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Guo Y, Xu M, Zhang J, Ma Z, Cui J, Zhao L, Chen L, Shi G, Ding Z. Refined regulation of polysaccharide biosynthesis in edible and medicinal fungi: From pathways to production. Carbohydr Polym 2025; 358:123560. [PMID: 40383600 DOI: 10.1016/j.carbpol.2025.123560] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2025] [Revised: 03/18/2025] [Accepted: 03/27/2025] [Indexed: 05/20/2025]
Abstract
Polysaccharides derived from edible and medicinal fungi (EMF) exhibit various biological activities, rendering them useful in the pharmaceutical, nutraceutical, and food industries. However, their intricate biosynthetic pathways limit their potential, necessitating a deeper understanding of their structure-function relationships. Ganoderma lucidum has emerged as a key model for elucidating polysaccharide biosynthesis in EMF. In this paper, we present a comprehensive review of the current state of research on EMF polysaccharide biosynthesis from the perspective of structure and biosynthetic pathways, and concentrate on strategies for enhancing the precise regulation of polysaccharide production. The complexity of these structures, governed by a refined biosynthetic pathway, is crucial for determining their functional diversity. This review highlights three key strategies for enhancing polysaccharide production. Genome-scale metabolic remodeling is useful for the systematic design and optimization of pathways, while profiling metabolic remodeling regulates critical genes and metabolic nodes. The regulation of enzyme activity, particularly glycosyltransferases and glycoside hydrolases, can enhance biosynthetic efficiency. Furthermore, this review identifies several future challenges pertaining to polysaccharide synthesis. We establish a robust foundation for the advanced bio-manufacturing of polysaccharides, and provide theoretical guidance, along with empirical support, to precisely regulate polysaccharide synthesis in EMF, underscoring their significance as functional foods.
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Affiliation(s)
- Yuxi Guo
- School of Biotechnology and Key Laboratory of Carbohydrate Chemistry and Biotechnology of Ministry of Education, Jiangnan University, Wuxi 214122, China; National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, China
| | - Mengmeng Xu
- School of Biotechnology and Key Laboratory of Carbohydrate Chemistry and Biotechnology of Ministry of Education, Jiangnan University, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, China
| | - Jing Zhang
- Jiangsu Zhongnongke Food Engineering Co., Ltd, Suqian 223800, China
| | - Zhongbao Ma
- School of Biotechnology and Key Laboratory of Carbohydrate Chemistry and Biotechnology of Ministry of Education, Jiangnan University, Wuxi 214122, China; National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, China
| | - Jiahao Cui
- School of Biotechnology and Key Laboratory of Carbohydrate Chemistry and Biotechnology of Ministry of Education, Jiangnan University, Wuxi 214122, China; National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, China
| | - Liting Zhao
- School of Biotechnology and Key Laboratory of Carbohydrate Chemistry and Biotechnology of Ministry of Education, Jiangnan University, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, China
| | - Lei Chen
- School of Biotechnology and Key Laboratory of Carbohydrate Chemistry and Biotechnology of Ministry of Education, Jiangnan University, Wuxi 214122, China; National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, China
| | - Guiyang Shi
- School of Biotechnology and Key Laboratory of Carbohydrate Chemistry and Biotechnology of Ministry of Education, Jiangnan University, Wuxi 214122, China; National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, China
| | - Zhongyang Ding
- School of Biotechnology and Key Laboratory of Carbohydrate Chemistry and Biotechnology of Ministry of Education, Jiangnan University, Wuxi 214122, China; National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, China.
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Wang X, Li Y, Zheng S, He F, Yang Y, Yang W, Pan J, Liang Y, Mei Y. Polysaccharide biosynthetic pathway profiling and homologous expression of the phosphomannomutase gene in Sanghuangporus sanghuang based on multi-omics analysis. Int J Biol Macromol 2025:144578. [PMID: 40412693 DOI: 10.1016/j.ijbiomac.2025.144578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2024] [Revised: 05/17/2025] [Accepted: 05/21/2025] [Indexed: 05/27/2025]
Abstract
Sanghuangprous sanghuang is a valuable medicinal macrofungus with abundant active metabolites. Improvement of macrofungal strains to increase the production of metabolites, especially polysaccharides, has become a research priority. In this study, we sequenced the whole genome and transcriptome of S. sanghuang SS-01 strain, identified the genes of key enzymes involved in the polysaccharide synthetic pathway, and constructed a homologous recombinant strain to increase S. sanghuang polysaccharide (SSP) yield for the first time. The assembled genome is 37.83 Mb with 22 contigs, encoding 7266 predicted genes. Forty putative genes related to sugar metabolism were identified, and the proposed SSP synthetic pathway was mapped. Transcriptional profiling was performed under different culture conditions to investigate the importance of key gene expression on SSP content. The phosphomannomutase (SsPMM) gene, which showed a strong correlation with SSP production, was identified from six differentially expressed genes. Based on the polyethylene glycol-mediated protoplast transformation system, a homologous recombinant strain (RsPMM) was obtained. The upregulated expression level of SsPMM (1.39-fold) was associated with significantly higher SSP content (1.46-fold) in RsPMM compared to the wild-type strain. Our findings provide an effective approach to increase polysaccharide production and facilitate the understanding of metabolite synthesis mechanisms in S. sanghuang.
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Affiliation(s)
- Xue Wang
- National Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Yanbin Li
- National Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Siqi Zheng
- National Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Fanfan He
- National Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Yicheng Yang
- National Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Wendi Yang
- National Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Jiashi Pan
- National Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Yunxiang Liang
- National Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China; Cooperative Innovation Center of Industrial Fermentation (Ministry of Education & Hubei Province), Hubei University of Technology, Wuhan 430068, PR China
| | - Yuxia Mei
- National Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China.
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Li Z, Xu C, Pan J, Zhou Y, Li H, Li W, Zou Y. Augmentation of exopolysaccharide synthesis and its influence on biofunctional properties of polysaccharide in Sanghuangporus vaninii via targeted overexpression of phosphoglucomutase. Int J Biol Macromol 2025; 306:141182. [PMID: 39965685 DOI: 10.1016/j.ijbiomac.2025.141182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2024] [Revised: 01/16/2025] [Accepted: 02/15/2025] [Indexed: 02/20/2025]
Abstract
Phosphoglucomutase (PGM) is considered an essential catalyst in polysaccharide biosynthesis, plays a pivotal role in the early stage of carbon metabolism and the synthesis of nucleotide sugars. Polysaccharides are important active components of Sanghuangporus vaninii. Based on the transcriptomic data, the successful cloning and re-annotation of the putative 1353 - bp PGM took place, which encodes a protein of 49.45 kDa. In order to elucidate the function of this gene, overexpression and interference transformation systems were constructed in S. vaninii. The results revealed that the PGM is primarily responsible for regulating the interconversion between glucose-1-phosphate and glucose-6-phosphate. An up - regulation of PGM expression resulted in a significant increase in extracellular polysaccharide content, quantified at 7.72 % and 15.15 %, whereas a down - regulation of PGM expression resulted in a significant increase in intracellular polysaccharide content (33.68 % and 38.24 %). The antioxidant capacity of intracellular polysaccharide in strain, including hydroxyl radical scavenging, superoxide anion radical scavenging, 2-diphenyl-1-picrylhydrazyl (DPPH) scavenging, ABTS+ radical scavenging and FRAP scavenging was significantly increased by RNA interference with the expression of PGM, while the overexpression of PGM was found to enhance the antioxidant capacity of extracellular polysaccharide to a certain degrees. Furthermore, the modulation of PGM expression had a significant impact on polysaccharide metabolic pathways, resulting in alterations in monosaccharide composition and impacting the content of cell wall components, and the microstructure of polysaccharides. These findings elucidate the polysaccharide biosynthetic pathway in S. vaninii, highlighting the PGM as a prime target for the propagation of high-yield polysaccharide-producing strains. This study stands as a basic reference for amplifying polysaccharide production via strategic metabolic regulation.
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Affiliation(s)
- Zihao Li
- State Key Laboratory of Efficient Utilization of Arable Land in China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China; School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China
| | - Congtao Xu
- State Key Laboratory of Efficient Utilization of Arable Land in China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jinlong Pan
- State Key Laboratory of Efficient Utilization of Arable Land in China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yi Zhou
- State Key Laboratory of Efficient Utilization of Arable Land in China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Haikang Li
- State Key Laboratory of Efficient Utilization of Arable Land in China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Weihang Li
- State Key Laboratory of Efficient Utilization of Arable Land in China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Yajie Zou
- State Key Laboratory of Efficient Utilization of Arable Land in China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
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Wen TT, Yang YM, Zhang YX, Liu MQ, Qian ZY, Zhang ZY, Dong CH, Sun L, Xu L, Sun WJ, Cui FJ. CRISPR-Cas9/Safe Harbor-Targeted Overexpression of Glucan Synthase Gene CmGls in Edible Mushroom Cordyceps militaris. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2025; 73:10456-10469. [PMID: 40252041 DOI: 10.1021/acs.jafc.5c01310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/21/2025]
Abstract
The membrane-integrated β-1,3-glucan synthase is the key enzyme involved in the biosynthesis of the core component β-1,3-glucan of the fungal cell wall. To date, the precise and targeted insertion of the β-1,3-glucan synthase gene into the genomes of edible fungi for safe and predictable overexpression has been extremely difficult due to the large DNA sequences (>5.0 kb) encoding the multitransmembrane domains and large molecular weights. In the present study, a large 5.9 kb DNA sequence of the membrane-bound β-1,3-glucan synthase gene CmGls was successfully and precisely inserted at a genomic safe harbor site CmSh1 of the C. militaris genome for the first time. By comparing mycelial and fermentation performance, overexpression of the β-1,3-glucan synthase gene CmGls resulted in rapid radial growth with a more pronounced yellowish color and increased resistance to cell wall stresses. Overexpression of CmGls significantly improved exopolysaccharide production with higher molecular weights, accompanied by an increase in the transcription levels of genes associated with polysaccharide/glucan synthesis, such as CmPgm, CmPgi, and CmUgp. Our findings provide convincing proof for the elucidation of glucan biosynthetic pathways and a basis for developing safe strains with highly efficient production of polysaccharides/glucans by edible fungi.
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Affiliation(s)
- Ting-Ting Wen
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Yu-Meng Yang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Yi-Xin Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Meng-Qian Liu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Zhuo-Yu Qian
- Guangdong HAID Research Institute, Guangzhou 511400, PR China
| | - Zi-Ying Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Cai-Hong Dong
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Lei Sun
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Lin Xu
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Wen-Jing Sun
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China
- Jiangxi Provincial Engineering and Technology Center for Food Additives Bio-production, Dexing 334221, PR China
| | - Feng-Jie Cui
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China
- Jiangxi Provincial Engineering and Technology Center for Food Additives Bio-production, Dexing 334221, PR China
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5
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Li Y, Zhang Y, Wei Y, Xiang Q, Chen Q, Yu X, Zhang L, Peng W, Penttinen P, Gu Y. Exogenous trehalose increased polysaccharide content and altered their properties and metabolism in Lentinula edodes mycelium. Int J Biol Macromol 2025; 310:143387. [PMID: 40267868 DOI: 10.1016/j.ijbiomac.2025.143387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2024] [Revised: 03/31/2025] [Accepted: 04/19/2025] [Indexed: 04/25/2025]
Abstract
Trehalose promotes polysaccharide synthesis in edible mushrooms, yet its effect on the antioxidant activity and structure of Lentinula edodes mycelium polysaccharides is still unknown. We investigated the effect of trehalose on the antioxidant activity of L. edodes polysaccharides and expression of genes related to L. edodes polysaccharide metabolism. Five g/L trehalose increased the biomass and polysaccharide content of L. edodes mycelium by over 50 % compared to the control. Trehalose increased the superoxide anion radical scavenging rate of L. edodes polysaccharides up to 80.9 %. Compared to the control, the molecular weight of polysaccharides was lower, and their glucuronic acid content was higher in the trehalose treatment. RNA-seq analysis revealed 1045 differentially expressed genes in the trehalose treatment compared to the control. Genes related to glycolysis/gluconeogenesis pathway, starch and sucrose metabolic pathway, and the pentose and glucuronate interconversions pathway were differentially expressed, possibly accounting for the increased polysaccharide synthesis. In summary, exogenous trehalose has potential to increase the biosynthesis and biological activity of L. edodes polysaccharides.
