong Zhang
- College of Life Sciences, Henan Agricultural University, Zhengzhou, 450002, China
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18
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Job N, Lingwan M, Masakapalli SK, Datta S. Transcription factors BBX11 and HY5 interdependently regulate the molecular and metabolic responses to UV-B. PLANT PHYSIOLOGY 2022; 189:2467-2480. [PMID: 35511140 PMCID: PMC9342961 DOI: 10.1093/plphys/kiac195] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 03/25/2022] [Indexed: 05/04/2023]
Abstract
UV-B radiation acts as a developmental cue and a stress factor for plants, depending on dose. Activation of the transcription factor ELONGATED HYPOCOTYL 5 (HY5) in a UV RESISTANCE LOCUS 8 (UVR8)-dependent manner leads to the induction of a broad set of genes under UV-B. However, the underlying molecular mechanisms regulating this process are less understood. Here, we use molecular, biochemical, genetic, and metabolomic tools to identify the B-BOX transcription factor B-BOX PROTEIN 11 (BBX11) as a component of the molecular response to UV-B in Arabidopsis (Arabidopsis thaliana). BBX11 expression is induced by UV-B in a dose-dependent manner. Under low UV-B, BBX11 regulates hypocotyl growth suppression, whereas it protects plants exposed to high UV-B radiation by promoting the accumulation of photo-protective phenolics and antioxidants, and inducing DNA repair genes. Our genetic studies indicate that BBX11 regulates hypocotyl elongation under UV-B partially dependent on HY5. Overexpression of BBX11 can partially rescue the high UV-B sensitivity of hy5, suggesting that HY5-mediated UV-B stress tolerance is partially dependent on BBX11. HY5 regulates the UV-B-mediated induction of BBX11 by directly binding to its promoter. BBX11 reciprocally regulates the mRNA and protein levels of HY5. We report here the role of a BBX11-HY5 feedback loop in regulating photomorphogenesis and stress tolerance under UV-B.
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Affiliation(s)
- Nikhil Job
- Department of Biological Sciences, Indian Institute of Science Education and Research-Bhopal, Bhopal 462066, Madhya Pradesh, India
| | - Maneesh Lingwan
- BioX School of Basic Sciences, Indian Institute of Technology-Mandi, Mandi 175005, Himachal Pradesh, India
| | - Shyam Kumar Masakapalli
- BioX School of Basic Sciences, Indian Institute of Technology-Mandi, Mandi 175005, Himachal Pradesh, India
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19
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Liu B, Zhao F, Zhou H, Xia Y, Wang X. Photoprotection conferring plant tolerance to freezing stress through rescuing photosystem in evergreen Rhododendron. PLANT, CELL & ENVIRONMENT 2022; 45:2093-2108. [PMID: 35357711 DOI: 10.1111/pce.14322] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 02/22/2022] [Accepted: 02/23/2022] [Indexed: 06/14/2023]
Abstract
Light stress is one of the important stresses for winter survival in evergreens, especially for plants with broad leaves, like evergreen rhododendrons. Photoprotection has been shown to upregulate dramatically in rhododendrons during winter, but whether it directly contributes to enhancing the freezing tolerance is still unknown. In this study, we found that the expression and circadian rhythm of an early light-induced protein (ELIP)-RhELIP3-which exerts photoprotection in Rhododendron 'Elsie Lee', could be impacted by both photoperiod and low temperature, with low temperature being the predominant inducer. Arabidopsis overexpressing RhELIP3 displayed significantly stronger freezing tolerance and better photosystem II function after a 3-day recovery from freezing treatment. Moreover, RhHY5 binds with the RhELIP3 promoter to activate its expression. Arabidopsis overexpressing RhHY5 exhibited stronger freezing tolerance and better photosystem II function. AtELIP1 and AtELIP2 were significantly induced in RhHY5-overexpressed Arabidopsis at low temperatures. We also discovered that RhBBX24 binds directly to RhELIP3 promoter and suppresses its expression. RhBBX24 can also interact with RhHY5 and inhibit the interaction of RhHY5-RhELIP3. RhELIP3, RhHY5, and RhBBX24 exhibited similar circadian rhythms under low temperature with short period. Overall, our investigation highlights that photoprotection is involved in improving the freezing tolerance of evergreen rhododendrons.
