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Yue L, Uwaremwe C, Tian Y, Liu Y, Zhao X, Zhou Q, Wang Y, Zhang Y, Liu B, Cui Z, Dun C, Wang R. Bacillus amyloliquefaciens Rescues Glycyrrhizic Acid Loss Under Drought Stress in Glycyrrhiza uralensis by Activating the Jasmonic Acid Pathway. Front Microbiol 2022; 12:798525. [PMID: 35368293 PMCID: PMC8966401 DOI: 10.3389/fmicb.2021.798525] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 12/16/2021] [Indexed: 01/25/2023] Open
Abstract
Drought is a major factor limiting the production of the perennial medicinal plant Glycyrrhiza uralensis Fisch. (Fabaceae) in Northwest China. In this study, 1-year-old potted plants were inoculated with the strain Bacillus amyloliquefaciens FZB42, using a gradient of concentrations (CFU), to test for microbe-induced host tolerance to drought condition treatments in a greenhouse experiment. At the concentration of 108 CFU ml-1, FZB42 had significant growth-promoting effect on G. uralensis: the root biomass was 1.52, 0.84, 0.94, and 0.38 times that under normal watering and mild, moderate, and severe drought stress conditions, respectively. Under moderate drought, the positive impact of FZB42 on G. uralensis growth was most pronounced, with both developing axial and lateral roots strongly associated with indoleacetic acid (IAA) accumulation. An untargeted metabolomic analysis and physiological measurements of mature roots revealed that FZB42 improved the antioxidant system of G. uralensis through the accumulation of proline and sucrose, two osmotic adjustment solutes, and by promoting catalase (CAT) activity under moderate drought stress. Furthermore, significantly higher levels of total flavonoids, liquiritin, and glycyrrhizic acid (GA), the pharmacologically active substances of G. uralensis, were found in the roots of inoculated plants after FZB42 inoculation under all imposed drought conditions. The jasmonic acid (JA) content, which is closely related to plant defense responses and secondary metabolites' production, was greatly increased in roots after the bacterial inoculations, indicating that FZB42 activated the JA pathway. Taken together, our results demonstrate that inoculation with FZB42 alleviates the losses in production and pharmacological metabolites of G. uralensis caused by drought via the JA pathway's activation. These results provide a developed prospect of a microbial agent to improve the yield and quality of medical plants in arid and semi-arid regions.
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Affiliation(s)
- Liang Yue
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions of Gansu Province, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China.,Gansu Gaolan Field Scientific Observation and Research Station for Agricultural Ecosystem, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Constantine Uwaremwe
- University of Chinese Academy of Sciences, Beijing, China.,CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, China
| | - Yuan Tian
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions of Gansu Province, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China.,Gansu Gaolan Field Scientific Observation and Research Station for Agricultural Ecosystem, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Yang Liu
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions of Gansu Province, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China.,Gansu Gaolan Field Scientific Observation and Research Station for Agricultural Ecosystem, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Xia Zhao
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions of Gansu Province, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China.,Gansu Gaolan Field Scientific Observation and Research Station for Agricultural Ecosystem, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Qin Zhou
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions of Gansu Province, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China.,Gansu Gaolan Field Scientific Observation and Research Station for Agricultural Ecosystem, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Yun Wang
- University of Chinese Academy of Sciences, Beijing, China.,Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China
| | - Yubao Zhang
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions of Gansu Province, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China.,Gansu Gaolan Field Scientific Observation and Research Station for Agricultural Ecosystem, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Bailong Liu
- Gansu Institute for Drug Control, Lanzhou, China
| | - Zengtuan Cui
- The General Station of Construction and Protection for The Cultivated Land and Quality of Gansu Province, Lanzhou, China
| | - Chengchao Dun
- School of Management, Lanzhou University, Lanzhou, China
| | - Ruoyu Wang
- Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions of Gansu Province, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China.,Gansu Gaolan Field Scientific Observation and Research Station for Agricultural Ecosystem, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, China.,University of Chinese Academy of Sciences, Beijing, China
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2
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Chamkhi I, Benali T, Aanniz T, El Menyiy N, Guaouguaou FE, El Omari N, El-Shazly M, Zengin G, Bouyahya A. Plant-microbial interaction: The mechanism and the application of microbial elicitor induced secondary metabolites biosynthesis in medicinal plants. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 167:269-295. [PMID: 34391201 DOI: 10.1016/j.plaphy.2021.08.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 07/26/2021] [Accepted: 08/02/2021] [Indexed: 06/13/2023]
Abstract
Plants and microbes interact with each other via different chemical signaling pathways. At the risophere level, the microbes can secrete molecules, called elicitors, which act on their receptors located in plant cells. The so-called elicitor molecules as well as their actions differ according to the mcirobes and induce different bilogical responses in plants such as the synthesis of secondary metabolites. Microbial compounds induced phenotype changes in plants are known as elicitors and signaling pathways which integrate elicitor's signals in plants are called elicitation. In this review, the impact of microbial elicitors on the synthesis and the secretion of secondary metabolites in plants was highlighted. Moreover, biological properties of these bioactive compounds were also highlighted and discussed. Indeed, several bacteria, fungi, and viruses release elicitors which bind to plant cell receptors and mediate signaling pathways involved in secondary metabolites synthesis. Different phytochemical classes such as terpenoids, phenolic acids and flavonoids were synthesized and/or increased in medicinal plants via the action of microbial elicitors. Moreover, these compounds compounds exhibit numerous biological activities and can therefore be explored in drugs discovery.
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Affiliation(s)
- Imane Chamkhi
- Centre GEOPAC, Laboratoire de Geobiodiversite et Patrimoine Naturel, Université Mohammed V de, Institut Scientifique Rabat, Maroc; University Mohammed VI Polytechnic, Agrobiosciences Program, Lot 660, Hay Moulay Rachid, Benguerir, Morocco.
| | - Taoufiq Benali
- Environment and Health Team, Polydisciplinary Faculty of Safi, Cadi Ayyad University, Safi, Morocco
| | - Tarik Aanniz
- Medical Biotechnology Laboratory (MedBiotech), Rabat Medical & Pharmacy School, Mohammed V University in Rabat, 6203 Rabat, Morocco
| | - Naoual El Menyiy
- Department of Biology, Faculty of Science, University Sidi Mohamed Ben Abdellah, Fez, Morocco
| | - Fatima-Ezzahrae Guaouguaou
- Mohammed V University in Rabat, LPCMIO, Materials Science Center (MSC), Ecole Normale Supérieure, Rabat, Morocco
| | - Nasreddine El Omari
- Laboratory of Histology, Embryology, and Cytogenetic, Faculty of Medicine and Pharmacy, Mohammed V University in Rabat, Morocco
| | - Mohamed El-Shazly
- Department of Pharmacognosy, Faculty of Pharmacy, Ain-Shams University, Cairo, 11566, Egypt; Department of Pharmaceutical Biology, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo, 11835, Egypt
| | - Gokhan Zengin
- Physiology and Biochemistry Research Laboratory, Department of Biology, Science Faculty, Selcuk University, Konya, Turkey.
| | - Abdelhakim Bouyahya
- Laboratory of Human Pathologies Biology, Department of Biology, Faculty of Sciences, and Genomic Center of Human Pathologies, Faculty of Medicine and Pharmacy, Mohammed V University in Rabat, Morocco.
