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Details
The
features of large extracellular sheaths observed in a number of fungi are
described in vitro as in vivo conditions. Results of labelling of
these sheaths, including a positive reaction for RNA in one case, of chitin,
glucosides etc, in other cases, are described. Production of extracellular
matter that was often observed to be released directly from the cell content
was pronounced in elms as in other plants. In elm, large amounts of matter in
vessel elements were traceable to pathogen elements in this manner. This, and
also the similar vessel wall lining and the wall invading opaque matter in the
systems studied, displayed small opaque particles that were clearly associated
with fungal elements.
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