Summary
Electron microscopy of ultra-thin sections of Hippophaë rhamnoides root nodules has been carried out in order to elucidate the nature of the endophyte. The organism is seen as a branching, septate filament approximately 0.6 microns in diameter bearing on its terminal ends spherical sub-divided vesicles 3–4 microns in diameter. In the mature nodule the vesicles are the most prominent endophyte form and appear to be formed by swelling of the hyphal tips. It is concluded that the endophyte is an actinomycete closely related to but not identical with that of Alnus glutinosa.
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Gatner, E.M.S., Gardner, I.C. Observations on the fine structure of the root nodule endophyte of Hippophaë rhamnoides L.. Archiv. Mikrobiol. 70, 183–196 (1970). https://doi.org/10.1007/BF00407709
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DOI: https://doi.org/10.1007/BF00407709