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Hu HF, Zhou HY, Wang XL, Wang YS, Xue YP, Zheng YG. Enhanced ( R)-2-(4-Hydroxyphenoxy)Propionic Acid Production by Beauveria bassiana: Optimization of Culture Medium and H 2O 2 Supplement Under Static Cultivation. J Microbiol Biotechnol 2020; 30:1252-1260. [PMID: 32522969 PMCID: PMC9728401 DOI: 10.4014/jmb.2002.02046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 05/18/2020] [Indexed: 12/15/2022]
Abstract
(R)-2-(4-hydroxyphenoxy)propionic acid (HPOPA) is a key intermediate for the preparation of aryloxyphenoxypropionic acid herbicides (R-isomer). In order to improve the HPOPA production from the substrate (R)-2-phenoxypropionic acid (POPA) with Beauveria bassiana CCN-A7, static cultivation and H2O2 addition were attempted and found to be conducive to the task at hand. This is the first report on HPOPA production under static cultivation and reactive oxygen species (ROS) induction. On this premise, the cultivation conditions and fermentation medium compositions were optimized. As a result, the optimal carbon source, organic nitrogen source, and inorganic nitrogen source were determined to be glucose, peptone, and ammonium sulfate, respectively. The optimal inoculum size and fermentation temperature were 13.3% and 28°C, respectively. The significant factors including glucose, peptone, and H2O2, identified based on Plackett-Burman design, were further optimized through Central Composite Design (CCD). The optimal concentrations/amounts were as follows: glucose 38.81 g/l, peptone 7.28 g/l, and H2O2 1.08 ml/100 ml. Under the optimized conditions, HPOPA titer was improved from 9.60 g/l to 19.53 g/l, representing an increase of 2.03- fold. The results obtained in this work will provide novel strategies for improving the biosynthesis of hydroxy aromatics.
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Affiliation(s)
- Hai-Feng Hu
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, P.R. China,Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou 310014, P.R. China,The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Hai-Yan Zhou
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, P.R. China,Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou 310014, P.R. China,The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Xian-Lin Wang
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, P.R. China,Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou 310014, P.R. China,The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Yuan-Shan Wang
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, P.R. China,Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou 310014, P.R. China,The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou 310014, P.R. China
| | - Ya-Ping Xue
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, P.R. China,Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou 310014, P.R. China,The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou 310014, P.R. China,Corresponding author Phone/Fax: +86-571-88320614 E-mail:
| | - Yu-Guo Zheng
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, P.R. China,Engineering Research Center of Bioconversion and Biopurification of Ministry of Education, Zhejiang University of Technology, Hangzhou 310014, P.R. China,The National and Local Joint Engineering Research Center for Biomanufacturing of Chiral Chemicals, Zhejiang University of Technology, Hangzhou 310014, P.R. China
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Song X, Zhao Y, Han B, Li T, Zhao P, Xu JW, Yu X. Strigolactone mediates jasmonic acid-induced lipid production in microalga Monoraphidium sp. QLY-1 under nitrogen deficiency conditions. BIORESOURCE TECHNOLOGY 2020; 306:123107. [PMID: 32172089 DOI: 10.1016/j.biortech.2020.123107] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 02/26/2020] [Accepted: 02/27/2020] [Indexed: 06/10/2023]
Abstract
The roles of jasmonic acid (JA) in the regulation of cell growth and lipid biosynthesis under the combination of strigolactone (SL) treatment and nitrogen deficiency (ND) were investigated. In this work, the optimised ND condition (46.18%) and ND combined with SL treatment (53.71%) showed 1.11- and 1.29-fold increases in lipid content in Monoraphidium sp. QLY-1 compared with the control condition (41.57%). The levels of JA, glutathione (GSH), and γ-aminobutyric acid (GABA) and lipogenic genes expression were upregulated by the combination of SL and ND, but the ROS level was decreased. Furthermore, exogenous JA supplementation induced the highest lipid content (57.12%) and productivity (312.35 mg L-1 d-1) under ND combined with SL treatment. This study provided a combined strategy for enhancing lipid production and supplied novel insights into the role of JA signalling in regulating lipid synthesis and oxidative stress in microalgae by combining SL treatment with ND.
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Affiliation(s)
- Xueting Song
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Yongteng Zhao
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Benyong Han
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Tao Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Peng Zhao
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Jun-Wei Xu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Xuya Yu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China.
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Identification of rate-limiting enzymes involved in paclitaxel biosynthesis pathway affected by coronatine and methyl-β-cyclodextrin in Taxus baccata L. cell suspension cultures. ACTA ACUST UNITED AC 2018; 26:129-142. [PMID: 30377988 PMCID: PMC6279667 DOI: 10.1007/s40199-018-0217-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 09/11/2018] [Indexed: 11/20/2022]
Abstract
Background Paclitaxel is a potent antitumor alkaloid widely used for the treatment of several cancer types. This valuable secondary metabolite naturally exists in the inner bark of Taxus species in very low amounts. The small-scale production of paclitaxel in Taxus cell cultures requires utilization of several elicitors. Objective The main objective of this work was to identify key genes that encode rate-limiting enzymes in paclitaxel biosynthesis pathway by investigating the possible relationship between paclitaxel production and a set of 13 involved genes’ relative expression in Taxus baccata L. cell suspension cultures affected by coronatine and methyl-β-cyclodextrin. Methods In the present research, the most important key genes were identified using gene expression profiling evaluation and paclitaxel production assessment in Taxus baccata L. cell cultures affected by mentioned elicitors. Results and Conclusion Gene expression levels were variably increased using methyl-β-cyclodextrin, and in some cases, a synergistic effect on transcript accumulation was observed when culture medium was supplemented with both elicitors. It was revealed that DBAT, BAPT, and DBTNBT are the most important rate-limiting enzymes in paclitaxel biosynthesis pathway in Taxus baccata L. cell suspension cultures under coronatine and methyl-β-cyclodextrin elicitation condition. Moreover, PAM was identified as one of the important key genes especially in the absence of β-phenylalanine. In cell cultures affected by these elicitors, paclitaxel was found largely in the culture media (more than 90%). The secretion of this secondary metabolite suggests a limited feedback inhibition and reduced paclitaxel toxicity for producer cells. It is the result of the ABC gene relative expression level increment under methyl-β-cyclodextrin elicitation and highly depends on methyl-β-cyclodextrin’s special property (complex formation with hydrophobic compounds). Paclitaxel biosynthesis was obviously increased due to the effect of coronatine and methyl-β-cyclodextrin elicitation, leading to the production level of 5.62 times higher than that of the untreated cultures. Rate Limiting Enzymes in Paclitaxel Biosynthesis Pathway: DBAT, BAPT, DBTNBT and PAM. ![]()
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Li J, Liu S, Wang J, Li J, Li J, Gao W. Gene expression of glycyrrhizin acid and accumulation of endogenous signaling molecule inGlycyrrhiza uralensisFisch adventitious roots afterSaccharomyces cerevisiaeandMeyerozyma guilliermondiiapplications. Biotechnol Appl Biochem 2017; 64:700-711. [DOI: 10.1002/bab.1534] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Revised: 07/15/2016] [Accepted: 07/24/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Jianli Li
