Niche partitioning of the genetic lineages of the oak powdery mildew complex

Feau, Nicolas; Lauron-Moreau, Aurélien; Piou, Dominique; Marçais, Benoît; Dutech, Cyril; Desprez‐Loustau, Marie‐Laure

doi:10.1016/j.funeco.2011.12.003

Cited by 45 publications

(37 citation statements)

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“…This might be explained by a higher sensitivity of infected buds to low temperatures (Jarvis et al 2002). However, Feau et al (2011) could not observe any geographic pattern in flag shoot frequency (resulting from the development of infected buds) in oak regenerations in an extensive survey in France. Relatively high frequencies of flag shoots were sometimes observed in areas with continental climate.…”

Section: Temperaturementioning

confidence: 64%

“…However, the disease was not reported in Europe before 1907 when sudden severe outbreaks were observed; the causal pathogen was then reported as invasive. It identity and origin was the subject of considerable debate in the years following the emergence of oak powdery mildew (reviewed in Mougou et al 2008 andDesprezLoustau et al 2011). The use of molecular tools has recently allowed more precise characterization of the causal agent.…”

Section: Introductionmentioning

confidence: 99%

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European oak powdery mildew: impact on trees, effects of environmental factors, and potential effects of climate change

Marçais

Desprez‐Loustau

2012

Annals of Forest Science

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140

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• Context Powdery mildew is one of the most common diseases of oaks in Europe. After alarming reports in the beginning of the twentieth century following the presumed introduction of the invasive fungus, the disease has become familiar to foresters. However, its impact may vary greatly according to intrinsic and extrinsic factors. • Aims We aimed at providing updated and synthesised information on the impact of powdery mildew on oak and on the effects of environment on disease. • Methods A comprehensive literature review was performed, including old reports of the early epidemics to more recent data. • Results Tree growth patterns are of critical importance to explain the severity of the disease and the differences between juvenile and mature trees. A critical element, especially for infection of mature trees, is the availability of spores during the production of the first leaf flush. High disease impact is often related to modified growth patterns, either by environmental factors (insects or frost) or silvicultural practices (e.g., coppicing). • Conclusion Powdery mildew can have important impacts in natural oak regenerations and a significant role in decline of mature trees. Climate change might influence the disease severity mainly by altering the host pathogen phenological synchrony. Process-based models are required for reliable predictions.

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Section: Temperaturementioning

confidence: 64%

Section: Introductionmentioning

confidence: 99%

European oak powdery mildew: impact on trees, effects of environmental factors, and potential effects of climate change

Marçais

Desprez‐Loustau

2012

Annals of Forest Science

Self Cite

140

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“…For example, different stems of the same plant can be infected by different genotypes of anther smut (59), and two cryptic species of powdery mildew can co-occur on the same host individuals (Erysiphe alphitoides and Erysiphe quercicola) in natural oak stands (42). Thus, cells or localized collections of cells within a tissue may be appropriately considered a patch within the metacommunity framework, whereas systemic transport and infection distant from the point of pathogen entry represent among-patch movement (Figure 1a,b).…”

Section: Host Cells and Tissues As Patchesmentioning

confidence: 99%

A Multiscale Approach to Plant Disease Using the Metacommunity Concept

Borer

Laine

Seabloom

2016

Annu. Rev. Phytopathol.

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Plant disease arises from the interaction of processes occurring at multiple spatial and temporal scales. With new tools such as next-generation sequencing, we are learning about the diversity of microbes circulating within and among plant populations and often coinhabiting host individuals. The proliferation of pathogenic microbes depends on single-species dynamics and multispecies interactions occurring within and among host cells, the spatial organization and genetic landscape of hosts, the frequency and mode of transmission among hosts and host populations, and the abiotic environmental context. Here, we examine empirical evidence from these multiple scales to assess the utility of metacommunity theory, a theoretical framework developed for free-living organisms to further our understanding of and assist in predicting plant-pathogen infection and spread. We suggest that deeper understanding of disease dynamics can arise through the application of this conceptual framework at scales ranging from individual cells to landscapes. In addition, we use this multiscale theoretical perspective to synthesize existing knowledge, generate novel hypotheses, and point toward promising future opportunities for the study of plant pathogens in natural populations.

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“…Feau et al. ), but it needs to have the adequate molecular tools for obtaining correct biological inferences.…”

Section: Introductionmentioning

confidence: 99%

Rapid identification of polymorphic sequences in non‐model fungal species: the PHYLORPH method tested in Armillaria species

et al. 2016

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Development of molecular markers for phylogenetic, population genetics and phylogeographic studies remains arduous in non-model species with low or no genomic resources. Sequencing the whole or a large part of the genome of the target species using next-generation sequencing technologies is considered a promising method, although it still needs a large investment in bioinformatics. To quickly find polymorphic markers in fungal species, we tested an alternative method, named PHYLORPH. This method allows users to quickly target polymorphic regions of single copy genes in fungi using public databases. We applied this method to Armillaria species, which are important fungal pathogens and saprophytes playing a central role in the dynamics of forest ecosystems worldwide. We isolated 32 single copy genes with numerous single nucleotide polymorphism (SNP) sites. A genetic analysis of two French populations validated the polymorphism of 80 among 92 SNPs tested, and seven of these sequences exactly reconstructed the known phylogenetic tree of four tested Armillaria species. These results confirmed that the PHYLORPH method is efficient to identify various markers at both the intra-and interspecific levels for fungal species with no or few previous genetic markers.

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Niche partitioning of the genetic lineages of the oak powdery mildew complex

Cited by 45 publications

References 46 publications

European oak powdery mildew: impact on trees, effects of environmental factors, and potential effects of climate change

European oak powdery mildew: impact on trees, effects of environmental factors, and potential effects of climate change

A Multiscale Approach to Plant Disease Using the Metacommunity Concept

Rapid identification of polymorphic sequences in non‐model fungal species: the PHYLORPH method tested in Armillaria species

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