scholarly journals (3R,4aR,5S,6R)-6-Hydroxy-5-methylramulosin: a New Ramulosin Derivative from a Marine-Derived Sterile Mycelium

2007 ◽  
Vol 55 (6) ◽  
pp. 953-954 ◽  
Author(s):  
Ahmed Atef El-Beih ◽  
Hikaru Kato ◽  
Tomihisa Ohta ◽  
Sachiko Tsukamoto
Keyword(s):  
Sterile Mycelium

The origin of multiple mating types in mushrooms

1993 ◽  
Vol 104 (2) ◽  
pp. 227-230
Author(s):  
U. Kues ◽  
L.A. Casselton
Keyword(s):  
Mating Type ◽  
Multiple Mating ◽  
Mating Types ◽  
Mating Partner ◽  
Binucleate Cells ◽  
Large Numbers ◽  
Mating Type Genes ◽  
And Function ◽  
Developmental Switch ◽  
Sterile Mycelium

Having multiple mating types greatly improves the chances of meeting a compatible mating partner, particularly in an organism like the mushroom that has no sexual differentiation and no mechanism for signalling to a likely mate. Having several thousands of mating types, as some mushrooms do, is, however, remarkable - and even more remarkable is the fact that individuals only recognise that they have met a compatible mate after their cells have fused. How are such large numbers of mating types generated and what is the nature of the intracellular interaction that distinguishes self from non- self? Answers to these fascinating questions come from cloning some of the mating type genes of the ink cap mushroom Coprinus cinereus. A successful mating in Coprinus triggers a major switch in cell type, the conversion of a sterile mycelium with uninucleate cells (monokaryon) to a fertile mycelium with binucleate cells (dikaryon) which differentiates the characteristic fruit bodies. The mating type genes that regulate this developmental switch map to two multiallelic loci designated A and B and these must both carry different alleles for full mating compatibility. A and B independently regulate different steps in the developmental switch, making it possible to study just one component of the system and work in our laboratory has concentrated on understanding the structure and function of the A genes. It is estimated that some 160 different A mating types exist in nature, any two of which can together trigger the A-regulated part of sexual development. The first clue to how such large numbers are generated came from classical genetic analysis, which identified two functionally redundant A loci, (alpha) and beta. Functional redundancy is, indeed, the key to multiple A mating types and, as seen in Fig.1, molecular cloning has identified many more genes than was possible by recombination analysis.

Hirsutella kirchneri. [Descriptions of Fungi and Bacteria].

1984 ◽  
Author(s):  
B. L. Brady
Keyword(s):  
Geographical Distribution ◽  
Lolium Perenne ◽  
Avena Sativa ◽  
Sterile Mycelium

Abstract A description is provided for Hirsutella kirchneri. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: The mites Tarsonemus spirifex on Avena sativa (Rostrup, 1916) and Abacarus hystrix on Lolium perenne (Minter, Brady & Hall, 1983). GEOGRAPHICAL DISTRIBUTION: Denmark; Berkshire, UK. DISEASE: Little is known of the course of the disease and its spread. Some living mites bear externally sterile mycelium which sporulates when they die.

scholarly journals Potential of Different Fungi Species in Biodegradation Field of Phenolic Compounds

2019 ◽  
pp. 1-9
Author(s):  
Yassmin M. Shebany ◽  
Eman G. El-Dawy ◽  
Youssuf A. Gherbawy
Keyword(s):  
Phenolic Compounds ◽  
Red Sea ◽  
Environmental Pollutants ◽  
Metabolic Potential ◽  
Low Concentrations ◽  
Good Technique ◽  
Red Sea Coast ◽  
Living Organisms ◽  
Sterile Mycelium ◽  
Sea Coast

Phenolic compounds are dominant pollutants in terrestrial and freshwater environmental that have toxic effects on living organisms at low concentrations, because it has the ability to persist in the ecosystem. So bio-removal is a good technique that employs the metabolic potential of microorganisms to clean up the environmental pollutants and turned into less dangerous or harmless substances. This work aims to the isolation of different species of fungi from wastewater of factories and Red Sea coast to test the ability of these fungi to degrade phenolic compounds. Ten species of fungi and sterile mycelium are used to degrade phenol and its derivatives at different concentrations (0.4%, 0.6% and 0.8%). All fungi species have the ability of degradation of phenol and their derivatives, but P. chrysogenum, Saccharomyces sp. and sterile mycelium exhibited low ability to break down of hydroxyl-benzene, 2-naphthol and 1,3 dihydroxy benzene, respectively.

scholarly journals (3R,4aR,5S,6R)-6-Hydroxy-5-methylramulosin: A New Ramulosin Derivative from a Marine-Derived Sterile Mycelium.

