1.Isolation and identification of endophytic fungi producing harpagoside and harpagide from Scrophularia ningpoensis.
Zhan-Yun SHEN ; Bo ZHU ; Quan-Long ZHANG ; Lu-Ping QIN
China Journal of Chinese Materia Medica 2019;44(10):2046-2050
The endophytic fungi from root,main stem,branch and leaf of Scrophularia ningpoensis were isolated from Zhejiang,whether these strains could yield harpagide or harpagoside were tested by HPLC and LC-MS. According to the morphological characteristic and the similarity of the nucleotide sequence of internal transcribed spacer( ITS) between r DNAs,the strains producing harpagide or harpagoside were identified. The results showed that 210 strains were isolated from the samples,which were classified into 9 orders,13 families and 17 genera by morphological study. Harpagide was detected in endogenous fungi ZJ17 and harpagoside was detected in endogenous fungi ZJ25 by HPLC coupled with LC-MS. ZJ17 was identified as Alternaria alternate and ZJ25 was identified as A.gaisen by its morphology and authenticated by ITS( ITS4 and ITS5 regions and the intervening 5. 8 S rDNA region).
China
;
DNA, Fungal
;
genetics
;
DNA, Ribosomal Spacer
;
genetics
;
Endophytes
;
classification
;
metabolism
;
Fungi
;
classification
;
metabolism
;
Glycosides
;
biosynthesis
;
Iridoid Glycosides
;
metabolism
;
Pyrans
;
metabolism
;
Scrophularia
;
microbiology
2.Antioxidant and Anti-inflammatory Capacity of Ferulic Acid Released from Wheat Bran by Solid-state Fermentation of Aspergillus niger.
Zhi Na YIN ; Wen Jia WU ; Chong Zhen SUN ; Hui Fan LIU ; Wen Bo CHEN ; Qi Ping ZHAN ; Zhuo Gui LEI ; Xuan XIN ; Juan Juan MA ; Kun YAO ; Tian MIN ; Meng Meng ZHANG ; Hui WU
Biomedical and Environmental Sciences 2019;32(1):11-21
OBJECTIVE:
A strain of Aspergillus niger (A. niger), capable of releasing bound phenolic acids from wheat bran, was isolated. This strain was identified by gene sequence identification. The antioxidant and anti-inflammatory capacity of ferulic acid released from wheat bran by this A. niger strain (FA-WB) were evaluated.
METHODS:
Molecular identification techniques based on PCR analysis of specific genomic sequences were conducted; antioxidant ability was examined using oxygen radical absorbance capacity (ORAC), cellular antioxidant activity (CAA) assays, and erythrocyte hemolysis assays. RAW264.7 cells were used as a model to detect anti-inflammatory activity.
RESULTS:
The filamentous fungal isolate was identified to be A. niger. ORAC and CAA assay showed that FA-WB had better antioxidant activity than that of the ferulic acid standard. The erythrocyte hemolysis assay results suggested that FA-WB could attenuate AAPH-induced oxidative stress through inhibition of reactive oxy gen species (ROS) generation. FA-WB could significantly restore the AAPH-induced increase in intracellular antioxidant enzyme activities to normal levels as well as inhibit the intracellular malondialdehyde formation. TNF-a, IL-6, and NO levels indicated that FA-WB can inhibit the inflammation induced by lipopolysaccharide (LPS).
CONCLUSION
Ferulic acid released from wheat bran by a new strain of A. niger had good anti-inflammatory activity and better antioxidant ability than standard ferulic acid.
