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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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Zhang Q, Cai X, Wu B, Tong B, Xu D, Wang J, Cui B, Yin R, Lin L. S-nitrosylation may inhibit the activity of COP1 in plant photomorphogenesis. Biochem Biophys Res Commun 2024; 719:150096. [PMID: 38749091 DOI: 10.1016/j.bbrc.2024.150096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Accepted: 05/08/2024] [Indexed: 06/05/2024]
Abstract
Protein S-nitrosylation, which is defined by the covalent attachment of nitric oxide (NO) to the thiol group of cysteine residues, is known to play critical roles in plant development and stress responses. NO promotes seedling photomorphogenesis and NO emission is enhanced by light. However, the function of protein S-nitrosylation in plant photomorphogenesis is largely unknown. E3 ligase CONSTITUTIVELY PHOTOMORPHOGENIC 1 (COP1) and transcription factor ELONGATED HYPOCOTYL 5 (HY5) antagonistically regulate seedling photomorphogenesis. COP1 inhibits plant photomorphogenesis by targeting photomorphogenic promoters like HY5 for 26S proteasome degradation. Here, we report that COP1 is S-nitrosylated in vitro. Mass spectrometry analyses revealed that two evolutionarily well conserved residues, cysteine 425 and cysteine 607, in the WD40 domain of COP1 are S-nitrosylated. S-nitrosylated glutathione (GSNO) is an important physiological NO donor for protein S-nitrosylation. The Arabidopsis (Arabidopsis thaliana) gsnor1-3 mutant, which accumulates higher level of GSNO, accumulated higher HY5 levels than wildtype (WT), indicating that COP1 activity is inhibited. Protein S-nitrosylation can be reversed by Thioredoxin-h5 (TRXh5) in plants. Indeed, COP1 interacts directly with TRXh5 and its close homolog TRXh3. Moreover, catalase 3 (CAT3) acts as a transnitrosylase that transfers NO to its target proteins like GSNO reductase (GSNOR). We found that CAT3 interacts with COP1 in plants. Taken together, our data indicate that the activity of COP1 is likely inhibited by NO via S-nitrosylation to promote the accumulation of HY5 and photomorphogenesis.
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Affiliation(s)
- Qianwen Zhang
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan RD, Minhang District, Shanghai, 200240, China.
| | - Xiaofeng Cai
- Development and Collaborative Innovation Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China.
| | - Baoguo Wu
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan RD, Minhang District, Shanghai, 200240, China.
| | - Boqin Tong
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan RD, Minhang District, Shanghai, 200240, China.
| | - Dawei Xu
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan RD, Minhang District, Shanghai, 200240, China.
| | - Jie Wang
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan RD, Minhang District, Shanghai, 200240, China.
| | - Beimi Cui
- Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, Edinburgh, EH9 3BF, United Kingdom.
| | - Ruohe Yin
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan RD, Minhang District, Shanghai, 200240, China; Key Laboratory of Urban Agriculture, Ministry of Agriculture, Shanghai Jiao Tong University, 200240, Shanghai, China.
| | - Li Lin
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan RD, Minhang District, Shanghai, 200240, China.
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He W, Liu H, Wu Z, Miao Q, Hu X, Yan X, Wen H, Zhang Y, Fu X, Ren L, Tang K, Li L. The AaBBX21-AaHY5 module mediates light-regulated artemisinin biosynthesis in Artemisia annua L. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2024. [PMID: 38980203 DOI: 10.1111/jipb.13708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 05/03/2024] [Indexed: 07/10/2024]
Abstract
The sesquiterpene lactone artemisinin is an important anti-malarial component produced by the glandular secretory trichomes of sweet wormwood (Artemisia annua L.). Light was previously shown to promote artemisinin production, but the underlying regulatory mechanism remains elusive. In this study, we demonstrate that ELONGATED HYPOCOTYL 5 (HY5), a central transcription factor in the light signaling pathway, cannot promote artemisinin biosynthesis on its own, as the binding of AaHY5 to the promoters of artemisinin biosynthetic genes failed to activate their transcription. Transcriptome analysis and yeast two-hybrid screening revealed the B-box transcription factor AaBBX21 as a potential interactor with AaHY5. AaBBX21 showed a trichome-specific expression pattern. Additionally, the AaBBX21-AaHY5 complex cooperatively activated transcription from the promoters of the downstream genes AaGSW1, AaMYB108, and AaORA, encoding positive regulators of artemisinin biosynthesis. Moreover, AaHY5 and AaBBX21 physically interacted with the A. annua E3 ubiquitin ligase CONSTITUTIVELY PHOTOMORPHOGENIC 1 (COP1). In the dark, AaCOP1 decreased the accumulation of AaHY5 and AaBBX21 and repressed the activation of genes downstream of the AaHY5-AaBBX21 complex, explaining the enhanced production of artemisinin upon light exposure. Our study provides insights into the central regulatory mechanism by which light governs terpenoid biosynthesis in the plant kingdom.