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Affiliation(s)
- Yan Li
- Department of Microbiology, College of Resources, Sichuan Agricultural University, Chengdu 611130, China; Guizhou Tea Research Institute, Guiyang 550006, China
| | - Ying Zhang
- Department of Microbiology, College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Yuemei Wei
- Department of Microbiology, College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Quanju Xiang
- Department of Microbiology, College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Qiang Chen
- Department of Microbiology, College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Xiumei Yu
- Department of Microbiology, College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Lingzi Zhang
- Department of Microbiology, College of Resources, Sichuan Agricultural University, Chengdu 611130, China
| | - Weihong Peng
- Sichuan Academy of Agricultural Sciences, Chengdu 611130, China
| | - Petri Penttinen
- Department of Microbiology, College of Resources, Sichuan Agricultural University, Chengdu 611130, China.
| | - Yunfu Gu
- Department of Microbiology, College of Resources, Sichuan Agricultural University, Chengdu 611130, China.
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6
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Meshram V, Thakur P, Jadhav SK, Chandrawanshi NK. GC-MS Analysis of Polysaccharides from an Intergeneric Hybrid of Pleurotus florida and Cordyceps militaris: A Comparative Study. Appl Biochem Biotechnol 2025; 197:1805-1830. [PMID: 39612074 DOI: 10.1007/s12010-024-05121-z] [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] [Accepted: 11/19/2024] [Indexed: 11/30/2024]
Abstract
Edible and medicinal mushrooms are valuable sources of polysaccharides, known for their dual roles as immunostimulants and immunosuppressants. This study aimed to enhance polysaccharide content by fusing two mushroom species, P. florida and C. militaris, while exploring their antioxidant and antibacterial potential. These mushrooms have diverse health benefits, including lowering high cholesterol, providing anti-inflammatory effects, supporting diabetes management, aiding in cancer treatment, and enhancing the efficacy of COVID-19 vaccines. Successful hyphal fusion was achieved, and optimal culture conditions were determined using response surface methodology. The hybrids exhibited superior growth compared to the parental strains. Hyphal fusion improved several attributes, resulting in diverse hybrids with increased biomass and metabolite production. FTIR analysis confirmed the presence of exopolysaccharides, with concentrations measured at 28.4 g/L (P1), 31.50 g/L (CD), and 36.74 g/L (F3). GC-MS analysis identified various bioactive metabolites, including a higher concentration of dimethyl palmitamine in the hybrid, a novel compound, butanenitrile, 2-(methoxymethoxy), which was not found in the parental strains. These compounds are likely responsible for the enhanced antimicrobial and antioxidant activities.
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Affiliation(s)
- Varsha Meshram
- School of Studies in Biotechnology, Pt. Ravishankar Shukla University, Raipur, Chhattisgarh, 492 010, India
| | - Prachi Thakur
- St. Thomas College, Ruabandha, Bhilai, Durg, Chhattisgarh, 490 006, India
| | - Shailesh Kumar Jadhav
- School of Studies in Biotechnology, Pt. Ravishankar Shukla University, Raipur, Chhattisgarh, 492 010, India
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Tikhomirova TS, Taraskevich MR, Lepekhin YA, Shevelyova MP, Nemashkalov VA. Optimization and scaling up of extracellular polysaccharide production by submerged culture of Ganoderma lucidum on starch-containing medium using response surface methodology and laboratory bioreactors of various designs. Lett Appl Microbiol 2024; 77:ovae115. [PMID: 39572077 DOI: 10.1093/lambio/ovae115] [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: 09/05/2024] [Revised: 11/11/2024] [Accepted: 11/20/2024] [Indexed: 12/12/2024]
Abstract
Basidiomycetes, known for their production of bioactive compounds, traditionally use simple sugars for fermentation. However, their ability to degrade complex plant polysaccharides through enzyme secretion presents potential for the use of renewable raw materials. This study focused on the optimization of exopolysaccharide (EPS) production and efficient substrate consumption by Ganoderma lucidum using response surface methodology (RSM). Using an optimized medium containing 15 g⋅l-1 wheat starch, 0.375 g⋅l-1 NH4Cl, and 0.75 g⋅l-1 CaCl2 (C/N ratio of 40), a significant increase in EPS concentration from 121.1 ± 10.2 mg⋅l-1 to 229.0 ± 20.3 mg⋅l-1 and starch degradation degree (SDD) from 9.1% to 57.6% was achieved after 9 d of submerged cultivation. Scale-up experiments were conducted in both column and stirred tank bioreactors, employing submerged and immobilized cultivation modes. Submerged cultivation in the column bioreactor yielded the highest process desirability of 0.56, achieving EPS concentration of 192.5 ± 5.4 mg⋅l-1 and 60.2% SDD within 7 d. These results highlight the potential of the used column bioreactor for efficient and rapid EPS production. Notably, bioreactor experiments revealed local maxima in EPS content at specific time points, suggesting that cell wall degradation, potentially induced by shear stress, may contribute to the release of polysaccharides into the culture broth.
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Affiliation(s)
- Tatyana S Tikhomirova
- The Institute of Biological Instrumentation of the Russian Academy of Sciences (IBI RAS), Federal Research Center Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences (PSCBR RAS), Institutskaya 7, Pushchino, Moscow Region 142290, Russia
| | - Maxim R Taraskevich
- The Institute of Biological Instrumentation of the Russian Academy of Sciences (IBI RAS), Federal Research Center Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences (PSCBR RAS), Institutskaya 7, Pushchino, Moscow Region 142290, Russia
| | - Yuriy A Lepekhin
- The Institute of Biological Instrumentation of the Russian Academy of Sciences (IBI RAS), Federal Research Center Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences (PSCBR RAS), Institutskaya 7, Pushchino, Moscow Region 142290, Russia
| | - Marina P Shevelyova
- The Institute of Biological Instrumentation of the Russian Academy of Sciences (IBI RAS), Federal Research Center Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences (PSCBR RAS), Institutskaya 7, Pushchino, Moscow Region 142290, Russia
| | - Vitaliy A Nemashkalov
- The Institute of Biological Instrumentation of the Russian Academy of Sciences (IBI RAS), Federal Research Center Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences (PSCBR RAS), Institutskaya 7, Pushchino, Moscow Region 142290, Russia
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Cui FJ, Fu X, Sun L, Zan XY, Meng LJ, Sun WJ. Recent insights into glucans biosynthesis and engineering strategies in edible fungi. Crit Rev Biotechnol 2024; 44:1262-1279. [PMID: 38105513 DOI: 10.1080/07388551.2023.2289341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 02/28/2023] [Accepted: 04/21/2023] [Indexed: 12/19/2023]
Abstract
Fungal α/β-glucans have significant importance in cellular functions including cell wall structure, host-pathogen interactions and energy storage, and wide application in high-profile fields, including food, nutrition, and pharmaceuticals. Fungal species and their growth/developmental stages result in a diversity of glucan contents, structures and bioactivities. Substantial progresses have been made to elucidate the fine structures and functions, and reveal the potential molecular synthesis pathway of fungal α/β-glucans. Herein, we review the current knowledge about the biosynthetic machineries, including: precursor UDP-glucose synthesis, initiation, elongation/termination and remodeling of α/β-glucan chains, and molecular regulation to maximally produce glucans in edible fungi. This review would provide future perspectives to biosynthesize the targeted glucans and reveal the catalytic mechanism of enzymes associated with glucan synthesis, including: UDP-glucose pyrophosphate phosphorylases (UGP), glucan synthases, and glucanosyltransferases in edible fungi.
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Affiliation(s)
- Feng-Jie Cui
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, P. R. China
- Jiangxi Provincial Engineering and Technology Center for Food Additives Bio-production, Dexing, P. R. China
| | - Xin Fu
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, P. R. China
| | - Lei Sun
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, P. R. China
| | - Xin-Yi Zan
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, P. R. China
| | - Li-Juan Meng
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, P. R. China
| | - Wen-Jing Sun
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, P. R. China
- Jiangxi Provincial Engineering and Technology Center for Food Additives Bio-production, Dexing, P. R. China
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9
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Zheng L, Zhang M, Zhao W. Enhanced mycelium biomass and polysaccharide production in genetically modified Pleurotus ostreatus using agricultural wastes. Int J Biol Macromol 2024; 278:134318. [PMID: 39111500 DOI: 10.1016/j.ijbiomac.2024.134318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 07/11/2024] [Accepted: 07/28/2024] [Indexed: 08/18/2024]
Abstract
Edible fungi, healthier for humans and sustainable for the planet, attract unprecedented attention. In the study, the genetically modified Pleurotus ostreatus overexpression phosphoglucomutase (PGM) was constructed. P. ostreatus overexpression PGM (Po::PGM) had 4.96-folds higher expression level of PGM. Po::PGM grew thicker mycelium and more mycelium branches. Additional Ca2+ can inhibit mycelium growth, and cyclic adenosine monophosphate completely inhibited their growth of Po::PGM. Secondly, Overexpression of PGM made P. ostreatus become more sensitive to cell wall disruptors, and caused 12.75 % reduction of β-1, 3-glucan and 40.53 % increase of chitin in cell wall. In submerged fermentation, the mycelia biomass yield and endopolysaccharide (IPS) production of Po::PGM in basic PDB can reach 11.18 g/l and 2.55 g/l, increasing by 20.86 % and 28.79 %, respectively. Whereas exopolysaccharide (EPS) reduced by 3.28 %. After replacing potato and glucose in PDB by wheat bran, mycelia biomass and EPS production of Po::PGM were all improved. The additional lactose in wheat bran did not only furtherly enhance mycelia biomass yield of Po::PGM to 27.78 g/l by 199.03 %, but IPS production also increased by 277.99 % to 6.07 g/l. The results provided us key ideas and important research directions that at least manipulating the PGM gene could obtain high-efficient use of agricultural wastes producing more fungus-based foods.
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Affiliation(s)
- Libing Zheng
- School of Food and Technology, Jiangnan University, Wuxi 214122, China; Institute of Future Food Technology, JITRI, Yixing 214200, China
| | - Mengqing Zhang
- School of Food and Technology, Jiangnan University, Wuxi 214122, China; Institute of Future Food Technology, JITRI, Yixing 214200, China
| | - Wei Zhao
- School of Food and Technology, Jiangnan University, Wuxi 214122, China; Institute of Future Food Technology, JITRI, Yixing 214200, China.
