Book chapter
Pathogenicity, host-specificity, and population biology of tapesia spp., causal agents of eyespot disease of cereals
Advances in Botanical Research, pp.225-258
Elsevier Science & Technology
2000
Handle:
https://hdl.handle.net/2376/110203
Abstract
Eyespot is an important stem-base disease of cereal crops in temperate regions. Cultural, genetic and molecular criteria have been used to separate the fungi responsible into two species, Tapesia yallundae (previously W-type) and T. acuformis (previously R-type). Discovery of the apothecial sexual stage (teleomorph) of Tapesia yallundae on straw stubble was a key factor in this change for a pathogen previously believed to be asexual (anamorph: Pseudocercosporella herpotrichoides). Sexual reproduction is controlled by a two-allele heterothallic system in both species, although mating appears to be rare in T. acuformis. Infection of cereal hosts is achieved by formation of multicellular plaques, and the colonization process is described. The host range includes wild grass species as well as small-grain cereals, and new genetic sources of resistance to the disease have been identified in Triticum species and wild relatives. Recent advances in the molecular genetics of the pathogens will aid analysis of pathogenic variation in eyespot.
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Details
- Title
- Pathogenicity, host-specificity, and population biology of tapesia spp., causal agents of eyespot disease of cereals
- Creators
- John A Lucas - IACR-Long Ashton Research Station, Department of Agricultural Sciences, University of Bristol, Long Ashton, Bristol BS41 9AF, UKPaul S Dyer - Microbiology Division, School of Biological Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, UKTimothy D Murray - Department of Plant Pathology, Washington State University, Pullman, WA 99164-6430, USA
- Publication Details
- Advances in Botanical Research, pp.225-258
- Academic Unit
- Plant Pathology, Department of
- Publisher
- Elsevier Science & Technology
- Identifiers
- 99900547334901842
- Language
- English
- Resource Type
- Book chapter