scholarly journals Microsatellites in the Genome of the Edible Mushroom,Volvariella volvacea

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Ying Wang ◽  
Mingjie Chen ◽  
Hong Wang ◽  
Jing-Fang Wang ◽  
Dapeng Bao
Keyword(s):  
Agaricus Bisporus ◽  
Schizophyllum Commune ◽  
Edible Mushroom ◽  
Volvariella Volvacea ◽  
Coprinopsis Cinerea ◽  
Edible Fungi ◽  
Coding Regions ◽  
Frequent Motif ◽  
Bioinformatics Software ◽  
Fungal Genomes

Using bioinformatics software and database, we have characterized the microsatellite pattern in theV. volvaceagenome and compared it with microsatellite patterns found in the genomes of four other edible fungi:Coprinopsis cinerea,Schizophyllum commune,Agaricus bisporus,andPleurotus ostreatus. A total of 1346 microsatellites have been identified, with mono-nucleotides being the most frequent motif. The relative abundance of microsatellites was lower in coding regions with 21 No./Mb. However, the microsatellites in theV. volvaceagene models showed a greater tendency to be located in the CDS regions. There was also a higher preponderance of trinucleotide repeats, especially in the kinase genes, which implied a possible role in phenotypic variation. Among the five fungal genomes, microsatellite abundance appeared to be unrelated to genome size. Furthermore, the short motifs (mono- to tri-nucleotides) outnumbered other categories although these differed in proportion. Data analysis indicated a possible relationship between the most frequent microsatellite types and the genetic distance between the five fungal genomes.

scholarly journals Assessment of nutritional composition and heavy metal content in some edible mushroom varieties collected from different areas of Bangladesh

2016 ◽  
Vol 1 (3) ◽  
pp. 495-501 ◽  
Author(s):  
KM Mohiuddin ◽  
Md Mehediul Alam ◽  
Md Taufique Arefin ◽  
Istiaq Ahmed
Keyword(s):  
Agaricus Bisporus ◽  
Metal Content ◽  
Dry Weight ◽  
Edible Mushroom ◽  
Nutritional Composition ◽  
Weight Basis ◽  
Volvariella Volvacea ◽  
Mushroom Species ◽  
Fe Content ◽  
Flame Emission

Four edible mushroom species (Pleurotus ostreatus, Agaricus bisporus, Volvariella volvacea, Ganoderma lucidum) from different locations of Bangladesh, were analysed for their protein and metal content profile (K, Na, Fe, Cu, Zn, Mn, Cr, Pb, As and Cd). Trace metals were determined by atomic absorption spectrophotometer, Na and K by flame emission spectrophotometer and protein by micro Kjeldhal method. All element concentrations were determined on a dry weight basis. The protein content of mushrooms varied from 13.8%–34.3% and the metal content of samples ranged from 0.54–2.25% for K and 12.6–81.6, 69.5–626.2, 39.2–163.4, 30.1–75.5, 52.9–104.5, 0.20–0.30, 0.13–0.59 ?g g-1 for Na, Fe, Cu, Zn, Mn, Cd, Pb, respectively.  Arsenic and cadmium concentrations were below the detection limit of the method used. The detection limits of the method for As and Cd are 0.01 ?g g-1 for each element. In general, K and Fe content were higher than other metals in all mushroom species. The levels of Cu and Zn in some mushroom samples were found to be higher than legal limits.Asian J. Med. Biol. Res. December 2015, 1(3): 495-501

scholarly journals Effect of polyvalencies of glycotopes on the binding of a lectin from the edible mushroom, Agaricus bisporus

2003 ◽  
Vol 371 (2) ◽  
pp. 311-320 ◽  
Author(s):  
Albert M. WU ◽  
June H. WU ◽  
Anthony HERP ◽  
Jia-Hau LIU
Keyword(s):  
Agaricus Bisporus ◽  
Therapeutic Potential ◽  
Specific Binding ◽  
Biological Activities ◽  
Edible Mushroom ◽  
Structural Requirement ◽  
Colon Cells ◽  
Lectin Receptor ◽  
Proliferative Effect ◽  
Potent Factor

