An emerging fungal disease is spreading across the globe and affecting the blueberry industry.

Powdery mildew is an economically important disease caused by c. 1000 different fungal species. Erysiphe vaccinii is an emerging powdery mildew species that is impacting the blueberry industry.

Phylogeny and taxonomy of the genera of Erysiphaceae, part 6: (the " lineage" part 2).

This is the sixth contribution in a series devoted to the phylogeny and taxonomy of powdery mildews. This part includes our third treatment of the species of the genus . It continues the previous contribution on the phylogenetic-taxonomic assessment of the species belonging to the " lineage.

An In-Depth Evaluation of Powdery Mildew Hosts Reveals One of the World's Most Common and Widespread Groups of Fungal Plant Pathogens.

Powdery mildews are highly destructive fungal plant pathogens that have a significant economic impact on both agricultural and ecological systems worldwide. The intricate relationship between powdery mildews and their host plants has led to cospeciation. In this study, we conducted an extensive evaluation of powdery mildew hosts to provide an updated understanding of the host ranges and distributions of these fungi.

Phylogeny and taxonomy of the genera of Erysiphaceae, part 4: (the "Uncinula lineage").

This is the fourth contribution within an ongoing series dedicated to the phylogeny and taxonomy of powdery mildews. This particular installment undertakes a comprehensive evaluation of a group previously referred to as the "Uncinula lineage" within . The genus is too large to be assessed in a single paper; thus, the treatment of is split into three parts, according to phylogenetic lineages.

Phylogeny and taxonomy of the genera of Erysiphaceae, part 3: .

This contribution is part of a series devoted to the phylogeny and taxonomy of powdery mildews, with an emphasis on North American taxa. An overview of species is given, including references to ex-type sequences or, if unavailable, proposals for representative reference sequences for phylogenetic-taxonomic purposes. The new species is described, based on Mexican collections on × and × is reported for the first time worldwide on (Collected in Mexico) and on (collected in Arizona, USA).

Phylogeny and taxonomy of (s. lat.) revisited.

Phylogenetic and morphological analyses have been conducted on powdery mildew specimens on different and spp. from Asia, Europe and North America. The present study showed that collections of exhibit a high degree of morphological plasticity of the sexual morph, in contrast to their morphologically, rather uniform, asexual morph.

Phylogeny and taxonomy of the genera of Erysiphaceae, part 2: .

The second contribution to a new series devoted to the phylogeny and taxonomy of powdery mildews is presented. An overview of species is given, including references to ex-type sequences or, if unavailable, representative reference sequences for phylogenetic-taxonomic purposes are provided. The new species is described, and is reduced to synonymy with .

Phylogeny and taxonomy of the genera of Erysiphaceae, part 1: .

Powdery mildews are a monophyletic group of obligate plant pathogenic fungi in the family Erysiphaceae. Powdery mildews are economically important in that they cause damage to many agriculturally significant crops and plants in ecologically important habitats. In this contribution, we introduce a new series of publications focusing on the phylogeny and taxonomy of this group, with an emphasis on specimens collected from North America.

Phylogeny and taxonomy of spp. on , with a special emphasis on North American species.

The genus comprises over 1000 evergreen and deciduous species. In the Pacific Northwest Coast region of North America (PNWC), powdery mildews infecting deciduous spp. are well documented but less so on evergreen spp.

Beyond Nuclear Ribosomal DNA Sequences: Evolution, Taxonomy, and Closest Known Saprobic Relatives of Powdery Mildew Fungi () Inferred From Their First Comprehensive Genome-Scale Phylogenetic Analyses.

Powdery mildew fungi (), common obligate biotrophic pathogens of many plants, including important agricultural and horticultural crops, represent a monophyletic lineage within the . Within the , molecular phylogenetic relationships and DNA-based species and genera delimitations were up to now mostly based on nuclear ribosomal DNA (nrDNA) phylogenies. This is the first comprehensive genome-scale phylogenetic analysis of this group using 751 single-copy orthologous sequences extracted from 24 selected powdery mildew genomes and 14 additional genomes from , the fungal order that includes the .

Phylogeny and taxonomy of powdery mildew caused by species on hosts.

The genus (Fabaceae) consists of over 250 plant species located throughout the world. Powdery mildew, caused by species, is a common disease infecting these ecologically, ornamentally, and agriculturally important plants. In the present work, we conducted phylogenetic and taxonomic analyses on species colonizing hosts of the leguminous genus , using sequences from the internal transcribed spacer (ITS) and 28S genomic regions.

