Pygmy waterlily (Nymphaea tetragona, Nymphaeaceae) is a perennial aquatic herb with floating leaves and beautiful flowers. Leaf spot on pygmy waterlilies appeared in 2009 at several locations in Korea, e.g., Suwon in 2009, Yangpyeong in 2011, and Seoul in 2014. The leaf spots were circular to irregular, small, and brown in the center with a dark brown… (More)
A zygomycete fungus, Choanephora cucurbitarum is a plant pathogen that causes blossom rot in cucurbits and other plants. Here we report the genome sequence of Choanephora cucurbitarum KUS-F28377 isolated from squash. The assembled genome has a size of 29.1 Mbp and 11,977 protein-coding genes. The genome analysis indicated that C. cucurbitarum may employ a… (More)
Hibiscus syriacus, as a national flower of Korea, is most popularly used for ornamental purposes and includes numerous cultivars, and it is widely planted in temperate zones that feature hot summers. We investigated Choanephora flower rot on H. syriacus from 2012 to 2014 in Korea and Japan and confirmed Choanephora infection in several localities in both… (More)
Fusarium wilt of zucchini in Jeonju, Korea, was first noticed in May 2013. Symptoms included wilting of the foliage, drying and withering of older leaves, and stunting of plants. Infected plants eventually died during growth. Based on morphological characteristics and phylogenetic analyses of the molecular markers (internal transcribed spacer rDNA and… (More)
In August 2013, blossom blight and wet rot were observed on flowers of Abelmoschus manihot in a private garden in Hongcheon County, Korea. The fungus initially infected fading flower petals, then expanded to encompass entire flowers and finally resulted in flower desiccation and fall. The causal fungus was identified by morphological characterization and… (More)
In September 2013, we discovered sooty mould growing on kenaf with the extrafloral nectaries in Iksan, Korea and identified the causative fungus as Leptoxyphium kurandae based on morphological characteristics and phylogenetic analyses. This is the first report of sooty mould caused by L. kurandae on kenaf in Korea and globally.
Since 2013, Paeonia suffruticosa (tree peony) shrubs in Korea have been found to be infected with powdery mildew. Phylogenetic analyses based on both ITS rDNA sequences and the morphological characters of the anamorph and teleomorph stages determined the powdery mildew to be Erysiphe paeoniae. This is the first case of E. paeoniae infection on a host plant… (More)
Postharvest root rot of Codonopsis lanceolata was found at storage piles in a market in Seoul, Korea, 2012. Based on the morphological characteristics and molecular analyses of the ITS rDNA and D1/D2 region of the LSU, the causal fungus was identified as Rhizopus oryzae. This is the first report of Rhizopus-associated root rot on Codonopsis lanceolata.
Cissus rhombifolia was found to be infected with a powdery mildew for the first time in the Czech Republic in 2008. The fungus was identified as Erysiphe necator based on the morphological characteristics of the anamorph. This is the second report of E. necator infection of C. rhombifolia in Europe.
Leaf spot was observed on garden phlox (Phlox paniculata) in Yesan, Korea, in 2008. Based on the morphological characteristics of the fungus and the host genus, the isolate was identified as Septoria phlogis. Internal transcribed spacer sequences of rDNA of the isolate confirmed its close affinity to previously known species of Septoria. In 2010 and 2011,… (More)