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Affiliation(s)
- Bing Liu
- Genomics and Genetic Engineering Laboratory of Ornamental Plants, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, P.R. China
| | - Fangmeng Zhao
- Genomics and Genetic Engineering Laboratory of Ornamental Plants, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, P.R. China
| | - Hong Zhou
- Genomics and Genetic Engineering Laboratory of Ornamental Plants, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, P.R. China
| | - Yiping Xia
- Genomics and Genetic Engineering Laboratory of Ornamental Plants, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, P.R. China
| | - Xiuyun Wang
- Genomics and Genetic Engineering Laboratory of Ornamental Plants, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, P.R. China
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20
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Zhou H, Zhu W, Wang X, Bian Y, Jiang Y, Li J, Wang L, Yin P, Deng XW, Xu D. A missense mutation in WRKY32 converts its function from a positive regulator to a repressor of photomorphogenesis. THE NEW PHYTOLOGIST 2022; 235:111-125. [PMID: 34935148 DOI: 10.1111/nph.17932] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 12/08/2021] [Indexed: 06/14/2023]
Abstract
CONSTITUTIVELY PHOTOMORPHOGENIC 1 (COP1) mediates various cellular and physiological processes in plants by targeting a large number of substrates for ubiquitination and degradation. In this study, we reveal that a substitution of Pro for Leu at amino acid position 409 in WRKY32 largely suppresses the short hypocotyls and expanded cotyledon phenotypes of cop1-6. WRKY32P409L promotes hypocotyl growth and inhibits the opening of cotyledons in Arabidopsis. Loss of WRKY32 function mutant seedlings display elongated hypocotyls, whereas overexpression of WRKY32 leads to shortened hypocotyls. WRKY32 directly associates with the promoter regions of HY5 to activate its transcription. COP1 interacts with and targets WRKY32 for ubiquitination and degradation in darkness. WRKY32P409L exhibits enhanced DNA binding ability and affects the expression of more genes compared with WRKY32 in Arabidopsis. Our results not only reveal the basic role for WRKY32 in promoting photomorphogenesis, but also provide insights into manipulating plant growth by engineering key components of light signaling.
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Affiliation(s)
- Hua Zhou
- Key Laboratory of Molecular Design for Plant Cell Factory of Guangdong Higher Education Institutes, Institute of Plant and Food Sciences, Department of Biology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Wei Zhu
- Key Laboratory of Molecular Design for Plant Cell Factory of Guangdong Higher Education Institutes, Institute of Plant and Food Sciences, Department of Biology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Xuncheng Wang
- Beijing Key Laboratory of Environment Friendly Management on Fruit Diseases and Pests in North China, Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Yeting Bian
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yan Jiang
- Key Laboratory of Molecular Design for Plant Cell Factory of Guangdong Higher Education Institutes, Institute of Plant and Food Sciences, Department of Biology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Jian Li
- Key Laboratory of Molecular Design for Plant Cell Factory of Guangdong Higher Education Institutes, Institute of Plant and Food Sciences, Department of Biology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Lixia Wang
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, 430070, China
| | - Ping Yin
- National Key Laboratory of Crop Genetic Improvement, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xing Wang Deng
- Key Laboratory of Molecular Design for Plant Cell Factory of Guangdong Higher Education Institutes, Institute of Plant and Food Sciences, Department of Biology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, 518055, China
- State Key Laboratory of Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences, School of Advanced Agriculture Sciences and School of Life Sciences, Peking University, Beijing, 100871, China
| | - Dongqing Xu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
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Genome-Wide Identification of the B-Box Gene Family and Expression Analysis Suggests Their Potential Role in Photoperiod-Mediated β-Carotene Accumulation in the Endocarp of Cucumber (Cucumis sativus L.) Fruit. Genes (Basel) 2022; 13:genes13040658. [PMID: 35456464 PMCID: PMC9031713 DOI: 10.3390/genes13040658] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/03/2022] [Accepted: 04/05/2022] [Indexed: 12/27/2022] Open
Abstract
Carotenoids are indispensable to plants and essential for human nutrition and health. Carotenoid contents are strongly influenced by light through light-responsive genes such as B-Box (BBX) genes. BBX proteins, a class of zinc-finger transcription factors, mediate many light-signaling pathways, leading to the biosynthesis of important metabolites in plants. However, the identification of the BBX gene family and expression analysis in response to photoperiod-mediated carotenoid accumulation in cucumber remains unexplored. We performed a genome-wide study and determined the expression of cucumber BBX genes (hereafter referred to as CsaBBXs genes) in the endocarp of Xishuangbanna cucumber fruit (a special type of cucumber accumulating a high level of β-carotene in the endocarp) using an RNA-seq analysis of plants previously subjected to two photoperiodic conditions. Here, 26 BBX family genes were identified in the cucumber genome and named serially CsaBBX1 through CsaBBX26. We characterized CsaBBX genes in terms of their phylogenetic relationships, exon-intron structures, cis-acting elements, and syntenic relationships with Arabidopsis thaliana (L.) Heynh. RNA-seq analysis revealed a varied expression of CsaBBX genes under photoperiod treatment. The analysis of CsaBBXs genes revealed a strong positive correlation between CsaBBX17 and carotenoid biosynthetic pathway genes (phytoene synthase, ζ-carotene desaturase, lycopene ε-cyclase, β-carotene hydroxylase-1), thus suggesting its involvement in β-carotene biosynthesis. Additionally, nine CsaBBX genes (CsaBBX 4, 5, 7, 9, 11, 13, 15, 17 and 22) showed a significant positive correlation with β-carotene content. The selected CsaBBX genes were verified by qRT-PCR and confirmed the validity of RNA-seq data. The results of this study established the genome-wide analysis of the cucumber BBX family and provide a framework for understanding their biological role in carotenoid accumulation and photoperiodic responses. Further investigations of CsaBBX genes are vital since they are promising candidate genes for the functional analysis of carotenoid biosynthesis and can provide genetic tools for the molecular breeding of carotenoids in plants.
