Ultrastructure of the Alnus crispa var. mollis Fern. root nodule endophyte.

Abstract:

:Nitrogen-fixing, field-obtained root nodules of the silky green alder were studied by transmission electron microscopy. The nodule endophyte exhibited a prokaryotic cytology and was present in two forms: the hypha(0.3-1.0mum), which was branched and septate, and the vesicle (3-5mum), which was also septate and developed at the parental hypha tip. Bacteria-like cells, previously observed in light microscopy studies, were not seen in the present work. The actinomycete-like endophyte penetrated through the host cell wall and becane enveloped by a capsular material (0.1mum), the whole being enclosed by host membranes. In some host cells, the endophyte appeared to lyse and become a mass of shrunken debris. The fine structure of the Alnus crispa var. mollis root nodule endophyte was found to be similar to that of other nonleguminous root nodule endophytes.

journal_name

Can J Microbiol

authors

Lalonde M,Knowles R

doi

10.1139/m75-157

subject

Has Abstract

pub_date

1975-07-01 00:00:00

pages

1058-80

issue

7

eissn

0008-4166

issn

1480-3275

journal_volume

21

pub_type

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