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Wang R, Yang X, Wang T, Li B, Li P, Zhang Q. Integration of Metabolomic and Transcriptomic Analyses Reveals the Molecular Mechanisms of Flower Color Formation in Prunus mume. PLANTS (BASEL, SWITZERLAND) 2024; 13:1077. [PMID: 38674486 PMCID: PMC11054544 DOI: 10.3390/plants13081077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 04/04/2024] [Accepted: 04/07/2024] [Indexed: 04/28/2024]
Abstract
Flower color is an important trait that affects the economic value of Prunus mume, a famous ornamental plant in the Rosaceae family. P. mume with purple-red flowers is uniquely charming and highly favored in landscape applications. However, little is known about its flower coloring mechanism, which stands as a critical obstacle on the path to innovative breeding for P. mume flower color. In this study, transcriptomic and targeted metabolomic analyses of purple-red P. mume and white P. mume were performed to elucidate the mechanism of flower color formation. In addition, the expression patterns of key genes were analyzed using an RT-qPCR experiment. The results showed that the differential metabolites were significantly enriched in the flavonoid synthesis pathway. A total of 14 anthocyanins emerged as the pivotal metabolites responsible for the differences in flower color between the two P. mume cultivars, comprising seven cyanidin derivatives, five pelargonium derivatives, and two paeoniflorin derivatives. Moreover, the results clarified that the metabolic pathway determining flower color in purple-red P. mume encompasses two distinct branches: cyanidin and pelargonidin, excluding the delphinidin branch. Additionally, through the integrated analysis of transcriptomic and metabolomic data, we identified 18 key genes responsible for anthocyanin regulation, thereby constructing the gene regulatory network for P. mume anthocyanin synthesis. Among them, ten genes (PmCHI, PmGT2, PmGT5, PmGST3, PmMYB17, PmMYB22, PmMYB23, PmbHLH4, PmbHLH10, and PmbHLH20) related to anthocyanin synthesis were significantly positively correlated with anthocyanin contents, indicating that they may be the key contributors to anthocyanin accumulation. Our investigation contributes a novel perspective to understanding the mechanisms responsible for flower color formation in P. mume. The findings of this study introduce novel strategies for molecular design breeding aimed at manipulating flower color in P. mume.
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Affiliation(s)
- Ruyi Wang
- College of Landscape and Tourism, Hebei Agricultural University, Baoding 071000, China; (R.W.); (X.Y.)
| | - Xin Yang
- College of Landscape and Tourism, Hebei Agricultural University, Baoding 071000, China; (R.W.); (X.Y.)
- College of Forestry, Hebei Agricultural University, Baoding 071000, China
| | - Tao Wang
- China National Botanical Garden, Beijing 100089, China
| | - Baohui Li
- College of Landscape and Tourism, Hebei Agricultural University, Baoding 071000, China; (R.W.); (X.Y.)
- College of Forestry, Hebei Agricultural University, Baoding 071000, China
| | - Ping Li
- College of Landscape and Tourism, Hebei Agricultural University, Baoding 071000, China; (R.W.); (X.Y.)
| | - Qin Zhang
- College of Landscape and Tourism, Hebei Agricultural University, Baoding 071000, China; (R.W.); (X.Y.)
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Li J, Wu K, Li L, Ma G, Fang L, Zeng S. Identification of HpMYB1 inducing anthocyanin accumulation in Hippeastrum Hybridum tepals by RNA-seq. BMC PLANT BIOLOGY 2023; 23:594. [PMID: 38012575 PMCID: PMC10683291 DOI: 10.1186/s12870-023-04582-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 11/03/2023] [Indexed: 11/29/2023]
Abstract
BACKGROUND Cultivated Hippeastrum × hybridum is a popular ornamental plant with large and colorful flowers, long flowering duration, and high commercial value. As its main ornamental feature, its flower color is related to the anthocyanin content in the tepals. However, the molecular regulatory mechanisms of anthocyanin biosynthesis in H. × hybridum have not yet been elucidated. RESULTS In the present study, 12 cDNA libraries of four stages of H.× hybridum 'Royal Velvet' tepal development were used for RNA-seq, obtaining 79.83 gigabases (GB) of clean data. The data were assembled into 148,453 unigenes, and 11,262 differentially expressed genes were identified. Forty key enzymes participating in anthocyanin biosynthesis were investigated, and the results showed that most of the anthocyanin structural genes were expressed at low levels in S1 and were markedly upregulated in S2 and S3. The expression profiles of 12 selected genes were verified by qRT-PCR. Furthermore, the R2R3-MYB transcription factor (TF), HpMYB1, involved in the regulation of anthocyanin biosynthesis was identified by sequence, expression pattern, and subcellular localization analyses. Its overexpression in tobacco significantly increased the anthocyanin levels in various tissues and activated anthocyanin-related genes. CONCLUSIONS Using RNA-seq technology, we successfully identified a potential R2R3-MYB gene, HpMYB1, that regulates anthocyanin biosynthesis in H.× hybridum 'Royal Velvet'. Our findings provide basic transcript information and valuable transcriptome data for further identification of key genes involved in anthocyanin biosynthesis and can be applied in the artificial breeding of new H. × hybridum cultivars with enhanced ornamental value.
