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최인영,Lamiya Abasova,Joon-Ho Choi,이총규,Hyeon-Dong Shin 한국균학회 2022 韓國菌學會誌 Vol.50 No.3
In Japan and China, Podosphaera pseudofusca causes powdery mildew in Fatoua villosa. During a taxonomic revision of Korean powdery mildew fungi, isolates newly collected from F. villosa were studied. Through morphological examination and molecular phylogenetic analyses of the internal transcribed spacer region and large subunit gene of rDNA, the powdery mildew fungus was identified as Podosphaera xanthii. In this study, we propose the merging of P. pseudofusca sensu Braun into the P. xanthii complex. To the best of our knowledge, this is the first report of Podosphaera powdery mildew on F. villosa in Korea.
Holomorph and Phylogeny of Erysiphe chloranthi on Chloranthus japonicus in Korea
최인영,Lamiya Abasova,최병기,박지현,신현동 한국균학회 2023 韓國菌學會誌 Vol.51 No.4
Erysiphe chloranthi is the only powdery mildew species (Erysiphaceae) found on Chloranthusplants belonging to the family Chloranthaceae. This species has long been known to bepresent in Japan and Korea and is hence regarded as endemic to East Asia. Examination ofseven Korean specimens revealed detailed morphological characteristics of the holomorphof this species. Short foot-cells of conidiophores are proposed as key characteristics thatdiffer from related species. Sequences of the internal transcribed spacer regions and largesubunit gene retrieved from four Korean samples confirm the phylogenetic position of thisspecies within the Erysiphe aquilegiae complex. These data may help elucidate the identityof this species and clarify the ambiguity of the E. aquilegiae complex.
최인영,Lamiya Abasova,Joon-Ho Choi,Young-Joon Choi,Hyeon-Dong Shin 한국균학회 2023 韓國菌學會誌 Vol.51 No.3
The Golovinomyces biocellatus complex is known to consist of powdery mildew from theGolovinomyces genus, associated with host plants from the Lamiaceae family. Recentmolecular phylogenetic analyses have resolved the taxonomic composition of this complex,and Golovinomyces biocellatus sensu stricto is considered to be a pathogen of Glechomaspecies, globally. However, this paper presents a new finding of Golovinomyces salviae onGlechoma longituba, besides its original host species of Salvia. This information was inferredby molecular phylogenetic analyses from the multi-locus nucleotide sequence dataset ofintergeneric spacer (IGS), internal transcribed spacer (ITS), large subunit (LSU) of rDNA, andglyceraldehyde-3-phosphate dehydrogenase (GAPDH) gene. Further, the asexual morphologyof this fungus is described and illustrated.
Erysiphe orixae , a Powdery Mildew Occurring on Orixa japonica in Korea
박지현,최인영,Lamiya Abasova,신현동 한국균학회 2023 韓國菌學會誌 Vol.51 No.4
Powdery mildew anamorphs were collected from Orixa japonica (Rutaceae) in Korea. Basedon the morphology and molecular phylogeny derived from the internal transcribed spacerregions and the large subunit gene of the rDNA, the fungus was identified as Erysiphe orixae. This powdery mildew species has been known to be endemic to Japan. This is the firstreport on E. orixae in Korea.
Erysiphe magnoliicola Comprises the Powdery Mildew Found on Magnolia kobus in Korea
Choi In-Young,Abasova Lamiya,Choi Joon-Ho,최병기,Shin Hyeon-Dong 한국균학회 2022 韓國菌學會誌 Vol.50 No.2
The powdery mildew found on Magnolia kobus was recorded as Microsphaera alni for the first time in Korea in 1975. After splitting M. alni into several distinct species, this mildew was regarded as Microsphaera magnifica, now Erysiphe magnifica. Since E. magnifica is known to be a North American species, the powdery mildew found on M. kobus in Korea was studied to clarify its identity. Based on morphological characteristics and sequencing results of the internal transcribed spacer and large subunit rDNA gene, the powdery mildew found on M. kobus in Korea was identified as Erysiphe magnoliicola.