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Liu Y, Zhang XW, Liu X, Zheng PF, Su L, Wang GL, Wang XF, Li YY, You CX, An JP. Phytochrome interacting factor MdPIF7 modulates anthocyanin biosynthesis and hypocotyl growth in apple. PLANT PHYSIOLOGY 2022; 188:2342-2363. [PMID: 34983053 PMCID: PMC8968312 DOI: 10.1093/plphys/kiab605] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 11/26/2021] [Indexed: 06/10/2023]
Abstract
Light affects many physiological and developmental processes of plants by regulating the expression and activity of light-responsive proteins. Among them, phytochrome interacting factors (PIFs) play pivotal roles in the regulation of anthocyanin accumulation and hypocotyl growth. However, the molecular mechanism is not well understood, especially in woody plants, such as apple (Malus × domestica). In this study, we identified a light-responsive PIF protein, MdPIF7, in apple and investigated the molecular mechanism of its regulation of anthocyanin biosynthesis and hypocotyl growth. We found that overexpression of MdPIF7 decreased anthocyanin accumulation in transgenic apple materials and promoted hypocotyl elongation in ectopically expressed Arabidopsis (Arabidopsis thaliana). Further investigation showed that MdPIF7 functioned by interacting with B-box 23 (MdBBX23), a positive regulator of anthocyanin biosynthesis in apple and hypocotyl growth inhibition in ectopically expressed Arabidopsis, and attenuating the transcriptional activation of MdBBX23 on LONG HYPOCOTYL 5 (MdHY5). In addition, MdPIF7 interacted with basic region leucine zipper 44 (MdbZIP44) and ethylene response factor 38 (MdERF38), two positive regulators of anthocyanin biosynthesis, and it negatively regulated MdbZIP44- and MdERF38-promoted anthocyanin accumulation by interfering with the interaction between MdbZIP44/MdERF38 and MdMYB1. Taken together, our results reveal that MdPIF7 regulates anthocyanin biosynthesis in apple and hypocotyl growth in ectopically expressed Arabidopsis through MdPIF7-MdBBX23-MdHY5 and MdPIF7-MdbZIP44/MdERF38-MdMYB1 modules. Our findings enrich the functional studies of PIF proteins and provide insights into the molecular mechanism of PIF-mediated anthocyanin biosynthesis and hypocotyl growth.
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Affiliation(s)
| | | | - Xin Liu
- Beijing Academy of Forestry and Pomology Sciences, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100093, China
| | - Peng-Fei Zheng
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an 271018, Shandong, China
| | - Ling Su
- Shandong Academy of Grape, Shandong Academy of Agricultural Sciences, Jinan 250100, Shandong, China
| | - Gui-Luan Wang
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an 271018, Shandong, China
| | - Xiao-Fei Wang
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an 271018, Shandong, China
| | - Yuan-Yuan Li
- State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an 271018, Shandong, China
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23
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Xiao Y, Chu L, Zhang Y, Bian Y, Xiao J, Xu D. HY5: A Pivotal Regulator of Light-Dependent Development in Higher Plants. FRONTIERS IN PLANT SCIENCE 2022; 12:800989. [PMID: 35111179 PMCID: PMC8801436 DOI: 10.3389/fpls.2021.800989] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Accepted: 12/17/2021] [Indexed: 05/10/2023]
Abstract
ELONGATED HYPOCOTYL5 (HY5), a bZIP-type transcription factor, acts as a master regulator that regulates various physiological and biological processes in plants such as photomorphogenesis, root growth, flavonoid biosynthesis and accumulation, nutrient acquisition, and response to abiotic stresses. HY5 is evolutionally conserved in function among various plant species. HY5 acts as a master regulator of light-mediated transcriptional regulatory hub that directly or indirectly controls the transcription of approximately one-third of genes at the whole genome level. The transcription, protein abundance, and activity of HY5 are tightly modulated by a variety of factors through distinct regulatory mechanisms. This review primarily summarizes recent advances on HY5-mediated molecular and physiological processes and regulatory mechanisms on HY5 in the model plant Arabidopsis as well as in crops.