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Affiliation(s)
- Ji Li
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Gene Improvement, South China Botanical Garden, Chinese Academy of Sciences, 510650, Guangzhou, China
- University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Kunlin Wu
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Gene Improvement, South China Botanical Garden, Chinese Academy of Sciences, 510650, Guangzhou, China
| | - Lin Li
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Gene Improvement, South China Botanical Garden, Chinese Academy of Sciences, 510650, Guangzhou, China
| | - Guohua Ma
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Gene Improvement, South China Botanical Garden, Chinese Academy of Sciences, 510650, Guangzhou, China
| | - Lin Fang
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Gene Improvement, South China Botanical Garden, Chinese Academy of Sciences, 510650, Guangzhou, China.
- Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, 510650, Guangzhou, China.
| | - Songjun Zeng
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Gene Improvement, South China Botanical Garden, Chinese Academy of Sciences, 510650, Guangzhou, China.
- Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, 510650, Guangzhou, China.
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Liu Z, Wang Y, Guan P, Hu J, Sun L. Interaction of VvDELLA2 and VvCEB1 Mediates Expression of Expansion-Related Gene during GA-Induced Enlargement of Grape Fruit. Int J Mol Sci 2023; 24:14870. [PMID: 37834318 PMCID: PMC10573625 DOI: 10.3390/ijms241914870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 09/30/2023] [Accepted: 10/01/2023] [Indexed: 10/15/2023] Open
Abstract
Exogenous gibberellin treatment can promote early growth of grape fruit, but the underlying regulatory mechanisms are not well understood. Here, we show that VvDELLA2 directly regulates the activity of the VvCEB1 transcription factor, a key regulator in the control of cell expansion in grape fruit. Our results show that VvCEB1 binds directly to the promoters of cell expansion-related genes in grape fruit and acts as a transcriptional activator, while VvDELLA2 blocks VvCEB1 function by binding to its activating structural domain. The exogenous gibberellin treatment relieved this inhibition by promoting the degradation of VvDELLA2 protein, thus, allowing VvCEB1 to transcriptionally activate the expression of cell expansion-related genes. In conclusion, we conclude that exogenous GA3 treatment regulates early fruit expansion by affecting the VvDELLA-VvCEB1 interaction in grape fruit development.
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Affiliation(s)
- Zhenhua Liu
- Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing Engineering Research Center for Deciduous Fruit Trees, Beijing 100093, China; (Z.L.); (Y.W.)
- Beijing Engineering Research Center for Deciduous Fruit Trees, Beijing 100093, China
| | - Yan Wang
- Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing Engineering Research Center for Deciduous Fruit Trees, Beijing 100093, China; (Z.L.); (Y.W.)
- Beijing Engineering Research Center for Deciduous Fruit Trees, Beijing 100093, China
| | - Pingyin Guan
- College of Horticulture, China Agricultural University, Beijing 100193, China;
| | - Jianfang Hu
- College of Horticulture, China Agricultural University, Beijing 100193, China;
| | - Lei Sun
- Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing Engineering Research Center for Deciduous Fruit Trees, Beijing 100093, China; (Z.L.); (Y.W.)