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Affiliation(s)
- Weizhi He
- Frontiers Science Center for Transformative Molecules, Joint International Research, Laboratory of Metabolic and Developmental Sciences, Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Hang Liu
- Frontiers Science Center for Transformative Molecules, Joint International Research, Laboratory of Metabolic and Developmental Sciences, Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Zhangkuanyu Wu
- Frontiers Science Center for Transformative Molecules, Joint International Research, Laboratory of Metabolic and Developmental Sciences, Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Qing Miao
- Frontiers Science Center for Transformative Molecules, Joint International Research, Laboratory of Metabolic and Developmental Sciences, Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xinyi Hu
- Frontiers Science Center for Transformative Molecules, Joint International Research, Laboratory of Metabolic and Developmental Sciences, Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xin Yan
- Frontiers Science Center for Transformative Molecules, Joint International Research, Laboratory of Metabolic and Developmental Sciences, Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Hangyu Wen
- Frontiers Science Center for Transformative Molecules, Joint International Research, Laboratory of Metabolic and Developmental Sciences, Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yaojie Zhang
- Frontiers Science Center for Transformative Molecules, Joint International Research, Laboratory of Metabolic and Developmental Sciences, Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xueqing Fu
- Frontiers Science Center for Transformative Molecules, Joint International Research, Laboratory of Metabolic and Developmental Sciences, Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Li Ren
- Institute for Agri-Food Standards and Testing Technology, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China
| | - Kexuan Tang
- Frontiers Science Center for Transformative Molecules, Joint International Research, Laboratory of Metabolic and Developmental Sciences, Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Ling Li
- Frontiers Science Center for Transformative Molecules, Joint International Research, Laboratory of Metabolic and Developmental Sciences, Key Laboratory of Urban Agriculture (South) Ministry of Agriculture, Plant Biotechnology Research Center, Fudan-SJTU-Nottingham Plant Biotechnology R&D Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
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Fu J, Liao L, Jin J, Lu Z, Sun J, Song L, Huang Y, Liu S, Huang D, Xu Y, He J, Hu B, Zhu Y, Wu F, Wang X, Deng X, Xu Q. A transcriptional cascade involving BBX22 and HY5 finely regulates both plant height and fruit pigmentation in citrus. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2024. [PMID: 38961693 DOI: 10.1111/jipb.13719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 05/13/2024] [Indexed: 07/05/2024]
Abstract
Dwarfing is a pivotal agronomic trait affecting both yield and quality. Citrus species exhibit substantial variation in plant height, among which internode length is a core element. However, the molecular mechanism governing internode elongation remains unclear. Here, we unveiled that the transcriptional cascade consisting of B-BOX DOMAIN PROTEIN 22 (BBX22) and ELONGATED HYPOCOTYL 5 (HY5) finely tunes plant height and internode elongation in citrus. Loss-of-function mutations of BBX22 in an early-flowering citrus (Citrus hindsii "SJG") promoted internode elongation and reduced pigment accumulation, whereas ectopic expression of BBX22 in SJG, sweet orange (C. sinensis), pomelo (C. maxima) or heterologous expression of BBX22 in tomato (Solanum lycopersicum) significantly decreased internode length. Furthermore, exogenous application of gibberellin A3 (GA3) rescued the shortened internode and dwarf phenotype caused by BBX22 overexpression. Additional experiments revealed that BBX22 played a dual role in regulation internode elongation and pigmentation in citrus. On the one hand, it directly bound to and activated the expression of HY5, GA metabolism gene (GA2 OXIDASE 8, GA2ox8), carotenoid biosynthesis gene (PHYTOENE SYNTHASE 1, PSY1) and anthocyanin regulatory gene (Ruby1, a MYB DOMAIN PROTEIN). On the other hand, it acted as a cofactor of HY5, enhancing the ability of HY5 to regulate target genes expression. Together, our results reveal the critical role of the transcriptional cascade consisting of BBX22 and HY5 in controlling internode elongation and pigment accumulation in citrus. Unraveling the crosstalk regulatory mechanism between internode elongation and fruit pigmentation provides key genes for breeding of novel types with both dwarf and health-beneficial fortification in citrus.
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Affiliation(s)
- Jialing Fu
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, P. R. China
- Hubei Hongshan Laboratory, Wuhan, 430070, P. R. China
| | - Li Liao
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, P. R. China
- Hubei Hongshan Laboratory, Wuhan, 430070, P. R. China
| | - Jiajing Jin
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Zhihao Lu
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Juan Sun
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Lizhi Song
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Yue Huang
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Shengjun Liu
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Ding Huang
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Yuantao Xu
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Jiaxian He
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Bin Hu
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Yiqun Zhu
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, P. R. China
| | - Fangfang Wu
- Science and Technology Innovation Research Center of Majia Pomelo, Shangrao, 334000, China
| | - Xia Wang
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, P. R. China
- Hubei Hongshan Laboratory, Wuhan, 430070, P. R. China
| | - Xiuxin Deng
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, P. R. China
- Hubei Hongshan Laboratory, Wuhan, 430070, P. R. China
| | - Qiang Xu
- National Key Laboratory for Germplasm Innovation and Utilization of Horticultural Crops, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, P. R. China
- Hubei Hongshan Laboratory, Wuhan, 430070, P. R. China
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Li N, Xu Y, Lu Y. A Regulatory Mechanism on Pathways: Modulating Roles of MYC2 and BBX21 in the Flavonoid Network. PLANTS (BASEL, SWITZERLAND) 2024; 13:1156. [PMID: 38674565 PMCID: PMC11054080 DOI: 10.3390/plants13081156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 04/05/2024] [Accepted: 04/15/2024] [Indexed: 04/28/2024]
Abstract
Genes of metabolic pathways are individually or collectively regulated, often via unclear mechanisms. The anthocyanin pathway, well known for its regulation by the MYB/bHLH/WDR (MBW) complex but less well understood in its connections to MYC2, BBX21, SPL9, PIF3, and HY5, is investigated here for its direct links to the regulators. We show that MYC2 can activate the structural genes of the anthocyanin pathway but also suppress them (except F3'H) in both Arabidopsis and Oryza when a local MBW complex is present. BBX21 or SPL9 can activate all or part of the structural genes, respectively, but the effects can be largely overwritten by the local MBW complex. HY5 primarily influences expressions of the early genes (CHS, CHI, and F3H). TF-TF relationships can be complex here: PIF3, BBX21, or SPL9 can mildly activate MYC2; MYC2 physically interacts with the bHLH (GL3) of the MBW complex and/or competes with strong actions of BBX21 to lessen a stimulus to the anthocyanin pathway. The dual role of MYC2 in regulating the anthocyanin pathway and a similar role of BBX21 in regulating BAN reveal a network-level mechanism, in which pathways are modulated locally and competing interactions between modulators may tone down strong environmental signals before they reach the network.