ChemInform ◽  
2007 ◽  
Vol 38 (48) ◽  
Author(s):  
Ahmed Atef El-Beih ◽  
Hikaru Kato ◽  
Tomihisa Ohta ◽  
Sachiko Tsukamoto
Keyword(s):  
Sterile Mycelium

scholarly journals First Report of Apple Rot Caused by Neofabraea alba in Chile

Plant Disease ◽  
2005 ◽  
Vol 89 (12) ◽  
pp. 1360-1360 ◽  
Author(s):  
J. L. Henriquez
Keyword(s):  
Apple Fruit ◽  
Negative Control ◽  
Fruit Rot ◽  
Conidial Suspension ◽  
Export Markets ◽  
First Report ◽  
South Central ◽  
White Mycelium ◽  
Bull's Eye ◽  
Sterile Mycelium

A new rot of stored apples was observed in local and export markets on apples that were grown in the south-central region of Chile during 2004. Circular, pale brown spots with a darker outer ring were observed at least 3 months after harvest in cvs. Braeburn, Fuji, Granny Smith, Pink Lady, and Royal Gala. Lesions developed from lenticel cavities or wounds and reached 2 to 3 cm in diameter after 1 week at room temperature. Symptoms resembled those produced by the bull's eye rot pathogens on apple that occur in other parts of the world. Acervuli developed in the rotted areas, and microscopic examination revealed the presence of the fungus Neofabraea alba (Guthrie) (anamorph Phlyctema vagabunda Desm.) characterized by production of curved macroconidia and absence of microconidia (1). Pure culture on potato dextrose agar (PDA) yielded a characteristic white sterile mycelium. Four cv. Pink Lady apples were wound inoculated with mycelium of the pathogen and four apples were wound inoculated with a 5 × 104 CFU/ml conidial suspension. Four apples were wounded and inoculated with sterile water as a negative control. The fruit was held at 20°C. Symptoms appeared after 4 and 5 days in the mycelium and conidial inoculated apples, respectively. Resulting symptoms were similar to those originally observed. Abundant macroconidia were produced at the inoculation sites, and a sterile, white mycelium was recovered after isolation on PDA. To our knowledge, this is the first report of apple fruit rot caused by N. alba in Chile. Reference: (1) J. L. Henriquez et al. Plant Dis. 88:1134, 2004.

RAPD analysis of the sexual state and sterile mycelium of the fungus cultivated by the leaf-cutting ant Acromyrmex hispidus fallax

2001 ◽  
Vol 105 (2) ◽  
pp. 173-176 ◽  
Author(s):  
Fernando C. Pagnocca ◽  
Mauricio Bacci ◽  
Maria H. Fungaro ◽  
Odair C. Bueno ◽  
Maria J. Hebling ◽  
...  
Keyword(s):  
Rapd Analysis ◽  
Leaf Cutting ◽  
Sexual State ◽  
Sterile Mycelium

scholarly journals Analysis of Soil Mycoprofile of Botanical Garden of Khalsa College, Amritsar, Punjab, India.

2016 ◽  
Vol 5 (02) ◽  
pp. 1280
Author(s):  
Navtej Singh ◽  
Ramandeep Kaur*
Keyword(s):  
Fusarium Solani ◽  
Microbial Growth ◽  
Botanical Garden ◽  
Garden Soil ◽  
Rhizopus Stolonifer ◽  
Ph Values ◽  
Mucor Mucedo ◽  
Fusarium Sp ◽  
Agriculture Products ◽  
Sterile Mycelium

The samples used for this study were obtained from different rhizosphere garden soil source. The fungi isolates were Aspergillus spp., Curvularia sp, Cladosporium cladosporioides, Fusarium sp, Fusarium solani, Mucor mucedo, Myrothecium sp., Paecilomyces sp., Phoma sorghina, Rhizopus stolonifer, Sterile mycelium Yeast sp.. and Verticillum spp.  Some physiological studies show the range of pH from pH 4.92 in CSSS to pH 8.01 in PLRS sample sources. The soil pH values obtained in this study were near neutral ranges, which favour microbial growth. Various species of fungi were encountered in soil sources including the harmful ones. Hence, fungicides can be applied occasionally on these soils to reduce the fungi load in these areas when necessary.Data obtained in this study is valuable to monitor and protect the environment including agriculture products for sustainable economic development.

