Perofascia is not monotypic: the description of the second taxon affecting the South American crop maca (Lepidium meyenii)

Choi, Young Joon; Thines, Marco; Choi, In Young; Shin, Hyeon Dong

doi:10.1007/s11557-017-1320-2

Cited by 6 publications

(4 citation statements)

References 32 publications

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“…lepidii , as the sample was collected from Lepidium didymum , a host not previously sampled for genetic analysis of the species. A second species of Perofascia was described as this manuscript was being prepared, but sequences were not available for comparison [ 75 ].…”

Section: Methodsmentioning

confidence: 99%

Multiple origins of downy mildews and mito-nuclear discordance within the paraphyletic genus Phytophthora

et al. 2018

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Phylogenetic relationships between thirteen species of downy mildew and 103 species of Phytophthora (plant-pathogenic oomycetes) were investigated with two nuclear and four mitochondrial loci, using several likelihood-based approaches. Three Phytophthora taxa and all downy mildew taxa were excluded from the previously recognized subgeneric clades of Phytophthora, though all were strongly supported within the paraphyletic genus. Downy mildews appear to be polyphyletic, with graminicolous downy mildews (GDM), brassicolous downy mildews (BDM) and downy mildews with colored conidia (DMCC) forming a clade with the previously unplaced Phytophthora taxon totara; downy mildews with pyriform haustoria (DMPH) were placed in their own clade with affinities to the obligate biotrophic P. cyperi. Results suggest the recognition of four additional clades within Phytophthora, but few relationships between clades could be resolved. Trees containing all twenty extant downy mildew genera were produced by adding partial coverage of seventeen additional downy mildew taxa; these trees supported the monophyly of the BDMs, DMCCs and DMPHs but suggested that the GDMs are paraphyletic in respect to the BDMs or polyphyletic. Incongruence between nuclear-only and mitochondrial-only trees suggests introgression may have occurred between several clades, particularly those containing biotrophs, questioning whether obligate biotrophic parasitism and other traits with polyphyletic distributions arose independently or were horizontally transferred. Phylogenetic approaches may be limited in their ability to resolve some of the complex relationships between the “subgeneric” clades of Phytophthora, which include twenty downy mildew genera and hundreds of species.

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Section: Methodsmentioning

confidence: 99%

Multiple origins of downy mildews and mito-nuclear discordance within the paraphyletic genus Phytophthora

et al. 2018

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“…On L. subulatum, Perofascia lepidii is described as the causal agent of the disease [53]; it is reported as Peronospora lepidii, subsequently accommodated into the Perofascia genus by Constantinescu and Fatehi [166], the sole pathogen described on this species. P. lepidii is also described on L. latifolium [83] and L. ruderale [51,83]. On the latter species, Hyaloperonospora parasitica is another downy mildew agent [51], whereas on L. perfoliatum, Hyaloperonospora lepidii-perfoliati is reported as the causal agent of this disease [43].…”

Section: Lepidium Sppmentioning

confidence: 99%

Fungal and Fungal-like Diseases of Halophytes in the Mediterranean Basin: A State-of-the-Art Review

Delli Compagni,

Pardossi,

Pecchia

2024

Horticulturae

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Halophytes are salt-tolerant plants growing in saline ecosystems and are spread throughout the Mediterranean area. Recently, there has been a renewed interest in agricultural exploitation of halophytes, but poor attention has been given to pest and disease management of these species. The objective of this review is to assess the extent and distribution of pathogenic fungal and fungal-like (Oomycota) organisms on major Mediterranean halophytes. We retrieved 92 references spanning over 100 years, with more than half published since 2000. Ascomycota is the best-represented phylum, and the order Pleosporales has the highest species diversity. The order Pucciniales prevails in Basidiomycota, whereas Peronosporales is the richest order within Oomycota. Most of the pathogenic species have been isolated from aboveground organs, especially from leaves. Portulaca oleracea is the species with the most associated pathogens (16) and records (28). Leveillula powdery mildew, caused by Leveillula taurica, is the most common disease among the selected species. Cakile maritima was found to be vulnerable to different mycotoxigenic Alternaria species. Strengthening the research on diseases of halophytes is essential to successfully grow these species and to evaluate the risks related to the presence of mycotoxigenic species, which is crucial for the effective exploitation of halophytes as crops.

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“…The observation of the high degree of host specificity in downy mildews has led to the reappraisal of the species diversity in many downy mildew species complexes, often focussed on economically important groups (Choi et al 2009(Choi et al , 2015a(Choi et al , 2017(Choi et al , 2018Thines et al 2009Thines et al , 2019Thines 2011;Voglmayr et al 2014;Görg et al 2017). The genus Peronospora harbours various species of economic impact, of which P. belbahrii (Thines et al 2009) and P. aquilegiicola (Thines et al 2019) are pathogens that have just recently emerged.…”

Section: Introductionmentioning

confidence: 99%

Peronospora aquilegiicola made its way to Germany: the start of a new pandemic?

et al. 2020

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Peronospora aquilegiicola is a destructive pathogen of columbines and has wiped out most Aquilegia cultivars in several private and public gardens throughout Britain. The pathogen, which is native to East Asia was noticed in England and Wales in 2013 and quickly spread through the country, probably by infested plants or seeds. To our knowledge, the pathogen has so far not been reported from other parts of Europe. Here, we report the emergence of the pathogen in the northwest of Germany, based on morphological and phylogenetic evidence. As the pathogen was found in a garden in which no new columbines had been planted recently, we assume that the pathogen has already spread from its original point of introduction in Germany. This calls for an increased attention to the further spread of the pathogen and the eradication of infection spots to avoid the spread to naturally occurring columbines in Germany and to prevent another downy mildew from becoming a global threat, like Peronospora belbahrii and Plasmopara destructor, the downy mildews of basil and balsamines, respectively.

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Perofascia is not monotypic: the description of the second taxon affecting the South American crop maca (Lepidium meyenii)

Cited by 6 publications

References 32 publications

Multiple origins of downy mildews and mito-nuclear discordance within the paraphyletic genus Phytophthora

Multiple origins of downy mildews and mito-nuclear discordance within the paraphyletic genus Phytophthora

Fungal and Fungal-like Diseases of Halophytes in the Mediterranean Basin: A State-of-the-Art Review

Peronospora aquilegiicola made its way to Germany: the start of a new pandemic?

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