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Zhao Y, Yao Y, Li H, Han Z, Ma X. Integrated transcriptome and metabolism unravel critical roles of carbon metabolism and oxidoreductase in mushroom with Korshinsk peashrub substrates. BMC Genomics 2024; 25:763. [PMID: 39107700 PMCID: PMC11302058 DOI: 10.1186/s12864-024-10666-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Accepted: 07/25/2024] [Indexed: 08/10/2024] Open
Abstract
Edible fungi cultivation serves as an efficient biological approach to transforming agroforestry byproducts, particularly Korshinsk peashrub (KP) branches into valuable mushroom (Lentinus edodes) products. Despite the widespread use of KP, the molecular mechanisms underlying its regulation of mushroom development remain largely unknown. In this study, we conducted a combined analysis of transcriptome and metabolism of mushroom fruiting bodies cultivated on KP substrates compared to those on apple wood sawdust (AWS) substrate. Our aim was to identify key metabolic pathways and genes that respond to the effects of KP substrates on mushrooms. The results revealed that KP induced at least a 1.5-fold increase in protein and fat content relative to AWS, with 15% increase in polysaccharide and total sugar content in mushroom fruiting bodies. There are 1196 differentially expressed genes (DEGs) between mushrooms treated with KP relative to AWS. Bioinformatic analysis show significant enrichments in amino acid metabolic process, oxidase activity, malic enzyme activity and carbon metabolism among the 698 up-regulated DEGs induced by KP against AWS. Additionally, pathways associated with organic acid transport and methane metabolism were significantly enriched among the 498 down-regulated DEGs. Metabolomic analysis identified 439 differentially abundant metabolites (DAMs) in mushrooms treated with KP compared to AWS. Consistent with the transcriptome data, KEGG analysis on metabolomic dataset suggested significant enrichments in carbon metabolism, alanine, aspartate and glutamate metabolism among the up-regulated DAMs by KP. In particular, some DAMs were enhanced by 1.5-fold, including D-glutamine, L-glutamate, glucose and pyruvate in mushroom samples treated with KP relative to AWS. Targeted metabolomic analysis confirmed the contents of DAMs related to glutamate metabolism and energy metabolism. In conclusion, our findings suggest that reprogrammed carbon metabolism and oxidoreductase pathways act critical roles in the enhanced response of mushroom to KP substrates.
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Affiliation(s)
- Yuan Zhao
- Qinghai University, Xining, 810016, China.
- College of Ecol-Environmental Engineering, Qinghai University, Xining, 810016, China.
| | - Youhua Yao
- Qinghai University, Xining, 810016, China
- Academy of Agriculture and Forestry, Qinghai University, Xining, 810016, China
- Qinghai Key Laboratory of Genetic Breeding of Highland Barley/Qinghai Highland Barley Sub- Center of National Wheat Improvement Center, Xining, 810016, China
- Laboratory for Research and Utilization of Qinghai Tibet Plateau Germplasm Resources, Xining, 810016, China
| | - Hongying Li
- Qinghai University, Xining, 810016, China
- College of Ecol-Environmental Engineering, Qinghai University, Xining, 810016, China
| | - Zirui Han
- Qinghai University, Xining, 810016, China
- College of Ecol-Environmental Engineering, Qinghai University, Xining, 810016, China
| | - Xuewen Ma
- Qinghai University, Xining, 810016, China
- College of Ecol-Environmental Engineering, Qinghai University, Xining, 810016, China
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11
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Qiao H, Chen J, Yang S. Enhanced polysaccharide production through quorum sensing system in Cordyceps militaris. J Basic Microbiol 2024; 64:e2400103. [PMID: 38771080 DOI: 10.1002/jobm.202400103] [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: 02/24/2024] [Revised: 04/07/2024] [Accepted: 04/21/2024] [Indexed: 05/22/2024]
Abstract
This study aimed to enhance extracellular polysaccharide (EPS) production in Cordyceps militaris by constructing a quorum sensing (QS) system to regulate the expression of biosynthetic enzyme genes, including phosphoglucomutase, hexokinase, phosphomannomutase, polysaccharide synthase, and UDP-glucose 4-epimerase genes. The study found higher EPS concentrations in seven recombinant strains compared to the wild-type C. militaris, indicating that the overexpression of key enzyme genes increased EPS production. Among them, the CM-pgm-2 strain exhibited the highest EPS production, reaching a concentration of 3.82 ± 0.26 g/L, which was 1.52 times higher than the amount produced by the wild C. militaris strain. Additionally, the regulatory effects of aromatic amino acids on the QS system of the CM-pgm-2 strain were investigated. Under the influence of 45 mg/L tryptophan, the EPS production in CM-pgm-2 reached 4.75 ± 0.20 g/L, representing a 1.90-fold increase compared to wild C. militaris strains. This study provided an effective method for the large-scale production of EPSs in C. militaris, and opened up new avenues for research into fungal QS mechanisms.
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Affiliation(s)
- Huang Qiao
- The College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Jianshu Chen
- The College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
| | - Shengli Yang
- The College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, China
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12
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Gandhale P, Chikhale R, Khanal P, Biswa V, Ali R, Khan MS, Gurav N, Ayyanar M, Das S, Gurav S. Quest for Anti-SARS-CoV-2 antiviral therapeutics: in-silico and in-vitro analysis of edible mushroom- Cordyceps militaris. J Ayurveda Integr Med 2024; 15:100979. [PMID: 38871595 PMCID: PMC11282376 DOI: 10.1016/j.jaim.2024.100979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 04/30/2024] [Accepted: 05/16/2024] [Indexed: 06/15/2024] Open
Abstract
BACKGROUND The emergence and evolution of SARS-CoV-2 resulted a severe threat to public health globally. Due to the lack of an effective vaccine with durable immunity, the disease transited into the endemic phase, necessitating potent antiviral therapy including a scientific basis for current traditional herbal medicine. OBJECTIVE This study aimed to conduct a pharmacoinformatic analysis of selected chemical ingredients and in-vitro evaluation of Cordyceps militaris extract against SARS-CoV-2. MATERIALS AND METHODS C. militaris, the widely used fungus in conventional herbal medicine, was subjected to computational investigation using molecular docking, molecular dynamic simulation and network pharmacology analysis followed by the in-vitro assay for evaluating its anti-SARS-CoV-2 potential. RESULTS The molecular docking analysis of C. militaris revealed the Cordycepin's highest affinity (-9.71 kcal/mol) than other molecules, i.e., Cicadapeptin-I, Cicadapeptin-II, Cordycerebroside-B, and N-Acetyl galactosamine to the receptor binding domain of the SARS-CoV-2 spike protein. C. militaris aqueous extract could reduce the SARS-CoV-2 viral copy numbers by 50.24% using crude extract at 100 μg/mL concentration. CONCLUSION These findings suggest that C. militaris has promising anti-SARS-CoV-2 activity and may be explored as traditional medicine for managing the COVID-19 surge in the endemic phase.
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Affiliation(s)
- Pradeep Gandhale
- ICAR-National Institute of High-Security Animal Diseases, Bhopal, Madhya Pradesh- 462 021, India
| | - Rupesh Chikhale
- UCL School of Pharmacy, 29-39 Brunswick Square, London, WC1N 1AX, UK
| | - Pukar Khanal
- Department of Pharmacology, KLE College of Pharmacy Belagavi, KLE Academy of Higher Education and Research (KAHER) Belagavi- 590010, India
| | - Vashkar Biswa
- Department of Biotechnology, Bodoland University, Assam, 783 370, India
| | - Raju Ali
- Department of Biotechnology, Bodoland University, Assam, 783 370, India
| | - Mohd Shahnawaz Khan
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Nilambari Gurav
- Department of Pharmacognosy, PES's Rajaram and Tarabai Bandekar College of Pharmacy, Ponda, Goa-403 401, India
| | - Muniappan Ayyanar
- Department of Botany, A.V.V.M. Sri Pushpam College (Autonomous), Poondi (Affiliated to Bharathidasan University), Thanjavur, Tamil Nadu, India
| | - Sandeep Das
- Department of Biotechnology, Bodoland University, Assam, 783 370, India
| | - Shailendra Gurav
- Department of Pharmacognosy, Goa College of Pharmacy, Goa University, Goa- 403 001, India.
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Wu Z, Zhang R, Wang J, Li T, Zhang G, Zhang C, Ye H, Zeng X. Characteristics of exopolysaccharides from Paecilomyces hepiali and their simulated digestion and fermentation in vitro by human intestinal microbiota. Int J Biol Macromol 2024; 266:131198. [PMID: 38552700 DOI: 10.1016/j.ijbiomac.2024.131198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Revised: 03/26/2024] [Accepted: 03/26/2024] [Indexed: 04/06/2024]
Abstract
The metabolic process of polysaccharides in gastrointestinal digestions and the effects of the resulting carbohydrates on the composition of gut microbes are important to explore their prebiotic properties. Therefore, the purpose of this study was to investigate the simulated digestion and fecal fermentation in vitro of three fractions (PHEPSs-1, PHEPSs-2 and PHEPSs-3) purified from the crude exopolysaccharides of Paecilomyces hepiali HN1 (PHEPSs) and to explore the potential prebiotic mechanisms. The three purified fractions were characterized by HPLC, UV, FT-IR, SEM and AFM, and they were all of galactoglucomannan family with molecular weight of 178, 232 and 119 kDa, respectively. They could resist the simulated gastrointestinal digestions, but they were metabolized in fecal fermentation in vitro. Furthermore, the mannose in PHEPSs showed a higher utilization rate than that of glucose or galactose. The proliferation effects of PHEPSs on Bifidobacterium and Lactobacillus were weaker significantly than those of fructooligosaccharides before 12 h of fecal fermentation, but stronger after 24 h of fecal fermentation. Meanwhile, higher levels of short-chain fatty acids were found in PHEPSs groups when the fecal fermentation extended to 36 h. Therefore, PHEPSs are expected to have a potent gut healthy activity and can be explored as functional food ingredients.
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Affiliation(s)
- Zhongwei Wu
- School of Life Sciences, Henan Institute of Science and Technology, Xinxiang 453003, China; College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China; Collaborative Innovation Center of Modern Biological Breeding, Henan Province, Xinxiang 453003, China
| | - Rongxian Zhang
- School of Life Sciences, Henan Institute of Science and Technology, Xinxiang 453003, China; Collaborative Innovation Center of Modern Biological Breeding, Henan Province, Xinxiang 453003, China
| | - Jie Wang
- School of Life Sciences, Henan Institute of Science and Technology, Xinxiang 453003, China; Collaborative Innovation Center of Modern Biological Breeding, Henan Province, Xinxiang 453003, China
| | - Tenglong Li
- School of Life Sciences, Henan Institute of Science and Technology, Xinxiang 453003, China; Collaborative Innovation Center of Modern Biological Breeding, Henan Province, Xinxiang 453003, China
| | - Guang Zhang
- School of Life Sciences, Henan Institute of Science and Technology, Xinxiang 453003, China; Collaborative Innovation Center of Modern Biological Breeding, Henan Province, Xinxiang 453003, China
| | - Chaohui Zhang
- School of Life Sciences, Henan Institute of Science and Technology, Xinxiang 453003, China; Collaborative Innovation Center of Modern Biological Breeding, Henan Province, Xinxiang 453003, China
| | - Hong Ye
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiaoxiong Zeng
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China.
