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Wang Q, Zhu J, Wang Y, Yun J, Zhang Y, Zhao F. Serine Rejuvenated Degenerated Volvariella volvacea by Enhancing ROS Scavenging Ability and Mitochondrial Function. J Fungi (Basel) 2024; 10:540. [PMID: 39194866 DOI: 10.3390/jof10080540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2024] [Revised: 07/21/2024] [Accepted: 07/29/2024] [Indexed: 08/29/2024] Open
Abstract
Serine is a functional amino acid that effectively regulates the physiological functions of an organism. This study investigates the effects of adding exogenous serine to a culture medium to explore a feasible method for the rejuvenation of V. volvacea degenerated strains. The tissue isolation subcultured strains T6, T12, and T19 of V. volvacea were used as test strains, and the commercially cultivated strain V844 (T0) was used as a control. The results revealed that the addition of serine had no significant effect on non-degenerated strains T0 and T6, but could effectively restore the production characteristics of degenerated strains T12 and T19. Serine increased the biological efficiency of T12 and even helped the severely degenerated T19 to regrow its fruiting body. Moreover, exogenous serine up-regulated the expression of some antioxidant enzyme genes, improved antioxidase activity, reduced the accumulation of reactive oxygen species (ROS), lowered malondialdehyde (MDA) content, and restored mitochondrial membrane potential (MMP) and mitochondrial morphology. Meanwhile, serine treatment increased lignocellulase and mycelial energy levels. These findings form a theoretical basis and technical support for the rejuvenation of V. volvacea degenerated strains and other edible fungi.
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Affiliation(s)
- Qiaoli Wang
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China
- Kangle County Special Agricultural Development Center, Linxia 731599, China
| | - Jianing Zhu
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China
| | - Yonghui Wang
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China
| | - Jianmin Yun
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China
| | - Yubin Zhang
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China
| | - Fengyun Zhao
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China
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2
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Wang Q, Wang J, Li M, Liu Y, Gao L. Structural characterization and anti-oxidant activity of polysaccharide HVP-1 from Volvariella volvacea. Int J Biol Macromol 2024; 261:129672. [PMID: 38278397 DOI: 10.1016/j.ijbiomac.2024.129672] [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: 09/23/2023] [Revised: 01/19/2024] [Accepted: 01/20/2024] [Indexed: 01/28/2024]
Abstract
In this study, a novel homogeneous polysaccharide (HVP-1) was purified from the Volvariella volvacea. Its structural characteristics and anti-oxidant activity in vitro were further evaluated. The results revealed that HVP-1 was composed of mannose, glucose, galactose and arabinose in a molar ratio (mol %) of 55.37: 15.74: 25.20: 3.69. Its main chain consisted of →4)-β-D-Galp-(1→, →6)-α-D-Glcp-(1→, →3)-α-D-Glcp-(1→, →4)-β-D-Manp-(1→ and →3,6)-β-D-Manp-(1→. The branched structure α-L-Araf-(1→, →2)-β-D-Glcp-(1→ and →6)-β-D-Manp-(1→ were connected to →3,6)-β-D-Manp-(1→ through the O-3 position. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) showed that HVP-1 had porous sheet-like structure with a triple helix conformation. Anti-oxidant activity experiments showed that HVP-1 alleviated H2O2-induced oxidative damage by reducing the accumulation of reactive oxygen species, increasing the activity of related enzymes in cells, and activating the Nrf2/HO-1 signaling pathway. These results suggested that HVP-1 had the potential to be used as a natural anti-oxidant in functional foods and pharmaceuticals.
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Affiliation(s)
- Qilong Wang
- Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230601, China; Key Laboratory for Agricultural Products Processing of Anhui Province, Hefei University of Technology, Hefei 230009, China; School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China
| | - Junhui Wang
- Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230601, China; Key Laboratory for Agricultural Products Processing of Anhui Province, Hefei University of Technology, Hefei 230009, China; School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China.
| | - Mengxin Li
- Key Laboratory for Agricultural Products Processing of Anhui Province, Hefei University of Technology, Hefei 230009, China; School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China
| | - Yong Liu
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China
| | - Li Gao
- Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230601, China; Key Laboratory for Agricultural Products Processing of Anhui Province, Hefei University of Technology, Hefei 230009, China; School of Food and Biological Engineering, Hefei University of Technology, Hefei 230601, China.
