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Production of Acid Is Responsible For Antibiosis by Some Ectomycorrhizal Fungi

Rasanayagam, S., Jeffries, Peter (1992) Production of Acid Is Responsible For Antibiosis by Some Ectomycorrhizal Fungi. Mycological Research, 96 . pp. 971-976. ISSN 0953-7562. (doi:10.1016/s0953-7562(09)80600-x) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:22410)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided.
Official URL:
https://doi.org/10.1016/s0953-7562(09)80600-x

Abstract

The interaction of Pythium ultimum with a variety of ectomycorrhizal fungi was investigated in vitro. Out of 19 isolates of ectomycorrhizal fungi tested for inhibition of the growth of P. ultimum, 16 caused swelling and bursting of the tips of leading hyphae. These effects were eliminated by maintaining the culture medium at pH 6 with a biological buffer. This indicated that acidification of the medium was the cause of the inhibition. Hyphal growth of P. ultimum was inhibited below pH 3. In liquid culture, the ectomycorrhizal fungus Paxillus involutus reduced the pH of the medium to less than 3 before it reached stationary phase. It is suggested that the antibiotic effect exhibited by some ectomycorrhizal fungi is due to acid production. HPLC analyses of culture filtrates of Pax. involutus were shown not to contain significant amounts of oxalic acid, but other acids were present in large quantities.

Item Type: Article
DOI/Identification number: 10.1016/s0953-7562(09)80600-x
Subjects: Q Science > QD Chemistry
R Medicine
Divisions: Divisions > Division of Natural Sciences > Biosciences
Depositing User: M. Nasiriavanaki
Date Deposited: 21 Aug 2009 10:21 UTC
Last Modified: 09 Mar 2023 11:31 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/22410 (The current URI for this page, for reference purposes)

University of Kent Author Information

Jeffries, Peter.

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