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14
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Wu N, Ge X, Yin X, Yang L, Chen L, Shao R, Xu W. A review on polysaccharide biosynthesis in Cordyceps militaris. Int J Biol Macromol 2024; 260:129336. [PMID: 38224811 DOI: 10.1016/j.ijbiomac.2024.129336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 01/05/2024] [Accepted: 01/06/2024] [Indexed: 01/17/2024]
Abstract
Cordyceps militaris (C. militaris) is an edible parasitic fungus with medicinal properties. Its bioactive polysaccharides are structurally diverse and exhibit various metabolic and biological activities, including antitumor, hypoglycemic, antioxidant, hypolipidemic, anti-inflammatory, immunostimulatory, and anti-atherosclerotic effects. These properties make C. militaris-derived polysaccharides a promising candidate for future development. Recent advancements in microbial fermentation technology have enabled successful laboratory cultivation and extraction of these polysaccharides. These polysaccharides are structurally diverse and exhibit various biological activities, such as immunostimulatory, antioxidant, antitumor, hypolipidemic, and anti-atherosclerotic effects. This review aims to summarize the structure and production mechanisms of polysaccharides from C. militaris, covering extraction methods, key genes and pathways involved in biosynthesis, and fermentation factors that influence yield and activity. Furthermore, the future potential and challenges of utilizing polysaccharides in the development of health foods and pharmaceuticals are addressed. This review serves as a valuable reference in the fields of food and medicine, and provides a theoretical foundation for the study of polysaccharides.
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Affiliation(s)
- Na Wu
- School of Marine and Bioengineering, Yancheng Institute of Technology, Yancheng 224051, PR China
| | - Xiaodong Ge
- School of Marine and Bioengineering, Yancheng Institute of Technology, Yancheng 224051, PR China
| | - Xuemei Yin
- School of Marine and Bioengineering, Yancheng Institute of Technology, Yancheng 224051, PR China
| | - Lei Yang
- School of Marine and Bioengineering, Yancheng Institute of Technology, Yancheng 224051, PR China
| | - Ligen Chen
- School of Marine and Bioengineering, Yancheng Institute of Technology, Yancheng 224051, PR China
| | - Rong Shao
- School of Marine and Bioengineering, Yancheng Institute of Technology, Yancheng 224051, PR China
| | - Wei Xu
- School of Marine and Bioengineering, Yancheng Institute of Technology, Yancheng 224051, PR China.
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15
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Li J, Wang BX, Zhang J, Han N, Liu ST, Geng WJ, Jia SR, Li YR, Gan Q, Han PP. A newly discovered glycosyltransferase gene UGT88A1 affects growth and polysaccharide synthesis of Grifola frondosa. Appl Microbiol Biotechnol 2024; 108:246. [PMID: 38421403 PMCID: PMC10904514 DOI: 10.1007/s00253-024-13062-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 02/07/2024] [Accepted: 02/09/2024] [Indexed: 03/02/2024]
Abstract
Grifola frodosa polysaccharides, especially β-D-glucans, possess significant anti-tumor, antioxidant and immunostimulatory activities. However, the synthesis mechanism remains to be elucidated. A newly discovered glycosyltransferase UGT88A1 was found to extend glucan chains in vitro. However, the role of UGT88A1 in the growth and polysaccharide synthesis of G. frondosa in vivo remains unclear. In this study, the overexpression of UGT88A1 improved mycelial growth, increased polysaccharide production, and decreased cell wall pressure sensitivity. Biomass and polysaccharide production decreased in the silenced strain, and the pressure sensitivity of the cell wall increased. Overexpression and silencing of UGT88A1 both affected the monosaccharide composition and surface morphology of G. frondosa polysaccharides and influenced the antioxidant activity of polysaccharides from different strains. The messenger RNA expression of glucan synthase (GLS), UTP-glucose-1-phosphate uridylyltransferase (UGP), and UDP-xylose-4-epimerase (UXE) related to polysaccharide synthesis, and genes related to cell wall integrity increased in the overexpression strain. Overall, our study indicates that UGT88A1 plays an important role in the growth, stress, and polysaccharide synthesis of G. frondosa, providing a reference for exploring the pathway of polysaccharide synthesis and metabolic regulation. KEY POINTS: •UGT88A1 plays an important role in the growth, stress response, and polysaccharide synthesis in G. frondosa. •UGT88A1 affected the monosaccharide composition, surface morphology and antioxidant activity of G. frondosa polysaccharides. •UGT88A1 regulated the mRNA expression of genes related to polysaccharide synthesis and cell wall integrity.
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Affiliation(s)
- Jian Li
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Bao-Xin Wang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Jie Zhang
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Na Han
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Shu-Ting Liu
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Wen-Ji Geng
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Shi-Ru Jia
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Yan-Ru Li
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Quan Gan
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Pei-Pei Han
- State Key Laboratory of Food Nutrition and Safety, Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, College of Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China.
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16
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Cui FJ, Yang YM, Sun L, Zan XY, Sun WJ, Zeb U. Grifola frondosa polysaccharides: A review on structure/activity, biosynthesis and engineering strategies. Int J Biol Macromol 2024; 257:128584. [PMID: 38056754 DOI: 10.1016/j.ijbiomac.2023.128584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 11/17/2023] [Accepted: 12/01/2023] [Indexed: 12/08/2023]
Abstract
Polysaccharides are the main polymers in edible fungi Grifola frondosa, playing a crucial role in the physiology and representing the healthy benefits for humans. Recent efforts have well elucidated the fine structures and biological functions of G. frondosa polysaccharides. The recently-rapid developments and increasing availability in fungal genomes also accelerated the better understanding of key genes and pathways involved in biosynthesis of G. frondosa polysaccharides. Herein, we provide a brief overview of G. frondosa polysaccharides and their activities, and comprehensively outline the complex process, genes and proteins corresponding to G. frondosa polysaccharide biosynthesis. The regulation strategies including strain improvement, process optimization and genetic engineering were also summarized for maximum production of G. frondosa polysaccharides. Some remaining unanswered questions in describing the fine synthesis machinery were also pointed out to open up new avenues for answering the structure-activity relationship and improving polysaccharide biosynthesis in G. frondosa. The review hopefully presents a reasonable full picture of activities, biosynthesis, and production regulation of polysaccharide in G. frondosa.
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Affiliation(s)
- Feng-Jie Cui
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China; Jiangxi Provincial Engineering and Technology Center for Food Additives Bio-production, Dexing 334221, PR China.
| | - Yu-Meng Yang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Lei Sun
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Xin-Yi Zan
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Wen-Jing Sun
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China; Jiangxi Provincial Engineering and Technology Center for Food Additives Bio-production, Dexing 334221, PR China
| | - Umar Zeb
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, PR China
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17
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Kachrimanidou V, Papadaki A, Papapostolou H, Alexandri M, Gonou-Zagou Z, Kopsahelis N. Ganoderma lucidum Mycelia Mass and Bioactive Compounds Production through Grape Pomace and Cheese Whey Valorization. Molecules 2023; 28:6331. [PMID: 37687160 PMCID: PMC10489755 DOI: 10.3390/molecules28176331] [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: 07/23/2023] [Revised: 08/11/2023] [Accepted: 08/23/2023] [Indexed: 09/10/2023] Open
Abstract
Numerous compounds obtained from the medicinal mushroom Ganoderma lucidum have evidenced renowned bioactive characteristics. Controlled fermentation to generate fungal mycelia confers several advantages, specifically when the valorization of agro-industrial streams as fermentation feedstocks is included. Submerged fermentation of a newly isolated Greek strain of G. lucidum was performed using conventional synthetic media and, also, grape pomace extract (GPE) and cheese whey permeate (CWP) under static and shaking conditions. Under shaking conditions, maximum biomass with GPE and supplementation with organic nitrogen reached 17.8 g/L. The addition of an elicitor in CWP resulted in a significant improvement in biomass production that exceeded synthetic media. Overall, agitation demonstrated a positive impact on biomass productivity and, therefore, on process optimization. Crude intracellular and extracellular polysaccharides were extracted and evaluated regarding antioxidant activity and polysaccharide and protein content. FTIR analysis confirmed the preliminary chemical characterization of the crude extracts. This study introduces the design of a bioprocessing scenario to utilize food industry by-products as onset feedstocks for fungal bioconversions to obtain potential bioactive molecules within the concept of bioeconomy.
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Affiliation(s)
- Vasiliki Kachrimanidou
- Department of Food Science and Technology, Ionian University, Argostoli, 28100 Kefalonia, Greece; (V.K.); (A.P.)
| | - Aikaterini Papadaki
- Department of Food Science and Technology, Ionian University, Argostoli, 28100 Kefalonia, Greece; (V.K.); (A.P.)
| | - Harris Papapostolou
- Department of Food Science and Technology, Ionian University, Argostoli, 28100 Kefalonia, Greece; (V.K.); (A.P.)
| | - Maria Alexandri
- Department of Food Science and Technology, Ionian University, Argostoli, 28100 Kefalonia, Greece; (V.K.); (A.P.)
| | - Zacharoula Gonou-Zagou
- Department of Ecology and Systematics, Faculty of Biology, National and Kapodistrian University of Athens, 15784 Athens, Greece
| | - Nikolaos Kopsahelis
- Department of Food Science and Technology, Ionian University, Argostoli, 28100 Kefalonia, Greece; (V.K.); (A.P.)
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Zhou J, Sun J, Ullah M, Wang Q, Zhang Y, Cao G, Chen L, Ullah MW, Sun S. Polyethylene terephthalate hydrolysate increased bacterial cellulose production. Carbohydr Polym 2022; 300:120301. [DOI: 10.1016/j.carbpol.2022.120301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 10/28/2022] [Accepted: 10/31/2022] [Indexed: 11/06/2022]
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19
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Xiang Q, Zhang H, Chen X, Hou S, Gu Y, Yu X, Zhao K, Zhang X, Ma M, Chen Q, Petri P, Chen X. Enhanced Effects of Iron on Mycelial Growth, Metabolism and In Vitro Antioxidant Activity of Polysaccharides from Lentinula edodes. Bioengineering (Basel) 2022; 9:bioengineering9100581. [PMID: 36290549 PMCID: PMC9598118 DOI: 10.3390/bioengineering9100581] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/12/2022] [Accepted: 10/14/2022] [Indexed: 11/17/2022] Open
Abstract
The polysaccharides found in Lentinula edodes have a variety of medicinal properties, such as anti-tumor and anti-viral effects, but their content in L. edodes sporophores is very low. In this study, Fe2+ was added to the liquid fermentation medium of L. edodes to analyze its effects on mycelial growth, polysaccharide and enzyme production, gene expression, and the activities of enzymes involved in polysaccharide biosynthesis, and in vitro antioxidation of polysaccharides. The results showed that when 200 mg/L of Fe2+ was added, with 7 days of shaking at 150 rpm and 3 days of static culture, the biomass reached its highest value (0.28 mg/50 mL) 50 days after the addition of Fe2+. Besides, Fe2+ addition also enhanced intracellular polysaccharide (IPS) and exopolysaccharide (EPS) productions, the levels of which were 2.98- and 1.79-fold higher than the control. The activities of the enzymes involved in polysaccharides biosynthesis, including phosphoglucomutase (PGM), phosphoglucose isomerase (PGI), and UDPG-pyrophosphorylase (UGP) were also increased under Fe2+ addition. Maximum PGI activity reached 1525.20 U/mg 30 days after Fe2+ addition, whereas PGM and UGP activities reached 3607.05 U/mg and 3823.27 U/mg 60 days after Fe2+ addition, respectively. The Pearson correlation coefficient showed a strong correlation (p < 0.01) between IPS production and PGM and UGP activities. The corresponding coding genes of the three enzymes were also upregulated. When evaluating the in vitro antioxidant activities of polysaccharides, EPS from all Fe2+-treated cultures exhibited significantly better capacity (p < 0.05) for scavenging -OH radicals. The results of the two-way ANOVA indicated that the abilities of polysaccharides to scavenge O2− radicals were significantly (p < 0.01) affected by Fe2+ concentration and incubation time. These results indicated that the addition of iron provided a good way to achieve desirable biomass, polysaccharide production, and the in vitro antioxidation of polysaccharides from L. edodes.