- Beijing Engineering Research Center for Deciduous Fruit Trees, Beijing 100093, China
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Yang K, Hou Y, Wu M, Pan Q, Xie Y, Zhang Y, Sun F, Zhang Z, Wu J. DoMYB5 and DobHLH24, Transcription Factors Involved in Regulating Anthocyanin Accumulation in Dendrobium officinale. Int J Mol Sci 2023; 24:ijms24087552. [PMID: 37108715 PMCID: PMC10142772 DOI: 10.3390/ijms24087552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 04/10/2023] [Accepted: 04/15/2023] [Indexed: 04/29/2023] Open
Abstract
As a kind of orchid plant with both medicinal and ornamental value, Dendrobium officinale has garnered increasing research attention in recent years. The MYB and bHLH transcription factors play important roles in the synthesis and accumulation of anthocyanin. However, how MYB and bHLH transcription factors work in the synthesis and accumulation of anthocyanin in D. officinale is still unclear. In this study, we cloned and characterized one MYB and one bHLH transcription factor, namely, D. officinale MYB5 (DoMYB5) and D. officinaleb bHLH24 (DobHLH24), respectively. Their expression levels were positively correlated with the anthocyanin content in the flowers, stems, and leaves of D. officinale varieties with different colors. The transient expression of DoMYB5 and DobHLH24 in D. officinale leaf and their stable expression in tobacco significantly promoted the accumulation of anthocyanin. Both DoMYB5 and DobHLH24 could directly bind to the promoters of D. officinale CHS (DoCHS) and D. officinale DFR (DoDFR) and regulate DoCHS and DoDFR expression. The co-transformation of the two transcription factors significantly enhanced the expression levels of DoCHS and DoDFR. DoMYB5 and DobHLH24 may enhance the regulatory effect by forming heterodimers. Drawing on the results of our experiments, we propose that DobHLH24 may function as a regulatory partner by interacting directly with DoMYB5 to stimulate anthocyanin accumulation in D. officinale.
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Affiliation(s)
- Kun Yang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yibin Hou
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Mei Wu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Qiuyu Pan
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yilong Xie
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yusen Zhang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Fenghang Sun
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Zhizhong Zhang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jinghua Wu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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Li X, Zhang MS, Zhao LQ, Ling-Hu QQ, Xu G. The study on interacting factors and functions of GASA6 in Jatropha curcas L. BMC PLANT BIOLOGY 2023; 23:99. [PMID: 36800929 PMCID: PMC9938578 DOI: 10.1186/s12870-023-04067-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 01/16/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND The gibberellic acid-stimulated Arabidopsis (GASA) gene encodes a class of cysteine-rich functional proteins and is ubiquitous in plants. Most GASA proteins are influence the signal transmission of plant hormones and regulate plant growth and development, however, their function in Jatropha curcas is still unknown. RESULTS In this study, we cloned JcGASA6, a member of the GASA family, from J. curcas. The JcGASA6 protein has a GASA-conserved domain and is located in the tonoplast. The three-dimensional structure of the JcGASA6 protein is highly consistent with the antibacterial protein Snakin-1. Additionally, the results of the yeast one-hybrid (Y1H) assay showed that JcGASA6 was activated by JcERF1, JcPYL9, and JcFLX. The results of the Y2H assay showed that both JcCNR8 and JcSIZ1 could interact with JcGASA6 in the nucleus. The expression of JcGASA6 increased continuously during male flower development, and the overexpression of JcGASA6 was associated with filament elongation of the stamens in tobacco. CONCLUSION JcGASA6, a member of the GASA family in J. curcas, play an important role in growth regulation and floral development (especially in male flower). It is also involved in the signal transduction of hormones, such as ABA, ET, GA, BR, and SA. Also, JcGASA6 is a potential antimicrobial protein determined by its three-dimensional structure.
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Affiliation(s)
- Xue Li
- School of Chinese Ethnic Medicine, Guizhou Minzu University, Guiyang, 550025, Guizhou, China
- School of Chinese Medicinal Resource, Guangdong Pharmaceutical University, Guangzhou, 510006, Guangdong, China
- School of Life Sciences/Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Guizhou University, Guiyang, 550025, Guizhou, China
| | - Ming-Sheng Zhang
- School of Life Sciences/Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Guizhou University, Guiyang, 550025, Guizhou, China
| | | | - Qian-Qian Ling-Hu
- School of Life Sciences/Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Guizhou University, Guiyang, 550025, Guizhou, China
| | - Gang Xu
- School of Chinese Medicinal Resource, Guangdong Pharmaceutical University, Guangzhou, 510006, Guangdong, China.