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Affiliation(s)
| | | | | | | | | | - Dongqing Xu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, China
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Ma J, Dai JX, Liu XW, Lin D. Genome-wide and expression analysis of B-box gene family in pepper. BMC Genomics 2021; 22:883. [PMID: 34872495 PMCID: PMC8650552 DOI: 10.1186/s12864-021-08186-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 11/17/2021] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND BBX transcription factors are a kind of zinc finger transcription factors with one or two B-box domains, which partilant in plant growth, development and response to abiotic or biotic stress. The BBX family has been identified in Arabidopsis, rice, tomato and some other model plant genomes. RESULTS Here, 24 CaBBX genes were identified in pepper (Capsicum annuum L.), and the phylogenic analysis, structures, chromosomal location, gene expression patterns and subcellular localizations were also carried out to understand the evolution and function of CaBBX genes. All these CaBBXs were divided into five classes, and 20 of them distributed in 11 of 12 pepper chromosomes unevenly. Most duplication events occurred in subgroup I. Quantitative RT-PCR indicated that several CaBBX genes were induced by abiotic stress and hormones, some had tissue-specific expression profiles or differentially expressed at developmental stages. Most of CaBBX members were predicated to be nucleus-localized in consistent with the transient expression assay by onion inner epidermis of the three tested CaBBX members (CaBBX5, 6 and 20). CONCLUSION Several CaBBX genes were induced by abiotic stress and exogenous phytohormones, some expressed tissue-specific and variously at different developmental stage. The detected CaBBXs act as nucleus-localized transcription factors. Our data might be a foundation in the identification of CaBBX genes, and a further understanding of their biological function in future studies.
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Affiliation(s)
- Jing Ma
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Key laboratory of horticultural plant genetic improvement and breeding of Qingdao, College of Horticulture, Qingdao Agricultural University, 700 Changcheng Road, Qingdao, 266109, China
| | - Jia-Xi Dai
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Key laboratory of horticultural plant genetic improvement and breeding of Qingdao, College of Horticulture, Qingdao Agricultural University, 700 Changcheng Road, Qingdao, 266109, China
| | - Xiao-Wei Liu
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Key laboratory of horticultural plant genetic improvement and breeding of Qingdao, College of Horticulture, Qingdao Agricultural University, 700 Changcheng Road, Qingdao, 266109, China
| | - Duo Lin
- Engineering Laboratory of Genetic Improvement of Horticultural Crops of Shandong Province, Key laboratory of horticultural plant genetic improvement and breeding of Qingdao, College of Horticulture, Qingdao Agricultural University, 700 Changcheng Road, Qingdao, 266109, China.
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25
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Singh S, Chhapekar SS, Ma Y, Rameneni JJ, Oh SH, Kim J, Lim YP, Choi SR. Genome-Wide Identification, Evolution, and Comparative Analysis of B-Box Genes in Brassica rapa, B. oleracea, and B. napus and Their Expression Profiling in B. rapa in Response to Multiple Hormones and Abiotic Stresses. Int J Mol Sci 2021; 22:ijms221910367. [PMID: 34638707 PMCID: PMC8509055 DOI: 10.3390/ijms221910367] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 09/19/2021] [Accepted: 09/22/2021] [Indexed: 11/23/2022] Open
Abstract
The B-box zinc-finger transcription factors are important for plant growth, development, and various physiological processes such as photomorphogenesis, light signaling, and flowering, as well as for several biotic and abiotic stress responses. However, there is relatively little information available regarding Brassica B-box genes and their expression. In this study, we identified 51, 52, and 101 non-redundant genes encoding B-box proteins in Brassica rapa (BrBBX genes), B. oleracea (BoBBX genes), and B. napus (BnBBX genes), respectively. A whole-genome identification, characterization, and evolutionary analysis (synteny and orthology) of the B-box gene families in the diploid species B. rapa (A genome) and B. oleracea (C genome) and in the allotetraploid species B. napus (AC genome) revealed segmental duplications were the major contributors to the expansion of the BrassicaBBX gene families. The BrassicaBBX genes were classified into five subgroups according to phylogenetic relationships, gene structures, and conserved domains. Light-responsive cis-regulatory elements were detected in many of the BBX gene promoters. Additionally, BrBBX expression profiles in different tissues and in response to various abiotic stresses (heat, cold, salt, and drought) or hormones (abscisic acid, methyl jasmonate, and gibberellic acid) were analyzed by qRT-PCR. The data indicated that many B-box genes (e.g., BrBBX13, BrBBX15, and BrBBX17) may contribute to plant development and growth as well as abiotic stress tolerance. Overall, the identified BBX genes may be useful as functional genetic markers for multiple stress responses and plant developmental processes.