- Key Laboratory of Industrial Fermentation Microbiology; Ministry of Education; Tianjin University of Science and Technology; Tianjin People's Republic of China
| | - Shujie Liu
- Key Laboratory of Industrial Fermentation Microbiology; Ministry of Education; Tianjin University of Science and Technology; Tianjin People's Republic of China
| | - Juan Wang
- Tianjin Key Laboratory for Modern Drug Delivery and High Efficiency; School of Pharmaceutical Science and Technology; Tianjin University; Tianjin People's Republic of China
| | - Jing Li
- Tianjin Key Laboratory for Modern Drug Delivery and High Efficiency; School of Pharmaceutical Science and Technology; Tianjin University; Tianjin People's Republic of China
| | - Jinxin Li
- Tianjin Key Laboratory for Modern Drug Delivery and High Efficiency; School of Pharmaceutical Science and Technology; Tianjin University; Tianjin People's Republic of China
| | - Wenyuan Gao
- Tianjin Key Laboratory for Modern Drug Delivery and High Efficiency; School of Pharmaceutical Science and Technology; Tianjin University; Tianjin People's Republic of China
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Wang J, Xiao H, Qian ZG, Zhong JJ. Bioproduction of Antibody–Drug Conjugate Payload Precursors by Engineered Cell Factories. Trends Biotechnol 2017; 35:466-478. [DOI: 10.1016/j.tibtech.2017.03.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 02/25/2017] [Accepted: 03/01/2017] [Indexed: 12/30/2022]
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Vaccaro MC, Alfieri M, Malafronte N, De Tommasi N, Leone A. Increasing the synthesis of bioactive abietane diterpenes in Salvia sclarea hairy roots by elicited transcriptional reprogramming. PLANT CELL REPORTS 2017; 36:375-386. [PMID: 27853836 DOI: 10.1007/s00299-016-2076-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 11/08/2016] [Indexed: 05/18/2023]
Abstract
Transcriptional activation of genes belonging to the plastidial MEP-derived isoprenoid pathway by elicitation with methyl jasmonate and coronatine enhanced the content of bioactive abietane diterpenes in Salvia sclarea hairy roots. We have shown that aethiopinone, an abietane diterpene synthesized in Salvia sclarea roots is cytotoxic and induces apoptosis in human melanoma cells. To develop a production platform for this compound and other abietane diterpenes, hairy root technology was combined with the elicitation of methyl jasmonate (MeJA) or the phytotoxin coronatine (Cor). Both MeJA and Cor induced a significant accumulation of aethiopinone, but prolonged exposure to MeJA irremediably caused inhibition of hairy root growth, which was unaffected by Cor treatment. Considering together the fold increase in aethiopinone content and the final hairy root biomass, the best combination was a Cor treatment for 28 days, which allowed to obtain up to 105.34 ± 2.30 mg L-1 of this compound to be obtained, corresponding to a 24-fold increase above the basal content in untreated hairy roots. MeJA or Cor elicitation also enhanced the synthesis of other bioactive abietane-quinone diterpenes. The elicitor-dependent steering effect was due to a coordinated transcriptional activation of several biosynthetic genes belonging to the plastidial MEP-derived isoprenoid pathway. High correlations between aethiopinone content and MeJA or Cor-elicited level of gene transcripts were found for DXS2 (r 2 = 0.99), DXR (r 2 = 0.99), and GGPPS (r 2 = 0.98), encoding enzymes acting upstream of GGPP, the common precursor of diterpenes and other plastidial-derived terpenes, as well as CPPS (r 2 = 0.99), encoding the enzyme involved in the first cyclization steps leading to copalyl-diphosphate, the precursor of abietane-like diterpenes. These results point to these genes as possible targets of metabolic engineering approaches to establish a more efficient production platform for such promising anti-proliferative plant-derived compounds.
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Affiliation(s)
- M C Vaccaro
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II 134D, 80084, Fisciano, Italy
| | - M Alfieri
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II 134D, 80084, Fisciano, Italy
| | - N Malafronte
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II 134D, 80084, Fisciano, Italy
| | - N De Tommasi
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II 134D, 80084, Fisciano, Italy
| | - A Leone
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II 134D, 80084, Fisciano, Italy.
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Xia Y, Zhou X, Wang G, Zhang B, Xu G, Ai L. Induction of antroquinonol production by addition of hydrogen peroxide in the fermentation of Antrodia camphorata S-29. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2017; 97:595-599. [PMID: 27098319 DOI: 10.1002/jsfa.7770] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 02/17/2016] [Accepted: 04/11/2016] [Indexed: 06/05/2023]
Abstract
BACKGROUND Antroquinonol have significantly anti-tumour effects on various cancer cells. There is still lack of reports on regulation of environmental factors on antroquinonol production by Antrodia camphorata. RESULTS An effective submerged fermentation method was employed to induce antroquinonol with adding H2 O2 . The production of antroquinonol was 57.81 mg L-1 after fermentation for 10 days when adding 25 mmol L-1 H2 O2 at day 4 of the fermentation process. Then, antroquinonol was further increased to 80.10 mg L-1 with cell productivity of 14.94 mg g-1 dry mycelium when the feeding rate of H2 O2 was adjusted to 0.2 mmol L-1 h-1 in the 7 L fermentation bioreactor. After inhibiting the generation of reactive oxygen species with the inhibitor diphenyleneiodoium, the synthesis of antroquinonol from A. camphorata was significantly reduced, and the yield was only 3.3 mg L-1 . CONCLUSION The results demonstrated that addition of H2 O2 was a very effective strategy to induce and regulate the synthesis of antroquinonol in submerged fermentation. Reactive oxygen species generated by H2 O2 during fermentation caused oxidative stress, which induced the synthesis of antroquinonol and other chemical compounds. Moreover, it is very beneficial process to improve production and diversity of the active compounds during liquid fermentation of A. camphorata mycelium. © 2016 Society of Chemical Industry.
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Affiliation(s)
- Yongjun Xia
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Xuan Zhou
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Guangqiang Wang
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Bobo Zhang
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Ganrong Xu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, China
| | - Lianzhong Ai
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China
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Zhai X, Jia M, Chen L, Zheng CJ, Rahman K, Han T, Qin LP. The regulatory mechanism of fungal elicitor-induced secondary metabolite biosynthesis in medical plants. Crit Rev Microbiol 2016; 43:238-261. [PMID: 27936989 DOI: 10.1080/1040841x.2016.1201041] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
A wide range of external stress stimuli trigger plant cells to undergo complex network of reactions that ultimately lead to the synthesis and accumulation of secondary metabolites. Accumulation of such metabolites often occurs in plants subjected to stresses including various elicitors or signal molecules. Throughout evolution, endophytic fungi, an important constituent in the environment of medicinal plants, have known to form long-term stable and mutually beneficial symbiosis with medicinal plants. The endophytic fungal elicitor can rapidly and specifically induce the expression of specific genes in medicinal plants which can result in the activation of a series of specific secondary metabolic pathways resulting in the significant accumulation of active ingredients. Here we summarize the progress made on the mechanisms of fungal elicitor including elicitor signal recognition, signal transduction, gene expression and activation of the key enzymes and its application. This review provides guidance on studies which may be conducted to promote the efficient synthesis and accumulation of active ingredients by the endogenous fungal elicitor in medicinal plant cells, and provides new ideas and methods of studying the regulation of secondary metabolism in medicinal plants.