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Affiliation(s)
- Nan Li
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; (N.L.); (Y.X.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yunzhang Xu
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; (N.L.); (Y.X.)
- University of Chinese Academy of Sciences, Beijing 100049, China
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining 810016, China
| | - Yingqing Lu
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; (N.L.); (Y.X.)
- University of Chinese Academy of Sciences, Beijing 100049, China
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Song Z, Zhao F, Chu L, Lin H, Xiao Y, Fang Z, Wang X, Dong J, Lyu X, Yu D, Liu B, Gai J, Xu D. The GmSTF1/2-GmBBX4 negative feedback loop acts downstream of blue-light photoreceptors to regulate isoflavonoid biosynthesis in soybean. PLANT COMMUNICATIONS 2024; 5:100730. [PMID: 37817409 PMCID: PMC10873893 DOI: 10.1016/j.xplc.2023.100730] [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: 06/16/2023] [Revised: 07/18/2023] [Accepted: 10/05/2023] [Indexed: 10/12/2023]
Abstract
Isoflavonoids, secondary metabolites derived from the phenylalanine pathway, are predominantly biosynthesized in legumes, especially soybean (Glycine max). They are not only essential for plant responses to biotic and abiotic stresses but also beneficial to human health. In this study, we report that light signaling controls isoflavonoid biosynthesis in soybean. Blue-light photoreceptors (GmCRY1s, GmCRY2s, GmPHOT1s, and GmPHOT2s) and the transcription factors GmSTF1 and GmSTF2 promote isoflavonoid accumulation, whereas the E3 ubiquitin ligase GmCOP1b negatively regulates isoflavonoid biosynthesis. GmPHOT1s and GmPHOT2s stabilize GmSTF1/2, whereas GmCOP1b promotes the degradation of these two proteins in soybean. GmSTF1/2 regulate the expression of approximately 27.9% of the genes involved in soybean isoflavonoid biosynthesis, including GmPAL2.1, GmPAL2.3, and GmUGT2. They also repress the expression of GmBBX4, a negative regulator of isoflavonoid biosynthesis in soybean. In addition, GmBBX4 physically interacts with GmSTF1 and GmSTF2 to inhibit their transcriptional activation activity toward target genes related to isoflavonoid biosynthesis. Thus, GmSTF1/2 and GmBBX4 form a negative feedback loop that acts downstream of photoreceptors in the regulation of isoflavonoid biosynthesis. Our study provides novel insights into the control of isoflavonoid biosynthesis by light signaling in soybean and will contribute to the breeding of soybean cultivars with high isoflavonoid content through genetic and metabolic engineering.
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Affiliation(s)
- Zhaoqing Song
- National Center for Soybean Improvement, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - Fengyue Zhao
- National Center for Soybean Improvement, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - Li Chu
- National Center for Soybean Improvement, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - Huan Lin
- National Center for Soybean Improvement, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - Yuntao Xiao
- National Center for Soybean Improvement, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - Zheng Fang
- National Center for Soybean Improvement, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - Xuncheng Wang
- Beijing Key Laboratory of Environmentally Friendly Management of Fruit Diseases and Pests in North China, Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Jie Dong
- Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Xiangguang Lyu
- State Key Laboratory of Crop Gene Resources and Breeding, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Deyue Yu
- National Center for Soybean Improvement, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
| | - Bin Liu
- State Key Laboratory of Crop Gene Resources and Breeding, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | - Junyi Gai
- National Center for Soybean Improvement, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China.
| | - Dongqing Xu
- National Center for Soybean Improvement, State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China.
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Baranov D, Timerbaev V. Recent Advances in Studying the Regulation of Fruit Ripening in Tomato Using Genetic Engineering Approaches. Int J Mol Sci 2024; 25:760. [PMID: 38255834 PMCID: PMC10815249 DOI: 10.3390/ijms25020760] [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: 12/01/2023] [Revised: 12/28/2023] [Accepted: 01/02/2024] [Indexed: 01/24/2024] Open
Abstract
Tomato (Solanum lycopersicum L.) is one of the most commercially essential vegetable crops cultivated worldwide. In addition to the nutritional value, tomato is an excellent model for studying climacteric fruits' ripening processes. Despite this, the available natural pool of genes that allows expanding phenotypic diversity is limited, and the difficulties of crossing using classical selection methods when stacking traits increase proportionally with each additional feature. Modern methods of the genetic engineering of tomatoes have extensive potential applications, such as enhancing the expression of existing gene(s), integrating artificial and heterologous gene(s), pointing changes in target gene sequences while keeping allelic combinations characteristic of successful commercial varieties, and many others. However, it is necessary to understand the fundamental principles of the gene molecular regulation involved in tomato fruit ripening for its successful use in creating new varieties. Although the candidate genes mediate ripening have been identified, a complete picture of their relationship has yet to be formed. This review summarizes the latest (2017-2023) achievements related to studying the ripening processes of tomato fruits. This work attempts to systematize the results of various research articles and display the interaction pattern of genes regulating the process of tomato fruit ripening.
