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Characterization of a Septobasidium sp. Associated with Felt Disease of Schisandra chinensis.

ABSTRACT: Extensive disease surveys performed during the summers of 2013 and 2014 in Schisandra chinensis orchards resulted in the finding of a Septobasidium sp. associated with felt disease. The fungus was characterized to be symbiotic with a scale insect (Pseudaulacaspis cockerelli). Morphological and molecular characteristics of the Septobasidium isolates were investigated. The isolates were morphologically and phylogenetically close to S. bogoriense. We tentatively describe this isolate as a Septobasidium sp., mainly because of the limited amount of information available on the internal transcribed spacer region of the ribosomal DNA of Septobasidium spp.

SUBMITTER: Choi IY

PROVIDER: S-EPMC4838593 | biostudies-literature | 2016 Mar

REPOSITORIES: biostudies-literature

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Characterization of a Septobasidium sp. Associated with Felt Disease of Schisandra chinensis.

Choi In-Young IY Lee Wang-Hyu WH Lee Jong-Jin JJ Park Mi-Jeong MJ Ko Jeong-Ae JA Choi Jeong-Ran JR Shin Hyeon-Dong HD

Mycobiology 20160331 1

Extensive disease surveys performed during the summers of 2013 and 2014 in Schisandra chinensis orchards resulted in the finding of a Septobasidium sp. associated with felt disease. The fungus was characterized to be symbiotic with a scale insect (Pseudaulacaspis cockerelli). Morphological and molecular characteristics of the Septobasidium isolates were investigated. The isolates were morphologically and phylogenetically close to S. bogoriense. We tentatively describe this isolate as a Septobasi ...[more]

PMID: 27103856

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Schisandra chinensis

Project description:Schisandra chinensis Organism overview

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Schisandra chinensis

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Schizandrol A: a lignan from Schisandra chinensis.

Project description:The title compound (systematic name1,2,3,10,11,12-hexa-meth-oxy-6,7-dimethyl-5,6,7,8-tetra-hydro-dibenzo[a,c]cyclo-oc-ten-6-ol), C(24)H(32)O(7), has a dibenzocyclo-octa-diene skeleton. There are three mol-ecules in the asymmetric unit, which are related by a pseudo-translation in the direction of the c axis. Nevertheless, the three mol-ecules differ in the torsion angle of one of the meth-oxy groups. The dihedral angles between the two aromatic rings are 62.39?(10), 62.65?(10) and 61.84?(10)° for the three mol-ecules. The crystal packing is stabilized by a series of O-H?O and C-H?O hydrogen bonds, as well as C-H?? inter-actions.

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Characterization and genetic analysis of the complete chloroplast genome of Schisandra chinensis (Magnoliaceae: Schisandra), an herbal medicine from China.

Project description:Schisandra chinensis is a deciduous woody vine plant that has been used in traditional medicine for thousands of years in China. In this study, we researched the complete chloroplast genome of S. chinensis. The complete chloroplast genome length is 147,779?bp, containing a large single-copy region (LSC) of 97,352bp, a small single-copy region (SSC) of 20,313?bp, and a pair of inverted repeat (IR) regions of 15,057?bp. The overall nucleotide composition is: A of 29.8%, T of 30.8%, C of 20.2%, and G of 19.2%, with a total GC-content of the chloroplast genome 39.4% and AT of 60.6%. Whole chloroplast genome of S. chinensis contains 126 genes, including 83 protein-coding genes (PCG), 35 transfer RNA (tRNAs) genes, and 8 ribosome RNA (rRNAs) genes. Phylogenetic and genetic analysis based on 30 herbal species confirmed the position of S. chinensis closely related to S. sphenanthera. The complete chloroplast genome of S. chinensis provides more molecular data for the genetic diversity and genetic evolutionary relationship of this species in China.

| S-EPMC7687546 | biostudies-literature

Targeted Lignan Profiling and Anti-Inflammatory Properties of Schisandra rubriflora and Schisandra chinensis Extracts.