scholarly journals A Study on Soil Thermophilic and Thermotolerant Fungi in Thamar-Yemen

2017 ◽  
Vol 3 (1) ◽  
Author(s):  
Salah M. Al-Bader , Adel Q. Aleryani , Aisha A. Almutaa
Keyword(s):  
Positive Result ◽  
Seasonal Fluctuation ◽  
Soil Samples ◽  
Dilution Method ◽  
Black And White ◽  
Thermotolerant Fungi ◽  
Colony Forming Units ◽  
Soil Dilution ◽  
Sterile Mycelium

Thirty-eight soil samples were collected from different sites in Thamar province during the period from 4/2012 to 2/2013.The direct plate, and dilution plates methods were followed to isolation of counting colony forming units, the potato carrot agar (PCA) and Emerson's media were used A total of 23 fungi belong to (14) genera were isolated, they include (11) Hyphomycetes, (10) Ascomycetes, and (2) Zygomycetes besides black and white sterile mycelium. A fourteen  isolates were regarded asnewly record for Yemeni mycobiota,they include Acremonium murorum, Acrophialophorafusispora, Chaetomiumatrobrunneum, C.gracile,C.strumarium, C.therophilevar.coprophpile, Corynascussepedonium ,Emericellarugulosa, Melanocarpusalbomyces, paecelomycesinflatus Papulosporathermophila, Rhizomucormiehi, Scytalidiumthermophilum, and Talromycesthermophilus Soil dilution method showed that the  colony forming units (CFUs)in soil had seasonal fluctuation , they were significantly  higher (36667)  during moderate/humid month than  cold/dry months (20400) (p<0.05), while the total similarity% is high between  fungal genera which were isolated during the two periods (78.57%) .A test of 15 isolates to produce cellulase, amylase, lipase, protease, xylanase and phenoloxidase showed a different activities in number of enzymes and levels of production. Corynascussepedonium, Eemericellanedulans and Malbrancheacinnamomea gave a positive result for all enzymes          

scholarly journals Incidence of Airborne Fungi in Rajshahi Metropolitan City in Relation to Seasonal Fluctuations

1970 ◽  
pp. 37-41 ◽  
Author(s):  
Most Ferdousi Begum ◽  
Shahidul Alam ◽  
Md Shah Alam
Keyword(s):  
Key Words ◽  
Meteorological Parameters ◽  
Culture Media ◽  
Airborne Fungi ◽  
Seasonal Fluctuations ◽  
Metropolitan City ◽  
Plate Technique ◽  
Sterile Mycelium

Using PDA, Saboraud's, Czapek's and Richard's media and settling plate technique, a total of 16, 593 fungal colonies belonging to 28 genera were identified during November 2006 and October 2007 in the atmosphere of the Rajshahi Metropolitan City. Seasonal fluctuations in the incidence of airborne fungi and their relation to some meteorological parameters were noticed. The incidence varied significantly by seasons. Maximum incidence of air borne fungi was recorded from November to January, where as the minimum was found from August to October. The most prevalent fungal genera were Aspergillus, Candida, Penicillium, Rhizopus, Fusarium, Alternaria, Curvularia and Cladosporium in respect of seasons. Aspergillus was the most dominting fungi contributed 25.6, 26.3, 24.4 and 26.3% in PDA, Sabouraud's, Czapek's and Richard's media, respectively during the twelve months of observation. The percentage contributions of the most predominant 14 genera were 83.1, 84.1, 83.9 and 885.6 collected in PDA, Sabouraud's, Czapek's and Richard's media, respectively. Rest of the 14 genera were covering about 8.3, 8.0, 7.1 and 84.2% of the total aero-fungi and sterile mycelium and unidentified fungi were contributed 7.8, 7.4, 8.4 and 8.1%, respectively. Key words: Airborne fungi; incidence; culture media; season; fluctuation. DOI: 10.3329/jles.v3i0.7444 J. Life Earth Sci., Vols. 3-4: 37-41, 2009

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