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Affiliation(s)
- Denis Baranov
- Laboratory of Expression Systems and Plant Genome Modification, Branch of Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Science, 142290 Pushchino, Russia;
- Laboratory of Plant Genetic Engineering, All-Russia Research Institute of Agricultural Biotechnology, 127550 Moscow, Russia
| | - Vadim Timerbaev
- Laboratory of Expression Systems and Plant Genome Modification, Branch of Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Science, 142290 Pushchino, Russia;
- Laboratory of Plant Genetic Engineering, All-Russia Research Institute of Agricultural Biotechnology, 127550 Moscow, Russia
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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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9
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Buelbuel S, Sakuraba Y, Sedaghatmehr M, Watanabe M, Hoefgen R, Balazadeh S, Mueller-Roeber B. Arabidopsis BBX14 negatively regulates nitrogen starvation- and dark-induced leaf senescence. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2023; 116:251-268. [PMID: 37382898 DOI: 10.1111/tpj.16374] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 06/03/2023] [Accepted: 06/14/2023] [Indexed: 06/30/2023]
Abstract
Senescence is a highly regulated process driven by developmental age and environmental factors. Although leaf senescence is accelerated by nitrogen (N) deficiency, the underlying physiological and molecular mechanisms are largely unknown. Here, we reveal that BBX14, a previously uncharacterized BBX-type transcription factor in Arabidopsis, is crucial for N starvation-induced leaf senescence. We find that inhibiting BBX14 by artificial miRNA (amiRNA) accelerates senescence during N starvation and in darkness, while BBX14 overexpression (BBX14-OX) delays it, identifying BBX14 as a negative regulator of N starvation- and dark-induced senescence. During N starvation, nitrate and amino acids like glutamic acid, glutamine, aspartic acid, and asparagine were highly retained in BBX14-OX leaves compared to the wild type. Transcriptome analysis showed a large number of senescence-associated genes (SAGs) to be differentially expressed between BBX14-OX and wild-type plants, including ETHYLENE INSENSITIVE3 (EIN3) which regulates N signaling and leaf senescence. Chromatin immunoprecipitation (ChIP) showed that BBX14 directly regulates EIN3 transcription. Furthermore, we revealed the upstream transcriptional cascade of BBX14. By yeast one-hybrid screen and ChIP, we found that MYB44, a stress-responsive MYB transcription factor, directly binds to the promoter of BBX14 and activates its expression. In addition, Phytochrome Interacting Factor 4 (PIF4) binds to the promoter of BBX14 to repress BBX14 transcription. Thus, BBX14 functions as a negative regulator of N starvation-induced senescence through EIN3 and is directly regulated by PIF4 and MYB44.
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Affiliation(s)
- Selin Buelbuel
- Max-Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam, Germany
- University of Potsdam, Institute of Biochemistry and Biology, Karl-Liebknecht-Straße 24-25, Haus 20, 14476, Potsdam, Germany
| | - Yasuhito Sakuraba
- Graduate School of Agricultural and Life Sciences, Biotechnology Research Center, The University of Tokyo, Tokyo, 113-8657, Japan
| | - Mastoureh Sedaghatmehr
- Max-Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam, Germany
- University of Potsdam, Institute of Biochemistry and Biology, Karl-Liebknecht-Straße 24-25, Haus 20, 14476, Potsdam, Germany
| | - Mutsumi Watanabe
- Max-Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam, Germany
| | - Rainer Hoefgen
- Max-Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam, Germany
| | - Salma Balazadeh
- Max-Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam, Germany
- University of Potsdam, Institute of Biochemistry and Biology, Karl-Liebknecht-Straße 24-25, Haus 20, 14476, Potsdam, Germany
| | - Bernd Mueller-Roeber
- Max-Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam, Germany
- University of Potsdam, Institute of Biochemistry and Biology, Karl-Liebknecht-Straße 24-25, Haus 20, 14476, Potsdam, Germany
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10
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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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Zhang Q, Lin L, Fang F, Cui B, Zhu C, Luo S, Yin R. Dissecting the functions of COP1 in the UVR8 pathway with a COP1 variant in Arabidopsis. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2023; 113:478-492. [PMID: 36495441 DOI: 10.1111/tpj.16059] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 11/21/2022] [Accepted: 12/02/2022] [Indexed: 06/17/2023]
Abstract
COP1 is a critical repressor of plant photomorphogenesis in darkness. However, COP1 plays distinct roles in the photoreceptor UVR8 pathway in Arabidopsis thaliana. COP1 interacts with ultraviolet B (UV-B)-activated UVR8 monomers and promotes their retention and accumulation in the nucleus. Moreover, COP1 has a function in UV-B signaling, which involves the binding of its WD40 domain to UVR8 and HY5 via conserved Val-Pro (VP) motifs of these proteins. UV-B-activated UVR8 interacts with COP1 via both the core domain and the VP motif, leading to the displacement of HY5 from COP1 and HY5 stabilization. However, it remains unclear whether the function of COP1 in UV-B signaling is solely dependent on its VP motif binding capacity and whether UV-B regulates the subcellular localization of COP1. Based on published structures of the COP1 WD40 domain, we generated a COP1 variant with a single amino acid substitution, COP1C509S , which cannot bind to VP motifs but retains the ability to interact with the UVR8 core domain. UV-B only marginally increased nuclear YFP-COP1 levels and significantly promoted YFP-COP1 accumulation in the cytosol, but did not exert the same effects on YFP-COP1C509S . Thus, the full UVR8-COP1 interaction is important for COP1 accumulation in the cytosol. Notably, UV-B signaling including activation of HY5 transcription was obviously inhibited in the Arabidopsis lines expressing YFP-COP1C509S , which cannot bind VP motifs. We conclude that the full binding of UVR8 to COP1 leads to the predominant accumulation of COP1 in the cytosol and that COP1 has an additional function in UV-B signaling besides VP binding-mediated protein destabilization.