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Zhang S, Ren Y, Zhao Q, Wu Y, Zhuo Y, Li H. Drought-induced CsMYB6 interacts with CsbHLH111 to regulate anthocyanin biosynthesis in Chaenomeles speciosa. PHYSIOLOGIA PLANTARUM 2023; 175:e13859. [PMID: 36688571 DOI: 10.1111/ppl.13859] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/24/2022] [Accepted: 12/20/2022] [Indexed: 06/17/2023]
Abstract
Chaenomeles speciosa is a plant with high ornamental value, and the color of its petals deepens obviously under drought stress. To understand the mechanism of drought-induced reddening of C. speciosa petal color, the metabolites and transcriptomics of petals from 4% PEG-8000-treated and control cuttings were analyzed. In this study, the analysis of metabolites revealed the accumulation of anthocyanins in petals of PEG-treated cuttings, indicating anthocyanins might be the reason for the deepening of petal color. By using transcriptomics, we identified CsMYB6 as an overexpressed transcription factor in PEG-treated samples. Transient overexpression and suppression of CsMYB6 revealed that it is a key transcription factor for anthocyanin synthesis. We identified genes related to anthocyanin biosynthesis and constructed a network of drought- and anthocyanin-related genes (such as CsMYB6, CsbHLH111, CsANS, CsDFR, and CsUFGT). Further experiments indicated that CsMYB6 directly interacted with CsbHLH111, and this interaction increased the binding ability of CsMYB6 to the promoter regions of three structural genes of anthocyanin biosynthesis: CsANS, CsDFR, and CsUFGT. Our findings provide a molecular basis and new insight into drought-induced anthocyanin biosynthesis in C. speciosa.
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Affiliation(s)
- Shuangyu Zhang
- Research Institute for Landscape and Ornamental Plant, College of Landscape Architecture and Art, Northwest A&F University, Yangling, China
| | - Yanshen Ren
- Research Institute for Landscape and Ornamental Plant, College of Landscape Architecture and Art, Northwest A&F University, Yangling, China
| | - Qianyi Zhao
- Research Institute for Landscape and Ornamental Plant, College of Landscape Architecture and Art, Northwest A&F University, Yangling, China
| | - Yang Wu
- Research Institute for Landscape and Ornamental Plant, College of Landscape Architecture and Art, Northwest A&F University, Yangling, China
| | - Yue Zhuo
- Research Institute for Landscape and Ornamental Plant, College of Landscape Architecture and Art, Northwest A&F University, Yangling, China
| | - Houhua Li
- Research Institute for Landscape and Ornamental Plant, College of Landscape Architecture and Art, Northwest A&F University, Yangling, China
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7
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Gan S, Zheng G, Zhu S, Qian J, Liang L. Integrative Analysis of Metabolome and Transcriptome Reveals the Mechanism of Color Formation in Liriope spicata Fruit. Metabolites 2022; 12:metabo12020144. [PMID: 35208218 PMCID: PMC8879266 DOI: 10.3390/metabo12020144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/27/2022] [Accepted: 02/01/2022] [Indexed: 02/01/2023] Open
Abstract
Liriope spicata is an important ornamental ground cover plant, with a fruit color that turns from green to black during the development and ripening stages. However, the material basis and regulatory mechanism of the color variation remains unclear. In this study, a total of 31 anthocyanins and 2 flavonols were identified from the skin of L. spicata fruit via integrative analysis on the metabolome and transcriptome of three developmental stages. The pigments of black/mature fruits are composed of five common anthocyanin compounds, of which Peonidin 3–O–rutinoside and Delphinidin 3–O–glucoside are the most differential metabolites for color conversion. Using dual-omics joint analysis, the mechanism of color formation was obtained as follows. The expression of structural genes including 4CL, F3H, F3′H, F3′5′H and UFGT were activated due to the upregulation of transcription factor genes MYB and bHLH. As a result, a large amount of precursor substances for the synthesis of flavonoids accumulated. After glycosylation, stable pigments were generated which promoted the accumulation of anthocyanins and the formation of black skin.
