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1 The literature survey for this review was completed in December, 1955. 2 Paper No. 921, Miscellaneous Journal Series Article, Minnesota Agricultural Experiment Station. DEVAY symbiosis in a broader sense, to include all associations in which dissimilar organisms live together in close spatial relationship without necessarily any benefit or detriment to either party of the association. This is the way in which de Bary (7) originally used the term to designate all degrees of para sitism, commensalism, and mutualism. An excellent discussion and interpre tation of de Bary's (7) use of the term symbiosis has been publis.hed by Hertig et al. (8). In this review symbiosis will be used in a restricted sense, to designate re lationships between taxonomically different organisms in which there is a permanent or semi-permanent physical union between the individuals. Rela tionships which do not involve a union of the participating organisms will be generally termed nonsymbiotic. SYMBIOTIC RELATIONSHIPS When dissimilar fungi live together in a relationship which is contiguous, and therefore symbiotic, they may have little or no effect on one another (neutralistic symbiosis); one or both participants may benefit from the rela tionship without causing any injurious effects on the other (mutualistic
Annual Review of Microbiology – Annual Reviews
Published: Oct 1, 1956
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