Book reviews

The Plant Pathology section of the Department of Plant Pathology and Agricultural Entomology, University of Sydney, is host to a number of visiting scientists who are involved in the area of research concerned with the physiology and biochemistry of relationships between parasites and host plants. Professor A.H. Ellingboe, Director of the Genetics Programme, Michigan State University, is based in the Department from January December 1975 for a collaborate research project with Professor I.A.· Watson, Professor B.J. Deverall and Dr. J.K. Dineen (C.S.I.R.O. McMaster Laboratory of Serology) in the 'Genetics and Physiology of Host-Parasite Specificity.' He is working with temperature-sensitive mutants of Colletotrichum lindemuthianum and their virulence on bean, and also on relationships between virulence of isolates of Puccinia graminis tritici and the antigenicity of their infection structures. Dr. P. Fenn from the University of Wisconsin will be spending several years as a post-doctoral fellow and is involved in biochemical aspects of the response of wheat to infection by Puccinia graminis tritici with special reference to expression of resistance. Dr. D. R. Jones from the Canadian Department of Agriculture Research Institute, London, Ontario, has just arrived on a post-doctoral fellowship for a study of structural changes, visible by light and electron microscopy, during infection of host plants by rust fungi. Associate Professor Verna Higgins arrives shortly for a sabbatical year from the University of Toronto. Her major research interests have concerned phytoalexins and the reaction of Medicago and Trifolium to a number of fungal pathogens, and she has attempted to assess the role of fungal metabolism of phvtoalexins in virulence. N.B. This volume, and all back volumes, may be ordered through the American Phytopathological Society at a discount price of $US13.75 per copy (foreign) compared with the normal foreign price of $US15.50 per copy. Orders, with a remittance made payable to The American Phytopathological Society should be sent to the APS Business Office at 3340 Pilot Knob Road, St. Paul, Minnesota 55121, U.S.A.