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Affiliation(s)
- Xin Zhai
- a Department of Pharmacognosy, School of Pharmacy , Second Military Medical University , Shanghai , China
| | - Min Jia
- a Department of Pharmacognosy, School of Pharmacy , Second Military Medical University , Shanghai , China
| | - Ling Chen
- a Department of Pharmacognosy, School of Pharmacy , Second Military Medical University , Shanghai , China
| | - Cheng-Jian Zheng
- a Department of Pharmacognosy, School of Pharmacy , Second Military Medical University , Shanghai , China
| | - Khalid Rahman
- b Department of Physiological Biochemistry, Faculty of Science, School of Pharmacy and Biomolecular Sciences , Liverpool John Moores University , Liverpool , UK
| | - Ting Han
- a Department of Pharmacognosy, School of Pharmacy , Second Military Medical University , Shanghai , China
| | - Lu-Ping Qin
- a Department of Pharmacognosy, School of Pharmacy , Second Military Medical University , Shanghai , China
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Liu W, Wang H, Chen Y, Zhu S, Chen M, Lan X, Chen G, Liao Z. Cold stress improves the production of artemisinin depending on the increase in endogenous jasmonate. Biotechnol Appl Biochem 2016; 64:305-314. [DOI: 10.1002/bab.1493] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 03/04/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Wanhong Liu
- Key Laboratory of Biorheological Science and Technology (Ministry of Education) College of Bioengineering; Chongqing University; Chongqing People's Republic of China
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education); SWU-TAAHC Medicinal Plant Joint R&D Centre; School of Life Sciences; Southwest University; Chongqing People's Republic of China
- School of Chemistry and Chemical Engineering; Chongqing University of Science and Technology; Chongqing People's Republic of China
| | - Huanyan Wang
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education); SWU-TAAHC Medicinal Plant Joint R&D Centre; School of Life Sciences; Southwest University; Chongqing People's Republic of China
| | - Yupei Chen
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education); SWU-TAAHC Medicinal Plant Joint R&D Centre; School of Life Sciences; Southwest University; Chongqing People's Republic of China
| | - Shunqin Zhu
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education); SWU-TAAHC Medicinal Plant Joint R&D Centre; School of Life Sciences; Southwest University; Chongqing People's Republic of China
| | - Min Chen
- SWU-TAAHC Medicinal Plant Joint R&D Centre; College of Pharmaceutical Sciences; Southwest University; Chongqing People's Republic of China
| | - Xiaozhong Lan
- TAAHC-SWU Medicinal Plant Joint R&D Centre; Agricultural and Animal Husbandry College; Tibet University; Nyingchi of Tibe People's Republic of China
| | - Guoping Chen
- Key Laboratory of Biorheological Science and Technology (Ministry of Education) College of Bioengineering; Chongqing University; Chongqing People's Republic of China
| | - Zhihua Liao
- Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education); SWU-TAAHC Medicinal Plant Joint R&D Centre; School of Life Sciences; Southwest University; Chongqing People's Republic of China
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12
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Feng J, Jiang J, Liu Y, Li W, Azat R, Zheng X, Zhou WW. Significance of oxygen carriers and role of liquid paraffin in improving validamycin A production. ACTA ACUST UNITED AC 2016; 43:1365-72. [DOI: 10.1007/s10295-016-1822-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 07/30/2016] [Indexed: 11/28/2022]
Abstract
Abstract
Validamycin A (Val-A) synthesized by Streptomyces hygroscopicus 5008 is widely used as a high-efficient antibiotic to protect plants from sheath blight disease. A novel fermentation strategy was introduced to stimulate Val-A production by adding oxygen carriers. About 58 % increase in Val-A production was achieved using liquid paraffin. Further, biomass, carbon source, metabolic genes, and metabolic enzymes were studied. It was also found that the supplementation of liquid paraffin increased the medium dissolved oxygen and intracellular oxidative stress level. The expression of the global regulators afsR and soxR sensitive to ROS, ugp catalyzing synthesis of Val-A precursor, and Val-A structural genes was enhanced. The change of the activities of glucose-6-phosphate dehydrogenase and glyceraldehyde 3-phosphate dehydrogenase was observed, which reflected the redirection of carbon metabolic flux. Based on these results, liquid paraffin addition as an oxygen carrier could be a useful technique in industrial production of Val-A and our study revealed a redox-based secondary metabolic regulation in S. hygroscopicus 5008, which provided a new insight into the regulation of the biosynthesis of secondary metabolites.