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Affiliation(s)
- Sonam Singh
- Department of Horticulture, College of Agriculture and Life Science, Chungnam National University, Daejeon 34134, Korea; (S.S.); (S.S.C.); (Y.M.); (J.J.R.); (S.H.O.)
| | - Sushil Satish Chhapekar
- Department of Horticulture, College of Agriculture and Life Science, Chungnam National University, Daejeon 34134, Korea; (S.S.); (S.S.C.); (Y.M.); (J.J.R.); (S.H.O.)
| | - Yinbo Ma
- Department of Horticulture, College of Agriculture and Life Science, Chungnam National University, Daejeon 34134, Korea; (S.S.); (S.S.C.); (Y.M.); (J.J.R.); (S.H.O.)
| | - Jana Jeevan Rameneni
- Department of Horticulture, College of Agriculture and Life Science, Chungnam National University, Daejeon 34134, Korea; (S.S.); (S.S.C.); (Y.M.); (J.J.R.); (S.H.O.)
| | - Sang Heon Oh
- Department of Horticulture, College of Agriculture and Life Science, Chungnam National University, Daejeon 34134, Korea; (S.S.); (S.S.C.); (Y.M.); (J.J.R.); (S.H.O.)
| | - Jusang Kim
- Breeding Research Institute, Dayi International Seed Co., Ltd., 16-35 Ssiat-gil, Baeksan-myeon, Gimje 54324, Jeollabuk-do, Korea;
| | - Yong Pyo Lim
- Department of Horticulture, College of Agriculture and Life Science, Chungnam National University, Daejeon 34134, Korea; (S.S.); (S.S.C.); (Y.M.); (J.J.R.); (S.H.O.)
- Correspondence: (Y.P.L.); (S.R.C.); Tel.: +82-42-821-8846 (Y.P.L. & S.R.C.); Fax: +82-42-821-8847 (Y.P.L. & S.R.C.)
| | - Su Ryun Choi
- Department of Horticulture, College of Agriculture and Life Science, Chungnam National University, Daejeon 34134, Korea; (S.S.); (S.S.C.); (Y.M.); (J.J.R.); (S.H.O.)
- Correspondence: (Y.P.L.); (S.R.C.); Tel.: +82-42-821-8846 (Y.P.L. & S.R.C.); Fax: +82-42-821-8847 (Y.P.L. & S.R.C.)
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26
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Xu Y, Zhu Z. PIF4 and PIF4-Interacting Proteins: At the Nexus of Plant Light, Temperature and Hormone Signal Integrations. Int J Mol Sci 2021; 22:10304. [PMID: 34638641 PMCID: PMC8509071 DOI: 10.3390/ijms221910304] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/19/2021] [Accepted: 09/21/2021] [Indexed: 11/16/2022] Open
Abstract
Basic helix-loop-helix (bHLH) family transcription factor PHYTOCHROME INTERACTING FACTOR 4 (PIF4) is necessary for plant adaption to light or high ambient temperature. PIF4 directly associates with plenty of its target genes and modulates the global transcriptome to induce or reduce gene expression levels. However, PIF4 activity is tightly controlled by its interacting proteins. Until now, twenty-five individual proteins have been reported to physically interact with PIF4. These PIF4-interacting proteins act together with PIF4 and form a unique nexus for plant adaption to light or temperature change. In this review, we will discuss the different categories of PIF4-interacting proteins, including photoreceptors, circadian clock regulators, hormone signaling components, and transcription factors. These distinct PIF4-interacting proteins either integrate light and/or temperature cues with endogenous hormone signaling, or control PIF4 abundances and transcriptional activities. Taken together, PIF4 and PIF4-interacting proteins play major roles for exogenous and endogenous signal integrations, and therefore establish a robust network for plants to cope with their surrounding environmental alterations.
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Affiliation(s)
- Yang Xu
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China;
| | - Ziqiang Zhu
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China;
- Key Laboratory of Molecular Design for Plant Cell Factory of Guangdong Higher Education Institutes, Department of Biology, Institute of Plant and Food Science, Southern University of Science and Technology, Shenzhen 518055, China
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Bhagat PK, Verma D, Sharma D, Sinha AK. HY5 and ABI5 transcription factors physically interact to fine tune light and ABA signaling in Arabidopsis. PLANT MOLECULAR BIOLOGY 2021; 107:117-127. [PMID: 34490593 DOI: 10.1007/s11103-021-01187-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 08/27/2021] [Indexed: 05/25/2023]
Abstract
Cross-talk between light and ABA signaling is mediated by physical interaction between HY5 and ABI5 Arabidopsis. Plants undergo numerous transitions during their life-cycle and have developed a very complex network of signaling to integrate information from their surroundings to effectively survive in the ever-changing environment. Light signaling is one of the crucial factors that govern the plant growth and development from the very first step of that is from seedling germination to the flowering. Similarly, Abscisic acid (ABA) signaling transduces the signals from external unfavorable condition to the internal developmental pathways and is crucial for regulation of seed maturation, dormancy germination and early seedling development. These two fundamental factors coordinately regulate plant wellbeing, but the underlying molecular mechanisms that drive this regulation are poorly understood. Here, we identified that two bZIP transcription factors, ELONGATED HYPOCOTYLE 5 (HY5), a positive regulator of light signaling and ABA-INSENSITIVE 5 (ABI5), a positive regulator of ABA signaling interacts and integrates the two pathways together. Our phenotypic data suggest that ABI5 may act as a negative regulator during photomorphogenesis in contrast, HY5 acts as a positive regulator of ABA signaling in an ABA dependent manner. We further showed that over-expression of HY5 leads to ABA-hypersensitive phenotype and late flowering phenotype. Taken together, our data provides key insights regarding the mechanism of interaction between ABI5-HY5 that fine tunes the stress and developmental response in Arabidopsis.
