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Survival and Germination of Fungal Sclerotia

Copyright 1971. All rights reserved SURVIVAI. AND GERMINATION OF FUNGAL SCLEROTIA J. R. COLEy-SMITH AND R. C. COOKE Department of Botany, University of Hull, England, and Department of Botany, University of Sheffield, Eflgiand Although sclerotia are important perennating structures of many plant pathogens they rarely receive the attention their importance warrants. This is surprising, since sclerotia have many structural and behavioral features that distinguish them from other fungal propagules. Although the literature on sclerotia is diffuse and in places meager, there is enough information available to attempt a synthesis of certain aspects of their biology. The morphogenesis of sclerotia has been described ( 2 1 ) and other as­ pects of development will form the subject of a future review. This paper discusses structural features that are important in survival and germination. The most-studied sclerotium-forming fungi are plant pathogens and where possible the behavior of sclerotia is discussed in relation to host-parasite interactions. STRUCTURE OF SCLEROTIA Sclerotia may be broadly divided into two types, those that possess rind tissue and those that do not. Among well-known exceptions in which no rind is present is the sclerotium of Rhizoctonia so la n i which consists of a mass of http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Annual Review of Phytopathology Annual Reviews
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