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Affiliation(s)
- Jinsong Feng
- grid.13402.34 000000041759700X College of Biosystems Engineering and Food Science, Fuli Institute of Food Science, Zhejiang Key Laboratory for Agro-Food Processing Zhejiang University 310058 Hangzhou Zhejiang China
| | - Jing Jiang
- grid.13402.34 000000041759700X College of Biosystems Engineering and Food Science, Fuli Institute of Food Science, Zhejiang Key Laboratory for Agro-Food Processing Zhejiang University 310058 Hangzhou Zhejiang China
| | - Yan Liu
- grid.13402.34 000000041759700X College of Biosystems Engineering and Food Science, Fuli Institute of Food Science, Zhejiang Key Laboratory for Agro-Food Processing Zhejiang University 310058 Hangzhou Zhejiang China
| | - Wei Li
- grid.13402.34 000000041759700X College of Biosystems Engineering and Food Science, Fuli Institute of Food Science, Zhejiang Key Laboratory for Agro-Food Processing Zhejiang University 310058 Hangzhou Zhejiang China
| | - Ramila Azat
- grid.13402.34 000000041759700X College of Biosystems Engineering and Food Science, Fuli Institute of Food Science, Zhejiang Key Laboratory for Agro-Food Processing Zhejiang University 310058 Hangzhou Zhejiang China
| | - Xiaodong Zheng
- grid.13402.34 000000041759700X College of Biosystems Engineering and Food Science, Fuli Institute of Food Science, Zhejiang Key Laboratory for Agro-Food Processing Zhejiang University 310058 Hangzhou Zhejiang China
| | - Wen-Wen Zhou
- grid.13402.34 000000041759700X College of Biosystems Engineering and Food Science, Fuli Institute of Food Science, Zhejiang Key Laboratory for Agro-Food Processing Zhejiang University 310058 Hangzhou Zhejiang China
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13
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Khojasteh A, Mirjalili MH, Palazon J, Eibl R, Cusido RM. Methyl jasmonate enhanced production of rosmarinic acid in cell cultures ofSatureja khuzistanicain a bioreactor. Eng Life Sci 2016. [DOI: 10.1002/elsc.201600064] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Affiliation(s)
- Abbas Khojasteh
- Laboratorio de Fisiologia Vegetal, Facultat de Farmacia; Universitat de Barcelona; Barcelona Spain
- Biotechnological Engineering and Cell Cultivation Techniques, Institute of Biotechnology, Campus Grüental; Zurich University of Applied Sciences; Wädenswill Switzerland
| | - Mohammad Hossein Mirjalili
- Department of Agriculture, Medicinal Plants and Drugs Research Institute; Shahid Beheshti University; G.C., Evin Tehran Iran
| | - Javier Palazon
- Laboratorio de Fisiologia Vegetal, Facultat de Farmacia; Universitat de Barcelona; Barcelona Spain
| | - Regine Eibl
- Biotechnological Engineering and Cell Cultivation Techniques, Institute of Biotechnology, Campus Grüental; Zurich University of Applied Sciences; Wädenswill Switzerland
| | - Rosa M. Cusido
- Laboratorio de Fisiologia Vegetal, Facultat de Farmacia; Universitat de Barcelona; Barcelona Spain
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14
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Stimulatory effect of ethanol on libertellenone H biosynthesis by Arctic fungus Eutypella sp. D-1. Bioprocess Biosyst Eng 2015; 39:353-60. [DOI: 10.1007/s00449-015-1515-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 11/24/2015] [Indexed: 11/25/2022]
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15
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Tang B, Zhang D, Li S, Xu Z, Feng X, Xu H. Enhanced poly(γ-glutamic acid) production by H 2 O 2 -induced reactive oxygen species in the fermentation of Bacillus subtilis NX-2. Biotechnol Appl Biochem 2015. [PMID: 26202728 DOI: 10.1002/bab.1416] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Effects of reactive oxygen species (ROS) on cell growth and poly(γ-glutamic acid) (γ-PGA) synthesis were studied by adding hydrogen peroxide to a medium of Bacillus subtilis NX-2. After optimizing the addition concentration and time of H2 O2 , a maximum concentration of 33.9 g/L γ-PGA was obtained by adding 100 µM H2 O2 to the medium after 24 H. This concentration was 20.6% higher than that of the control. The addition of diphenyleneiodonium chloride (ROS inhibitor) can interdict the effect of H2 O2 -induced ROS. Transcriptional levels of the cofactors and relevant genes were also determined under ROS stress to illustrate the possible metabolic mechanism contributing to the improve γ-PGA production. The transcriptional levels of genes belonging to the tricarboxylic acid cycle and electron transfer chain system were significantly increased by ROS, which decreased the NADH/NAD+ ratio and increased the ATP levels, thereby providing more reducing power and energy for γ-PGA biosynthesis. The enhanced γ-PGA synthetic genes also directly promoted the formation of γ-PGA. This study was the first to use the ROS control strategy for γ-PGA fermentation and provided valuable information on the possible mechanism by which ROS regulated γ-PGA biosynthesis in B. subtilis NX-2.
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Affiliation(s)
- Bao Tang
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, People's Republic of China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, People's Republic of China
| | - Dan Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, People's Republic of China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, People's Republic of China
| | - Sha Li
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, People's Republic of China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, People's Republic of China
| | - Zongqi Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, People's Republic of China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, People's Republic of China
| | - Xiaohai Feng
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, People's Republic of China.
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, People's Republic of China.
| | - Hong Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, People's Republic of China.
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, People's Republic of China.
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16
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Ramirez-Estrada K, Osuna L, Moyano E, Bonfill M, Tapia N, Cusido RM, Palazon J. Changes in gene transcription and taxane production in elicited cell cultures of Taxus × media and Taxus globosa. PHYTOCHEMISTRY 2015; 117:174-184. [PMID: 26091963 DOI: 10.1016/j.phytochem.2015.06.013] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Revised: 06/04/2015] [Accepted: 06/08/2015] [Indexed: 05/27/2023]
Abstract
The response of two Taxus cell systems to the action of cyclodextrin (CD) and coronatine (CORO), supplied to the culture medium either separately or together, was studied. Two-stage Taxus globosa and Taxus media cell cultures were established and the elicitors were added at the beginning of the second stage. Growth, taxane production, and the expression of known taxol biosynthetic genes, including the recently characterized CoA ligase gene, were studied. Although CORO reduced the growth capacity of both cell lines, CD apparently counteracted this negative effect. Taxane production was significantly enhanced by the simultaneous addition of CD and CORO to the medium. The total taxane production in the T. media cell line was more than double that of T. globosa, but in the latter more than 90% of the taxanes produced were excreted to the medium. Individual taxane patterns also differed: at the height of production, the main taxanes in T. globosa cultures were cephalomannine and 10-deacetyltaxol, and in T. media, taxol and baccatin III. The low transcript levels of taxane biosynthetic genes found in T. globosa cells mirrored the lower taxane production in these cultures, while a high expression was strongly correlated with a high taxane production in T. media.
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Affiliation(s)
- Karla Ramirez-Estrada
- Laboratori de Fisiologia Vegetal, Facultat de Farmacia, Universitat de Barcelona, Barcelona, Spain
| | - Lidia Osuna
- Centro de Investigación Biomédica del Sur, Instituto Mexicano del Seguro Social, Morelos, Mexico
| | - Elisabeth Moyano
- Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra, Barcelona, Spain
| | - Mercedes Bonfill
- Laboratori de Fisiologia Vegetal, Facultat de Farmacia, Universitat de Barcelona, Barcelona, Spain
| | - Nadia Tapia
- Centro de Investigación Biomédica del Sur, Instituto Mexicano del Seguro Social, Morelos, Mexico
| | - Rosa M Cusido
- Laboratori de Fisiologia Vegetal, Facultat de Farmacia, Universitat de Barcelona, Barcelona, Spain
| | - Javier Palazon
- Laboratori de Fisiologia Vegetal, Facultat de Farmacia, Universitat de Barcelona, Barcelona, Spain.
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17
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A rational approach to improving the biotechnological production of taxanes in plant cell cultures of Taxus spp. Biotechnol Adv 2014; 32:1157-67. [DOI: 10.1016/j.biotechadv.2014.03.002] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Revised: 03/05/2014] [Accepted: 03/05/2014] [Indexed: 12/24/2022]
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18
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Xu YN, Xia XX, Zhong JJ. Induction of ganoderic acid biosynthesis by Mn2+ in static liquid cultivation of Ganoderma lucidum. Biotechnol Bioeng 2014; 111:2358-65. [PMID: 24870062 DOI: 10.1002/bit.25288] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 05/05/2014] [Accepted: 05/06/2014] [Indexed: 11/07/2022]
Abstract
Metal ions affect cell physiology and metabolism significantly, but the role of Mn(2+) in the secondary metabolism of mushrooms is yet unclear. In static liquid cultivation of Ganoderma lucidum for producing antitumor ganoderic acids (GAs), the Mn(2+) addition was performed. Addition of 10 mM Mn(2+) at the start of the static liquid cultivation resulted in 2.2-fold improvement of total GAs production. The expression levels of GA biosynthetic and Ca(2+) sensors' genes were up-regulated with Mn(2+) induction while down-regulated by adding cyclosporin A (calcineurin inhibitor), suggesting that higher GA production might result from calcineurin signal regulation. Intracellular Ca(2+) imaging and calcineurin inhibitor study revealed that addition of Mn(2+) led to Ca(2+) influx from medium to the cells to trigger calcineurin signals. Mn(2+) addition was therefore an efficient induction strategy for improving GAs production, whose regulation mechanism was via calcineurin signaling transduction.
