Epidemiological consequences of plant disease resistance

Deadman, M. L.

doi:10.1007/1-4020-4581-6_5

Cited by 9 publications

(9 citation statements)

References 46 publications

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“…Diseases of crops provide some of the most powerful examples of how the link from evolution to ecology may operate. In fact, the whole concept of resistance breeding in crops is based on the underlying assumption of a direct evolution‐to‐ecology pathway, so that a newly evolved resistance is expected to have a direct impact on epidemiology (Deadman ). The boom‐and‐bust dynamics in agricultural pathosystems provide the most convincing evidence for rapid evolution and its impact on spatial population dynamics.…”

Section: The Temporal Scale Of Host–parasite Interactionsmentioning

confidence: 99%

“…During the ‘boom’ phase, a resistant cultivar with a single major resistance gene is introduced into an agricultural system to reduce disease prevalence and is employed widely. However, the ‘boom’ phase is frequently followed by the ‘bust’ phase when an evolutionary change in the pathogen population breaks down host resistance (McDonald and Linde ; Deadman ). Consequently, the newly evolved pathotype rapidly spreads and infects all fields with the previously resistant cultivar.…”

Section: The Temporal Scale Of Host–parasite Interactionsmentioning

confidence: 99%

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Understanding the ecology and evolution of host–parasite interactions across scales

Penczykowski

Laine

Koskella

2015

Evolutionary Applications

171

132

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Predicting the emergence, spread and evolution of parasites within and among host populations requires insight to both the spatial and temporal scales of adaptation, including an understanding of within‐host up through community‐level dynamics. Although there are very few pathosystems for which such extensive data exist, there has been a recent push to integrate studies performed over multiple scales or to simultaneously test for dynamics occurring across scales. Drawing on examples from the literature, with primary emphasis on three diverse host–parasite case studies, we first examine current understanding of the spatial structure of host and parasite populations, including patterns of local adaptation and spatial variation in host resistance and parasite infectivity. We then explore the ways to measure temporal variation and dynamics in host–parasite interactions and discuss the need to examine change over both ecological and evolutionary timescales. Finally, we highlight new approaches and syntheses that allow for simultaneous analysis of dynamics across scales. We argue that there is great value in examining interplay among scales in studies of host–parasite interactions.

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Section: The Temporal Scale Of Host–parasite Interactionsmentioning

confidence: 99%

Section: The Temporal Scale Of Host–parasite Interactionsmentioning

confidence: 99%

Understanding the ecology and evolution of host–parasite interactions across scales

Penczykowski

Laine

Koskella

2015

Evolutionary Applications

171

132

View full text Add to dashboard Cite

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“…Horizontal resistance may be less complete, but is usually more stable, in that multiple loci of virulence genes would be required to overcome quantitative resistance. The existence of resistance and virulence genes in host and pathogen are the result of evolutionary development of obligate parasites, such as the rust fungi (Deadman, 2006). Thus within the original distribution of a pathogen, resistance genes in host plant populations could well mask the potential for destruction that may be present in the many genotypes of the pathogen that might exist.…”

Section: Genetic Variation Potential Impacts Of Different Strains On mentioning

confidence: 99%

A summary of information on the rust <i>Puccinia psidii</i> Winter (guava rust) with emphasis on means to prevent introduction of additional strains to Hawaii

Loope¹

2010

Open-File Report

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A stand of rose apple (Syzygium jambos) on a roadside in Haiku, Maui, Hawaii, March 2008, after new leaf growth had been largely exhausted. Inset shows closeup of rose apple leaves in the same area covered with spores of the rust Puccinia psidii in April 2007, when new growth was still being produced prolifically. The stand has been repeatedly defoliated by the single genotype of Puccinia psidii, the neotropical rust fungus that was first noted in Hawaii in April 2005. Other genotypes of the rust that attack rose apple mildly or not at all apparently exist in Puerto Rico and elsewhere. Both photos by Forest and Kim Starr, used with permission.

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“…(vi) the tolerance, which is the capacity of the host plant to incur less damage at a given infection severity [53];…”

Section: How To Link the Control Of Epidemics To Their Pluriannual Dymentioning

confidence: 99%

Controlling Cyclic Epidemics on the Crops of the Agroecosystems: Articulate all the Dimensions in the Formalisation, but Look for a Local Solution

Bousset

Chèvre

2012

Journal of Botany

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In agroecosystems, crop yield is reduced by epidemics. At the field scale, epidemiology succeeded knowledge percolation across theory, empirical studies, and recommendations to actors. Achieving similar success at the landscape level requires understanding of ecosystems. The aim of this manuscript is to formalize cyclic epidemics, in which development depends on interaction in space and in time between host plants, pathogens, environment, and human actions. In agroecosystems, human actions exacerbate homogeneities alternating with sharp discontinuities on scales of time and space. The dynamics of cyclic epidemics takes discontinuities into account. This allows decomposing control at the field and at the landscape scales into goals to reach, corresponding to the components of the pluriannual dynamics of epidemics. Articulating disciplinary concepts open the prospect of optimization by identification of one’s potential contributions. Finally, we propose that cyclic epidemics could be controlled by looking for a local solution, in a decentralized manner.

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Epidemiological consequences of plant disease resistance

Cited by 9 publications

References 46 publications

Understanding the ecology and evolution of host–parasite interactions across scales

Understanding the ecology and evolution of host–parasite interactions across scales

A summary of information on the rust <i>Puccinia psidii</i> Winter (guava rust) with emphasis on means to prevent introduction of additional strains to Hawaii

Controlling Cyclic Epidemics on the Crops of the Agroecosystems: Articulate all the Dimensions in the Formalisation, but Look for a Local Solution

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