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Zhang Y, Xu S, Ma H, Duan X, Gao S, Zhou X, Cheng Y. The R2R3-MYB gene PsMYB58 positively regulates anthocyanin biosynthesis in tree peony flowers. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 164:279-288. [PMID: 34020168 DOI: 10.1016/j.plaphy.2021.04.034] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 04/28/2021] [Indexed: 06/12/2023]
Abstract
Tree peony (Paeonia suffruticosa Andr.) is a well-known ornamental flower in China with diverse colors. Flower color is one of the most important economic characteristics of tree peony and is mainly determined by anthocyanins. In this study, we cloned a PsMYB58 gene, which contained a 654 bp open reading frame (ORF), encoding a polypeptide of 218 amino acids. Sequence and phylogenetic analysis indicated that PsMYB58 is an anthocyanin regulatory R2R3-MYB gene. The transcription levels of PsMYB58 in different developmental stages of tree peony flowers were similar to those of the anthocyanin biosynthetic genes PsCHS, PsCHI, PsDFR, and PsANS. A bimolecular fluorescence complementation assay showed that PsMYB58 interacted with PsbHLH1 and PsbHLH3 in vivo. The overexpression of PsMYB58 in tobacco enhanced anthocyanin accumulation in various organs. Comparative transcriptome analysis showed that 943 genes were upregulated and 1203 downregulated in PsMYB58 transgenic tobacco, among which genes involved in the anthocyanin pathway were positively activated. Real-time quantitative PCR analysis verified that anthocyanin biosynthetic genes, including NtCHS, NtCHI, NtF3H, NtF3'H, NtDFR, and NtANS, and an anthocyanin regulatory bHLH gene, NtAN1b, were significantly upregulated in PsMYB58 transgenic tobacco. Our results indicated that PsMYB58 is a positive anthocyanin regulator in tree peony flowers. In summary, the functional identification of PsMYB58 furthers our understanding of the mechanism of peony flower color formation, thus providing a foundation for flower color improvement and molecular breeding.
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Affiliation(s)
- Yanzhao Zhang
- Life Science Department, Luoyang Normal University, Luoyang 471022, China.
| | - Shuzhen Xu
- Life Science Department, Luoyang Normal University, Luoyang 471022, China
| | - Huiping Ma
- Luoyang Institute of Agriculture and Forestry Sciences, Luoyang 471022, China
| | - Xujia Duan
- Life Science Department, Luoyang Normal University, Luoyang 471022, China
| | - Shouxin Gao
- Life Science Department, Luoyang Normal University, Luoyang 471022, China
| | - Xiaojun Zhou
- Life Science Department, Luoyang Normal University, Luoyang 471022, China
| | - Yanwei Cheng
- Life Science Department, Luoyang Normal University, Luoyang 471022, China
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Jia N, Wang JJ, Liu J, Jiang J, Sun J, Yan P, Sun Y, Wan P, Ye W, Fan B. DcTT8, a bHLH transcription factor, regulates anthocyanin biosynthesis in Dendrobium candidum. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 162:603-612. [PMID: 33774465 DOI: 10.1016/j.plaphy.2021.03.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 03/04/2021] [Indexed: 05/01/2023]
Abstract
Dendrobium candidum stems are used as Chinese medicine and functional food. Red stems of D. candidum are rich in anthocyanins, which attract pollinator insects, protect the plants against environmental stress, and improve human health. The regulatory mechanisms of anthocyanin biosynthesis and stem color differentiation in D. candidum are not fully understood. Using transcriptome profiling, we identified a basic helix-loop-helix transcription factor (DcTT8) involved in anthocyanin biosynthesis in D. candidum stems. Ultraperformance liquid chromatography-tandem mass spectrometry was used to determine pigment contents and compositions in red and green stems, revealing that cyanidin is responsible for the red color. DcTT8 could bind the DcF3'H and DcUFGT promoters and finely regulate DcF3'H and DcUFGT expression. Our data indicate that DcTT8 participates in anthocyanin biosynthesis and offers novel insights into the transcriptional regulation of anthocyanin biosynthesis in D. candidum.