Erysiphe cornicola, a Powdery Mildew Occurring on Cornus controversa in Korea
Choi In-Young,Abasova Lamiya,Choi Joon-Ho,Park Ji-Hyun,Shin Hyeon-Dong 한국균학회 2023 韓國菌學會誌 Vol.51 No.1
In Korea, Cornus controversa and C. florida are known as hosts of Erysiphe pulchra from section Microspharea of the genus Erysiphe. However, recent molecular-phylogenetic analyses on the internal transcribed spacer regions and large subunit gene of the rDNA revealed that the Erysiphe powdery mildew on C. controversa in Japan is in fact E. cornicola. To assess the taxonomic status of Erysiphe‒C. controversa association in Korea, isolates collected since 1987 were investigated and consequently identified as E. cornicola based on molecular‒phylogenetic analyses and new morphological traits. To our knowledge, this is the first study to confirm the presence of this powdery mildew in Korea.
최인영(In-Young Choi),Lamiya Abasova,Joon-Ho Choi,Hyeon-Dong Shin 한국식물병리학회 2022 식물병연구 Vol.28 No.2
Leaves of Chionanthus retusus were found to be damaged by leaf spot disease associated with a fungus in Iksan, Korea. Leaf spots were angular to irregular, vein-limited, scattered, 1-8 mm diameter, brownish-gray to dark brown when dry, with heavy fructification. The pathogen causes premature defoliation of C. retusus plant and was identified as Pseudocercospora chionanthi-retusi based on morphological and molecular-phylogenetic analyses. The phylogenetic tree was constructed using multi-locus DNA sequence data of partial actin (actA), partial translation elongation factor 1-alfa (tef1), partial DNA-directed RNA polymerase II second largest subunit (rpb2) genes, and internal transcribed spacer regions. Current study provides detail morphological description of P. chionanthi-retusi on C. retusus in Korea, with supports of phylogenetic analysis and pathogenicity test.
Erysiphe lonicerigena sp. nov., a Powdery Mildew Species Found on Lonicera harae
Choi In-Young,Abasova Lamiya,Choi Joon-Ho,Park Jung-Hee,Shin Hyeon-Dong 한국균학회 2023 Mycobiology Vol.51 No.2
A powdery mildew (Erysiphaceae) has been continuously collected on the leaves of Lonicera harae in the southern part of the Korean Peninsula, where this shrub is indigenous. Microscopic examination of the asexual morphs revealed that the current collections are differentiated from the all known Erysiphe species on Lonicera spp. by its longer conidiophores and longer conidia. Although the morphology of the chasmothecia is reminiscent of Erysiphe ehrenbergii and E. lonicerae, the specimens on L. harae differ from them in having smaller ascospores. A phylogenetic tree generated from a combined dataset of the internal transcribed spacer region and 28S rDNA gene sequences demonstrates that sequences obtained from three powdery mildew collections on L. harae clustered together as an independent species clade with high bootstrap values distant from other Erysiphe species on Lonicera, representing a species of its own. Based on morphological differences and molecular-phylogenetic results, the powdery mildew on L. harae is proposed as a new species, Erysiphe lonicerigena, and the holomorph of the fungus is described and illustrated in this study.
Holomorph and phylogeny of Neoerysiphe galeopsidis found on Lamium album subsp. barbatum in Korea
In-Young Choi,Abasova Lamiya,Joon-Ho Choi,Byoung-Ki Choi,Hyeon-Dong Shin 한국균학회 2023 韓國菌學會誌 Vol.51 No.2
Since the first record of an anamorph of Neoerysiphe galeopsidis (syn. Erysiphe galeopsidis) on Lamium album subsp. barbatum in Korea in 1992, no scientific information has been added. Seven additional anamorphic samples (2003–2022) and one teleomorphic collection (November 2022) of N. galeopsidis on L. album subsp. barbatum in Korea enabled us to provide holomorph morphology and phylogeny of this powdery mildew for the first time. The presence of aerial hyphae around the chasmothecia was proposed and documented for the first time.
Lee Kui-Jae,Choi In-Young,Abasova Lamiya,Choi Joon-Ho,Park Jung-Hee,Shin Hyeon-Dong 한국균학회 2023 韓國菌學會誌 Vol.51 No.2
Dark brown leaf molds growing in a vein-limited pattern have been continuously observed on the lower leaf surface of Fatoua villosa in Korea. Fifteen samples deposited in the Korea University herbarium were examined for fungal morphological characterization. Two monoconidial isolates were obtained in 2022, and molecular analysis was performed based on a combined multigene dataset of the internal transcribed spacer (ITS) region and partial actin (actA), translation elongation factor 1-alpha (tef1), and DNA-directed RNA polymerase II second-largest subunit (rpb2). Based on morphological features and molecular phylogenetic analysis, the fungus Pseudocercospora fatouae was identified. To the best of our knowledge, it is the first study reporting the presence of P. fatouae on F. villosa in Korea.