Fine Structure of the Host-Parasite Interfaces in Mycoparasitism
| Autor: | and M A Ehrlich, H G Ehrlich |
|---|---|
| Rok vydání: | 1971 |
| Předmět: | |
| Zdroj: | Annual Review of Phytopathology. 9:155-184 |
| ISSN: | 1545-2107 0066-4286 |
| DOI: | 10.1146/annurev.py.09.090171.001103 |
| Popis: | This review is not intended as a computerized compendium of literature citations but as a personalized discussion utilizing selected references in ad dition to unpublished data to synthesize previous work, illustrate the present state of knowledge, and propose fruitful areas for further investigations. The emphasis throughout is on broad concepts as they relate to the host parasite interface in plant disease, rather than on minute details. Every host-parasite-environment combination is unique in itself, and every investi gator has his own technical "touch". It is, therefore, not unexpected that micrographs of the same disease syndrome may differ from one another in minor (or even major) ways, but a sufficient body of data has now accumu lated so that common factors are emerging. It seems most fruitful to place emphasis on these common factors and selective coverage of the literature so that our allotted space may be used to convey the vital concepts that are evolving as a result of just a decade of research in this area of phytopatho iogical research. Particular emphasis has been placed on the literature that has appeared since the reviews of Hawker (52) and Bracker (11). A living fungal cell (or part of a living cell) may enter a living host cell and establish (at least temporarily) a functional relationship there via haustorial formation as in the rusts and mildews, or via thallus formation as in cabbage clubroot. We believe that on the basis of ultrastructural research to date, three, or possibly four, major haustorial types can be distinguished from one another. The type of morphological association between the haus torium and the host cell is onc of the diagnostic criteria on which the separa tion into types is made. For purposes of this discussion, Type I is represented by the uredial stage of Puccinia graminis tritici; Type II by the conidial stage of Erysiphe graminis,' Type III by Phytophthora infestans; and the still uncertain type IV by various Peronospora spp. |
| Databáze: | OpenAIRE |
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