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On the changes through which the nodule organism (Ps. radicicola) passes under cultural conditions

Published online by Cambridge University Press:  27 March 2009

W. F. Bewley
Affiliation:
(Rothamsted Experimental Station, Harpenden.)
H. B. Hutchinson
Affiliation:
(Rothamsted Experimental Station, Harpenden.)

Extract

It is shown in the preceding pages that under certain cultural conditions the nodule organism from the roots of red clover, broad bean, lucerne and lupin exhibits a tendency towards granular disintegration of the cell with the formation of small non-motile coccoid bodies, about 0-4μ diameter.

In the cultures ordinarily in use these coccoid bodies are not formed extensively, but cultivation on soil extract media rapidly leads to their production, until finally they constitute the predominant type in the culture.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1920

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References

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