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Affiliation(s)
- Qianwen Zhang
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan RD. Minhang District, Shanghai, 200240, China
| | - Li Lin
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan RD. Minhang District, Shanghai, 200240, China
- Key Laboratory of Urban Agriculture Ministry of Agriculture, Shanghai Jiao Tong University, 200240, Shanghai, China
- Joint Center for Single Cell Biology, Shanghai Jiao Tong University, 200240, Shanghai, China
| | - Fang Fang
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan RD. Minhang District, Shanghai, 200240, China
| | - Beimi Cui
- Institute of Molecular Plant Sciences, School of Biological Sciences, University of Edinburgh, Edinburgh, EH9 3BF, UK
| | - Cheng Zhu
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Shukun Luo
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Ruohe Yin
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan RD. Minhang District, Shanghai, 200240, China
- Key Laboratory of Urban Agriculture Ministry of Agriculture, Shanghai Jiao Tong University, 200240, Shanghai, China
- Joint Center for Single Cell Biology, Shanghai Jiao Tong University, 200240, Shanghai, China
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12
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Genome-Wide Characterization of B-Box Gene Family in Salvia miltiorrhiza. Int J Mol Sci 2023; 24:ijms24032146. [PMID: 36768475 PMCID: PMC9916448 DOI: 10.3390/ijms24032146] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 12/24/2022] [Accepted: 01/10/2023] [Indexed: 01/25/2023] Open
Abstract
B-box (BBX) is a type of zinc finger transcription factor that contains a B-box domain. BBX transcription factors play important roles in plant photomorphogenesis, signal transduction, as well as abiotic and biological stress responses. However, the BBX gene family of Salvia miltiorrhiza has not been systematically investigated to date. For this study, based on the genomic data of Salvia miltiorrhiza, 27 SmBBXs genes were identified and clustered into five evolutionary branches according to phylogenetic analysis. The promoter analysis suggested that SmBBXs may be involved in the regulation of the light responses, hormones, stress signals, and tissue-specific development. Based on the transcriptome data, the expression patterns of SmBBXs under different abiotic stresses and plant hormones were analyzed. The results revealed that the expressions of the SmBBXs genes varied under different conditions and may play essential roles in growth and development. The transient expression analysis implied that SmBBX1, SmBBX4, SmBBX9, SmBBX20, and SmBBX27 were in the nucleus. A transcriptional activation assay showed SmBBX1, SmBBX4, SmBBX20, and SmBBX24 had transactivation activities, while SmBBX27 had none. These results provided a basis for further research on the role of SmBBXs in the development of Salvia miltiorrhiza.
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13
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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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14
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Fang F, Lin L, Zhang Q, Lu M, Skvortsova MY, Podolec R, Zhang Q, Pi J, Zhang C, Ulm R, Yin R. Mechanisms of UV-B light-induced photoreceptor UVR8 nuclear localization dynamics. THE NEW PHYTOLOGIST 2022; 236:1824-1837. [PMID: 36089828 PMCID: PMC9825989 DOI: 10.1111/nph.18468] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 08/22/2022] [Indexed: 06/15/2023]
Abstract
Light regulates the subcellular localization of plant photoreceptors, a key step in light signaling. Ultraviolet-B radiation (UV-B) induces the plant photoreceptor UV RESISTANCE LOCUS 8 (UVR8) nuclear accumulation, where it regulates photomorphogenesis. However, the molecular mechanism for the UV-B-regulated UVR8 nuclear localization dynamics is unknown. With fluorescence recovery after photobleaching (FRAP), cell fractionation followed by immunoblotting and co-immunoprecipitation (Co-IP) assays we tested the function of UVR8-interacting proteins including CONSTITUTIVELY PHOTOMORPHOGENIC 1 (COP1), REPRESSOR OF UV-B PHOTOMORPHOGENESIS 1 (RUP1) and RUP2 in the regulation of UVR8 nuclear dynamics in Arabidopsis thaliana. We showed that UV-B-induced rapid UVR8 nuclear translocation is independent of COP1, which previously was shown to be required for UV-B-induced UVR8 nuclear accumulation. Instead, we provide evidence that the UV-B-induced UVR8 homodimer-to-monomer photo-switch and the concurrent size reduction of UVR8 enables its monomer nuclear translocation, most likely via free diffusion. Nuclear COP1 interacts with UV-B-activated UVR8 monomer, thereby promoting UVR8 nuclear retention. Conversely, RUP1and RUP2, whose expressions are induced by UV-B, inhibit UVR8 nuclear retention via attenuating the UVR8-COP1 interaction, allowing UVR8 to exit the nucleus. Collectively, our data suggest that UV-B-induced monomerization of UVR8 promotes its nuclear translocation via free diffusion. In the nucleus, COP1 binding promotes UVR8 monomer nuclear retention, which is counterbalanced by the major negative regulators RUP1 and RUP2.