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Affiliation(s)
- Yi-Ning Xu
- State Key Laboratory of Microbial Metabolism and Laboratory of Molecular Biochemical Engineering, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, 800 Dong-Chuan Road, Shanghai, 200240, China
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19
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20
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Hosting the plant cells in vitro: recent trends in bioreactors. Appl Microbiol Biotechnol 2013; 97:3787-800. [PMID: 23504061 DOI: 10.1007/s00253-013-4817-x] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2013] [Revised: 02/24/2013] [Accepted: 02/26/2013] [Indexed: 10/27/2022]
Abstract
Biotechnological production of high-value metabolites and therapeutic proteins by plant in vitro systems has been considered as an attractive alternative of classical technologies. Numerous proof-of-concept studies have illustrated the feasibility of scaling up plant in vitro system-based processes while keeping their biosynthetic potential. Moreover, several commercial processes have been established so far. Though the progress on the field is still limited, in the recent years several bioreactor configurations has been developed (e.g., so-called single-use bioreactors) and successfully adapted for growing plant cells in vitro. This review highlights recent progress and limitations in the bioreactors for plant cells and outlines future perspectives for wider industrialization of plant in vitro systems as "green cell factories" for sustainable production of value-added molecules.
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21
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Onrubia M, Moyano E, Bonfill M, Cusidó RM, Goossens A, Palazón J. Coronatine, a more powerful elicitor for inducing taxane biosynthesis in Taxus media cell cultures than methyl jasmonate. JOURNAL OF PLANT PHYSIOLOGY 2013; 170:211-9. [PMID: 23102875 DOI: 10.1016/j.jplph.2012.09.004] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Revised: 09/18/2012] [Accepted: 09/19/2012] [Indexed: 05/10/2023]
Abstract
Coronatine is a toxin produced by the pathogen Pseudomonas syringae. This compound has received much attention recently for its potential to act as a plant growth regulator and elicitor of plant secondary metabolism. To gain more insight into the mechanism by which elicitors can affect the biosynthesis of paclitaxel (Px) and related taxanes, the effect of coronatine (Cor) and methyl jasmonate (MeJA) on Taxus media cell cultures has been studied. For this study, a two-stage cell culture was established, in which cells were first cultured for 14 days in a medium optimised for growth, after which the cells were transferred to medium optimised for secondary metabolite production. The two elicitors were added to the medium at the beginning of the second stage. Total taxane production in the cell suspension was significantly enhanced by both elicitors, increasing from a maximum level of 8.14mg/L in control conditions to 21.48mg/L (day 12) with MeJA and 77.46mg/L (day 16) with Cor. Expression analysis indicated that the txs, t13oh, t2oh, t7oh, dbat, pam, bata and dbtnbt genes were variably induced by the presence of the elicitors. Genes encoding enzymes involved in the formation of the polihydroxylated hypothetical intermediate (TXS, T13OH, T2OH, T7OH) and the phenylalanoil CoA chain (PAM) were stronger induced than those encoding enzymes catalysing the last steps of the Px biosynthetic pathway (DBAT, BAPT and DBTNBT). Notably, although taxane accumulation differed qualitatively and quantitatively following MeJA- or Cor-elicitation, gene expression induction patterns were similar, inferring that both elicitors may involve distinct but yet uncharacterised regulatory mechanisms.
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Affiliation(s)
- Miriam Onrubia
- Departament de Ciències Experimentals i de Salut, Universitat Pompeu Fabra, E-08003 Barcelona, Spain
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22
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Iori V, Pietrini F, Zacchini M. Assessment of ibuprofen tolerance and removal capability in Populus nigra L. by in vitro culture. JOURNAL OF HAZARDOUS MATERIALS 2012; 229-230:217-223. [PMID: 22721836 DOI: 10.1016/j.jhazmat.2012.05.097] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Revised: 05/11/2012] [Accepted: 05/28/2012] [Indexed: 06/01/2023]
Abstract
Release of pharmaceuticals in the environment has been emerging as a great concern for ecosystem and human health. Ibuprofen (IBU) represents one of the most widespread pharmaceuticals in surface waters and sediments in spite of the high removal rates occurring in conventional wastewater technologies. To assess the potentiality of phytoremediation in assisting these technologies, the screening of plant species for tolerance and removal ability of pollutants is a very important issue. In this study, the effects of different IBU concentrations on callus cultures of Populus nigra L., a pioneer tree species in the riparian ecosystem, were investigated. Results evidenced a notable tolerance of poplar cells to IBU, especially at high concentrations (IBU 30 mg L(-1)), which even stimulated growth. At this concentration, the ability to withstand IBU was accompanied by inhibition of lipoxygenase (LOX) activity, reduction of lipid peroxide content and increase of membrane redox activity. Irrespective of initial IBU concentrations, a complete removal of this compound from the growth medium by poplar cells during a subculture occurred. Antioxidative enzyme activities and polyamine content were stimulated by IBU 0.03 mg L(-1), while no effect was found in cells exposed to IBU 30 mg L(-1), except for a decrease of guaiacol peroxidase (GPX) activity. These findings put in evidence a notable potential of this plant species for the phytoremediation of IBU-contaminated substrates.
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Affiliation(s)
- Valentina Iori
- Institute of Agro-environmental and Forest Biology, CNR - National Research Council of Italy, Via Salaria Km. 29,300, 00015 Monterotondo Scalo, Roma, Italy
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23
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Fu C, Li L, Wu W, Li M, Yu X, Yu L. Assessment of genetic and epigenetic variation during long-term Taxus cell culture. PLANT CELL REPORTS 2012; 31:1321-1331. [PMID: 22562779 DOI: 10.1007/s00299-012-1251-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2012] [Revised: 03/15/2012] [Accepted: 03/17/2012] [Indexed: 05/31/2023]
Abstract
UNLABELLED Gradual loss of secondary metabolite production is a common obstacle in the development of a large-scale plant cell production system. In this study, cell morphology, paclitaxel (Taxol®) biosynthetic ability, and genetic and epigenetic variations in the long-term culture of Taxus media cv Hicksii cells were assessed over a 5-year period to evaluate the mechanisms of the loss of secondary metabolites biosynthesis capacity in Taxus cell. The results revealed that morphological variations, gradual loss of paclitaxel yield and decreased transcriptional level of paclitaxel biosynthesis key genes occurred during long-term subculture. Genetic and epigenetic variations in these cultures were also studied at different times during culture using amplified fragment-length polymorphism (AFLP), methylation-sensitive amplified polymorphism (MSAP), and high-performance liquid chromatography (HPLC) analyses. A total of 32 primer combinations were used in AFLP amplification, and none of the AFLP loci were found to be polymorphic, thus no major genetic rearrangements were detected in any of the tested samples. However, results from both MSAP and HPLC indicated that there was a higher level of DNA methylation in the low-paclitaxel yielding cell line after long-term culture. Based on these results, we proposed that accumulation of paclitaxel in Taxus cell cultures might be regulated by DNA methylation. To our knowledge, this is the first report of increased methylation with the prolongation of culture time in Taxus cell culture. It provides substantial clues for exploring the gradual loss of the taxol biosynthesis capacity of Taxus cell lines during long-term subculture. KEY MESSAGE DNA methylation maybe involved in the regulation of paclitaxel biosynthesis in Taxus cell culture.
