PATHOGEN DIVERSITY: CONTRIBUTIONS TO APPLIED AND BASIC BANANA RESEARCH
Determining the extent and types of variation that occur in plant pathogens is a prerequisite for understanding their biology, distribution and pathology. Both applied and basic goals are addressed with these data. Among the practical objectives are the identification and monitoring of specific pathogens in and outside a given production area. Identification tools are useful in quarantine situations and are most valuable when they keep exotic pathogens out of countries or predict or promptly disclose new disease outbreaks. Accurate diagnoses are critical when trade embargos are involved that would impact commerce and production. Forensic plant pathology, a new field that addresses the intentional movement of harmful agents, will require the development of new, more accurate identification tools. These tools can help formulate disease management strategies or provide basic information on disease epidemiology. They can assess pathogen spread or help identify factors that are associated with dispersal and establishment. Breeding and improvement programmes require thorough understandings of pathogenic diversity. Prevalent or important pathotypes should be used to screen new hybrids, and their geographic distributions should be assessed when germplasm is deployed. Diversity data provide information on the breeding strategies and population structures of pathogens. By understanding how, and to what extent, a pathogen adapts to different host genotypes and strategies, informed decisions can be made on disease management. These data can also be used to estimate the durability of host resistance and other control measures. Specific examples of the ways in which pathogen diversity data have been used will be discussed, as will significant areas for future research.
Ploetz, R.C. (2009). PATHOGEN DIVERSITY: CONTRIBUTIONS TO APPLIED AND BASIC BANANA RESEARCH . Acta Hortic. 828, 181-192
disease diagnosis, disease management, forensic plant pathology, pathogen variability, quarantine, pathogen exclusion, pathogen eradication