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Affiliation(s)
- Ning Jia
- Institute of Food Science and Technology, Chinese Academy of Agricultural Science, Beijing, 100193, China; Laboratory of Quality & Safety Risk Assessment on Agro-products Processing, Ministry of Agriculture and Rural Affairs, Beijing, 100193, China.
| | - Jing-Jing Wang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Science, Beijing, 100193, China.
| | - Jiameng Liu
- Institute of Food Science and Technology, Chinese Academy of Agricultural Science, Beijing, 100193, China; Laboratory of Quality & Safety Risk Assessment on Agro-products Processing, Ministry of Agriculture and Rural Affairs, Beijing, 100193, China.
| | - Jinlan Jiang
- Institute of Medicinal Plant Sciences, Sanming Academy of Agricultural Sciences, Shaxian, Fujian, 365050, China.
| | - Jing Sun
- Institute of Food Science and Technology, Chinese Academy of Agricultural Science, Beijing, 100193, China; Laboratory of Quality & Safety Risk Assessment on Agro-products Processing, Ministry of Agriculture and Rural Affairs, Beijing, 100193, China.
| | - Peipei Yan
- Institute of Medicinal Plant Sciences, Sanming Academy of Agricultural Sciences, Shaxian, Fujian, 365050, China.
| | - Yufeng Sun
- Institute of Food Science and Technology, Chinese Academy of Agricultural Science, Beijing, 100193, China; Laboratory of Quality & Safety Risk Assessment on Agro-products Processing, Ministry of Agriculture and Rural Affairs, Beijing, 100193, China.
| | - Peiyu Wan
- Institute of Medicinal Plant Sciences, Sanming Academy of Agricultural Sciences, Shaxian, Fujian, 365050, China.
| | - Wei Ye
- Institute of Medicinal Plant Sciences, Sanming Academy of Agricultural Sciences, Shaxian, Fujian, 365050, China.
| | - Bei Fan
- Institute of Food Science and Technology, Chinese Academy of Agricultural Science, Beijing, 100193, China; Laboratory of Quality & Safety Risk Assessment on Agro-products Processing, Ministry of Agriculture and Rural Affairs, Beijing, 100193, China.
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10
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Li X, Xiang F, Han W, Qie B, Zhai R, Yang C, Wang Z, Xu L. The MIR-Domain of PbbHLH2 Is Involved in Regulation of the Anthocyanin Biosynthetic Pathway in "Red Zaosu" ( PyrusBretschneideri Rehd.) Pear Fruit. Int J Mol Sci 2021; 22:ijms22063026. [PMID: 33809693 PMCID: PMC8002321 DOI: 10.3390/ijms22063026] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 03/10/2021] [Accepted: 03/14/2021] [Indexed: 02/05/2023] Open
Abstract
The N-terminal of Myc-like basic helix-loop-helix transcription factors (bHLH TFs) contains an interaction domain, namely the MYB-interacting region (MIR), which interacts with the R2R3-MYB proteins to regulate genes involved in the anthocyanin biosynthetic pathway. However, the functions of MIR-domain bHLHs in this pathway are not fully understood. In this study, PbbHLH2 containing the MIR-domain was identified and its function investigated. The overexpression of PbbHLH2 in ”Zaosu” pear peel increased the anthocyanin content and the expression levels of late biosynthetic genes. Bimolecular fluorescence complementation showed that PbbHLH2 interacted with R2R3-MYB TFs PbMYB9, 10, and 10b in onion epidermal cells and confirmed that MIR-domain plays important roles in the interaction between the MIR-domain bHLH and R2R3-MYB TFs. Moreover, PbbHLH2 bound and activated the dihydroflavonol reductase promoter in yeast one-hybrid (Y1H) and dual-luciferase assays. Taken together these results suggested that the MIR domain of PbbHLH2 regulated anthocyanin biosynthesis in pear fruit peel.