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Wang J, Zhao C, Li P, Wang L, Li S. Structural Characteristics and Multiple Bioactivities of Volvariella volvacea Polysaccharide Extracts: The Role of Extractive Solvents. Foods 2023; 12:4357. [PMID: 38231875 DOI: 10.3390/foods12234357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 11/24/2023] [Accepted: 11/29/2023] [Indexed: 01/19/2024] Open
Abstract
The chemical structures and functional properties of plant-based polysaccharides are critically influenced by extractive solvents, but their roles are not clear. In this study, the structural characteristics and multiple bioactivities of Volvariella volvacea polysaccharides (VVPs) subjected to water (VVP-W), alkalis (sodium hydroxide, VVP-A), and acids (citric acid, VVP-C) as extractive solvents are investigated systematically. Of the above three polysaccharides, VVP-W exhibited the highest molecular weights, apparent viscosity, and viscoelastic properties. Functional analyses revealed that VVP-C had an excellent water-holding capacity, foaming properties, and emulsifying capacity, while VVP-A exhibited a promising oil-holding capacity. Moreover, VVP-C displayed strong inhibitory effects on α-amylase and α-glucosidase, which could be attributed to its content of total phenolics, proteins, and molecular weights. These findings have important implications for selecting the appropriate extraction techniques to obtain functional polysaccharides with targeted bioactive properties as food additives.
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Affiliation(s)
- Jun Wang
- School of Tourism and Cuisine, Yangzhou University, Yangzhou 225127, China
| | - Changyu Zhao
- School of Tourism and Cuisine, Yangzhou University, Yangzhou 225127, China
| | - Ping Li
- Key Laboratory of Functional Foods, Ministry of Agriculture and Rural Affairs, Guangdong Key Laboratory of Agricultural Products Processing, Sericultural & Agri-Food Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510610, China
| | - Lei Wang
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Songnan Li
- Joint International Research Laboratory of Agriculture, Agri-Product Safety of the Ministry of Education of China, Institutes of Agricultural Science and Technology Development, Yangzhou University, Yangzhou 225009, China
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Zhao F, Liu X, Chen C, Cheng Z, Wang W, Yun J. Successive mycelial subculturing decreased lignocellulase activity and increased ROS accumulation in Volvariella volvacea. Front Microbiol 2022; 13:997485. [PMID: 36187940 PMCID: PMC9520666 DOI: 10.3389/fmicb.2022.997485] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 08/25/2022] [Indexed: 11/23/2022] Open
Abstract
Strain degradation is a common problem in many artificially-cultivated edible mushrooms. As a fungus with poor tolerance to low-temperature, Volvariella volvacea cannot delay its degradation by long-term low temperature storage like other fungi, so its degradation is particularly severe, which hinders industrial applications. Periodic mycelial subculture is a common storage method for V. volvacea, but excessive subculturing can also lead to strain degeneration. After 20 months of continuous subculturing every 3 days, V. volvacea strains S1–S20 were obtained, and their characteristics throughout the subculture process were analyzed. With increasing number of subculture, the growth rate, mycelial biomass, the number of fruiting bodies and biological efficiency gradually decreased while the production cycle and the time to primordium formation was lengthened. Strains S13–S20, obtained after 13–20 months of mycelial subculturing, also lacked the ability to produce fruiting bodies during cultivation experiments. Determination of reactive oxygen species (ROS) content as well as enzyme activity showed that decreased lignocellulase activity, along with excessive accumulation of ROS, was concomitant with the subculture-associated degeneration of V. volvacea. Reverse transcription polymerase chain reaction (RT-PCR) was eventually used to analyze the gene expression for lignocellulase and antioxidant enzymes in subcultured V. volvacea strains, with the results found to be consistent with prior observations regarding enzyme activities. These findings could form the basis of further studies on the degeneration mechanism of V. volvacea and other fungi.