Agaricus bisporus agglutinin (ABA) isolated from edible mushroom has a potent anti-proliferative effect on malignant colon cells with considerable therapeutic potential as an anti-neoplastic agent. Since previous studies on the structural requirement for binding were limited to molecular or submolecular levels of Galβ1-3GalNAc (T; Thomsen–Friedenreich disaccharide glycotope; where Gal represents d-galactopyranose and GalNAc represents 2-acetamido-2-deoxy-d-galactopyranose) and its derivatives, the binding properties of ABA were further investigated using our collection of glycans by enzyme-linked lectinosorbent assay and lectin–glycan inhibition assay. The results indicate that polyvalent Galβ1-related glycotopes, GalNAcα1-Ser/Thr (Tn), and their cryptoforms, are the most potent factor for ABA binding. They were up to 5.5×105 and 4.7×106 times more active than monomeric T and GalNAc respectively. The affinity of ABA for ligands can be ranked as: multivalent Tα (Galβ1-3GalNAcα1-), Tn and I/II (Galβ1-3GlcNac/Galβ1-4GlcNAc, where GlcNAc represents 2-acetamido-2-deoxy-d-glucopyranose)>>>>monomeric Tα and Tn>I>>GalNAc>>>II, L (Galβ1-4Glc, where Glc represents d-glucopyranose) and Gal (inactive). These specific binding features of ABA establish the importance of affinity enhancement by high-density polyvalent (versus multiantennary I/II) glycotopes and facilitate our understanding of the lectin receptor recognition events relevant to its biological activities.

Variation in size and shape of physogastry of Dolichocybe perniciosa (Acari: Dolichocybidae)

2019 ◽  
Vol 24 (8) ◽  
pp. 1526-1532
Author(s):  
Qingxiu Lan ◽  
Bingrong Ke ◽  
Jianhua Liao ◽  
Zhenghui Lu ◽  
Qing-Hai Fan
Keyword(s):  
Agaricus Bisporus ◽  
Lentinula Edodes ◽  
Pleurotus Eryngii ◽  
Width Ratio ◽  
Strong Variation ◽  
Edible Fungi ◽  
Auricularia Auricula ◽  
Suitable Temperature ◽  
Length Width ◽  
Shape And Size

The formation of physogastry of the mushroom mite Dolichocybe perniciosa (Acari: Prostigmata: Dolichocybidae) has not been well understood. The shape and size of this mite vary dramatically. To evaluate the effects of environmental factors on the formation of physogastry we tested eight species of edible fungi hyphae, five temperatures and five humidity levels on the shape and size of physogastry. Dolichocybe perniciosa only fed on six species of edible fungi, Agaricus bisporus, Auricularia auricula-judae, Auricularia polytricha, Flammulina velutipes, Ganoderma lucidum and Lentinula edodes but failed to develop on the hyphae of Pleurotus geesteranus and Pleurotus eryngii. However, the six species of edible fungi had different effects on the formation and development of physogastry in D. perniciosa. The suitable temperature for the physogastric formation was from 18°C to 28°C at 75±5% RH, and the suitable humidity was from 22% to 92% at 25°C. The width of physogastries was less than 0.85 mm at five temperatures. The majority of physogastries were oblong or cylindrical under ideal temperature (25°C), but globular at a low temperature (13°C). The largest length and the highest length/width ratio were recorded at 25°C. The length and width of the physogastry were less than 4.0 mm and 0.8 mm, respectively, under tested humidity levels. The highest length/width ratio was 8.19 at 65% RH.

Identification of a substrate of the methyltransferase Ich1 involved in cap differentiation in Coprinopsis cinerea

Impact ◽  
2020 ◽  
Vol 2020 (3) ◽  
pp. 9-11
Author(s):  
Hajime Muraguchi
Keyword(s):  
Molecular Mechanisms ◽  
Protein A ◽  
Edible Mushroom ◽  
Structural Features ◽  
Dna Binding Domain ◽  
Coprinopsis Cinerea ◽  
Reproductive Process ◽  
Winged Helix ◽  
Pileus Formation ◽  
Crucial Part

The ichijiku1 (ich1) gene is an essential controller of the formation of the 'cap', or pileus in the fruiting of Coprinopsis cinerea, an edible mushroom more commonly known as grey shag. The ich1 gene encodes for the Ich1 protein, a methyltransferase enzyme with a winged helix-like DNA-binding domain as well as an o-methyltransferase domain. These structural features contribute towards its rather unique molecular mechanisms. Formation of the pileus represents a crucial part of the reproductive process of C. cinerea. Thus, mutations or environmental conditions that affect pileus formation are likely to have a dramatic impact on the survival of such strains of the fungus. Dr Hajime Muraguchi, from Akita Prefectural University is leading a team that is seeking to elucidate the molecular mechanisms of the ich1 gene.