Animals
;
Anti-Inflammatory Agents
;
metabolism
;
pharmacology
;
Antioxidants
;
metabolism
;
pharmacology
;
Aspergillus niger
;
genetics
;
isolation & purification
;
metabolism
;
Coumaric Acids
;
metabolism
;
pharmacology
;
DNA, Fungal
;
analysis
;
Dietary Fiber
;
microbiology
;
Erythrocytes
;
drug effects
;
metabolism
;
Fermentation
;
Hep G2 Cells
;
Humans
;
Interleukin-6
;
metabolism
;
Lipopolysaccharides
;
pharmacology
;
Mice
;
RAW 264.7 Cells
;
Sheep
;
Tumor Necrosis Factor-alpha
;
metabolism
3.Alternaria yunnanensis sp. nov., a New Alternaria Species Causing Foliage Spot of Rubber Tree in China
Zhi Ying CAI ; Yi Xian LIU ; Yu Ping SHI ; Li Ming DAI ; Lan Lan LI ; Hong Jun MU ; Mei Lin LV ; Xiao Yong LIU
Mycobiology 2019;47(1):66-75
A new species of Alternaria causing leaf spots on the rubber tree (Hevea brasiliensis) in Yunnan, China, was isolated, examined, and illustrated. Morphologically, it belongs to the section Porri of Alternaria, which produces relatively large conidia and a simple or branched, filamentous long beak. It is, however, characterized by conidiophores gradually enlarging near the apex into a clavate conidiogenous cell and long ellipsoid to obclavate, smooth-walled conidia with a long filamentous beak. Molecular phylogenetic analyses based on ITS rDNA, GAPDH, and TEF1-alpha sequences demonstrate that the phytopathogen falls in the clade of the section Porri, being most closely related to A. sidae, A. sennae, A. deseriticola, A. cyamopsidis, A. rostellata, A. nitrimali, A. crassa, and A. thunbergiae.
Acanthaceae
;
Accidental Falls
;
Alternaria
;
Animals
;
Ascomycota
;
Beak
;
China
;
Classification
;
DNA, Ribosomal
;
Hevea
;
Rubber
;
Spores, Fungal
4.Cladophialophora lanosa sp. nov., a New Species Isolated from Soil
Kallol DAS ; Seung Yeol LEE ; Hee Young JUNG
Mycobiology 2019;47(2):173-179
Cladophialophora is characterized by simple hyphomycetes with brown hyphae that give rise to branched chains of pale brown conidia and shows affinities with the Herpotrichiellaceae. A fungal strain belonging to the genus Cladophialophora was isolated from soil in Daegu, Korea. This strain produces numerous greenish to dark black lanose aerial mycelia with hair like structures. It is morphological similar to C. chaetospira, C. inabaensis, and C. multiseptata; however, the conidiophores and conidia sizes of the newly isolated strain (KNU16-032) are clearly different from them. The novelty of the strain was also confirmed based on phylogenetic analysis using the data sets of the internal transcribed spacer region of and the partial sequence of 28S ribosomal DNA region along with the cultural characteristics. Because morphological observations and phylogenetic analysis indicated that the strain is distinct from previously known Cladophialophora species, we propose this species as a new species Cladophialophora lanosa sp. nov., and provide the detailed descriptions in this study.
Cultural Characteristics
;
Daegu
;
Dataset
;
DNA, Ribosomal
;
Hair
;
Hyphae
;
Korea
;
Mitosporic Fungi
;
Soil
;
Spores, Fungal
5.Amylosporus sulcatus sp. nov. (Russulales, Basidiomycota) from Southern China.
Fu Chang HUANG ; Bin LIU ; Hao WU ; Pei Sheng QIN ; Jin Feng LI
Mycobiology 2018;46(4):311-316
Amylosporus sulcatus sp. nov. is described from Nonggang Nature Reserve, southern China, on the basis of morphological and molecular data. The morphological description and illustrations for the new species are provided. The species is characterized by pileate and stipitate basidiocarps. The pileus surface is obviously concentrically and radiately sulcate and tomentum, and the pore surface is snow white. Phylogenetic analyses based on sequences of the internal transcribed spacer and nuclear large subunit ribosomal DNA confirmed it to be a new species.
China*
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Classification
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DNA, Ribosomal
;
Fruiting Bodies, Fungal
;
Snow
6.Alternaria brassicifolii sp. nov. Isolated from Brassica rapa subsp. pekinensis in Korea.