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Affiliation(s)
- Fengyun Zhao
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, China
- *Correspondence: Fengyun Zhao,
| | - Xiaoxia Liu
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, China
- Higher Vocational College, Shaanxi institute of international trade and Commerce, Xi’an, China
| | - Chao Chen
- Sinograin Chengdu Storage Research Institute Co. Ltd, Chengdu, China
| | - Zhihong Cheng
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, China
| | - Wenpei Wang
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, China
| | - Jianmin Yun
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, China
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Li P, Hu C, Li Y, Ge L, Wu G, Lv B, Jiang W, Xi D. The cold - resistance mechanism of a mutagenic Volvariella volvacea strain VH3 with outstanding traits revealed by transcriptome profiling. BMC Microbiol 2021; 21:336. [PMID: 34876003 PMCID: PMC8653554 DOI: 10.1186/s12866-021-02396-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Accepted: 11/22/2021] [Indexed: 11/14/2022] Open
Abstract
Background The straw mushroom (Volvariella volvacea) is one of the important vegetables that is popular for its delicious taste. However, the straw mushroom is sensitive to low temperature, resulting in economic loss during transportation and storage. We obtained a novel straw mushroom strain, named VH3, via ultraviolet mutagenesis. Results Our study revealed that VH3 exhibited high cold resistance compared to an ordinary straw mushroom cultivar, V23. We found that the electrolyte leakages of VH3 were always significantly lower than that of V23 treated with 4 °C for 0 h, 2 h,4 h, 8 h, 16 h, and 24 h. Before cold treatment (0 h), there were no difference of MDA contents, SOD activities, and CAT activities between VH3 and V23. At the late stage (8 h, 26 h, and 24 h) of cold treatment, the MDA contents of VH3 were lower while both the SOD and CAT activities were higher than those of V23. To investigate the potential mechanisms of VH3 cold resistance, we performed transcriptome sequencing to detect the transcriptome profiling of VH3 and V23 after 0 h and 4 h cold treatment. Transcriptome sequencing revealed that 111 differentially expressed genes (DEG) between V23 (0 h) and VH3 (0 h) (V23–0_vs_VH3–0), consisting 50 up-regulated and 61 down-regulated DEGs. A total of 117 DEGs were obtained between V23 (4 h) and VH3(4 h) (V23–4_vs_VH3–4), containing 94 up-regulated and 23 down-regulated DEGs. Among these DEGs, VVO_00021 and VVO_00017 were up-regulated while VVO_00003, VVO_00004, VVO_00010, and VVO_00030 were down-regulated in V23–0_vs_VH3–0 and VH3–4_vs_V23–4. KEGG and GO analysis revealed that the 6 DEGs were annotated to pathways related to cold stress. Besides, the GA3 content was also decreased in VH3. Conclusions Collectively, our study first revealed that the increased cold resistance of VH3 might be caused by the expression change of VVO_00003, VVO_00004, VVO_00017, VVO_00021, and VVO_00030, and decreased GA3. Supplementary Information The online version contains supplementary material available at 10.1186/s12866-021-02396-8.
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Affiliation(s)
- Peng Li
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201106, China
| | - Cong Hu
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201106, China
| | - Yujie Li
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201106, China
| | - Lei Ge
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201106, China
| | - Guogan Wu
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201106, China
| | - Beibei Lv
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201106, China
| | - Wei Jiang
- Shanghai Key Laboratory of Agricultural Genetics and Breeding, Biotechnology Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201106, China
| | - Dandan Xi
- Shanghai Key Laboratory of Protected Horticultural Technology, Protected Horticultural Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201106, China.
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Hou LJ, Li ZP, Li CT, Lin JS, Ma L, Jiang N, Qu SX, Li HP, Li Y. Enhanced Enzymatic Hydrolysis of Cellulose From Substrate and Indole-3-Acetic Acid Content-During the Fruiting Body Differentiation Stage by Sodium Acetate Addition. FRONTIERS IN FUNGAL BIOLOGY 2021; 2:746313. [PMID: 37744121 PMCID: PMC10512216 DOI: 10.3389/ffunb.2021.746313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 10/14/2021] [Indexed: 09/26/2023]
Abstract
Volvariella volvacea, with high commercial, nutritional and medicinal value, is widely cultivated in tropical and subtropical regions. The effects of supplementation on mushroom yield has been studied. We showed that the optimal application of sodium acetate (NaAc) was spray application of a 0.08% concentration during the substrate mixing stage which could increase yields by up to 89.16% and enhance the enzymatic hydrolysis of cellulose and hemicellulose from the substrate. For most enzymes tested maximum activity occurred during the fruiting body growth and development stage, which led to degradation of the substrate, increasing the available nutrients for mycelial propagation and fruiting body growth and development. Meanwhile, NaAc also significantly increased the indole-3-acetic acid (IAA) content in the early fruiting body development stage of V. volvacea, It was observed that IAA promotes not only plant primordium differentiation; but also the primordium differentiation of edible fungi. Furthermore, treatments with three acetate salts had an increase of yield by 30.22% on average. The mechanisms by which NaAc application may improve the yield of V. volvacea are discussed.
