Effect of temperature, oxygen and carbon dioxide on cellulolytic activity of some fungi

Walsh, J.H.; Stewart, C. S.

doi:10.1016/s0007-1536(71)80082-7

Cited by 27 publications

(4 citation statements)

References 13 publications

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“…and C. globosum occurred at a water potential of -0.7 MPa, the loss in dry weight of cellulose filter paper suggested that some fungi, particularly Penicillium spp., may be just as active at slightly reduced water potentials. Although the effects of some environmental factors such as temperature, gas composition and pH on cellulolysis of some fungi has been determined (Walsh & Stewart, 1971 ;Forbes & Dickinson, 1977), information on the effect of water availability is scarce. Aspergillus terreus hydrolyses cellulose best at its maximum water holding capacity, 400%, while at 300-100% cellulolysis is slower (Kundu et a/., 1983).…”

Section: Discussionmentioning

confidence: 99%

Water Potential, Growth and Cellulolysis of Fungi Involved in Decomposition of Cereal Residues

Magan¹,

Lynch²

1986

Microbiology

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1181The effect of water potential and temperature on growth and cellulolysis of 10 soil fungi which colonize cereal crop residues was determined in tlitro. On 2% (w/v) milled straw agar all species grew in the range -0.7 to -7-0 MPa at both 10 and 20 "C. Growth rates differed depending on the solute type used to control water potential. In general, but with the exception of the Penicillium spp., growth decreased with decreasing water potential. Hyphal growth on sterile straw internode segments was much less than that on 2% straw agar. Fusarium culmorum and Trichoderma harzianum colonized straw pieces best at high potential (-0.7 MPa) while only F. culmorum and the Penicillium spp. grew at low potential (-7.0 MPa). Trichoderma spp., Gliocladium spp. and Chaetomium globosum cleared cellulose agar most rapidly, depth of clearing decreasing with water potential in the range -0.7 to -2.8 MPa at 20 "C. The relationship between dry weight loss of inoculated cellulose filter paper and water potential was more variable.

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Section: Discussionmentioning

confidence: 99%

Water Potential, Growth and Cellulolysis of Fungi Involved in Decomposition of Cereal Residues

Magan¹,

Lynch²

1986

Microbiology

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“…I filter paper was cut into small pieces, mixed with 300 ml distilled water and ball-milled in a I 1 porcelain pot for 4 days at 2 "C (model 9; Pascal1 Engineering, Crawley, Sussex). The cellulose suspension formed was diluted with distilled water to give a 2 (w/v) suspension, and this was stored at 2 "C. Dewaxed cotton yarn was kindly given by Scandura, Cleckheaton, Yorkshire, and was of the type used for conveyor belt carcasses (Walsh & Stewart, 1971). It was cut into short pieces and partially untwisted before being dewaxed by the method of Halliwell (1957).…”

Section: B J H S T E V E N S a N D J P A Y N Ementioning

confidence: 99%

Cellulase and Xylanase Production by Yeasts of the Genus Trichosporon

Stevens

Payne

1977

Journal of General Microbiology

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filtrates by Trichosporon cutaneum and T. pullulans were determined. With ball-milled filter paper as a test substrate maximum activity was detected 4 to 7 days after transfer from glucose to cellulose (ball-milled filter paper) as growth substrate. Comparison of the yeast filtrates with those from the moulds Trichoderma viride and Myrothecium verrucaria showed that the total activity of one strain of T. pullulans was comparable to that of the moulds with ball-milled filter paper as assay substrate. Activities were always lower when a-cellulose or dewaxed cotton were used as assay substrates. The main products of cellulose degradation were ,cellobiose and glucose, although the ratio of these products clearly differentiated between culture filtrates of the species examined. Xylanase activity was present in all the culture filtrates examined. Polyacrylamide gel electrophoresis of active filtrates produced strainspecific patterns of three to five stained bands with similar mobilities but an inactive filtrate lacked one band common to all the other filtrates.

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“…Most of the mentioned genera and species were reported in the literature as cellulose decomposers (FLANNIGAN 1970, MALIK and EGGINS 1970, WALSH and STEWART 1971, STEWART and WALSH 1972, MAZEN 1973, ABDEL-MALLEK 1984, MOHARRAM 1984.…”

mentioning

confidence: 99%

Saprophytic fungi isolated from animal and bird pens in Egypt

Moharram

Bagy

Abdel-Mallek

1987

J. Basic Microbiol.

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Forty-four samples collected from animal and bird pens were screened for their content of saprophytic fungi by using the dilution plate method. 76 species in addition to one variety of Aspergillus flavus belonging to 33 genera were recovered on three types of media: 20 genera and 49 species on Littman-oxgall agar, 19 genera and 41 species on cellulose- and 19 genera and 43 species on glucose-Czapek's agar. The most frequent genera were Aspergillus (21 species), Scopulariopsis (4 species) and Penicillium (10 species). Among the isolated fungi A. fumigatus, A. flavus, A. terreus, A. niger, A. sydowi, A. nidulans, S. brevicaulis, S. brumptii, P. chrysogenum and P. funiculosum were the most common species.

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Effect of temperature, oxygen and carbon dioxide on cellulolytic activity of some fungi

Cited by 27 publications

References 13 publications

Water Potential, Growth and Cellulolysis of Fungi Involved in Decomposition of Cereal Residues

Water Potential, Growth and Cellulolysis of Fungi Involved in Decomposition of Cereal Residues

Cellulase and Xylanase Production by Yeasts of the Genus Trichosporon

Saprophytic fungi isolated from animal and bird pens in Egypt

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