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Affiliation(s)
| | - Deepanjali Verma
- National Institute of Plant Genome Research, New Delhi, 110067, India
| | - Deepika Sharma
- National Institute of Plant Genome Research, New Delhi, 110067, India
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BBX11 promotes red light-mediated photomorphogenic development by modulating phyB-PIF4 signaling. ABIOTECH 2021; 2:117-130. [PMID: 36304757 PMCID: PMC9590482 DOI: 10.1007/s42994-021-00037-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 02/24/2021] [Indexed: 12/03/2022]
Abstract
phytochrome B (phyB) acts as the red light photoreceptor and negatively regulates the growth-promoting factor PHYTOCHROME INTERACTING 4 (PIF4) through a direct physical interaction, which in turn changes the expression of a large number of genes. phyB-PIF4 module regulates a variety of biological and developmental processes in plants. In this study, we demonstrate that B-BOX PROTEIN 11 (BBX11) physically interacts with both phyB and PIF4. BBX11 negatively regulates PIF4 accumulation as well as its biochemical activity, consequently leading to the repression of PIF4-controlled genes' expression and promotion of photomorphogenesis in the prolonged red light. This study reveals a regulatory mechanism that mediates red light signal transduction and sheds a light on phyB-PIF4 module in promoting red light-dependent photomorphognenesis. Supplementary Information The online version contains supplementary material available at 10.1007/s42994-021-00037-2.
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Job N, Datta S. PIF3/HY5 module regulates BBX11 to suppress protochlorophyllide levels in dark and promote photomorphogenesis in light. THE NEW PHYTOLOGIST 2021; 230:190-204. [PMID: 33330975 DOI: 10.1111/nph.17149] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 12/09/2020] [Indexed: 05/04/2023]
Abstract
Greening of cotyledons during de-etiolation is critical for harvesting light energy and sustaining plant growth. PIF3 and HY5 antagonistically regulate protochlorophyllide synthesis in the dark. However, the mechanism by which the PIF3/HY5 module regulates genes involved in protochlorophyllide synthesis is not clear. Using genetic, molecular and biochemical techniques we identified that the B-BOX protein BBX11 acts directly downstream of PIF3 and HY5 to transcriptionally modulate genes involved in protochlorophyllide synthesis. Dark-grown bbx11 and 35S:BBX11 seedlings exhibit an enhanced and reduced ability to green, respectively, when exposed to light. Transcript levels of HEMA1 and CHLH are upregulated in 35S:BBX11 seedlings that accumulate high levels of protochlorophyllide in the dark and undergo photobleaching upon illumination. PIF3 inhibits BBX11 in the dark by directly binding to its promoter. bbx11 suppresses the cotyledon greening defect of pif3 after prolonged dark, indicating that the PIF3-mediated regulation of greening is dependent on BBX11. The enhanced greening of hy5 is also suppressed in hy5 lines overexpressing BBX11. In light, HY5 directly binds to the promoter of BBX11 and activates its expression to regulate BBX11-mediated hypocotyl inhibition. We show that a PIF3/HY5 module regulates BBX11 expression in opposite ways to optimise protochlorophyllide accumulation in the dark and promote photomorphogenesis in light.
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Affiliation(s)
- Nikhil Job
- Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, Madhya Pradesh, 462066, India
| | - Sourav Datta
- Department of Biological Sciences, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri, Bhopal, Madhya Pradesh, 462066, India
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30
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Wang Y, Zhai Z, Sun Y, Feng C, Peng X, Zhang X, Xiao Y, Zhou X, Wang W, Jiao J, Li T. Genome-Wide Identification of the B- BOX Genes that Respond to Multiple Ripening Related Signals in Sweet Cherry Fruit. Int J Mol Sci 2021; 22:ijms22041622. [PMID: 33562756 PMCID: PMC7914455 DOI: 10.3390/ijms22041622] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 01/24/2021] [Accepted: 02/03/2021] [Indexed: 11/16/2022] Open
Abstract
B-BOX proteins are zinc finger transcription factors that play important roles in plant growth, development, and abiotic stress responses. In this study, we identified 15 PavBBX genes in the genome database of sweet cherry. We systematically analyzed the gene structures, clustering characteristics, and expression patterns of these genes during fruit development and in response to light and various hormones. The PavBBX genes were divided into five subgroups. The promoter regions of the PavBBX genes contain cis-acting elements related to plant development, hormones, and stress. qRT-PCR revealed five upregulated and eight downregulated PavBBX genes during fruit development. In addition, PavBBX6, PavBBX9, and PavBBX11 were upregulated in response to light induction. We also found that ABA, BR, and GA3 contents significantly increased in response to light induction. Furthermore, the expression of several PavBBX genes was highly correlated with the expression of anthocyanin biosynthesis genes, light-responsive genes, and genes that function in multiple hormone signaling pathways. Some PavBBX genes were strongly induced by ABA, GA, and BR treatment. Notably, PavBBX6 and PavBBX9 responded to all three hormones. Taken together, BBX proteins likely play major roles in regulating anthocyanin biosynthesis in sweet cherry fruit by integrating light, ABA, GA, and BR signaling pathways.
