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Leveillula buddlejae sp. nov., a new species with an asexual morph resembling phylogenetically basal Phyllactinia species.

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Abstract An asexual morph of a powdery mildew was found on Buddleja asiatica (Scrophulariaceae) in Nepal. The morphological traits of this powdery mildew strongly resemble those of Phyllactinia species (including… Click to show full abstract

Abstract An asexual morph of a powdery mildew was found on Buddleja asiatica (Scrophulariaceae) in Nepal. The morphological traits of this powdery mildew strongly resemble those of Phyllactinia species (including Ovulariopsis) belonging to a phylogenetically basal group closely related to Leveillula species, but phylogenetic examinations and analyses clearly showed that this fungus pertains to Leveillula. Within the latter genus, it seems to be allied to L. duriaei, but clearly differs from this species in having conidiophores arising from superficial hyphae and narrower conidia with different length/width ratios. Therefore, the powdery mildew on B. asiatica is described as Leveillula buddlejae sp. nov.

Keywords: phylogenetically basal; phyllactinia species; buddlejae nov; asexual morph; leveillula buddlejae

Journal Title: Mycoscience
Year Published: 2018

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