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Document Type

Research

Abstract

Oak seedlings were grown in a pure culture of A. mellea in large test tubes. A layer of white quartz sand, in which an acorn was planted, covered a PDA medium containing rhizomorphs of the fungus. After four months growth, roots from the oak seedlings were extracted from the agar, washed, fixed in FAA, sectioned, stained, and examined microscopically. Abnormal areas of the tap roots showed epidermis demarcated by a black layer of suberized cells. One section showed this suberized layer broken by penetration of a foreign object. The cortex around this penetration point was disrupted and stained a dark brown color. The affected area was demarcated from healthy cells by a layer of cork, three cells thick. This technique will enable the development of more critical studies on this infection phenomenon.

Publication Date

1960

Journal Title

Proceedings of the Iowa Academy of Science

Volume

67

Issue

1

First Page

126

Last Page

132

Copyright

© Copyright 1960 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf

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