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Affiliation(s)
- Chunhua Fu
- Department of Biotechnology, College of Life Science and Technology, Institute of Resource Biology and Biotechnology, Huazhong University of Science and Technology, 430074 Wuhan, China
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24
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Zhou WW, Ma B, Tang YJ, Zhong JJ, Zheng X. Enhancement of validamycin A production by addition of ethanol in fermentation of Streptomyces hygroscopicus 5008. BIORESOURCE TECHNOLOGY 2012; 114:616-621. [PMID: 22521597 DOI: 10.1016/j.biortech.2012.03.124] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2012] [Revised: 03/31/2012] [Accepted: 03/31/2012] [Indexed: 05/31/2023]
Abstract
The effect of ethanol on the production of the important agro-antibiotic validamycin A (Val-A) in medium containing agricultural by-products was investigated. Under the optimal condition of ethanol addition, the maximal Val-A production titer reached 18 g/L, which increased by 60% compared to the control. To provide an insight into cell response to ethanol, the intracellular reactive oxygen species (ROS), gene transcription and enzyme activity were determined. Intracellular ROS as the molecular signal was increased in the ethanol condition. Global regulators afsR and glnR were involved in regulation of Val-A biosynthesis, and the transcription of eight Val-A structural genes was enhanced. The activity of glucose-6-phosphate dehydrogenase (G6PD) was enhanced while glyceraldehyde 3-phosphate dehydrogenase (GAPDH) was inhibited. A signal transduction cascade from cell signal response to activated transcription of Val-A biosynthetic genes and enhanced antibiotic production is proposed. The information can be helpful for the improvement of large-scale fermentation.
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Affiliation(s)
- Wen-Wen Zhou
- School of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, Zhejiang, China
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25
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Patil RA, Kolewe ME, Normanly J, Walker EL, Roberts SC. Contribution of taxane biosynthetic pathway gene expression to observed variability in paclitaxel accumulation in Taxus suspension cultures. Biotechnol J 2012; 7:418-27. [PMID: 22095859 PMCID: PMC3505991 DOI: 10.1002/biot.201100183] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2011] [Revised: 10/25/2011] [Accepted: 11/14/2011] [Indexed: 11/08/2022]
Abstract
Variability in product accumulation is one of the major obstacles limiting the widespread commercialization of plant cell culture technology to supply natural product pharmaceuticals. Despite extensive process engineering efforts, which have led to increased yields, plant cells exhibit variability in productivity that is poorly understood. Elicitation of Taxus cultures with methyl jasmonate (MeJA) induces paclitaxel accumulation, but to varying extents in different cultures. In the current study, cultures with different aggregation profiles were established to create predictable differences in paclitaxel accumulation upon MeJA elicitation. Expression of known paclitaxel biosynthetic genes in MeJA-elicited cultures exhibiting both substantial (15-fold) and moderate (2-fold) differences in paclitaxel accumulation was analyzed using quantitative reverse transcriptase PCR. Each population exhibited the characteristic large increase in paclitaxel pathway gene expression following MeJA elicitation; however, differences in expression between populations were minor, and only observed for the cultures with the 15-fold variation in paclitaxel content. These data suggest that although upregulation of biosynthetic pathway gene expression contributes to observed increases in paclitaxel synthesis upon elicitation with MeJA, there are additional factors that need to be uncovered before paclitaxel productivity can be fully optimized.
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Affiliation(s)
- Rohan A. Patil
- Department of Chemical Engineering, University of Massachusetts, Amherst, MA, USA
| | - Martin E. Kolewe
- Department of Chemical Engineering, University of Massachusetts, Amherst, MA, USA
| | - Jennifer Normanly
- Department of Biochemistry and Molecular Biology, University of Massachusetts, Amherst, MA, USA
| | - Elsbeth L. Walker
- Department of Biology, University of Massachusetts, Amherst, MA, USA
| | - Susan C. Roberts
- Department of Chemical Engineering, University of Massachusetts, Amherst, MA, USA
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26
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Zhou X, Zhong JJ. Quantitative influence of endogenous salicylic acid level on taxuyunnanine C biosynthesis in suspension cultures of Taxus chinensis. Biotechnol Bioeng 2011; 108:216-21. [PMID: 20812255 DOI: 10.1002/bit.22915] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Intracellular signals are critical to secondary metabolite biosynthesis by plant cells, but their quantitative effects are not yet well understood in plant cell cultures. Using Taxus chinensis suspension culture, which has the potential to provide a sustainable supply of highly useful bioactive taxoids, this work investigated the impact of endogenous salicylic acid (SA) level on taxuyunnanine C (Tc) biosynthesis. It was observed that the Tc accumulation was strongly dependent on the endogenous SA level. Under elicitation with an endogenous SA of 97.1 ± 11.8 µg/g dry weight, a maximal Tc content of 10.3 ± 0.52 mg/g dry weight was obtained. The transcription levels of Tc biosynthetic genes of geranylgeranyl diphosphate synthase and taxadiene synthase were also analyzed, and they were increased with increase of internal SA level. The results demonstrated that manipulation of endogenous SA level could be an efficient strategy for improving secondary metabolite biosynthesis in plant cell culture.
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Affiliation(s)
- Xin Zhou
- State Key Laboratory of Bioreactor Engineering, School of Bioengineering, East China University of Science and Technology, Shanghai, China
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27
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Zhou X, Zhong JJ. Intracellular salicylic acid is involved in signal cascade regulating low ammonium-induced taxoid biosynthesis in suspension cultures of Taxus chinensis. Appl Microbiol Biotechnol 2011; 90:1027-36. [DOI: 10.1007/s00253-011-3113-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2010] [Revised: 12/31/2010] [Accepted: 01/06/2011] [Indexed: 10/18/2022]
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Wei ZH, Bai L, Deng Z, Zhong JJ. Enhanced production of validamycin A by H2O2-induced reactive oxygen species in fermentation of Streptomyces hygroscopicus 5008. BIORESOURCE TECHNOLOGY 2011; 102:1783-1787. [PMID: 20952185 DOI: 10.1016/j.biortech.2010.08.114] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2010] [Revised: 08/27/2010] [Accepted: 08/30/2010] [Indexed: 05/30/2023]
Abstract
A novel fermentation strategy to enhance antibiotics production was demonstrated by inducing reactive oxygen species (ROS), and validamycin A (VAL-A) production by Streptomyces hygroscopicus 5008 in agro-industrial residues containing medium was taken as an example. By optimizing H2O2 amount and addition time, the intracellular ROS level was increased, and VAL-A production titer was enhanced by 40% on day 4 when 25 μM H2O2 was added at 8th h of fermentation. Addition of diphenyleneiodonium chloride (ROS inhibitor) reduced the H2O2 induction effect. The transcription level of eight VAL-A structure genes was enhanced by ROS, and activities of glucose-6-phosphate dehydrogenase and ValG enzyme were increased while glyceraldehyde 3-phosphate dehydrogenase activity was inhibited. This work demonstrated that ROS induction was a useful strategy for VAL-A fermentation, and the information on gene transcription and enzyme activities may be helpful to further understanding the mechanism of ROS effect on the antibiotic biosynthesis.