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Affiliation(s)
- Fang Fang
- School of Agriculture and BiologyShanghai Jiao Tong University800 Dongchuan Road, Minhang DistrictShanghai200240China
| | - Li Lin
- School of Agriculture and BiologyShanghai Jiao Tong University800 Dongchuan Road, Minhang DistrictShanghai200240China
- Key Laboratory of Urban Agriculture Ministry of AgricultureShanghai Jiao Tong UniversityShanghai200240China
- Joint Center for Single Cell BiologyShanghai Jiao Tong UniversityShanghai200240China
| | - Qianwen Zhang
- School of Agriculture and BiologyShanghai Jiao Tong University800 Dongchuan Road, Minhang DistrictShanghai200240China
| | - Min Lu
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghai200025China
| | - Mariya Y. Skvortsova
- Department of Botany and Plant Biology, Section of Biology, Faculty of SciencesUniversity of GenevaCH‐1211Geneva 4Switzerland
| | - Roman Podolec
- Department of Botany and Plant Biology, Section of Biology, Faculty of SciencesUniversity of GenevaCH‐1211Geneva 4Switzerland
- Institute of Genetics and Genomics of Geneva (iGE3)University of GenevaCH‐1211Geneva 4Switzerland
| | - Qinyun Zhang
- School of Agriculture and BiologyShanghai Jiao Tong University800 Dongchuan Road, Minhang DistrictShanghai200240China
| | - Jiahao Pi
- School of Agriculture and BiologyShanghai Jiao Tong University800 Dongchuan Road, Minhang DistrictShanghai200240China
| | - Chunli Zhang
- School of Agriculture and BiologyShanghai Jiao Tong University800 Dongchuan Road, Minhang DistrictShanghai200240China
| | - Roman Ulm
- Department of Botany and Plant Biology, Section of Biology, Faculty of SciencesUniversity of GenevaCH‐1211Geneva 4Switzerland
- Institute of Genetics and Genomics of Geneva (iGE3)University of GenevaCH‐1211Geneva 4Switzerland
| | - Ruohe Yin
- School of Agriculture and BiologyShanghai Jiao Tong University800 Dongchuan Road, Minhang DistrictShanghai200240China
- Key Laboratory of Urban Agriculture Ministry of AgricultureShanghai Jiao Tong UniversityShanghai200240China
- Joint Center for Single Cell BiologyShanghai Jiao Tong UniversityShanghai200240China
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15
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Lira BS, Oliveira MJ, Shiose L, Vicente MH, Souza GPC, Floh EIS, Purgatto E, Nogueira FTS, Freschi L, Rossi M. SlBBX28 positively regulates plant growth and flower number in an auxin-mediated manner in tomato. PLANT MOLECULAR BIOLOGY 2022; 110:253-268. [PMID: 35798935 DOI: 10.1007/s11103-022-01298-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 06/26/2022] [Indexed: 06/15/2023]
Abstract
SlBBX28 is a positive regulator of auxin metabolism and signaling, affecting plant growth and flower number in tomato B-box domain-containing proteins (BBXs) comprise a family of transcription factors that regulate several processes, such as photomorphogenesis, flowering, and stress responses. For this reason, attention is being directed toward the functional characterization of these proteins, although knowledge in species other than Arabidopsis thaliana remains scarce. Particularly in the tomato, Solanum lycopersicum, only three out of 31 SlBBX proteins have been functionally characterized to date. To deepen the understanding of the role of these proteins in tomato plant development and yield, SlBBX28, a light-responsive gene, was constitutively silenced, resulting in plants with smaller leaves and fewer flowers per inflorescence. Moreover, SlBBX28 knockdown reduced hypocotyl elongation in darkness-grown tomato. Analyses of auxin content and responsiveness revealed that SlBBX28 promotes auxin-mediated responses. Altogether, the data revealed that SlBBX28 promotes auxin production and signaling, ultimately leading to proper hypocotyl elongation, leaf expansion, and inflorescence development, which are crucial traits determining tomato yield.
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Affiliation(s)
- Bruno Silvestre Lira
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Maria José Oliveira
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Lumi Shiose
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Mateus Henrique Vicente
- Escola Superior de Agricultura 'Luiz de Queiroz', Universidade de São Paulo, São Paulo, SP, Brazil
| | | | - Eny Iochevet Segal Floh
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Eduardo Purgatto
- Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, SP, Brazil
| | | | - Luciano Freschi
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Magdalena Rossi
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, São Paulo, SP, Brazil.