Jian Xin DENG ; Mei Jia LI ; Narayan Chandra PAUL ; May Moe OO ; Hyang Burm LEE ; Sang Keun OH ; Seung Hun YU
Mycobiology 2018;46(2):172-176
A new species belonging to the genus Alternaria was isolated from the necrotic leaf spots of Brassica rapa subsp. pekinensis in Yuseong district, Daejeon, Korea. It is an occasional isolate, not an etiological agent, which is morphologically similar to A. broccoli-italicae, but differs in conidial size and conidiophore shape. Phylogenetic analysis using the sequence datasets of the internal transcribed spacer (ITS) region of the rDNA, glyceraldehyde-3-phosphate dehydrogenase (gpd), and plasma membrane ATPase genes showed that it is distantly related to A. broccoli-italicae and closely related to Alternaria species in the section Pseudoalternaria, which belonged to a clade basal to the section Infectoriae. Morphologically, the species is unique because it produces solitary conidia or conidial chains (two units), unlike the four members in the section Pseudoalternaria that produce conidia as short branched chains. It exhibits weak pathogenicity in the host plant. This report includes the description and illustration of A. brassicifolii as a new species.
Adenosine Triphosphatases
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Alternaria*
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Brassica rapa*
;
Brassica*
;
Brassicaceae
;
Cell Membrane
;
Dataset
;
DNA, Ribosomal
;
Korea*
;
Oxidoreductases
;
Plants
;
Spores, Fungal
;
Virulence
7.Colletotrichum fructicola, a Member of Colletotrichum gloeosporioides sensu lato, is the Causal Agent of Anthracnose and Soft Rot in Avocado Fruits cv. “Hass”.
Dionicio FUENTES-ARAGÓN ; Sandra Berenice JUÁREZ-VÁZQUEZ ; Mateo VARGAS-HERNÁNDEZ ; Hilda Victoria SILVA-ROJAS
Mycobiology 2018;46(2):92-100
The filamentous Ascomycota Colletotrichum gloeosporioides sensu lato is a fungus that has been reported worldwide as a causal agent of anthracnose disease in avocado and other crops. In Mexico, this species affects fruits from an early stage of development in the orchard until the post-harvest stage. Although fungicides are continuously applied to control Colletotrichum species, pericarp cankers and soft rot mesocarp in fruits are still frequently observed. Considering the lack of a precise description of the causative agent, the aim of the current study was to determine the pathogens involved in this symptomatology. Twenty-four isolates were consistently obtained from the pericarp of avocado fruits cv. “Hass” collected in the central avocado-producing area of Mexico. Morphological features such as colony growth, conidia size, and mycelial appressorium were assessed. Bayesian multilocus phylogenetic analyses were performed using amplified sequences of the internal transcribed spacer region of the nuclear ribosomal DNA; actin, chitin synthase, glyceraldehyde-3-phosphate dehydrogenase partial genes; and APn2-Mat1-2 intergenic spacer and mating type Mat1-2 partial gene from the nine selected isolates. In addition, fruits were inoculated with a conidial suspension and reproducible symptoms confirmed the presence of Colletotrichum fructicola in this area. This pathogenic species can now be added to those previously reported in the country, such as C. acutatum, C. boninense, C. godetiae, C. gloeosporioides, and C. karstii. Disease management programs to reduce the incidence of anthracnose should include C. fructicola to determine its response to fungicides that are routinely applied, considering that the appearance of new species is affecting the commercial quality of the fruits and shifting the original population structure.
Actins
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Ascomycota
;
Chitin Synthase
;
Colletotrichum*
;
Disease Management
;
DNA, Ribosomal
;
Fruit*
;
Fungi
;
Incidence
;
Mexico
;
Oxidoreductases
;
Persea*
;
Spores, Fungal
8.Discovery of differential sequences for improving breeding and yield of cultivated Ophiocordyceps sinensis through ITS sequencing and phylogenetic analysis.