Project description:Schisandra rubriflora is a dioecious plant of increasing importance due to its lignan composition, and therefore, possible therapeutic properties. The aim of the work was lignan profiling of fruits, leaves and shoots of female (F) and male (M) plants using UHPLC-MS/MS. Additionally, the anti-inflammatory activity of plant extracts and individual lignans was tested in vitro for the inhibition of 15-lipooxygenase (15-LOX), phospholipases A2 (sPLA?), cyclooxygenase 1 and 2 (COX-1; COX-2) enzyme activities. The extracts of fruits, leaves and shoots of the pharmacopoeial species, S. chinensis, were tested for comparison. Twenty-four lignans were monitored. Lignan contents in S. rubriflora fruit extracts amounted to 1055.65 mg/100 g DW and the dominant compounds included schisanhenol, aneloylgomisin H, schisantherin B, schisandrin A, gomisin O, angeloylgomisin O and gomisin G. The content of lignan in leaf extracts was 853.33 (F) and 1106.80 (M) mg/100 g DW. Shoot extracts were poorer in lignans-559.97 (F) and 384.80 (M) mg/100 g DW. Schisantherin B, schisantherin A, 6-O-benzoylgomisin O and angeloylgomisin H were the dominant compounds in leaf and shoot extracts. The total content of detected lignans in S. chinensis fruit, leaf and shoot extracts was: 1686.95, 433.59 and 313.83 mg/100 g DW, respectively. Gomisin N, schisandrin A, schisandrin, gomisin D, schisantherin B, gomisin A, angeloylgomisin H and gomisin J were the dominant lignans in S. chinensis fruit extracts were. The results of anti-inflammatory assays revealed higher activity of S. rubriflora extracts. Individual lignans showed significant inhibitory activity against 15-LOX, COX-1 and COX-2 enzymes.

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Inhibition of UDP-Glucuronosyltransferases (UGTs) Activity by constituents of Schisandra chinensis.

Project description:Structure-activity relationship for the inhibition of Schisandra chinensis's ingredients toward (Uridine-Diphosphate) UDP-glucuronosyltransferases (UGTs) activity was performed in the present study. In vitro incubation system was employed to screen the inhibition capability of S. chinensis's ingredients, and in silico molecular docking method was carried out to explain possible mechanisms. At 100 μM of compounds, the activity of UGTs was inhibited by less than 90% by schisandrol A, schisandrol B, schisandrin, schisandrin C, schisantherin A, gomisin D, and gomisin G. Schisandrin A exerted strong inhibition toward UGT1A1 and UGT1A3, with the residual activity to be 7.9% and 0% of control activity. Schisanhenol exhibited strong inhibition toward UGT2B7, with the residual activity to be 7.9% of control activity. Gomisin J of 100 μM inhibited 91.8% and 93.1% of activity of UGT1A1 and UGT1A9, respectively. Molecular docking prediction indicated different hydrogen bonds interaction resulted in the different inhibition potential induced by subtle structure alteration among schisandrin A, schisandrin, and schisandrin C toward UGT1A1 and UGT1A3: schisandrin A > schisandrin > schisandrin C. The detailed inhibition kinetic evaluation showed the strong inhibition of gomisin J toward UGT1A9 with the inhibition kinetic parameter (Ki ) to be 0.7 μM. Based on the concentrations of gomisin J in the plasma of the rats given with S. chinensis, high herb-drug interaction existed between S. chinensis and drugs mainly undergoing UGT1A9-mediated metabolism. In conclusion, in silico-in vitro method was used to give the inhibition information and possible inhibition mechanism for S. chinensis's components toward UGTs, which guide the clinical application of S. chinensis.

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Dibenzocyclooctadiene Lignans from Schisandra chinensis with Anti-Inflammatory Effects.

Project description:Schisandra chinensis (Schisandraceae) is a medicinal plant widely used in traditional Chinese medicine. Under the name Wu Wei Zi, it is used to treat many diseases, especially as a stimulant, adaptogen, and hepatoprotective. Dibenzocyclooctadiene lignans are the main compounds responsible for the effect of S. chinensis. As a part of ongoing studies to identify and evaluate anti-inflammatory natural compounds, we isolated a series of dibenzocyclooctadiene lignans and evaluated their biological activity. Furthermore, we isolated new sesquiterpene 7,7-dimethyl-11-methylidenespiro[5.5]undec-2-ene-3-carboxylic acid. Selected dibenzocyclooctadiene lignans were tested to assess their anti-inflammatory potential in LPS-stimulated monocytes by monitoring their anti-NF-κB activity, antioxidant activity in CAA assay, and their effect on gap junction intercellular communication in WB-ras cells. Some S. chinensis lignans showed antioxidant activity in CAA mode and affected the gap junction intercellular communication. The anti-inflammatory activity was proven for (-)-gomisin N, (+)-γ-schisandrin, rubrisandrin A, and (-)-gomisin J.

