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Article: Dispersal and disease gradients of anther-smut infection of Silene alba at different life stages.
- Article from:
- Ecology
- Article date:
- September 1, 1995
- Author:
CopyrightCOPYRIGHT 1995 Ecological Society of America. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Key words: anther-smut disease; plant-pathogen; Silene alba; spore and disease spread; Ustilago violacea.
INTRODUCTION
Disease transmission depends on two fundamental processes: dispersal of infective propagules and successful infection of hosts by those propagules. In the case of sessile hosts, a common net result of these processes is that diseased individuals are spatially aggregated (Pielou 1965, Burdon 1987, van den Bosch et al. 1988, Augspurger 1990). Dispersal processes contribute to the development of disease foci because dispersal is strongly distance dependent. However, disease foci could also develop despite extensive spore dispersal if ...
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