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Ponnu J, Hoecker U. Illuminating the COP1/SPA Ubiquitin Ligase: Fresh Insights Into Its Structure and Functions During Plant Photomorphogenesis. FRONTIERS IN PLANT SCIENCE 2021; 12:662793. [PMID: 33841486 PMCID: PMC8024647 DOI: 10.3389/fpls.2021.662793] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 03/04/2021] [Indexed: 05/07/2023]
Abstract
CONSTITUTIVE PHOTOMORPHOGENIC 1 functions as an E3 ubiquitin ligase in plants and animals. Discovered originally in Arabidopsis thaliana, COP1 acts in a complex with SPA proteins as a central repressor of light-mediated responses in plants. By ubiquitinating and promoting the degradation of several substrates, COP1/SPA regulates many aspects of plant growth, development and metabolism. In contrast to plants, human COP1 acts as a crucial regulator of tumorigenesis. In this review, we discuss the recent important findings in COP1/SPA research including a brief comparison between COP1 activity in plants and humans.
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Bu X, Wang X, Yan J, Zhang Y, Zhou S, Sun X, Yang Y, Ahammed GJ, Liu Y, Qi M, Wang F, Li T. Genome-Wide Characterization of B-Box Gene Family and Its Roles in Responses to Light Quality and Cold Stress in Tomato. FRONTIERS IN PLANT SCIENCE 2021; 12:698525. [PMID: 34290726 PMCID: PMC8287887 DOI: 10.3389/fpls.2021.698525] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 05/28/2021] [Indexed: 05/17/2023]
Abstract
Perceiving incoming environmental information is critical for optimizing plant growth and development. Multiple B-box proteins (BBXs) play essential roles in light-dependent developmental processes in plants. However, whether BBXs function as a signal integrator between light and temperature in tomato plants remains elusive. In this study, 31 SlBBX genes were identified from the newly released tomato (Solanum lycopersicum) genome sequences and were clustered into five subgroups. Gene structure and protein motif analyses showed relatively high conservation of closely clustered SlBBX genes within each subgroup; however, genome mapping analysis indicated the uneven distribution of the SlBBX genes on tomato chromosomes. Promoter cis-regulatory elements prediction and gene expression indicated that SlBBX genes were highly responsive to light, hormones, and stress conditions. Reverse genetic approaches revealed that disruption of SlBBX7, SlBBX9, and SlBBX20 largely suppressed the cold tolerance of tomato plants. Furthermore, the impairment of SlBBX7, SlBBX9, and SlBBX20 suppressed the photosynthetic response immediately after cold stress. Due to the impairment of non-photochemical quenching (NPQ), the excess photon energy and electron flow excited by low temperature were not consumed in SlBBX7-, SlBBX9-, and SlBBX20- silenced plants, leading to the over reduction of electron carriers and damage of the photosystem. Our study emphasized the positive roles of light signaling transcription factors SlBBXs in cold tolerance in tomato plants, which may improve the current understanding of how plants integrate light and temperature signals to adapt to adverse environments.
