1887

Abstract

Summary: A series of experiments with culture media was carried out dealing with: (1) the action of different salts and their interaction in the medium; (2) the relation of the nitrogen source to the action of the salts; (8) the effect of the carbon source; (4) the proportionate influence of the salts in the medium; (5) the rate of growth. The results showed that this fungus grew well at 26° with an initial pH value of 7·0–8·0 and a growth period of 6–7 days. Statistical analysis of the results showed: () that under the given conditions an aqueous medium containing: 4%(w/v) glucose; 0–048 -KHPO ; 0·012 -MgSO.7HO; 0·025 -(NH)SO; 2p.p.m. Zn, Fe and Mn, produced optimal growth measured as mg. dry wt.; () a balance did not exist between KCl, KHPO and MgSO; () a balance did not exist between the concentration of glucose and (NH)SO; ) a balance existed between KHPO and (NH)SO; () this fungus could only utilize KNO or Ca(NO) to a negligible extent, while the best source found for nitrogen was (NH)SO; the most available phosphorus source was KHPO; () the rate of growth followed a sigmoid curve in a nutritionally optimal solution but in the minimal solution used the onset of decline in dry weight was delayed; () the importance of a balanced solution is that in suitable media the buffering action of the phosphate controls the onset of acidity inimical to growth.

Loading

Article metrics loading...

/content/journal/micro/10.1099/00221287-17-3-631
1957-12-01
2021-08-02
Loading full text...

Full text loading...

/deliver/fulltext/micro/17/3/mic-17-3-631.html?itemId=/content/journal/micro/10.1099/00221287-17-3-631&mimeType=html&fmt=ahah

References

  1. Fothergill P. G., Ashcroft R. 1955; The nutritional requirements of Venturia inaequalis. J. gen. Microbiol 12:387
    [Google Scholar]
  2. Fothergill P. G., Raine L.C.D.P. 1954; The mineral nutritional requirements of Mucor hiemulis Wehm.. J. gen. Microbiol 10:17
    [Google Scholar]
  3. Fothergill P. G., Yeoman M. M. 1956; Acidity and growth of Rhizopus stolonifer in mineral culture media. Balt. Bull. Jard. bot. Brux 26:371
    [Google Scholar]
  4. Morton A. G., Macmillan A. 1954; The assimilation of nitrogen from ammonium salts and nitrate by fungi. J. exp. Bot 5:232
    [Google Scholar]
  5. Robbins W. J. 1924; Isoelectric points for the mycelium of fungi. J. gen. Physiol 6:259
    [Google Scholar]
  6. Robbins W. J. 1937; The assimilation by plants of various forms of nitrogen. Amer. J. Bot 24:243
    [Google Scholar]
  7. Snedecor G. W. 1934; Calculation and interpretation of analysis of variance and co-variance. Iowa St. Coll. Div. Indust. Sci. Monogr 1 Ames, Iowa:
    [Google Scholar]
  8. Talley P. J., Blank R. L. M. 1941; A critical study of the nutritional requirements of Phymatotrichum omnivorum. Plant Physiol 16:1
    [Google Scholar]
http://instance.metastore.ingenta.com/content/journal/micro/10.1099/00221287-17-3-631
Loading
/content/journal/micro/10.1099/00221287-17-3-631
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error