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Titova MV, Lunkova MK, Tyurina TM, Prudnikova ON, Popova EV, Klychnikov OI, Metalnikov PS, Ikhalaynen YA, Vasileva EN, Rodin IA, Nosov AM. Suspension cell cultures of Panax vietnamensis as a biotechnological source of ginsenosides: growth, cytology, and ginsenoside profile assessment. Front Plant Sci 2024; 15:1349494. [PMID: 38469323 PMCID: PMC10926444 DOI: 10.3389/fpls.2024.1349494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 01/25/2024] [Indexed: 03/13/2024]
Abstract
Introduction Panax vietnamensis is a valuable medicinal plant and a source of a broad spectrum of biologically active ginsenosides of different structural groups. Overexploitation and low adaptability to planation cultivation have made this species vulnerable to human pressure and prompted the development of cell cultivation in vitro as a sustainable alternative to harvesting wild plants for their bioactive components. Despite high interest in biotechnological production, little is known about the main factors affecting cell growth and ginsenoside biosynthesis of this species under in vitro conditions. In this study, the potential of cell cultures of P. vietnamensis as a biotechnological source of ginsenosides was was assessed. Methods Six suspension cell lines that were developed from different sections of a single rhizome through a multi-step culture optimization process and maintained for over 3 years on media with different mineral salt base and varying contents of auxins and cytokinins. These cell lines were evaluated for productivity parameters and cytological characteristics. Ginsenoside profiles were assessed using a combination of the reversed-phase ultra-high-performance liquid chromatography-Orbitrap-tandem mass spectrometry (UHPLC-Orbitrap-MS/MS) and ultra-performance liquid chromatography-time of flight-mass spectrometry (UPLC-TOF-MS). Results All lines demonstrated good growth with a specific growth rate of 0.1-0.2 day-1, economic coefficient of 0.31-0.70, productivity on dry weight (DW) of 0.30-0.83 gDW (L·day)-1, and maximum biomass accumulation varying from 10 to 22 gDW L-1. Ginsenosides of the protopanaxadiol (Rb1, Rb2/Rb3, malonyl-Rb1, and malonyl-Rb2/Rb3), oleanolic acid (R0 and chikusetsusaponin IV), and ocotillol (vinaginsenoside R1) groups and their isomers were identified in cell biomass extracts. Chikusetsusaponin IV was identified in P. vietnamensis cell culture for the first time. Discussion These results suggest that suspension cell cultures of Vietnamese ginseng have a high potential for the biotechnological production of biomass containing ginsenosides, particularly of the oleanolic acid and ocotillol groups.
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Affiliation(s)
- Maria V. Titova
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Moscow, Russia
| | - Maria K. Lunkova
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Moscow, Russia
| | - Tatiana M. Tyurina
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Moscow, Russia
| | - Olga N. Prudnikova
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Moscow, Russia
| | - Elena V. Popova
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Moscow, Russia
| | - Oleg I. Klychnikov
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Moscow, Russia
- Department of Biochemistry, Faculty of Biology, M.V. Lomonosov Moscow State University, Moscow, Russia
| | - Pavel S. Metalnikov
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Moscow, Russia
| | - Yuri A. Ikhalaynen
- Department of Analytical Chemistry, Faculty of Chemistry, M.V. Lomonosov Moscow State University, Moscow, Russia
| | - Elizaveta N. Vasileva
- Department of Analytical Chemistry, Faculty of Chemistry, M.V. Lomonosov Moscow State University, Moscow, Russia
| | - Igor A. Rodin
- Department of Analytical Chemistry, Faculty of Chemistry, M.V. Lomonosov Moscow State University, Moscow, Russia
| | - Alexander M. Nosov
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences, Moscow, Russia
- Department of Plant Physiology, Faculty of Biology, M.V. Lomonosov Moscow State University, Moscow, Russia
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Shim S, Lee HG, Park OS, Shin H, Lee K, Lee H, Huh JH, Seo PJ. Dynamic changes in DNA methylation occur in TE regions and affect cell proliferation during leaf-to-callus transition in Arabidopsis. Epigenetics 2022; 17:41-58. [PMID: 33406971 PMCID: PMC8812807 DOI: 10.1080/15592294.2021.1872927] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 12/07/2020] [Accepted: 12/28/2020] [Indexed: 12/13/2022] Open
Abstract
Plant somatic cells can be reprogrammed into pluripotent cell mass, called callus, through a two-step in vitro tissue culture method. Incubation on callus-inducing medium triggers active cell proliferation to form a pluripotent callus. Notably, DNA methylation is implicated during callus formation, but a detailed molecular process regulated by DNA methylation remains to be fully elucidated. Here, we compared genome-wide DNA methylation profiles between leaf and callus tissues in Arabidopsis using whole-genome bisulphite-sequencing. Global distribution of DNA methylation showed that CHG methylation was increased, whereas CHH methylation was reduced especially around transposable element (TE) regions during the leaf-to-callus transition. We further analysed differentially expressed genes around differentially methylated TEs (DMTEs) during the leaf-to-callus transition and found that genes involved in cell cycle regulation were enriched and also constituted a coexpression gene network along with pluripotency regulators. In addition, a conserved DNA sequence analysis for upstream cis-elements led us to find a putative transcription factor associated with cell fate transition. CIRCADIAN CLOCK-ASSOCIATED 1 (CCA1) was newly identified as a regulator of plant regeneration, and consistently, the cca1lhy mutant displayed altered phenotypes in callus proliferation. Overall, these results suggest that DNA methylation coordinates cell cycle regulation during callus formation, and CCA1 may act as a key upstream coordinator at least in part in the processes.
