ArticleAnnals of botany2012
The effect of environmental heterogeneity on RPW8-mediated resistance to powdery mildews in Arabidopsis thaliana.
Article in Annals of botany, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 28 citations in OpenAlex.
- Article
- Major Novel QTL for Resistance to Cassava Bacterial Blight Identified through a Multi-Environmental Analysis.Frontiers in plant science · 2017Article
- Current Status and Challenges in Identifying Disease Resistance Genes inFrontiers in plant science · 2017Review
- Stabilization of yield in plant genotype mixtures through compensation rather than complementation.Annals of botany · 2013Article
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1 author at 1 institution in 1 country.
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Abstract
BACKGROUND AND
aimsThe biotic and abiotic environment of interacting hosts and parasites may vary considerably over small spatial and temporal scales. It is essential to understand how different environments affect host disease resistance because this determines frequency of disease and, importantly, heterogeneous environments can retard direct selection and potentially maintain genetic variation for resistance in natural populations.
methodsThe effect of different temperatures and soil nutrient conditions on the outcome of infection by a pathogen was quantified in Arabidopsis thaliana. Expression levels of a gene conferring resistance to powdery mildews, RPW8, were compared with levels of disease to test a possible mechanism behind variation in resistance. KEY
resultsMost host genotypes changed from susceptible to resistant across environments with the ranking of genotypes differing between treatments. Transcription levels of RPW8 increased after infection and varied between environments, but there was no tight association between transcription and resistance levels.
conclusionsThere is a strong potential for a heterogeneous environment to change the resistance capacity of A. thaliana genotypes and hence the direction and magnitude of selection in the presence of the pathogen. Possible causative links between resistance gene expression and disease resistance are discussed in light of the present results on RPW8.
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