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Affiliation(s)
- Xin Bu
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
- Key Laboratory of Protected Horticulture, Ministry of Education, Shenyang, China
- National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang, China
| | - Xiujie Wang
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Jiarong Yan
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Ying Zhang
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Shunyuan Zhou
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
| | - Xin Sun
- College of Land and Environment, Shenyang Agricultural University, Shenyang, China
| | - Youxin Yang
- College of Agronomy, Jiangxi Agricultural University, Nanchang, China
| | - Golam Jalal Ahammed
- College of Forestry, Henan University of Science and Technology, Luoyang, China
| | - Yufeng Liu
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
- Key Laboratory of Protected Horticulture, Ministry of Education, Shenyang, China
- National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang, China
| | - Mingfang Qi
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
- Key Laboratory of Protected Horticulture, Ministry of Education, Shenyang, China
- National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang, China
| | - Feng Wang
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
- Key Laboratory of Protected Horticulture, Ministry of Education, Shenyang, China
- National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang, China
- *Correspondence: Feng Wang orcid.org/0000-0001-5351-1531
| | - Tianlai Li
- College of Horticulture, Shenyang Agricultural University, Shenyang, China
- Key Laboratory of Protected Horticulture, Ministry of Education, Shenyang, China
- National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang, China
- Tianlai Li
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Zhu W, Zhou H, Lin F, Zhao X, Jiang Y, Xu D, Deng XW. COLD-REGULATED GENE27 Integrates Signals from Light and the Circadian Clock to Promote Hypocotyl Growth in Arabidopsis. THE PLANT CELL 2020; 32:3155-3169. [PMID: 32732313 PMCID: PMC7534470 DOI: 10.1105/tpc.20.00192] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 07/13/2020] [Accepted: 07/28/2020] [Indexed: 05/20/2023]
Abstract
Light and the circadian clock are two essential external and internal cues affecting seedling development. COLD-REGULATED GENE27 (COR27), which is regulated by cold temperatures and light signals, functions as a key regulator of the circadian clock. Here, we report that COR27 acts as a negative regulator of light signaling. COR27 physically interacts with the CONSTITUTIVELY PHOTOMORPHOGENIC1 (COP1)-SUPPRESSOR OF PHYTOCHROME A1 (SPA1) E3 ubiquitin ligase complex and undergoes COP1-mediated degradation via the 26S proteasome system in the dark. cor27 mutant seedlings exhibit shorter hypocotyls, while transgenic lines overexpressing COR27 show elongated hypocotyls in the light. In addition, light induces the accumulation of COR27. On one hand, accumulated COR27 interacts with ELONGATED HYPOCOTYL5 (HY5) to repress HY5 DNA binding activity. On the other hand, COR27 associates with the chromatin at the PHYTOCHROME INTERACTING FACTOR4 (PIF4) promoter region and upregulates PIF4 expression in a circadian clock-dependent manner. Together, our findings reveal a mechanistic framework whereby COR27 represses photomorphogenesis in the light and provide insights toward how light and the circadian clock synergistically control hypocotyl growth.
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Affiliation(s)
- Wei Zhu
- Institute of Plant and Food Sciences, Department of Biology, Southern University of Science and Technology, Shenzhen 518055, China
| | - Hua Zhou
- Institute of Plant and Food Sciences, Department of Biology, Southern University of Science and Technology, Shenzhen 518055, China
| | - Fang Lin
- Institute of Plant and Food Sciences, Department of Biology, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xianhai Zhao
- Institute of Plant and Food Sciences, Department of Biology, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yan Jiang
- Institute of Plant and Food Sciences, Department of Biology, Southern University of Science and Technology, Shenzhen 518055, China
| | - Dongqing Xu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - Xing Wang Deng
- Institute of Plant and Food Sciences, Department of Biology, Southern University of Science and Technology, Shenzhen 518055, China
- State Key Laboratory of Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences, School of Advanced Agriculture Sciences and School of Life Sciences, Peking University, Beijing 100871, China
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Song Z, Yan T, Liu J, Bian Y, Heng Y, Lin F, Jiang Y, Wang Deng X, Xu D. BBX28/BBX29, HY5 and BBX30/31 form a feedback loop to fine-tune photomorphogenic development. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 104:377-390. [PMID: 32654323 DOI: 10.1111/tpj.14929] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 06/28/2020] [Accepted: 07/06/2020] [Indexed: 05/23/2023]
Abstract
Light is one of the key environmental cues controlling photomorphogenic development in plants. A group of B-box (BBX) proteins play critical roles in this developmental process through diverse regulatory mechanisms. In this study we report that BBX29 acts as a negative regulator of light signaling. BBX29 interacts with CONSTITUTIVELY PHOTOMORPHOGENIC 1 (COP1) and undergoes COP1-mediated degradation in the dark. Mutant seedlings with loss of BBX29 function show shortened hypocotyls, while transgenic plants overexpressing BBX29 display elongated hypocotyls in the light. Both BBX28 and BBX29 interfere with the binding of ELONGATED HYPOCOTYL 5 (HY5) to the promoters of BBX30 and BBX31, consequently leading to the upregulation of their transcript levels. BBX30 and BBX31 associate with the promoter regions of BBX28 and BBX29, which in turn promotes the expression of these genes. Taken together, this study reveals a transcriptional feedback loop consisting of BBX28, BBX29, BBX30, BBX31, and HY5 that serves to fine-tune photomorphogenesis in response to light in plants.
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Affiliation(s)
- Zhaoqing Song
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Tingting Yan
- Department of Biology, Institute of Plant and Food Sciences, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Jiujie Liu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yeting Bian
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yueqin Heng
- Department of Biology, Institute of Plant and Food Sciences, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Fang Lin
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Yan Jiang
- Department of Biology, Institute of Plant and Food Sciences, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Xing Wang Deng
- Department of Biology, Institute of Plant and Food Sciences, Southern University of Science and Technology, Shenzhen, 518055, China
- State Key Laboratory of Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences, School of Advanced Agriculture Sciences and School of Life Sciences, Peking University, Beijing, 100871, China
| | - Dongqing Xu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
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