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Affiliation(s)
- Li-juan Hou
- Engineering Research Center of Edible and Medicinal Fungi, Ministry of Education for Jilin Agricultural University, Jilin, China
- Institute of Vegetable Crop, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing, China
| | - Zheng-peng Li
- Key Laboratory of Edible Fungi Resources and Utilization (South), Ministry of Agriculture, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai, China
| | - Chang-tian Li
- Engineering Research Center of Edible and Medicinal Fungi, Ministry of Education for Jilin Agricultural University, Jilin, China
| | - Jin-sheng Lin
- Institute of Vegetable Crop, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing, China
| | - Lin Ma
- Institute of Vegetable Crop, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing, China
| | - Ning Jiang
- Institute of Vegetable Crop, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing, China
| | - Shao-xuan Qu
- Institute of Vegetable Crop, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing, China
| | - Hui-ping Li
- Institute of Vegetable Crop, Jiangsu Academy of Agricultural Sciences, Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing, China
| | - Yu Li
- Engineering Research Center of Edible and Medicinal Fungi, Ministry of Education for Jilin Agricultural University, Jilin, China
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González A, Cruz M, Losoya C, Nobre C, Loredo A, Rodríguez R, Contreras J, Belmares R. Edible mushrooms as a novel protein source for functional foods. Food Funct 2020; 11:7400-7414. [DOI: 10.1039/d0fo01746a] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Fast demographic growth has led to increasing interest in low-cost alternative protein sources to meet population needs.
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Affiliation(s)
- Abigail González
- Food Research Department
- Faculty of Chemistry
- Autonomous University of Coahuila
- Saltillo
- Mexico
| | - Mario Cruz
- Food Science and Technology Department
- Antonio Narro Autonomous Agrarian University
- Saltillo
- Mexico
| | - Carolina Losoya
- Food Research Department
- Faculty of Chemistry
- Autonomous University of Coahuila
- Saltillo
- Mexico
| | - Clarisse Nobre
- CEB – Centre of Biological Engineering
- University of Minho
- Braga
- Portugal
| | - Araceli Loredo
- Food Research Department
- Faculty of Chemistry
- Autonomous University of Coahuila
- Saltillo
- Mexico
| | - Rosa Rodríguez
- Food Research Department
- Faculty of Chemistry
- Autonomous University of Coahuila
- Saltillo
- Mexico
| | - Juan Contreras
- Food Research Department
- Faculty of Chemistry
- Autonomous University of Coahuila
- Saltillo
- Mexico
| | - Ruth Belmares
- Food Research Department
- Faculty of Chemistry
- Autonomous University of Coahuila
- Saltillo
- Mexico
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Sande D, Oliveira GPD, Moura MAFE, Martins BDA, Lima MTNS, Takahashi JA. Edible mushrooms as a ubiquitous source of essential fatty acids. Food Res Int 2019; 125:108524. [DOI: 10.1016/j.foodres.2019.108524] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 06/19/2019] [Accepted: 06/21/2019] [Indexed: 12/20/2022]
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Wang X, Liu S, Chen M, Yu C, Zhao Y, Yang H, Zha L, Li Z. Low Temperature (15 °C) Reduces Bacterial Diversity and Prolongs the Preservation Time of Volvariella volvacea. Microorganisms 2019; 7:microorganisms7100475. [PMID: 31635138 PMCID: PMC6843861 DOI: 10.3390/microorganisms7100475] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 10/16/2019] [Accepted: 10/18/2019] [Indexed: 12/14/2022] Open
Abstract
Straw mushroom (Volvariella volvacea) is the most commonly cultivated edible fungus in the world, but the challenges associated with the preservation have limited its marketability. Microbiology, especially bacteria, play a key role in the deterioration of food, this study aimed to reveal the succession of the bacterial community on the surfaces of V. volvacea fruit bodies under different temperature conditions. We amplified 16S rRNA genes of V4 regions, obtained the bacterial species information by using high-throughput sequencing technology, and analyzed the effects of environmental temperature and preservation time on bacterial communities. The relative abundances of Firmicutes, Bacilli, and Bacillales increased significantly when straw mushrooms began to rot. Furthermore, the relative abundances of Paenibacillus, Lysinibacillus and Solibacillus, which belong to Bacillales, increased with the decay of straw mushroom. The Shannon and Simpson indices of V. volvacea stored at 30 °C were significantly higher than those of V. volvacea stored at 15 °C, which indicates that a high temperature contributes to the improvement in the species diversity. According to the linear discriminant analysis (LDA) effect size (LEfSe) results, the number of biomarkers in the 30 °C group (32, 42.11%) was significantly higher than that in the 15 °C group (17, 22.37%), indicating that a high temperature has a clustering effect on some bacterial communities. A Spearman correlation analysis showed that Pseudomonas, Stenotrophomonas and Solibacillus promoted the decay of straw mushroom. In conclusion, a high temperature increases the bacterial diversity on the straw mushroom surfaces and has a clustering effect on the bacterial communities. The bacterial community consisting of Firmicutes, Bacilli, Bacillales, Paenibacillus, Lysinibacillus, Pseudomonas, Stenotrophomonas and Solibacillus could promote the decay of straw mushroom, so new preservation materials research can focus on inhibiting anaerobic and decay-causing bacteria to prolong preservation time.