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Affiliation(s)
- Zhen-Hua Wei
- State Key Laboratory of Bioreactor Engineering, School of Bioengineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
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Faurie B, Cluzet S, Mérillon JM. Implication of signaling pathways involving calcium, phosphorylation and active oxygen species in methyl jasmonate-induced defense responses in grapevine cell cultures. JOURNAL OF PLANT PHYSIOLOGY 2009; 166:1863-1877. [PMID: 19631405 DOI: 10.1016/j.jplph.2009.05.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2009] [Revised: 05/22/2009] [Accepted: 05/22/2009] [Indexed: 05/28/2023]
Abstract
Perception of elicitors triggers plant defense responses via various early signal transduction pathways. Methyl jasmonate (MeJA) stimulates defense responses in grapevine (Vitis vinifera). We investigated the involvement of various partners (calcium, ROS, reversible phosphorylation) in MeJA-induced responses by using a pharmacological approach. We used specific calcium channel effectors and inhibitors of serine/threonine phosphatases, superoxide dismutase and NAD(P)H oxidase and investigated production of stilbenes (resveratrol and its glucoside, piceid, the major form), which are the grapevine phytoalexins. RNA accumulation of two genes encoding enzymes involved in stilbene synthesis (PAL and STS), three genes encoding pathogenesis-related proteins (CHIT4C, PIN and GLU) and one gene encoding an enzyme producing jasmonates (LOX) were also assessed. Calcium and its origin seemed to play a major role in MeJA-induced grapevine defense responses. Phytoalexin production was strongly affected if calcium from the influx plasma membrane was inhibited, whereas calcium from the intracellular compartments did not seem to be involved. ROS production seemed to interfere with MeJA-stimulated defense responses, and protein phosphorylation/dephosphorylation events also played a direct role.
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Affiliation(s)
- Bertrand Faurie
- Groupe d'Etude des Substances Végétales à Activité Biologique, EA 3675, UFR Sciences Pharmaceutiques, Université de Bordeaux, ISVV Bordeaux-Aquitaine-CS 50008-210, Chemin de Leysotte, 33882 Villenave d'Ornon Cedex, France
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Zhang WX, Tang YJ, Zhong JJ. Impact of oxygen level in gaseous phase on gene transcription and ganoderic acid biosynthesis in liquid static cultures of Ganoderma lucidum. Bioprocess Biosyst Eng 2009; 33:683-90. [DOI: 10.1007/s00449-009-0379-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2009] [Accepted: 09/08/2009] [Indexed: 10/20/2022]
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31
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Zhou X, Zhong JJ. Effect of initial ammonium concentration on taxoid production and biosynthesis genes expression profile in suspension cultures of Taxus chinensis cells. Eng Life Sci 2009. [DOI: 10.1002/elsc.200800109] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Stockman G, Boland R. Integration of Plasma Membrane and Nuclear Signaling in Elicitor Regulation of Plant Secondary Metabolism. Nat Prod Commun 2008. [DOI: 10.1177/1934578x0800300803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The plant kingdom represents a valuable source of natural products of commercial interest. These compounds, named secondary metabolites, are not essential for the survival of plants, but confer them some advantages that allow adaptation to changes in their environment. Nevertheless, yields of secondary metabolites are low for commercial purposes, so it has become important to design strategies for increasing their production. Plants manage to adapt to physical changes in their environment, defending themselves against pathogen attack or herbivore wounding. Such aggressive stimuli, also known as elicitors, initiate signaling metabolic cascades that induce accumulation of certain secondary metabolites. Progress has been recently achieved in the understanding of signaling events originating from elicitation and related transcriptional regulation. These advances will allow maneuvering expression of key enzymes implicated in biosynthetic pathways of secondary metabolites, thereby enhancing their accumulation.
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Affiliation(s)
- Gastón Stockman
- Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, Bahía Blanca, Buenos Aires 8000, Argentina
| | - Ricardo Boland
- Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, Bahía Blanca, Buenos Aires 8000, Argentina
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Hu FX, Zhong JJ. Jasmonic acid mediates gene transcription of ginsenoside biosynthesis in cell cultures of Panax notoginseng treated with chemically synthesized 2-hydroxyethyl jasmonate. Process Biochem 2008. [DOI: 10.1016/j.procbio.2007.10.010] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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34
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Hu FX, Zhong JJ. Role of Jasmonic Acid in Alteration of Ginsenoside Heterogeneity in Elicited Cell Cultures of Panax notoginseng. J Biosci Bioeng 2007; 104:513-6. [DOI: 10.1263/jbb.104.513] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2007] [Accepted: 09/10/2007] [Indexed: 11/17/2022]
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Murphy T, Roy I, Harrop A, Dixon K, Keshavarz T. Effect of oligosaccharide elicitors on bacitracin A production and evidence of transcriptional level control. J Biotechnol 2007; 131:397-403. [PMID: 17825450 DOI: 10.1016/j.jbiotec.2007.07.943] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2007] [Revised: 06/18/2007] [Accepted: 07/18/2007] [Indexed: 11/22/2022]
Abstract
The role of oligosaccharides as biotic elicitors for the enhanced production of antibiotics and enzymes has been established in recent years. These findings could have significant promise for the pharmaceutical and biotechnology industries. Before the elicitors could be used at large-scale, reproducible production and high levels of enhancement are essential. In order to ensure the robustness of elicitation and exploit the process an understanding of this phenomenon at the molecular level is required. Bacitracin produced by Bacillus licheniformis is widely used as an animal feed additive and antibiotic against Gram-positive bacteria. In this work we report, the effect of single and multiple additions of different elicitors to B. licheniformis cultures for the production of bacitracin A. The results obtained showed that single addition of oligoguluronate to the cultures enhanced the levels of bacitracin A by 23.3%. Moreover, multiple elicitor addition of oligoguluronate and mannan oligosaccharide further enhanced the production of bacitracin A by 13.2% and 36.5% compared to single elicitor addition and control cultures, respectively. In addition, for the first time, it was found that elicitor supplementation of cultures increased the transcription level of the bacitracin biosynthetic genes bacABC, indicating transcriptional level control of the elicitor.
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Affiliation(s)
- Tania Murphy
- Microbial Biotechnology Research Group, Department of Molecular & Applied Biosciences, University of Westminster, London, UK
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