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The complete mitochondrial genome sequence of Schisandra chinensis (Austrobaileyales: Schisandraceae).

Project description:Chinese magnolia vine (Schisandra chinensis) is an economically important oriental medicinal plant that belongs to the Schisandraceae family. The complete mitochondrial genome sequence of S. chinensis was 946,141 bp in length. A total of 45 genes was annotated, including 30 protein-coding genes, 12 tRNA genes, and 3 rRNA genes. A phylogenetic tree based on the mitochondrial genome demonstrated that S. chinensis was most closely related to Schisandra sphenanthera of the Schisandraceae family.

| S-EPMC7687566 | biostudies-literature

Anti-Obesity Effect of α-Cubebenol Isolated from Schisandra chinensis in 3T3-L1 Adipocytes.

Project description:The efficacy of α-cubebenol isolated from Schisandra chinensis has been studied in several diseases, including cecal ligation, puncture challenge-induced sepsis, and degranulation of neutrophils. To identify the novel functions of α-cubebenol on lipid metabolism, alterations on the regulation of lipogenesis, lipolysis, and inflammatory response were observed in 3T3-L1 adipocytes treated with α-cubebenol. Most lipogenic targets, including lipid accumulation, level of lipogenic transcription factors, and expression of lipogenic regulators, were suppressed in MDI (3-isobutyl-1-methylxanthine, dexamethasone, and insulin)-stimulated 3T3-L1 adipocytes treated with α-cubebenol without significant cytotoxicity. In addition, similar inhibition effects were observed in the iNOS-induced COX-2 mediated pathway and NLRP3 inflammasome pathway of MDI-stimulated 3T3-L1 cells treated with α-cubebenol. Lipolytic targets, such as cAMP concentration, expression of adenylyl cyclase and PDE4, and their downstream signaling pathway, in MDI-stimulated 3T3-L1 cells were stimulated by the α-cubebenol treatment. The levels of transcription factors and related proteins for β-oxidation were significantly higher in the MDI + α-cubebenol treated group than in the MDI + Vehicle treated group. These results show that α-cubebenol has a novel role as a lipogenesis inhibitor, lipolysis and β-oxidation stimulator, and inflammasome suppressor in MDI-stimulated 3T3-L1 adipocytes.

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The Anti-colitis Effect of Schisandra chinensis Polysaccharide Is Associated With the Regulation of the Composition and Metabolism of Gut Microbiota.

Project description:Background: The pathogenesis of inflammatory bowel disease (IBD) is linked to an intricate association of environmental, microbial, and host-related factors. Polysaccharide affects host immunity by regulating the composition and metabolism of gut microbiota is the common mechanism of disease resistance. However, the efficacy and mechanism of Schisandra chinensis polysaccharide (SCP) in the treatment of inflammatory bowel disease have not been studied. Objective: To explore the effect and mechanism of SCP on dextran sodium sulfate (DSS) - induced ulcerative colitis (UC) in mice. Materials/Methods: In this study, we established a mouse model of UC, and used SCP for treatment intervention. The biochemical indexes related to inflammation were determined by ELISA kit, and the therapeutic effect of SCP on UC was clarified. Then, 16S rDNA sequencing was used to study the effect of SCP on the composition and diversity of gut microbiota. At the same time, GC-MS was used to determine the content of short chain fatty acids in intestinal contents. Finally, the relationship among gut microbiota, short chain fatty acids and inflammatory factors was analyzed, and to comprehensively explain the effect and mechanism of SCP on UC. Results: The results showed that SCP could significantly improve the physiological state of UC mice and regulate the level of inflammatory factors to normal levels. Meanwhile, SCP could significantly regulate the imbalance of gut microbiota and increase the content of SCFAs. In addition, the results of the correlation between gut microbiota and SCFAs showed that butyric acid, isobutyric acid and valeric acid had the highest correlation with gut microbiota. Conclusion: In conclusion, this research showed that SCP can inhibit inflammatory bowel disease by regulating the composition and metabolism of gut microbiota, and indicating that SCP may be used as adjuvant therapy for IBD patients.

| S-EPMC7609416 | biostudies-literature

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