Nutritional and Medicinal Value of Specialty Mushrooms

1990 ◽  
Vol 53 (10) ◽  
pp. 883-894 ◽  
Author(s):  
WILLIAM M. BREENE
Keyword(s):  
Agaricus Bisporus ◽  
Lentinula Edodes ◽  
Blood Platelet ◽  
Toxic Substances ◽  
Volvariella Volvacea ◽  
Button Mushroom ◽  
Medicinal Value ◽  
Therapeutic Value ◽  
Straw Mushroom ◽  
Active Substances

Although the button mushroom (Agaricus bisporus) accounts for slightly over half of total world mushroom production, specialty mushrooms, e.g., shiitake (Lentinula edodes), straw (Volvariella volvacea), oyster (Pleurotus spp.), and enokitake (Flammulina velutipes), are increasing in popularity. These species contain moderate quantities of good quality protein and are good sources of dietary fiber, vitamin C, B vitamins, and minerals. Lipid levels are low, but unsaturated to saturated fatty acid ratios are high (about 2.0 – 4.5:1). Some species (e.g., shiitake) accumulate cadmium and selenium and other heavy metals, and some may contain toxic substances such as the heat labile cardiotoxic proteins volvatoxin in the straw mushroom and flammutoxin in enokitake. Extensive clinical studies, primarily in Japan, have clearly demonstrated that a number of species have medicinal and therapeutic value, by injection or oral administration, in the prevention/treatment of cancer, viral diseases (influenza, polio), hypercholesterolemia, blood platelet aggregation, and hypertension. Most of the studies have focused on shiitake, enokitake, Pleurotus spp., and on the generally nonculinary Ganoderma spp. Many of the active substances which include polysaccharides (e.g., β-glucans), nucleic acid derivatives (the hypocholesterolemic eritadenine), lipids, peptides, proteins, and glycoproteins, have been isolated and identified. Some of the mechanisms of activity have been elucidated, e.g., antiviral activity via stimulation of interferon production in the host. Additional medical claims less well documented may nonetheless have some validity and merit further study.

Antioxidant potential of edible mushroom ( Agaricus bisporus) protein hydrolysates and their ultrafiltration fractions

2017 ◽  
Vol 230 ◽  
pp. 58-67 ◽  
Author(s):  
Benard Muinde Kimatu ◽  
Liyan Zhao ◽  
Yuan Biao ◽  
Gaoxing Ma ◽  
Wenjian Yang ◽  
...  
Keyword(s):  
Agaricus Bisporus ◽  
Edible Mushroom ◽  
Protein Hydrolysates ◽  
Antioxidant Potential

scholarly journals Availability of Wild Edible Fungi in La Malinche National Park, Mexico

2014 ◽  
Vol 2014 ◽  
pp. 1-15
Author(s):  
A. Montoya ◽  
A. Kong ◽  
R. Garibay-Orijel ◽  
C. Méndez-Espinoza ◽  
Rodham E. Tulloss ◽  
...  
Keyword(s):  
National Park ◽  
Temporal Frequency ◽  
Edible Mushroom ◽  
Edible Fungi ◽  
Traditional Use ◽  
Mushroom Species ◽  
Transect Line ◽  
Production Values ◽  
La Malinche ◽  
La Malinche National Park

The aim of this paper is to compare edible mushroom availability between the two slopes of La Malinche National Park in central México, and to discuss the possible relation between their availability and traditional use. Eight transects were set up. Samples were collected weekly during the rainy seasons of years 1998–2000. Sixty-one edible mushroom species were collected from a total area of 3200 m2 (0.32 ha). Over the three-year period, the diversity of mushrooms ranged from 21 to 28 taxa per transect line. Sporocarps were produced at a rate from 2.06 to 6.05 kg/401.51 m2. The highest species richness and production values for spatio-temporal frequency were obtained in Southeast slope. Edible mushrooms availability in the Southeast slope showed a strong dominance, driven mainly by Laccaria trichodermophora and Hebeloma mesophaeum. The Southwest slope had more diversified availability in time and space, with the most representative species, being L. trichodermophora. The characteristics of traditional management on each slope determined the differences found.

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