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Affiliation(s)
- Sangrea Shim
- Department of Chemistry, Seoul National University, Seoul, Korea
- Plant Genomics and Breeding Institute, Seoul National University, Seoul, Korea
| | - Hong Gil Lee
- Department of Chemistry, Seoul National University, Seoul, Korea
- Plant Genomics and Breeding Institute, Seoul National University, Seoul, Korea
| | - Ok-Sun Park
- Research Institute of Basic Sciences, Seoul National University, Seoul, Korea
| | - Hosub Shin
- Department of Agriculture, Forestry and Bioresources, Seoul National University, Seoul, Korea
| | - Kyounghee Lee
- Research Institute of Basic Sciences, Seoul National University, Seoul, Korea
| | - Hongwoo Lee
- Department of Chemistry, Seoul National University, Seoul, Korea
| | - Jin Hoe Huh
- Plant Genomics and Breeding Institute, Seoul National University, Seoul, Korea
- Department of Agriculture, Forestry and Bioresources, Seoul National University, Seoul, Korea
| | - Pil Joon Seo
- Department of Chemistry, Seoul National University, Seoul, Korea
- Plant Genomics and Breeding Institute, Seoul National University, Seoul, Korea
- Research Institute of Basic Sciences, Seoul National University, Seoul, Korea
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Dai X, Wang J, Song Y, Liu Z, Xue T, Qiao M, Yu Y, Xin W, Xiang F. Cytosine methylation of the FWA promoter promotes direct in vitro shoot regeneration in Arabidopsis thaliana. J Integr Plant Biol 2021; 63:1491-1504. [PMID: 34292662 DOI: 10.1111/jipb.13156] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 07/20/2021] [Indexed: 06/13/2023]
Abstract
Epigenetic modifications within promoter sequences can act as regulators of gene expression. Shoot regeneration is influenced by both DNA methylation and histone methylation, but the mechanistic basis of this regulation is obscure. Here, we identified 218 genes related to the regeneration capacity of callus that were differentially transcribed between regenerable calli (RC) and non-regenerable calli (NRC) in Arabidopsis thaliana. An analysis of the promoters of five of the differentially expressed genes (FWA, ACC1, TFL1, MAX3, and GRP3) pointed to an inverse relationship between cytosine methylation and transcription. The FWA promoter was demethylated and highly expressed in NRC, whereas it was methylated and expressed at low levels in RC. Explants of the hypomethylation mutants fwa-1 and fwa-2 showed strong levels of FWA expression and regenerated less readily than the wild type, suggesting that FWA inhibits direct in vitro shoot regeneration. WUSCHEL-RELATED HOMEOBOX 9 (WOX9), which is required for shoot apical meristem formation, was directly repressed by FWA. Overexpressing WOX9 partly rescued the shoot regeneration defect of fwa-2 plants. These findings suggest that cytosine methylation of the FWA promoter forms part of the regulatory system governing callus regenerability and direct in vitro shoot regeneration.
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Affiliation(s)
- Xuehuan Dai
- The Key Laboratory of the Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, Qingdao, 266237, China
| | - Jing Wang
- The Key Laboratory of the Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, Qingdao, 266237, China
| | - Yuguang Song
- The Key Laboratory of the Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, Qingdao, 266237, China
- Present address: Qufu Normal University, Qufu, 273165, China
| | - Zhenhua Liu
- The Key Laboratory of the Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, Qingdao, 266237, China
- Present address: Shandong University of Traditional Chinese Medicine, Jinan, 250355, China
| | - Tao Xue
- The Key Laboratory of the Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, Qingdao, 266237, China
- Present address: Huaibei Normal University, Huaibei, 235000, China
| | - Meng Qiao
- The Key Laboratory of the Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, Qingdao, 266237, China
| | - Yanchong Yu
- The Key Laboratory of the Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, Qingdao, 266237, China
- Present address: Qingdao Agricultural University, Qingdao, 266109, China
| | - Wei Xin
- The Key Laboratory of the Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, Qingdao, 266237, China
- Present address: Institute of Botany, The Chinese Academy of Sciences, Beijing, 100101, China
| | - Fengning Xiang
- The Key Laboratory of the Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Sciences, Shandong University, Qingdao, 266237, China
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Ran L, Li M, Fan HX, Jiang JJ, Wang YP, Sokolov V. Epigenetic variation in the callus of Brassica napus under different inducement conditions. RUSS J GENET+ 2016. [DOI: 10.1134/s1022795416080111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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