Qi-Qing CHENG ; Chun-Song CHENG ; Yue OUYANG ; Chi-Chou LAO ; Hao CUI ; Yu XIAN ; Zhi-Hong JIANG ; Wen-Jia LI ; Hua ZHOU
Chinese Journal of Natural Medicines (English Ed.) 2018;16(10):749-755
To accelerate the breeding process of cultivated Ophiocordyceps sinensis and increase its yield, it is important to identify molecular fingerprint of dominant O. sinensis. In the present study, we collected 3 batches of industrially cultivated O. sinensis product with higher yield than the others and compared their internal transcribed spacer (ITS) sequences with the wild and the reported. The ITS sequence was obtained by bidirectional sequencing and analyzed with molecular systematics as a DNA barcode for rapid and accurate identification of wild and cultivated O. sinensis collected. The ITS sequences of O. sinensis with detailed collection loci on NCBI were downloaded to construct a phylogenetic tree together with the sequences obtained from the present study by using neighbor-joining method based on their evolution relationship. The information on collection loci was analyzed with ArcGIS 10.2 to demonstrate the geographic distribution of these samples and thus to determine the origin of the dominant samples. The results showed that all wild and cultivated samples were identified as O. sinensis and all sequences were divided into seven phylogenetic groups in the tree. Those groups were precisely distributed on the map and the process of their system evolution was clearly presented. The three cultivated samples were clustered into two dominant groups, showing the correlation between the industrially cultivated samples and the dominant wild samples, which can provide references for its optimized breeding in the future.
Breeding
;
DNA, Fungal
;
genetics
;
DNA, Intergenic
;
genetics
;
Genes, Mating Type, Fungal
;
Hypocreales
;
chemistry
;
classification
;
genetics
;
growth & development
;
Phylogeny
9.Physical interactions and mutational analysis of MoYpt7 in Magnaporthe oryzae.
Lu-Yao HUANG ; Min WU ; Xiao-Yun YU ; Lin LI ; Fu-Cheng LIN ; Xiao-Hong LIU
Journal of Zhejiang University. Science. B 2018;19(1):79-84
In this study, we analyzed the physical interactions of the dominant negative isoform of MoYpt7. Our results show that MoYpt7 interacts with MoGdi1. The dominant negative isoform of MoYpt7 (dominant negative isoform, N125I) is essential for colony morphology, conidiation, and pathogenicity in the rice blast fungus. These results further demonstrate the biological functions of MoYpt7 in Magnaporthe oryzae.
DNA Mutational Analysis
;
Fungal Proteins/metabolism*
;
Gene Expression Regulation, Fungal
;
Genes, Fungal
;
Green Fluorescent Proteins/metabolism*
;
Magnaporthe/genetics*
;
Microscopy, Fluorescence
;
Mutation
;
Oryza/microbiology*
;
Phenotype
;
Plant Diseases/microbiology*
;
Protein Isoforms
10.A Case of Localized Skin Infection due to Purpureocillium lilacinum.
Hyun Bin KWAK ; Su Kyung PARK ; Seok Kweon YUN ; Han Uk KIM ; Jin PARK
Korean Journal of Medical Mycology 2017;22(1):42-49
Purpureocillium lilacinum, formerly Paecilomyces lilacinus, is a saprophytic fungus found in soil and rotting vegetation and rarely pathogenic to humans. Only 4 cases of cutaneous infection caused by Purpureocillium lilacinum have been reported in the name of Paecilomyces lilacinus. Herein, we report a case of localized cutaneous infection due to Purpureocillium lilacinum. A healthy 81-year-old immunocompetent male presented with an erythematous scaly and pustular plaque on his left dorsal hand that had begun 3 months ago. Histopathologic examination showed suppurative granulomatous inflammation with hyphae and round spores in the dermis. Periodic acid-Schiff and methenamine silver stain revealed fungal spores. Fungus culture from the biopsy specimen revealed velvety pink to white colonies after 15 day-incubation period. The slide culture stained with lactophenol-cotton blue showed typical long hyphae and flask-shaped phialides with oval conidia in chains. The result of DNA sequencing from the colony was identical to that of Purpureocillium lilacinum.
Aged, 80 and over
;
Biopsy
;
Dermis
;
Fungi
;
Hand
;
Humans
;
Hyphae
;
Inflammation
;
Male
;
Methenamine
;
Paecilomyces
;
Sequence Analysis, DNA
;
Skin*
;
Soil
;
Spores
;
Spores, Fungal

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