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Affiliation(s)
- Xiuling Wang
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China.
- College of Life Sciences, Shihezi University, Shihezi 832003, China.
| | - Shunjie Liu
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China.
| | - Mingjie Chen
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China.
| | - Changxia Yu
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China.
| | - Yan Zhao
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China.
| | - Huanling Yang
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China.
| | - Lei Zha
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China.
| | - Zhengpeng Li
- Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China.
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Enhanced Ganoderic Acids Accumulation and Transcriptional Responses of Biosynthetic Genes in Ganoderma lucidum Fruiting Bodies by Elicitation Supplementation. Int J Mol Sci 2019; 20:ijms20112830. [PMID: 31185659 PMCID: PMC6600565 DOI: 10.3390/ijms20112830] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 06/06/2019] [Accepted: 06/07/2019] [Indexed: 02/07/2023] Open
Abstract
Ganoderic acids (GAs) are a type of highly oxygenated lanostane-type triterpenoids that are responsible for the pharmacological activities of Ganoderma lucidum. They have been investigated for their biological activities, including antibacterial, antiviral, antitumor, anti-HIV-1, antioxidation, and cholesterol reduction functions. Inducer supplementation is viewed as a promising technology for the production of GAs. This study found that supplementation with sodium acetate (4 mM) significantly increased the GAs content of fruiting bodies by 28.63% compared to the control. In order to explore the mechanism of ganoderic acid accumulation, the transcriptional responses of key GAs biosynthetic genes, including the acetyl coenzyme A synthase gene, and the expression levels of genes involved in calcineurin signaling and acetyl-CoA content have been analyzed. The results showed that the expression of three key GAs biosynthetic genes (hmgs, fps, and sqs) were significantly up-regulated. Analysis indicated that the acetate ion increased the expression of genes related to acetic acid assimilation and increased GAs biosynthesis, thereby resulting in the accumulation of GAs. Further investigation of the expression levels of genes involved in calcineurin signaling revealed that Na+ supplementation and the consequent exchange of Na+/Ca2+ induced GAs biosynthesis. Overall, this study indicates a feasible new approach of utilizing sodium acetate elicitation for the enhanced production of valuable GAs content in G. lucidum, and also provided the primary mechanism of GAs accumulation.
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Cui FJ, Qian LS, Sun WJ, Zhang JS, Yang Y, Li N, Zhuang HN, Wu D. Ultrasound-Assisted Extraction of Polysaccharides from Volvariella volvacea: Process Optimization and Structural Characterization. Molecules 2018; 23:E1706. [PMID: 30011781 PMCID: PMC6100287 DOI: 10.3390/molecules23071706] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 06/27/2018] [Accepted: 07/07/2018] [Indexed: 12/19/2022] Open
Abstract
The aims of the present study were to optimize the operational parameters to maximize the yield of ultrasound-assisted polysaccharide extraction from Volvariella volvacea (straw mushroom) fruiting bodies by using for the first time one-factor-at-a-time and three-level Box-Behnken factorial designs. A maximum polysaccharide yield of 8.28 ± 0.23% was obtained under the optimized conditions of ultrasound power of 175 W, extraction temperature of 57 °C, extraction time of 33 min, and the ratio of liquid to raw material of 25:1, respectively. Compared to the hot-water extraction, the ultrasound-assistance favored the extraction of polysaccharides from V. volvacea for its higher polysaccharide yield and efficiency. Further preliminary polysaccharide structural characterization indicated that ultrasound treatment affected the monosaccharide compositions and ratios, and molecular weight range of polysaccharides extracted from V. volvacea.
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Affiliation(s)
- Feng-Jie Cui
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
- Parchn Sodium Isovitamin C Co. Ltd., Dexing 334221, China.
| | - Li-Sun Qian
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Wen-Jing Sun
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
- Parchn Sodium Isovitamin C Co. Ltd., Dexing 334221, China.
| | - Jin-Song Zhang
- National Engineering Research Center of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China.
| | - Yan Yang
- National Engineering Research Center of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China.
| | - Na Li
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Hai-Ning Zhuang
- National Engineering Research Center of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China.
| | - Di Wu
- National Engineering Research Center of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China.
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