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Affiliation(s)
- Quanju Xiang
- College of Resource, Sichuan Agricultural University, Chengdu 611130, China
- Correspondence: ; Tel.: +86-28-8629-0982
| | - Huijuan Zhang
- College of Resource, Sichuan Agricultural University, Chengdu 611130, China
| | - Xiaoqian Chen
- College of Resource, Sichuan Agricultural University, Chengdu 611130, China
| | - Shiyao Hou
- College of Resource, Sichuan Agricultural University, Chengdu 611130, China
| | - Yunfu Gu
- College of Resource, Sichuan Agricultural University, Chengdu 611130, China
| | - Xiumei Yu
- College of Resource, Sichuan Agricultural University, Chengdu 611130, China
| | - Ke Zhao
- College of Resource, Sichuan Agricultural University, Chengdu 611130, China
| | - Xiaoping Zhang
- College of Resource, Sichuan Agricultural University, Chengdu 611130, China
| | - Menggen Ma
- College of Resource, Sichuan Agricultural University, Chengdu 611130, China
| | - Qiang Chen
- College of Resource, Sichuan Agricultural University, Chengdu 611130, China
| | - Penttinen Petri
- College of Resource, Sichuan Agricultural University, Chengdu 611130, China
| | - Xiaoqiong Chen
- Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
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Fu X, Zan XY, Sun L, Tan M, Cui FJ, Liang YY, Meng LJ, Sun WJ. Functional Characterization and Structural Basis of the β-1,3-Glucan Synthase CMGLS from Mushroom Cordyceps militaris. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:8725-8737. [PMID: 35816703 DOI: 10.1021/acs.jafc.2c03410] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
β-1,3-Glucan synthases play key roles in glucan synthesis, cell wall assembly, and growth of fungi. However, their multi-transmembrane domains (over 14 TMHs) and large molecular masses (over 100 kDa) significantly hamper understanding of their catalytic characteristics and mechanisms. In the present study, the 5841-bp gene CMGLS encoding the 221.7 kDa membrane-bound β-1,3-glucan synthase CMGLS in Cordyceps militaris was cloned, identified, and structurally analyzed. CMGLS was partially purified with a specific activity of 87.72 pmol/min/μg, a purification fold of 121, and a yield of 10.16% using a product-entrapment purification method. CMGLS showed a strict specificity to UDP-glucose with a Km value of 84.28 μM at pH 7.0 and synthesized β-1,3-glucan with a maximum degree of polymerization (DP) of 70. With the assistance of AlphaFold and molecular docking, the 3D structure of CMGLS and its binding features with substrate UDP-glucose were proposed for the first time to our knowledge. UDP-glucose potentially bound to at least 11 residues via hydrogen bonds, π-stacking ,and salt bridges, and Arg 1436 was predicted as a key residue directly interacting with the moieties of glucose, phosphate, and the ribose ring on UDP-glucose. These findings would open an avenue to recognize and understand the glucan synthesis process and catalytic mechanism of β-1,3-glucan synthases in mushrooms.
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Affiliation(s)
- Xin Fu
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, P.R. China
| | - Xin-Yi Zan
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, P.R. China
| | - Lei Sun
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, P.R. China
| | - Ming Tan
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, P.R. China
| | - Feng-Jie Cui
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, P.R. China
- Jiangxi Provincial Engineering and Technology Center for Food Additives Bio-production, Dexing 334221, P.R. China
| | - Ying-Ying Liang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, P.R. China
| | - Li-Juan Meng
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, P.R. China
| | - Wen-Jing Sun
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, P.R. China
- Jiangxi Provincial Engineering and Technology Center for Food Additives Bio-production, Dexing 334221, P.R. China
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Biogenic synthesis of zinc oxide nanoparticles using mushroom fungus Cordyceps militaris: Characterization and mechanistic insights of therapeutic investigation. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Influence of the Carbon and Nitrogen Sources on Diabolican Production by the Marine Vibrio diabolicus Strain CNCM I-1629. Polymers (Basel) 2022; 14:polym14101994. [PMID: 35631877 PMCID: PMC9145141 DOI: 10.3390/polym14101994] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 05/09/2022] [Accepted: 05/11/2022] [Indexed: 02/05/2023] Open
Abstract
Recent advances in glycobiotechnology show that bacterial exopolysaccharides (EPS) presenting glycosaminoglycan (GAG)-like properties can provide a valuable source of bio-active macromolecules for industrial applications. The HE800 EPS, named diabolican, is a marine-derived anionic high-molecular-weight polysaccharide produced by Vibrio diabolicus CNCM I-1629 which displays original structural features close to those of hyaluronic acid. We investigated the impact of carbon and nitrogen substrates on both Vibrio diabolicus growth and diabolican production. Both substrates were screened by a one-factor-at-a-time method, and experimental designs were used to study the effect of glucose, mannitol, and ammonium acetate various concentrations. Results showed that the medium composition affected not only the bacterium growth and EPS yield, but also the EPS molecular weight (MW). EPS yields of 563 and 330 mg L−1 were obtained in the presence of 69.3 g L−1 glucose and 24.6 g L−1 mannitol, respectively, both for 116.6 mM ammonium acetate. MW was the highest, with 69.3 g L−1 glucose and 101.9 mM ammonium acetate (2.3 × 106 g mol−1). In parallel, the bacterial maximum specific growth rate was higher when both carbon and nitrogen substrate concentrations were low. This work paves the way for the optimization of marine exopolysaccharide production of great interest in the fields of human health and cosmetics.
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Le TH, Thi Tran TV, Tran VK, Vu Ho XA, Tran TM, Chau Nguyen DG, Chuong Nguyen TH, Varma RS, Trinh TK, Ho TT, Hac Nguyen TB, Ahamad T, Nguyen CC, Le QV. Structural Characterization of Mannoglucan Isolated from Ophiocordyceps sobolifera and Its Antioxidant Activities. ACS OMEGA 2022; 7:9397-9405. [PMID: 35350314 PMCID: PMC8945084 DOI: 10.1021/acsomega.1c06651] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 03/02/2022] [Indexed: 06/14/2023]
Abstract
A novel polysaccharide structure (PS-T80) was collected from Ophiocordyceps sobolifera biomass and characterized via a combination of chemical and spectral analyses. Employing high-performance gel permeation chromatography (HPGPC), the average molecular weight is proven to be 7.4 × 104 Da. Furthermore, a sugar composition analysis of the obtained polysaccharide suggests two main sugars, β-d-glucose and α-d-mannose, at a molar ratio of 2:1, respectively, in the backbone. The structure analysis unveils that PS-T80 is a mannoglucan, possessing the repeating unit of [→3)-β-d-Glcp-(1 → 3)-α-d-Manp-(1 → 3)-β-d-Glcp-(1→] n . Such a configuration could be considered a novel polysaccharide. Impressively, in vitro antioxidant tests revealed that PS-T80 has a promising antioxidant activity. These results demonstrate that the obtained PS is a potential bioactive material for biomedical applications.
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Affiliation(s)
- Trung Hieu Le
- Faculty
of Chemistry, Hue University of Sciences,
Hue University, Thua Thien
Hue 530000, Vietnam
| | - Thi Van Thi Tran
- Faculty
of Chemistry, Hue University of Sciences,
Hue University, Thua Thien
Hue 530000, Vietnam
| | - Van Khoa Tran
- Faculty
of Chemistry, Hue University of Sciences,
Hue University, Thua Thien
Hue 530000, Vietnam
| | - Xuan Anh Vu Ho
- Faculty
of Chemistry, Hue University of Sciences,
Hue University, Thua Thien
Hue 530000, Vietnam
| | - Thanh Minh Tran
- Faculty
of Chemistry, Hue University of Sciences,
Hue University, Thua Thien
Hue 530000, Vietnam
| | - Dang Giang Chau Nguyen
- Faculty
of Chemistry, Hue University of Sciences,
Hue University, Thua Thien
Hue 530000, Vietnam
| | - Thi Hong Chuong Nguyen
- Institute
of Research and Development, Duy Tan University, Da Nang 550000, Vietnam
- Faculty
of Environmental and Chemical Engineering, Duy Tan University, Da Nang 550000, Vietnam
| | - Rajender S. Varma
- Regional
Centre of Advanced Technologies and Materials, Palacký University in Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Tam Kiet Trinh
- Institute
of Microbiology and Biotechnologv, Hanoi
National University, Hanoi 100000, Vietnam
| | - Thanh-Tam Ho
- Institute
for Global Health Innovations, Duy Tan University, Da Nang 550000, Vietnam
- Faculty of Pharmacy, Duy Tan University, Da Nang 550000, Vietnam
| | | | - Tansir Ahamad
- Department
of Chemistry, College of Science, King Saud
University, Riyadh 11451, Saudi Arabia
| | - Chinh Chien Nguyen
- Institute
of Research and Development, Duy Tan University, Da Nang 550000, Vietnam
- Faculty
of Environmental and Chemical Engineering, Duy Tan University, Da Nang 550000, Vietnam
| | - Quyet Van Le
- Department
of Materials Science and Engineering, Institute of Green Manufacturing
Technology, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic
of Korea
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Wang Y, Chen J, Han J, Yang Z, Zhu J, Ren A, Shi L, Yu H, Zhao M. Cloning and characterization of phosphoglucose isomerase in Lentinula edodes. J Basic Microbiol 2022; 62:740-749. [PMID: 35199357 DOI: 10.1002/jobm.202100598] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 01/17/2022] [Accepted: 02/05/2022] [Indexed: 02/06/2023]
Abstract
Phosphoglucose isomerase (PGI) is a key enzyme that participates in polysaccharide synthesis, which is responsible for the interconversion of glucose-6-phosphate (G-6-P) and fructose-6-phosphate (F-6-P), but there is little research focusing on its role in fungi, especially in higher basidiomycetes. The pgi gene was cloned from Lentinula edodes and named lepgi. Then, the lepgi-silenced strains were constructed by RNA interference. In this study, we found that lepgi-silenced strains had significantly less biomass than the wild-type (WT) strain. Furthermore, the extracellular polysaccharide (EPS) and intracellular polysaccharide (IPS) levels increased 1.5- to 3-fold and 1.5-fold, respectively, in lepgi-silenced strains. Moreover, the cell wall integrity in the silenced strains was also altered, which might be due to changes in the compounds and structure of the cell wall. The results showed that compared to WT, silencing lepgi led to a significant decrease of approximately 40% in the β-1,3-glucan content, and there was a significant increase of 2-3-fold in the chitin content. These findings provide support for studying the biological functions of lepgi in L. edodes.