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16
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Bian Y, Chu L, Lin H, Qi Y, Fang Z, Xu D. PIFs- and COP1-HY5-mediated temperature signaling in higher plants. STRESS BIOLOGY 2022; 2:35. [PMID: 37676326 PMCID: PMC10441884 DOI: 10.1007/s44154-022-00059-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 08/16/2022] [Indexed: 09/08/2023]
Abstract
Plants have to cope with the surrounding changing environmental stimuli to optimize their physiological and developmental response throughout their entire life cycle. Light and temperature are two critical environmental cues that fluctuate greatly during day-night cycles and seasonal changes. These two external signals coordinately control the plant growth and development. Distinct spectrum of light signals are perceived by a group of wavelength-specific photoreceptors in plants. PIFs and COP1-HY5 are two predominant signaling hubs that control the expression of a large number of light-responsive genes and subsequent light-mediated development in plants. In parallel, plants also transmit low or warm temperature signals to these two regulatory modules that precisely modulate the responsiveness of low or warm temperatures. The core component of circadian clock ELF3 integrates signals from light and warm temperatures to regulate physiological and developmental processes in plants. In this review, we summarize and discuss recent advances and progresses on PIFs-, COP1-HY5- and ELF3-mediated light, low or warm temperature signaling, and highlight emerging insights regarding the interactions between light and low or warm temperature signal transduction pathways in the control of plant growth.
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Affiliation(s)
- 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
| | - Li Chu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Huan Lin
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yaoyao Qi
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Zheng Fang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, College of Agriculture, Nanjing Agricultural University, Nanjing, 210095, 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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17
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Podolec R, Wagnon TB, Leonardelli M, Johansson H, Ulm R. Arabidopsis B-box transcription factors BBX20-22 promote UVR8 photoreceptor-mediated UV-B responses. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 111:422-439. [PMID: 35555928 PMCID: PMC9541035 DOI: 10.1111/tpj.15806] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 04/26/2022] [Accepted: 05/10/2022] [Indexed: 06/01/2023]
Abstract
Plants undergo photomorphogenic development in the presence of light. Photomorphogenesis is repressed by the E3 ubiquitin ligase CONSTITUTIVELY PHOTOMORPHOGENIC 1 (COP1), which binds to substrates through their valine-proline (VP) motifs. The UV RESISTANCE LOCUS 8 (UVR8) photoreceptor senses UV-B and inhibits COP1 through the cooperative binding of its own VP motif and photosensing core to COP1, thereby preventing COP1 binding to substrates, including the basic leucine zipper (bZIP) transcriptional regulator ELONGATED HYPOCOTYL 5 (HY5). As a key promoter of visible light and UV-B photomorphogenesis, HY5 requires coregulators for its function. The B-box family transcription factors BBX20-BBX22 were recently described as HY5 rate-limiting coactivators under red light, but their role in UVR8 signaling was unknown. Here we describe a hypermorphic bbx21-3D mutant with enhanced photomorphogenesis, carrying a proline-to-leucine mutation at position 314 in the VP motif that impairs the interaction with and regulation by COP1. We show that BBX21 and BBX22 are UVR8-dependently stabilized after UV-B exposure, which is counteracted by a repressor induced by HY5/BBX activity. bbx20 bbx21 bbx22 mutants under UV-B are impaired in hypocotyl growth inhibition, photoprotective pigment accumulation and the expression of several HY5-dependent genes under continuous UV-B, but the immediate induction of marker genes after exposure to UV-B remains surprisingly rather unaffected. We conclude that BBX20-BBX22 contribute to HY5 activity in a subset of UV-B responses, but that additional, presently unknown, coactivators for HY5 are functional in early UVR8 signaling.
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Affiliation(s)
- Roman Podolec
- Department of Botany and Plant Biology, Section of Biology, Faculty of SciencesUniversity of GenevaCH‐1211Geneva 4Switzerland
- Institute of Genetics and Genomics of Geneva (iGE3)University of GenevaGenevaSwitzerland
| | - Timothée B. Wagnon
- Department of Botany and Plant Biology, Section of Biology, Faculty of SciencesUniversity of GenevaCH‐1211Geneva 4Switzerland
| | - Manuela Leonardelli
- Department of Botany and Plant Biology, Section of Biology, Faculty of SciencesUniversity of GenevaCH‐1211Geneva 4Switzerland
| | - Henrik Johansson
- Institute of Biology/Applied GeneticsDahlem Centre of Plant Sciences (DCPS), Freie Universität BerlinBerlinGermany
| | - Roman Ulm
- Department of Botany and Plant Biology, Section of Biology, Faculty of SciencesUniversity of GenevaCH‐1211Geneva 4Switzerland
- Institute of Genetics and Genomics of Geneva (iGE3)University of GenevaGenevaSwitzerland
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Zhang C, Wu Y, Liu X, Zhang J, Li X, Lin L, Yin R. Pivotal roles of ELONGATED HYPOCOTYL5 in regulation of plant development and fruit metabolism in tomato. PLANT PHYSIOLOGY 2022; 189:527-540. [PMID: 35312008 PMCID: PMC9157105 DOI: 10.1093/plphys/kiac133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 03/02/2022] [Indexed: 06/14/2023]
Abstract
The transcription factor ELONGATED HYPOCOTYL5 (HY5) plays critical roles in plant photomorphogenesis. Previous studies on HY5 have mainly focused on the seedling stage in Arabidopsis (Arabidopsis thaliana), and its functions in other plant species have not been well characterized, particularly at adult stages of development. In this report, we investigated the functions of tomato (Solanum lycopersicum) HY5 (SlHY5) from seedlings to adult plants with a focus on fruits. Genome-edited slhy5 mutants exhibited typical compromised photomorphogenesis in response to various light conditions. The slhy5 mutants showed reduced primary root length and secondary root number, which is associated with altered auxin signaling. SlHY5 promoted chlorophyll biosynthesis from seedling to adult stages. Notably, the promotive role of SlHY5 on chlorophyll accumulation was more pronounced on the illuminated side of green fruits than on their shaded side. Consistent with this light-dependent effect, we determined that SlHY5 protein is stabilized by light. Transcriptome and metabolome analyses in fruits revealed that SlHY5 has major functions in the regulation of metabolism, including the biosynthesis of phenylpropanoids and steroidal glycoalkaloids. These data demonstrate that SlHY5 performs both shared and distinct functions in relation to its Arabidopsis counterpart. The manipulation of SlHY5 represents a powerful tool to influence the two vital agricultural traits of seedling fitness and fruit quality in tomato.
