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Kurose D.,Japan National Institute for Agro - Environmental Sciences | Kanegae Y.,Warm Region Horticulture Institute | Misawa T.,Hokkaido Research Organization | Ebihara Y.,Warm Region Horticulture Institute | And 5 more authors.
Journal of General Plant Pathology | Year: 2015

Yellow spots on leaves of white lace flower, Ammi majus, were found in Chiba Prefecture, Japan, in October 2006. The symptoms later developed into large brown spots. Brown lesions were also observed on the lower stem, and stem rot followed. A fungus was frequently isolated from the lesions, and the symptoms were reproduced after artificial inoculation. The causal fungus was identified as Pleospora herbarum based on morphology and molecular analysis. We named the new disease “yellow spot” (“ouhan-byo” in Japanese). © 2015, The Phytopathological Society of Japan and Springer Japan. Source


Usami T.,Chiba University | Matsubara C.,Chiba University | Kanegae Y.,Warm Region Horticulture Institute | Ebihara Y.,Warm Region Horticulture Institute
Journal of General Plant Pathology | Year: 2015

Unknown spot diseases were observed on calla lily leaves and spathes in Japan. Fungi isolated from spots were identified as Plectosphaerella sp. based on morphological characteristics. Inoculation and reisolation confirmed the pathogenicity of the fungi on calla lily. The fungi were distinct from known species of Plectosphaerella in terms of rDNA nucleotide sequences, growth rate, and specific pathogenicity on Zantedeschia species. This report is the first in the world literature of a spot disease of calla lily caused by Plectosphaerella sp. Management of this pathogen is important for calla lily cultivation because it degrades spathes having high commercial value. © 2015, The Phytopathological Society of Japan and Springer Japan. Source

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