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Affiliation(s)
- Yunxiao Wang
- Key Laboratory of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, P.R. China
| | - Juhong Chen
- Key Laboratory of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, P.R. China
| | - Jing Han
- Key Laboratory of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, P.R. China
| | - Zhengyan Yang
- Key Laboratory of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, P.R. China
| | - Jing Zhu
- Key Laboratory of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, P.R. China
| | - Ang Ren
- Key Laboratory of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, P.R. China
| | - Liang Shi
- Key Laboratory of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, P.R. China
| | - Hanshou Yu
- Key Laboratory of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, P.R. China
| | - Mingwen Zhao
- Key Laboratory of Microbiological Engineering of Agricultural Environment, Ministry of Agriculture, Department of Microbiology, College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, P.R. China
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Anthocyanin extract from Lycium ruthenicum enhanced production of biomass and polysaccharides during submerged fermentation of Agaricus bitorquis (Quél.) Sacc. Chaidam. Bioprocess Biosyst Eng 2021; 44:2303-2313. [PMID: 34296328 PMCID: PMC8463342 DOI: 10.1007/s00449-021-02605-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 06/21/2021] [Indexed: 02/03/2023]
Abstract
Agaricus bitorquis (Quél.) Sacc. Chaidam (ABSC) is a wild edible fungus uniquely found in the Tibet Plateau. ABSC is rich in polysaccharides that are considered biologically active. This study aimed to determine the feasibility of enhancing exopolysaccharide (EPS) production by ABSC in shake flask culture by supplementing the fermentation medium with anthocyanin extract. Different concentrations of Lycium ruthenicum Murr. (LRM) anthocyanin crude extract were tested on ABSC fermentation. The activity of phosphoglucose isomerase (PGI), phosphoglucose mutase (PGM), and phosphomannose isomerase (PMI), enzymes presumably involved in EPS synthesis by ABSC, was determined. ABSC transcriptomic profile in response to the presence of anthocyanins during fermentation was also investigated. LRM anthocyanin crude extract (0.06 mg/mL) was most effective in increasing EPS content and mycelial biomass (by 208.10% and 105.30%, respectively, P < 0.01). The activity of PGI, PGM, and PMI was increased in a medium where LRM anthocyanin extract and its main components (proanthocyanidins and petunia anthocyanin) were added. RNA-Seq analysis showed that 349 genes of ABSC were differentially expressed during fermentation in the medium containing anthocyanin extract of LRM; 93 genes were up-regulated and 256 genes down-regulated. From gene ontology enrichment analysis, differentially expressed genes were mostly assigned to carbohydrate metabolism and signal transduction categories. Collectively, LRM anthocyanins extract positively affected EPS production and mycelial biomass during ABSC fermentation. Our study provides a novel strategy for improving EPS production and mycelial growth during ABSC liquid submerged fermentation.
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He H, Li Y, Fang M, Li T, Liang Y, Mei Y. Carbon Source Affects Synthesis, Structures, and Activities of Mycelial Polysaccharides from Medicinal Fungus Inonotus obliquus. J Microbiol Biotechnol 2021; 31:855-866. [PMID: 33879638 PMCID: PMC9705997 DOI: 10.4014/jmb.2102.02006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 04/16/2021] [Accepted: 04/19/2021] [Indexed: 12/15/2022]
Abstract
The effects of various carbon sources on mycelial growth and polysaccharide synthesis of the medicinal fungus Inonotus obliquus in liquid fermentation were investigated. After 12-d fermentation, mycelial biomass, polysaccharide yield, and polysaccharide content were significantly higher in Glc+Lac group (glucose and lactose used as combined carbon source) than in other groups. Crude polysaccharides (CIOPs) and the derivative neutral polysaccharides (NIOPs) were obtained from mycelia fermented using Glc, fructose (Fru), Lac, or Glc+Lac as carbon source. Molecular weights of four NIOPs (termed as NIOPG, NIOPF, NIOPL, and NIOPGL) were respectively 780.90, 1105.00, 25.32, and 10.28 kDa. Monosaccharide composition analyses revealed that NIOPs were composed of Glc, Man, and Gal at different molar ratios. The NIOPs were classified as α-type heteropolysaccharides with 1→2, 1→3, 1→4, 1→6 linkages in differing proportions. In in vitro cell proliferation assays, viability of RAW264.7 macrophages was more strongly enhanced by NIOPL or NIOPGL than by NIOPG or NIOPF, and proliferation of HeLa or S180 tumor cells was more strongly inhibited by NIOPG or NIOPGL than by NIOPF or NIOPL, indicating that immune-enhancing and anti-tumor activities of NIOPs were substantially affected by carbon source. qRT-PCR analysis revealed that expression levels of phosphoglucose isomerase (PGI) and UDP-Glc 4-epimerase (UGE), two key genes involved in polysaccharide synthesis, varied depending on carbon source. Our findings, taken together, clearly demonstrate that carbon source plays an essential role in determining structure and activities of I. obliquus polysaccharides by regulating expression of key genes in polysaccharide biosynthetic pathway.
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Affiliation(s)
- Huihui He
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, P.R. China
| | - Yingying Li
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, P.R. China
| | - Mingyue Fang
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, P.R. China
| | - Tiantian Li
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, P.R. China
| | - Yunxiang Liang
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, P.R. China
| | - Yuxia Mei
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, P.R. China,Corresponding author Phone: +27-87287705 E-mail:
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Wang Y, Yang X, Chen P, Yang S, Zhang H. Homologous overexpression of genes in Cordyceps militaris improves the production of polysaccharides. Food Res Int 2021; 147:110452. [PMID: 34399454 DOI: 10.1016/j.foodres.2021.110452] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 05/03/2021] [Accepted: 05/23/2021] [Indexed: 11/15/2022]
Abstract
The maximum yield of EPS produced by mutant CM-pgm-H was 4.63 ± 0.23 g/L, whereas the yield of wild-type strain was 3.43 ± 0.26 g/L. In addition, the data obtained in the present study indicated that the yield of EPS produced by the engineered strain treated with the co-overexpression of phosphoglucomutase and UDP-glucose 6-dehydrogenase genes achieved 6.11 ± 0.21 g/L, which was increased by 78.13% compared with that by the wild-type strain. CM-pgm-H obtained the highest EPS content than that of gk, ugp, and ugdh mutants. This result indicated that the content of protein phosphoglucomutase was an important influencing factor on the CP production of C. militaris. Furthermore, the EPS production of CM-ugdh-pgm-M was significantly improved by 1.78-fold by co-overexpression. Therefore, our engineering strategies will play an important role in the development of C. militaris for the sustainable production of Cordyceps polysaccharides.
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Affiliation(s)
- Yifeng Wang
- The College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Xi Yang
- The College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Ping Chen
- The College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China
| | - Shengli Yang
- The College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, People's Republic of China.
| | - Hui Zhang
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, People's Republic of China.
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Gong M, Zhang H, Wu D, Zhang Z, Zhang J, Bao D, Yang Y. Key metabolism pathways and regulatory mechanisms of high polysaccharide yielding in Hericium erinaceus. BMC Genomics 2021; 22:160. [PMID: 33676419 PMCID: PMC7937317 DOI: 10.1186/s12864-021-07480-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 02/25/2021] [Indexed: 12/23/2022] Open
Abstract
Background Hericium erinaceus, a rare edible and medicine fungus, is widely used in the food and medical field. Polysaccharides from H. erinaceus are the main bioactive compound that exert high bioactive value in the medical and healthcare industries. Results The genome of H. erinaceus original strain HEA was reported 38.16 Mb, encoding 9780 predicted genes by single-molecule, real-time sequencing technology. The phylogenomic analysis showed that H. erinaceus had the closest evolutionary affinity with Dentipellis sp. The polysaccharide content in the fermented mycelia of mutated strains HEB and HEC, which obtained by ARTP mutagenesis in our previous study, was improved by 23.25 and 47.45%, and a new β-glucan fraction with molecular weight 1.056 × 106 Da was produced in HEC. Integrative analysis of transcriptome and proteomics showed the upregulation of the carbohydrate metabolism pathway modules in HEB and HEC might lead to the increased production of glucose-6P and promote the repeating units synthesis of polysaccharides. qPCR and PRM analysis confirmed that most of the co-enriched and differentially co-expressed genes involved in carbohydrate metabolism shared a similar expression trend with the transcriptome and proteome data in HEB and HEC. Heatmap analysis showed a noticeably decreased protein expression profile of the RAS-cAMP-PKA pathway in HEC with a highly increased 47.45% of polysaccharide content. The S phase progression blocking experiment further verified that the RAS-cAMP-PKA pathway’s dysfunction might promote high polysaccharide and β-glucan production in the mutant strain HEC. Conclusions The study revealed the primary mechanism of the increased polysaccharide synthesis induced by ARTP mutagenesis and explored the essential genes and pathways of polysaccharide synthesis. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-07480-x.
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Affiliation(s)
- Ming Gong
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, National Engineering Research Center of Edible Fungi, Key Laboratory of Edible Fungi Resources and Utilization (South), Ministry of Agriculture, the People's Republic of China, No.1000, Jinqi Road, Shanghai, 201403, China
| | - Henan Zhang
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, National Engineering Research Center of Edible Fungi, Key Laboratory of Edible Fungi Resources and Utilization (South), Ministry of Agriculture, the People's Republic of China, No.1000, Jinqi Road, Shanghai, 201403, China
| | - Di Wu
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, National Engineering Research Center of Edible Fungi, Key Laboratory of Edible Fungi Resources and Utilization (South), Ministry of Agriculture, the People's Republic of China, No.1000, Jinqi Road, Shanghai, 201403, China
| | - Zhong Zhang
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, National Engineering Research Center of Edible Fungi, Key Laboratory of Edible Fungi Resources and Utilization (South), Ministry of Agriculture, the People's Republic of China, No.1000, Jinqi Road, Shanghai, 201403, China
| | - Jinsong Zhang
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, National Engineering Research Center of Edible Fungi, Key Laboratory of Edible Fungi Resources and Utilization (South), Ministry of Agriculture, the People's Republic of China, No.1000, Jinqi Road, Shanghai, 201403, China
| | - Dapeng Bao
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, National Engineering Research Center of Edible Fungi, Key Laboratory of Edible Fungi Resources and Utilization (South), Ministry of Agriculture, the People's Republic of China, No.1000, Jinqi Road, Shanghai, 201403, China
| | - Yan Yang
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, National Engineering Research Center of Edible Fungi, Key Laboratory of Edible Fungi Resources and Utilization (South), Ministry of Agriculture, the People's Republic of China, No.1000, Jinqi Road, Shanghai, 201403, China.
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Zhang M, Fan S, Hao M, Hou H, Zheng H, Darwesh OM. Improving the production of fungal exopolysaccharides with application of repeated batch fermentation technology coupling with foam separation in the presence of surfactant. Process Biochem 2021. [DOI: 10.1016/j.procbio.2020.06.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Sun H, Yu X, Li T, Zhu Z. Structure and hypoglycemic activity of a novel exopolysaccharide of Cordyceps militaris. Int J Biol Macromol 2020; 166:496-508. [PMID: 33129900 DOI: 10.1016/j.ijbiomac.2020.10.207] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 10/23/2020] [Accepted: 10/26/2020] [Indexed: 01/05/2023]
Abstract
A novel neutral exopolysaccharide (EPS-III) was isolated from culture broth of Cordyceps militaris (C. militaris). The EPS-III was a homogeneous polysaccharide with Mw of 1.56 × 103 kDa. The yield of EPS-III from culture broth was 123.2 ± 3.1 mg/L and the sugar content was 93.32 ± 0.87%. The backbone of EPS-III was mainly consisted of →4)-α-D-Galp-(1→, while →3, 6)-α-D-Manp-(1→, →4)-α-D-Manp-(1→, →3)-β-D-Galp-(1→ and →3)-α-D-Glcp-(1→ were distributed in the backbone or in the branch chains. The EPS-III had helix structure when dissolved in weak alkaline solution. It also had branched and intertwined form on the surface. The inhibition of α-glucosidase significantly increased as the increase of purity of exopolysaccharides. The EPS-III had effective inhibition on the α-glucosidase with dose-effect relationship. Besides, the results of hypoglycemic activity analysis in vivo indicated that EPS-III can alleviate weight loss, reduce plasma glucose concentration, improve glucose tolerance, protect immune organs and repair dyslipidemia to relieve diabetes in STZ-induced diabetic mice. The manuscript first studied the hypoglycemic activity of exopolysaccharide of by C. militaris, proving and promoting the application value of culture broth. The structure characterization of EPS-III laid experimental foundations on the exploration of structure-activity relationship.
