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- Title
The Effect of Nonanal on Dipodascus aggregatus: I. Studies on Growth.
- Authors
Nyman, Rita
- Abstract
The growth of a strain of Dipodascus aggregatus Francke-Grosmann was strongly promoted by the aliphatic aldehyde nonanal. The highest effect was found with 80-160 μmol of nonanal per 1. The growth-promoting activity of nonanal is principally the result of an ability to shorten the lag phase. Neither the maximum value for growth nor the growth rate seem to he increased. The growth-promoting activity of nonanal could be observed only if the cells used for inoculation were taken from a culture in the phase of accelerated growth. The highest growth-promoting activity was observed when the nonanal was added before inoculation, a large effect was still observed when it was added 24 hours after inoculation, but there was no effect when it was added 33 hours after inoculation. The growth-promoting activity of nonanal remained unchanged when a mixture of 15 vitamins and growth factors was given to the medium. Nonanol and nonanoic acid stimulated growth, although to a lower degree than nonanal. There was a gradual increase in the growth-promoting effect of nonanal as the pH of the medium was increased between 3.0 and 8.0, showing that this effect is most pronounced at the higher pH values.
- Subjects
DIPODASCUS aggregatus; ALDEHYDES; PLANT growth promoting substances; GROWTH factors; PLANT growth; PLANT molecular biology; PLANT inoculation
- Publication
Physiologia Plantarum, 1966, Vol 19, Issue 2, p377
- ISSN
0031-9317
- Publication type
Article
- DOI
10.1111/j.1399-3054.1966.tb07028.x