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Affiliation(s)
| | | | | | | | | | | | | | - Lingfei Xu
- Correspondence: ; Tel.: +86-029–87081023
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11
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Jiang Z, Tu L, Yang W, Zhang Y, Hu T, Ma B, Lu Y, Cui X, Gao J, Wu X, Tong Y, Zhou J, Song Y, Liu Y, Liu N, Huang L, Gao W. The chromosome-level reference genome assembly for Panax notoginseng and insights into ginsenoside biosynthesis. PLANT COMMUNICATIONS 2021; 2:100113. [PMID: 33511345 PMCID: PMC7816079 DOI: 10.1016/j.xplc.2020.100113] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 08/25/2020] [Accepted: 09/17/2020] [Indexed: 05/13/2023]
Abstract
Panax notoginseng, a perennial herb of the genus Panax in the family Araliaceae, has played an important role in clinical treatment in China for thousands of years because of its extensive pharmacological effects. Here, we report a high-quality reference genome of P. notoginseng, with a genome size up to 2.66 Gb and a contig N50 of 1.12 Mb, produced with third-generation PacBio sequencing technology. This is the first chromosome-level genome assembly for the genus Panax. Through genome evolution analysis, we explored phylogenetic and whole-genome duplication events and examined their impact on saponin biosynthesis. We performed a detailed transcriptional analysis of P. notoginseng and explored gene-level mechanisms that regulate the formation of characteristic tubercles. Next, we studied the biosynthesis and regulation of saponins at temporal and spatial levels. We combined multi-omics data to identify genes that encode key enzymes in the P. notoginseng terpenoid biosynthetic pathway. Finally, we identified five glycosyltransferase genes whose products catalyzed the formation of different ginsenosides in P. notoginseng. The genetic information obtained in this study provides a resource for further exploration of the growth characteristics, cultivation, breeding, and saponin biosynthesis of P. notoginseng.
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Affiliation(s)
- Zhouqian Jiang
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Lichan Tu
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China
- School of Pharmaceutical Sciences, Capital Medical University, Beijing, China
| | | | - Yifeng Zhang
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China
- School of Pharmaceutical Sciences, Capital Medical University, Beijing, China
| | - Tianyuan Hu
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Baowei Ma
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Yun Lu
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Xiuming Cui
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Jie Gao
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Xiaoyi Wu
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Yuru Tong
- School of Pharmaceutical Sciences, Capital Medical University, Beijing, China
| | - Jiawei Zhou
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Yadi Song
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Yuan Liu
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Nan Liu
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Luqi Huang
- State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
- Corresponding author
| | - Wei Gao
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China
- School of Pharmaceutical Sciences, Capital Medical University, Beijing, China
- Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
- Corresponding author
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12
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Qi Y, Zhou L, Han L, Zou H, Miao K, Wang Y. PsbHLH1, a novel transcription factor involved in regulating anthocyanin biosynthesis in tree peony (Paeonia suffruticosa). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 154:396-408. [PMID: 32645590 DOI: 10.1016/j.plaphy.2020.06.015] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 05/12/2020] [Accepted: 06/09/2020] [Indexed: 06/11/2023]
Abstract
Flower color is one of the most important features of ornamental plants. Anthocyanin composition and concentration are usually closely related to flower color formation. The biosynthesis of anthocyanin is regulated by a series of structural genes and regulatory genes. The basic helix-loop-helix proteins (bHLHs) are considered as one of the key transcription factors known as the regulators of anthocyanin biosynthesis. However, the bHLH transcription factor family of tree peony (Paeonia suffruticosa) has not been systematically studied in previous studies, especially for the regulation of petal pigmentation. The aim of this study was to identify bHLH genes and unravel their underlying molecular mechanism involved in the regulation of anthocyanin biosynthesis in tree peony. Based on transcriptome profiling analysis, we identified three bHLHs candidate anthocyanin regulators, PsbHLH1, PsbHLH2, and PsbHLH3. PsbHLH1-3 were phylogenetically clustered in the IIIf bHLH subgroup, which is involved in anthocyanin biosynthesis in other plant species. In addition, three bHLH proteins were localized in the nucleus and displayed transcriptional activation activity in a yeast hybrid system. Through a series of functional experiments, we further demonstrated that PsbHLH1 could transcriptionally activate the expression of PsDFR and PsANS via directly binding to their promoters. These results laid a solid foundation to better understand the regulatory mechanisms of anthocyanin biosynthesis in P. suffruticosa and to benefit molecular breeding of tree peony cultivars with novel color.
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Affiliation(s)
- Yu Qi
- Key Laboratory of Tree Breeding and Cultivation of National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
| | - Lin Zhou
- Key Laboratory of Tree Breeding and Cultivation of National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
| | - Lulu Han
- Key Laboratory of Tree Breeding and Cultivation of National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
| | - Hongzhu Zou
- Key Laboratory of Tree Breeding and Cultivation of National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
| | - Kun Miao
- Key Laboratory of Tree Breeding and Cultivation of National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
| | - Yan Wang
- Key Laboratory of Tree Breeding and Cultivation of National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China.
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