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Affiliation(s)
- HuiQing Sun
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, PR China; Key Laboratory of Food Nutrition and Safety, Ministry of Education, Tianjin University of Science and Technology, Tianjin 300457, PR China; College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - XiaoFeng Yu
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, PR China; Key Laboratory of Food Nutrition and Safety, Ministry of Education, Tianjin University of Science and Technology, Tianjin 300457, PR China; College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Ting Li
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, PR China; Key Laboratory of Food Nutrition and Safety, Ministry of Education, Tianjin University of Science and Technology, Tianjin 300457, PR China; College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - ZhenYuan Zhu
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, PR China; Key Laboratory of Food Nutrition and Safety, Ministry of Education, Tianjin University of Science and Technology, Tianjin 300457, PR China; College of Food Science and Engineering, Tianjin University of Science and Technology, Tianjin 300457, PR China.
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Ren YY, Sun PP, Li HR, Zhu ZY. Effects of Na2SeO3 on growth, metabolism, antioxidase and enzymes involved in polysaccharide synthesis of Cordyceps militaris. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.06.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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33
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Enzymatic characterization and validation of gene expression of phosphoglucomutase from Cordyceps militaris. Biotechnol Lett 2020; 43:177-192. [PMID: 32757151 DOI: 10.1007/s10529-020-02981-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Accepted: 07/29/2020] [Indexed: 10/23/2022]
Abstract
The purification and characterization of PGM (Phosphoglucomutase) from Cordyceps militaris (C. militaris) was investigated. PGM was purified using a combination of ultrafiltration, salting-out and ion exchange chromatography resulting in 4.23-fold enhancement of activity with a recovery of 20.01%. Molecular mass was 50.01 kDa by SDS-PAGE. The optimal activity was achieved at pH 7.5 and 30 °C with NADPH as substrate. The results showed that SDS, DTT Li+, Cu2+, Na+, Mn2+ and Al3+ were effective PGM inhibitors; whereas glycerol, Zn2+, Mg2+, Ca2+, Fe2+ and Fe3+ could enhance the activity of PGM, and the Km and Vmax values were 11.62 mmol/L and 416.67 U/mL, respectively. At the same time, qRT-PCR was used to test the changes of mRNA transcription level of PGM gene encoding under two fermentation conditions: basic medium and optimized medium. The relative quantitative results of PGM target genes resulting in 2.60-fold enhancement than the control group.
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Yang L, Li G, Chai Z, Gong Q, Guo J. Synthesis of cordycepin: Current scenario and future perspectives. Fungal Genet Biol 2020; 143:103431. [PMID: 32610064 DOI: 10.1016/j.fgb.2020.103431] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 04/29/2020] [Accepted: 05/29/2020] [Indexed: 02/06/2023]
Abstract
Cordyceps genus, such as C. militaris and C. kyushuensis, is a source of a rare traditional Chinese medicine that has been used for the treatment of numerous chronic and malignant diseases. Cordycepin, 3'-deoxyadenosine, is a major active compound found in most Cordyceps. Cordycepin exhibits a variety of biological activities, including anti-tumor, immunomodulation, antioxidant, and anti-aging, among others, which could be applied in health products, medicine, cosmeceutical etc. fields. This review focuses on the synthesis methods for cordycepin. The current methods for cordycepin synthesis involve chemical synthesis, microbial fermentation, in vitro synthesis and biosynthesis; however, some defects are unavoidable and the production is still far from the demand of cordycepin. For the future study of cordycepin synthesis, based on the illumination of cordycepin biosynthesis pathway, genetical engineering of the Cordyceps strain or introducing microbes by virtue of synthetic biology will be the great potential strategies for cordycepin synthesis. This review will aid the future synthesis of the valuable cordycepin.
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Affiliation(s)
- Liyang Yang
- School of Basic Medical Sciences, Shanxi University of Chinese Medicine, Jinzhong 030619, Shanxi, PR China
| | - Guilan Li
- School of Basic Medical Sciences, Shanxi University of Chinese Medicine, Jinzhong 030619, Shanxi, PR China
| | - Zhi Chai
- School of Basic Medical Sciences, Shanxi University of Chinese Medicine, Jinzhong 030619, Shanxi, PR China
| | - Qiang Gong
- School of Basic Medical Sciences, Shanxi University of Chinese Medicine, Jinzhong 030619, Shanxi, PR China
| | - Jianquan Guo
- School of Public Health, Shanxi Medical University, Taiyuan 030001, Shanxi, PR China.
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Liu Y, Li Y, Zhang H, Li C, Zhang Z, Liu A, Chen H, Hu B, Luo Q, Lin B, Wu W. Polysaccharides from Cordyceps miltaris cultured at different pH: Sugar composition and antioxidant activity. Int J Biol Macromol 2020; 162:349-358. [PMID: 32574745 DOI: 10.1016/j.ijbiomac.2020.06.182] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 06/13/2020] [Accepted: 06/18/2020] [Indexed: 12/23/2022]
Abstract
In the study, the β-glucan content, the primary structure and the antioxidant capacity of polysaccharides in Cordyceps militaris cultivated with different initial growth pH were evaluated. Meanwhile, the mechanism of β-glucan biosynthesis was investigated by RNA-Seq. Based on the results, C. militaris growing at an initial growth pH of 5-7 (CMsA) was distinguished from C. militaris growing at an initial growth pH of 8-9 (CMsB) and their unigenes showed the comparable expression. The mean of β-glucan content of CMsB group was 32.7% (w/w), 10% higher than that of CMsA. The results of RNA-seq showed 1088 differentially expressed genes between CMsA and CMsB groups. Furthermore, oxidative phosphorylation-related Gene ontology terms were up-regulated in CMsB groups. In addition, the results of structural analysis (FTIR spectrum, monosaccharide composition, periodate oxidation) and bioactivity evaluation speculated that C. militaris polysaccharides possessed higher β-(1 → 6)-glucan content and antioxidant activities in CMsB groups.
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Affiliation(s)
- Yuntao Liu
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China.
| | - Yiwen Li
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China
| | - Huilan Zhang
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China
| | - Cheng Li
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China
| | - Zhiqing Zhang
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China
| | - Aiping Liu
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China
| | - Hong Chen
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China
| | - Bin Hu
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China
| | - Qingying Luo
- College of Food Science, Sichuan Agricultural University, Yaan 625014, China
| | - Bokun Lin
- School of Public Health, Guangdong Medical University, Dongguan 523808, China
| | - Wenjuan Wu
- College of Science, Sichuan Agricultural University, Yaan 625014, China
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Sun Y, Zhang X, Zhang L, Huang Y, Yang Z, Montagnes D. UVB Radiation Suppresses Antigrazer Morphological Defense in Scenedesmus obliquus by Inhibiting Algal Growth and Carbohydrate-Regulated Gene Expression. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:4495-4503. [PMID: 32108484 DOI: 10.1021/acs.est.0c00104] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Solar ultraviolet-B (UVB) radiation reaching the earth's surface is increasing due to stratospheric ozone depletion. How the elevated UVB affects the trophic interactions is critical for predicting the ecosystem functioning under this global-scale stressor. Usually, inducible defenses in phytoplankton stabilize community dynamics within aquatic environments. To assess the effects of elevated UVB on induced defense, we examined the changes in antigrazer colony formation in Scenedesmus obliquus under environmentally relevant UVB. S. obliquus exposed to Daphnia infochemicals consistently formed multicelled colonies, traits confirmed to be adaptive under predation risk. However, the suppressed photochemical activity and the metabolic cost from colony formation resulted in the severer reductions in algal growth by UVB under predation risk. The transcriptions of key enzyme-encoding genes, regulating the precursor synthesis during polysaccharide production, were also inhibited by UVB. Combination of the reduced production of daughter cells and the ability of daughter cells to remain attached, the antigrazing colony formation was interrupted, leading to the dominant morphs of algal population shifting from larger-sized colonies to smaller ones at raised UVB. The present study revealed that elevated UVB will not only reduce the phytoplankton growth but also increase their vulnerability to predation, probably leading to potential shifts in plankton food webs.
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Affiliation(s)
- Yunfei Sun
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Biological Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, China
| | - Xingxing Zhang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Biological Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, China
| | - Lu Zhang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Biological Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, China
| | - Yuan Huang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Biological Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, China
| | - Zhou Yang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Biological Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, China
| | - David Montagnes
- Institute of Integrative Biology, Biosciences Building, University of Liverpool, Liverpool L69 7ZB, U.K
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Effect of sodium and calcium on polysaccharide production and the activities of enzymes involved in the polysaccharide synthesis of Lentinus edodes. AMB Express 2020; 10:47. [PMID: 32170413 PMCID: PMC7070116 DOI: 10.1186/s13568-020-00985-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 03/03/2020] [Indexed: 11/15/2022] Open
Abstract
Lentinan is a Lentinus edodes secondary metabolite that can regulate human immune function, but yields are low. Here, the effects of Ca2+ and Na+ on L. edodes lentinan content were investigated. Metal ion concentrations and induction times were optimized according to mycelial biomass, and intracellular polysaccharide (IPS), extracellular polysaccharide (EPS), and total polysaccharide (TPS) content. The activities and gene expression of phospho-glucose isomerase (PGI), phosphoglucomutase (PGM), and UDP-glcpyrophosphorylase (UGP) were also measured. Ca2+ and Na+ concentration and induction time affected biomass, IPS, and EPS concentrations. Na+ increased EPS, IPS and TPS, while Ca2+ increased biomass, IPS, and TPS. During fermentation, mycelial biomass varied greatly under Ca2+ induction, while IPS, EPS and TPS varied greatly under Na+ induction. PGM and UGP activities increased in the presence of Na+, while PGI increased with Ca2+. Compared to control samples, pgi and pgm expression under Na+ was greater at days 45 and 60, respectively, while under Ca2+, ugp expression was greater at day 45. IPS content correlated significantly with enzyme activity, while EPS correlated with PGM activity. Our data contributes to better understanding how Na+ and Ca2+ affect mycelial growth and secondary metabolite production, and of polysaccharide biosynthesis mechanisms of L. edodes.