A global genetic analysis of herbarium specimens reveals the invasion dynamics of an introduced plant pathogen.

The introduction, spread, and impact of fungal plant pathogens is a critical concern in ecological systems. In this study, we were motivated by the rather sudden appearance of Acermacrophyllum heavily infected with powdery mildew. We used morphological and genetic analyses to confirm the pathogen causing the epidemic was Sawadaea bicornis.

Taxonomic revision of based on multi-gene DNA sequences, host preferences and morphology.

A taxonomic revision of the hitherto monotypic genus was conducted incorporating multi-gene sequence analyses, host preference data and morphological criteria. The sequenced loci included rDNA ITS, partial chitin synthase gene (1), as well as fragments of two unnamed orthologous genes (, ). The combined evidence led to a reassessment and a new neotypification of s.

Local Tree Diversity Suppresses Foliar Fungal Infestation and Decreases Morphological But Not Molecular Richness in a Young Subtropical Forest.

Leaf fungal pathogens alter their host species' performance and, thus, changes in fungal species composition can translate into effects at the tree community scale. Conversely, the functional diversity of tree species in a host tree's local neighbourhood can affect the host's foliar fungal infestation. Therefore, understanding the factors that affect fungal infestations is important to advance our understanding of biodiversity-ecosystem functioning (BEF) relationships.

Phylogeny and taxonomy of powdery mildew caused by species on hosts.

species (powdery mildews) on and hosts (Betulaceae subfam. Coryloideae) in Asia and North America are widespread pathogens on these economically and ecologically valuable nut crops. An improved understanding of their phylogeny and taxonomy is of ecological and applied importance.

A fungus-eat-fungus world: Digitopodium, with particular reference to mycoparasites of the coffee leaf rust, Hemileia vastatrix.

Digitopodium hemileiae was described originally in 1930 as Cladosporium hemileiae; growing as a mycoparasite of the coffee leaf rust (CLR), Hemileia vastatrix, in a sample of diseased leaves of Coffea canephora collected in the Democratic Republic of Congo. No cultures from this material exist. More recently, the type material was re-examined and, based on morphological features, considered to be incorrectly placed in Cladosporium.

Australia: A Continent Without Native Powdery Mildews? The First Comprehensive Catalog Indicates Recent Introductions and Multiple Host Range Expansion Events, and Leads to the Re-discovery of as a New Lineage of the Erysiphales.

In contrast to Eurasia and North America, powdery mildews (Ascomycota, Erysiphales) are understudied in Australia. There are over 900 species known globally, with fewer than currently 60 recorded from Australia. Some of the Australian records are doubtful as the identifications were presumptive, being based on host plant-pathogen lists from overseas.

Phylogeny and taxonomy of powdery mildew on species.

The phylogeny and taxonomy of powdery mildew on species is evaluated and discussed. Morphological and phylogenetic analyses revealed two new species and demonstrated that and should be reduced to synonymy and are referred to herein as . The two new species, and , previously hidden under (including ), is described on the basis of European, North American, and East Asian powdery mildew collections on var.

Multi-locus phylogeny and taxonomy of an unresolved, heterogeneous species complex within the genus Golovinomyces (Ascomycota, Erysiphales), including G. ambrosiae, G. circumfusus and G. spadiceus.

Background: Previous phylogenetic analyses of species within the genus Golovinomyces (Ascomycota, Erysiphales), based on ITS and 28S rDNA sequence data, revealed a co-evolutionary relationship between powdery mildew species and hosts of certain tribes of the plant family Asteraceae. Golovinomyces growing on host plants belonging to the Heliantheae formed a single lineage, comprised of a morphologically differentiated complex of species, which included G. ambrosiae, G.

Morphophylogenetic analyses revealed that constitutes a species complex.

(s. lat.) is a powdery mildew species occurring on a wide range of spp.

Phylogeny and taxonomy of , sp. nov., and sensu lato.

Powdery mildew of spp. is a significant disease in most cherry growing regions of Washington, USA. Powdery mildews on and were previously assigned to s.

sp. nov. (Erysiphaceae, Ascomycota), a powdery mildew species found on (Hydrangeaceae) with unusual appendages.

A powdery mildew (Erysiphales) has recently been collected on leaves of an ornamental shrub in Baihua Mountain, Beijing, China. Microscopic examination of the chasmothecia suggested a species belonging to Erysiphesect.Erysiphe, above all due to mycelioid chasmothecial appendages, although circinate apices of the appendages were rather in favour of Erysiphesect.