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Affiliation(s)
- Chunli Zhang
- Shanghai Collaborative Innovation Center of Agri-Seeds/School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
- Key Laboratory of Urban Agriculture Ministry of Agriculture, Shanghai Jiao Tong University, Shanghai 200240, China
- Joint Center for Single Cell Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yujie Wu
- Shanghai Collaborative Innovation Center of Agri-Seeds/School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xiaorui Liu
- Shanghai Collaborative Innovation Center of Agri-Seeds/School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jiayi Zhang
- Shanghai Collaborative Innovation Center of Agri-Seeds/School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xin Li
- Instrumental Analysis Center of Shanghai Jiao Tong University, Shanghai 200240, China
| | - Li Lin
- Shanghai Collaborative Innovation Center of Agri-Seeds/School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
- Key Laboratory of Urban Agriculture Ministry of Agriculture, Shanghai Jiao Tong University, Shanghai 200240, China
- Joint Center for Single Cell Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Ruohe Yin
- Shanghai Collaborative Innovation Center of Agri-Seeds/School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
- Key Laboratory of Urban Agriculture Ministry of Agriculture, Shanghai Jiao Tong University, Shanghai 200240, China
- Joint Center for Single Cell Biology, Shanghai Jiao Tong University, Shanghai 200240, China
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Qian M, Wu H, Yang C, Zhu W, Shi B, Zheng B, Wang S, Zhou K, Gao A. RNA-Seq reveals the key pathways and genes involved in the light-regulated flavonoids biosynthesis in mango ( Mangifera indica L.) peel. FRONTIERS IN PLANT SCIENCE 2022; 13:1119384. [PMID: 36743534 PMCID: PMC9890063 DOI: 10.3389/fpls.2022.1119384] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 12/30/2022] [Indexed: 05/20/2023]
Abstract
INTRODUCTION Flavonoids are important water soluble secondary metabolites in plants, and light is one of the most essential environmental factors regulating flavonoids biosynthesis. In the previous study, we found bagging treatment significantly inhibited the accumulation of flavonols and anthocyanins but promoted the proanthocyanidins accumulation in the fruit peel of mango (Mangifera indica L.) cultivar 'Sensation', while the relevant molecular mechanism is still unknown. METHODS In this study, RNA-seq was conducted to identify the key pathways and genes involved in the light-regulated flavonoids biosynthesis in mango peel. RESULTS By weighted gene co-expression network analysis (WGCNA), 16 flavonoids biosynthetic genes were crucial for different flavonoids compositions biosynthesis under bagging treatment in mango. The higher expression level of LAR (mango026327) in bagged samples might be the reason why light inhibits proanthocyanidins accumulation in mango peel. The reported MYB positively regulating anthocyanins biosynthesis in mango, MiMYB1, has also been identified by WGCNA in this study. Apart from MYB and bHLH, ERF, WRKY and bZIP were the three most important transcription factors (TFs) involved in the light-regulated flavonoids biosynthesis in mango, with both activators and repressors. Surprisingly, two HY5 transcripts, which are usually induced by light, showed higher expression level in bagged samples. DISCUSSION Our results provide new insights of the regulatory effect of light on the flavonoids biosynthesis in mango fruit peel.
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Affiliation(s)
- Minjie Qian
- Sanya Nanfan Research Institute of Hainan University, Sanya, China
| | - Hongxia Wu
- Ministry of Agriculture Key Laboratory of Tropical Fruit Biology, South Subtropical Crops Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, China
| | - Chengkun Yang
- Sanya Nanfan Research Institute of Hainan University, Sanya, China
- Key Laboratory of Quality Regulation of Tropical Horticultural Crop in Hainan Province, School of Horticulture, Hainan University, Haikou, China
| | - Wencan Zhu
- Sanya Nanfan Research Institute of Hainan University, Sanya, China
- Key Laboratory of Quality Regulation of Tropical Horticultural Crop in Hainan Province, School of Horticulture, Hainan University, Haikou, China
| | - Bin Shi
- Sanya Nanfan Research Institute of Hainan University, Sanya, China
- Key Laboratory of Quality Regulation of Tropical Horticultural Crop in Hainan Province, School of Horticulture, Hainan University, Haikou, China
| | - Bin Zheng
- Ministry of Agriculture Key Laboratory of Tropical Fruit Biology, South Subtropical Crops Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, China
| | - Songbiao Wang
- Ministry of Agriculture Key Laboratory of Tropical Fruit Biology, South Subtropical Crops Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, China
| | - Kaibing Zhou
- Sanya Nanfan Research Institute of Hainan University, Sanya, China
- Key Laboratory of Quality Regulation of Tropical Horticultural Crop in Hainan Province, School of Horticulture, Hainan University, Haikou, China
- *Correspondence: Kaibing Zhou, ; Aiping Gao,
| | - Aiping Gao
- Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences & Ministry of Agriculture Key Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern China, Haikou, China
- *Correspondence: Kaibing Zhou, ; Aiping Gao,
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