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Transcriptome analysis of polysaccharide-based microbial flocculant MBFA9 biosynthesis regulated by nitrogen source. Sci Rep 2020; 10:2918. [PMID: 32075995 PMCID: PMC7031244 DOI: 10.1038/s41598-020-59114-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 01/21/2020] [Indexed: 11/09/2022] Open
Abstract
Microbial flocculant (MBF), an environmentally friendly water treatment agent, can be widely used in various water treatments. However, its use is limited by low yield and high cost. This problem can be solved by clarifying its biosynthesis mechanism and regulating it. Paenibacillus shenyangensis A9, a flocculant-producing bacterium, was used to produce polysaccharide-type MBFA9 by regulating the nitrogen source (nitrogen adequacy/nitrogen deficiency). In this study, RNA-Seq high-throughput sequencing technology and bioinformatic approaches were used to investigate the fermentation and biosynthesis of polysaccharide-type MBFA9 by regulating the nitrogen source (high nitrogen/low nitrogen) in the flocculant-producing bacteria Paenibacillus shenyangensis A9. Differentially expressed genes, functional clustering, and functional annotation of key genes were assessed. Then the MBFA9 biosynthesis and metabolic pathway were reconstructed. Our results showed that when cultured under different nitrogen conditions, bacterial strain A9 had a greater ability to synthesize polysaccharide-type MBFA9 under low nitrogen compared to high nitrogen conditions, with the yield of MBFA9 reaching 4.2 g/L at 36 h of cultivation. The quality of transcriptome sequencing data was reliable, with a matching rate of 85.38% and 85.48% when L36/H36 was mapped to the reference genome. The total expressed genes detected were 4719 and 4730, with 265 differentially expressed genes. The differentially expressed genes were classified into 3 categories: molecular function (MF), cell component (CC), and biological process (BP), and can be further divided into 22 subcategories. There were 192 upregulated genes and 73 downregulated genes, with upregulation being predominant under low nitrogen. UDP-Gal, UDP-Glc, UDP-GlcA, and UDP-GlcNAc, which are in the polysaccharide metabolic pathway, could all be used as precursors for MBFA9 biosynthesis, and murA, wecB, pgm, galU/galF, fcl, gmd, and glgC were the main functional genes capable of affecting the growth of bacteria and the biosynthesis of MBF. Results from this study provide evidence that high-level expression of key genes in MBFA9 biosynthesis, regulation, and control can achieve MBFA9 directional synthesis for large-scale applications.
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Shi H, Zhang M, Bhandari B, Wang Y, Yi S. Effects of superfine grinding on the properties and qualities of
Cordyceps militaris
and its spent substrate. J FOOD PROCESS PRES 2019. [DOI: 10.1111/jfpp.14169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Hao Shi
- State Key Laboratory of Food Science and Technology Jiangnan University Wuxi China
| | - Min Zhang
- State Key Laboratory of Food Science and Technology Jiangnan University Wuxi China
- International Joint Laboratory on Food Safety Jiangnan University Wuxi China
| | - Bhesh Bhandari
- School of Agriculture and Food Sciences University of Queensland Brisbane QLD Australia
| | - Yuchuan Wang
- State Key Laboratory of Food Science and Technology Jiangnan University Wuxi China
| | - Sifu Yi
- Yandi Biological Engineering Co., Ltd Changde China
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Lou HW, Zhao Y, Tang HB, Ye ZW, Wei T, Lin JF, Guo LQ. Transcriptome Analysis of Cordyceps militaris Reveals Genes Associated With Carotenoid Synthesis and Identification of the Function of the Cmtns Gene. Front Microbiol 2019; 10:2105. [PMID: 31552008 PMCID: PMC6746990 DOI: 10.3389/fmicb.2019.02105] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 08/27/2019] [Indexed: 11/13/2022] Open
Abstract
Cordyceps militaris, a valuable edible and medicinal fungus, has attracted increasing attention because of its various bioactive ingredients. However, the biosynthetic pathway of C. militaris carotenoids is still unknown due to lack of transcriptome information. To uncover genes related to the biosynthesis of C. militaris carotenoids, the transcriptomes of mycelia CM10_D cultured under dark conditions and mycelia CM10_L cultured under light exposure conditions were sequenced. Compared with mycelia CM10_D, 866 up-regulated genes and 856 down-regulated genes were found in mycelia CM10_L. Gene ontology (GO) analysis of differentially expressed genes (DEGs) indicated that DEGs were mainly classified into the “metabolic process,” “membrane,” and “catalytic activity” terms. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis of DEGs suggested that DEGs were mainly enriched in “metabolic pathways,” “MAPK signaling pathway-yeast,” and “biosynthesis of secondary metabolites.” In addition, the carotenoid content of the Cmtns gene deletion mutant (ΔCmtns) was significantly lower than that of the wild-type C. militaris CM10, while the carotenoid content of the complementary strain (ΔCmtns-c) of the Cmtns gene was not significantly different from that of C. militaris CM10, suggesting that the Cmtns gene significantly affected the biosynthesis of carotenoids in C. militaris. These results potentially pave the way for revealing the biosynthetic pathway of carotenoids and improving carotenoids production in C. militaris.
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Affiliation(s)
- Hai-Wei Lou
- Department of Bioengineering, College of Food Science, South China Agricultural University, Guangzhou, China.,College of Food Science and Technology, Henan University of Technology, Zhengzhou, China
| | - Yu Zhao
- College of Food Science and Technology, Henan University of Technology, Zhengzhou, China
| | - Hong-Biao Tang
- Department of Bioengineering, College of Food Science, South China Agricultural University, Guangzhou, China
| | - Zhi-Wei Ye
- Department of Bioengineering, College of Food Science, South China Agricultural University, Guangzhou, China
| | - Tao Wei
- Department of Bioengineering, College of Food Science, South China Agricultural University, Guangzhou, China
| | - Jun-Fang Lin
- Department of Bioengineering, College of Food Science, South China Agricultural University, Guangzhou, China.,Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, China
| | - Li-Qiong Guo
- Department of Bioengineering, College of Food Science, South China Agricultural University, Guangzhou, China.,Research Center for Micro-Ecological Agent Engineering and Technology of Guangdong Province, Guangzhou, China
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Advance in Cordyceps militaris (Linn) Link polysaccharides: Isolation, structure, and bioactivities: A review. Int J Biol Macromol 2019; 132:906-914. [DOI: 10.1016/j.ijbiomac.2019.04.020] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 03/26/2019] [Accepted: 04/03/2019] [Indexed: 01/01/2023]
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Tao TL, Cui FJ, Chen XX, Sun WJ, Huang DM, Zhang J, Yang Y, Wu D, Liu WM. Improved mycelia and polysaccharide production of Grifola frondosa by controlling morphology with microparticle Talc. Microb Cell Fact 2018; 17:1. [PMID: 29306327 PMCID: PMC5756420 DOI: 10.1186/s12934-017-0850-2] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Accepted: 12/15/2017] [Indexed: 11/17/2022] Open
Abstract
Background Mushroom showed pellet, clump and/or filamentous mycelial morphologies during submerged fermentation. Addition of microparticles including Talc (magnesium silicate), aluminum oxide and titanium oxide could control mycelial morphologies to improve mycelia growth and secondary metabolites production. Here, effect of microparticle Talc (45 μm) addition on the mycelial morphology, fermentation performance, monosaccharide compositions of polysaccharides and enzymes activities associated with polysaccharide synthesis in G. frondosa was well investigated to find a clue of the relationship between polysaccharide biosynthesis and morphological changes. Results Addition of Talc decreased the diameter of the pellets and increased the percentage of S-fraction mycelia. Talc gave the maximum mycelial biomass of 19.25 g/L and exo-polysaccharide of 3.12 g/L at 6.0 g/L of Talc, and mycelial polysaccharide of 0.24 g/g at 3.0 g/L of Talc. Talc altered the monosaccharide compositions/percentages in G. frondosa mycelial polysaccharide with highest mannose percentage of 62.76 % and lowest glucose percentage of 15.22 % followed with the corresponding changes of polysaccharide-synthesis associated enzymes including lowest UDP-glucose pyrophosphorylase (UGP) activity of 91.18 mU/mg and highest UDP-glucose dehydrogenase (UGDG) and GDP-mannose pyrophosphorylase (GMPPB) activities of 81.45 mU/mg and 93.15 mU/mg. Conclusion Our findings revealed that the presence of Talc significantly changed the polysaccharide production and sugar compositions/percentages in mycelial and exo-polysaccharides by affecting mycelial morphology and polysaccharide-biosynthesis related enzymes activities of G. frondosa.
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Affiliation(s)
- Ting-Lei Tao
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Feng-Jie Cui
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China. .,Jiangxi Provincial Engineering and Technology Center for Food Additives Bio-production, Dexing, 334221, People's Republic of China.
| | - Xiao-Xiao Chen
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Wen-Jing Sun
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China.,Jiangxi Provincial Engineering and Technology Center for Food Additives Bio-production, Dexing, 334221, People's Republic of China
| | - Da-Ming Huang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Jinsong Zhang
- National Engineering Research Center of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, People's Republic of China
| | - Yan Yang
- National Engineering Research Center of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, People's Republic of China
| | - Di Wu
- National Engineering Research Center of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, People's Republic of China
| | - Wei-Min Liu
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
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Wang Q, Wang F, Xu Z, Ding Z. Bioactive Mushroom Polysaccharides: A Review on Monosaccharide Composition, Biosynthesis and Regulation. Molecules 2017; 22:E955. [PMID: 28608797 PMCID: PMC6152739 DOI: 10.3390/molecules22060955] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Accepted: 06/05/2017] [Indexed: 11/22/2022] Open
Abstract
Mushrooms are widely distributed around the world and are heavily consumed because of their nutritional value and medicinal properties. Polysaccharides (PSs) are an important component of mushrooms, a major factor in their bioactive properties, and have been intensively studied during the past two decades. Monosaccharide composition/combinations are important determinants of PS bioactivities. This review summarizes: (i) monosaccharide composition/combinations in various mushroom PSs, and their relationships with PS bioactivities; (ii) possible biosynthetic pathways of mushroom PSs and effects of key enzymes on monosaccharide composition; (iii) regulation strategies in PS biosynthesis, and prospects for controllable biosynthesis of PSs with enhanced bioactivities.
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Affiliation(s)
- Qiong Wang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China.
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China.
| | - Feng Wang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Zhenghong Xu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China.
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China.
| | - Zhongyang Ding
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China.
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China.
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Han PP, Yao SY, Guo RJ, Yan RR, Wu YK, Shen SG, Jia SR. Influence of culture conditions on extracellular polysaccharide production and the activities of enzymes involved in the polysaccharide synthesis of Nostoc flagelliforme. RSC Adv 2017. [DOI: 10.1039/c7ra07982f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Important enzymes influencing the production ofNostoc flagelliformeEPS were investigated under different culture conditions.
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Affiliation(s)
- Pei-pei Han
- Key Laboratory of Industrial Fermentation Microbiology
- Ministry of Education
- College of Biotechnology
- Tianjin University of Science and Technology
- Tianjin 300457
| | - Shun-yu Yao
- Key Laboratory of Industrial Fermentation Microbiology
- Ministry of Education
- College of Biotechnology
- Tianjin University of Science and Technology
- Tianjin 300457
| | - Rong-jun Guo
- Key Laboratory of Industrial Fermentation Microbiology
- Ministry of Education
- College of Biotechnology
- Tianjin University of Science and Technology
- Tianjin 300457
| | - Rong-rong Yan
- Key Laboratory of Industrial Fermentation Microbiology
- Ministry of Education
- College of Biotechnology
- Tianjin University of Science and Technology
- Tianjin 300457
| | - Yi-kai Wu
- Key Laboratory of Industrial Fermentation Microbiology
- Ministry of Education
- College of Biotechnology
- Tianjin University of Science and Technology
- Tianjin 300457
| | - Shi-gang Shen
- Key Laboratory of Industrial Fermentation Microbiology
- Ministry of Education
- College of Biotechnology
- Tianjin University of Science and Technology
- Tianjin 300457
| | - Shi-ru Jia
- Key Laboratory of Industrial Fermentation Microbiology
- Ministry of Education
- College of Biotechnology
- Tianjin University of Science and Technology
- Tianjin 300457
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