Environmental Factors Affecting the Pattern of Perithecium Development in Sordaria fimicola on Agar Medium

1973 ◽  
Vol 100 (2) ◽  
pp. 78 ◽  
Author(s):  
Robert T. Pollock
Keyword(s):  
Environmental Factors ◽  
Agar Medium ◽  
Factors Affecting ◽  
Sordaria Fimicola

Some nutritional and environmental factors affecting growth and production of sclerotia by a strain of Aspergillus niger

1969 ◽  
Vol 15 (8) ◽  
pp. 835-840 ◽  
Author(s):  
V. P. Agnihotri
Keyword(s):  
Aspergillus Niger ◽  
Environmental Factors ◽  
Synergistic Effect ◽  
Magnesium Sulfate ◽  
Sodium Sulfite ◽  
Agar Medium ◽  
Carbon Sources ◽  
Dry Weight ◽  
Factors Affecting ◽  
Nutritional Elements

The effects of two nutritional elements (carbon and sulfur) and two environmental factors (pH and temperature) on growth and sclerotial production of Aspergillus niger were determined on a synthetic agar medium. The fungus grew and produced sclerotia under laboratory conditions on media containing wide ranges of carbon and sulfur sources. Of the 20 carbohydrates tested, only ribose, mannitol, and malonic, fumaric, and citric acids failed to induce production of sclerotia. A synergistic effect was observed on the formation of sclerotia when favorable and unfavorable carbon sources were supplied in different combinations. Of the 14 sulfur compounds tested, magnesium sulfate yielded the highest and sodium sulfite the lowest number of sclerotia. Raising the concentration of magnesium sulfate to 3 g/l increased the number of sclerotium initials and the number and dry weight of those which matured. In general, no correlation occurred between the number of sclerotia formed and their dry weights on different carbon or sulfur sources. Sclerotia were most numerous at pH 7.0 and 35 °C.

Environmental factors affecting reproducibility of bioremediation field assays in Antarctica

2020 ◽  
Vol 169 ◽  
pp. 102915 ◽  
Author(s):  
L.M. Martínez Álvarez ◽  
L.A.M. Ruberto ◽  
J.M. Gurevich ◽  
W.P. Mac Cormack
Keyword(s):  
Environmental Factors ◽  
Factors Affecting

scholarly journals Host and Environmental Factors Affecting the Intestinal Microbiota in Chickens

2018 ◽  
Vol 9 ◽  
Author(s):  
Jannigje G. Kers ◽  
Francisca C. Velkers ◽  
Egil A. J. Fischer ◽  
Gerben D. A. Hermes ◽  
J. A. Stegeman ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Intestinal Microbiota ◽  
Factors Affecting

Species Responses to Grazing and Environmental-Factors in an Arid Halophytic Shrubland Community

1987 ◽  
Vol 35 (2) ◽  
pp. 135 ◽  
Author(s):  
RB Hacker
Keyword(s):  
Environmental Factors ◽  
Soil Salinity ◽  
Large Scale ◽  
Chemical Properties ◽  
Grazing Pressure ◽  
Aerial Photographs ◽  
Small Scale ◽  
Factors Affecting ◽  
Species Responses

Species responses to grazing and environmental factors were studied in an arid halophytic shrubland community in Western Australia. The grazing responses of major shrub species were defined by using reciprocal averaging ordination of botanical data, interpreted in conjunction with a similar ordination of soil chemical properties and measures of soil erosion derived from large-scale aerial photographs. An apparent small-scale interaction between grazing and soil salinity was also defined. Long-term grazing pressure is apparently reduced on localised areas of high salinity. Environmental factors affecting species distribution are complex and appear to include soil salinity, soil cationic balance, geomorphological variation and the influence of cryptogamic crusts on seedling establishment.

Identification of environmental factors affecting the speed of purebred Arabian racehorses in The Netherlands

2009 ◽  
Vol 125 (1) ◽  
pp. 97-100 ◽  
Author(s):  
A. Schurink ◽  
M.C.J. Theunissen ◽  
B.J. Ducro ◽  
P. Bijma ◽  
E.M. van Grevenhof
Keyword(s):  
Environmental Factors ◽  
The Netherlands ◽  
Factors Affecting
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