ISSN:0027-5514    

DOI:10.1080/00275514.1950.12017816

出版商:Taylor&Francis    

年代:1950

数据来源: Taylor

ISSN:0027-5514    

DOI:10.1080/00275514.1950.12017817

出版商:Taylor&Francis    

年代:1950

数据来源: Taylor

摘要:

SUMMARYIf a culture lends itself to lyophil preservation, we believe this to constitute the most reliable means of maintaining it in unaltered form over long periods of time. In the long run it is also the least time-consuming. If the culture cannot be so preserved, one must rely upon alternative methods. Preservation in soil offers certain favorable advantages, but this method—like lyophil preservation—is not applicable to the maintenance of mycelial forms. If the culture is strictly mycelial, or if very few spores are produced, preservation under oil generally affords the best means of conservation.

ISSN:0027-5514    

DOI:10.1080/00275514.1950.12017818

出版商:Taylor&Francis    

年代:1950

数据来源: Taylor

摘要:

SUMMARY1.Disciseda cervinais semi-hypogeal in the earlier stages but becomes completely hypogeal by developing a mycelial layer round it.2.The sporophore is attached by a well developed mycelial cord of complex structure.3.The development is of thelacunar type.4.The peridium consists of three layers: mycelial layer, pseudo-parenchymatous layer and the endoperidium.5.The mycelial layer forms around the entire fruit-body a sandy case which crumbles down when the plant is exposed by wind. The sandy case persists as an apical disc and helps in inverting the plant.6.The mouth is formed at the base by the gelatinization of the basal part of the mycelial cord penetrating the exoperidium and the endoperidium. When the top-heavy plant becomes inverted the mouth assumes an apical position.7.The structure of the gleba and the origin of the capillitium is of the same type as described for other members of the family.8.The hypogeous habit has been secondarily acquired under changed environmental conditions.9.The genusDiscisedais a highly specialized member of the family Lycoperdaceae.The writer is deeply indebted to Dr. Nazir Ahmad and Sher Ahmad Khan Lodhi for aid in the preparation of the manuscript and to Dr. Donald P. Rogers for reading the typescript.

ISSN:0027-5514    

DOI:10.1080/00275514.1950.12017819

出版商:Taylor&Francis    

年代:1950

数据来源: Taylor

ISSN:0027-5514    

DOI:10.1080/00275514.1950.12017820

出版商:Taylor&Francis    

年代:1950

数据来源: Taylor

摘要:

SUMMARY1.A mold causing a blue stain of pine wood, identified asEndo-conidiophora moniliformis(Hedge.) Davidson, grows well in a solution of mineral salts, dextrose, and asparagin, when supplied with thiamin. It has a wide range of pH tolerance on this and other media, and an optimum temperature for mycelial growth of approximately 25°C.2.Considerable quantities of ethyl acetate as well as some ethyl alcohol are produced in the above solution, and the ester is formed also in malt extract solution, but no higher acetates were detected in cultures on either medium.3.The production of esters on the dextrose-asparagin medium is correlated closely with gain in dry weight by the fungus, a maximum for both being attained in about 12 days at a temperature of 20°C., following which the esters are gradually decomposed.4.E. moniliformisproduces good growth, accompanied by varying amounts of ester, on the above medium when asparagin is replaced by any of several organic nitrogen compounds, notably urea, but in general neither growth nor ester production is pronounced when inorganic nitrogen sources are used. The dextrose-urea medium yields relatively large quantities of ethyl acetate.5.When urea is employed as the nitrogen source and other carbon compounds substituted for dextrose in the medium, it is found that soluble starch, mannose, cellobiose, and galactose permit good growth and good to poor ester production, and 2 pentoses good growth but no ester odor. Various 3-carbon intermediates in the usual chain of alcoholic fermentation support little or no growth and yield no detectable ester odor. Acetic acid in relatively low concentrations inhibits germination and growth of the organism, but ethyl acetate is utilized for the production of mycelium.Ethyl alcohol serves as an excellent carbon source forE. moniliformiswith respect to both growth and production of ethyl acetate.6.The significance of these findings for the elucidation of the phase-sequence of ethyl acetate synthesis byE. moniliformisis discussed.

ISSN:0027-5514    

DOI:10.1080/00275514.1950.12017821

出版商:Taylor&Francis    

年代:1950

数据来源: Taylor

ISSN:0027-5514    

DOI:10.1080/00275514.1950.12017822

出版商:Taylor&Francis    

年代:1950

数据来源: Taylor

ISSN:0027-5514    

DOI:10.1080/00275514.1950.12017823

出版商:Taylor&Francis    

年代:1950

数据来源: Taylor