A Novel Subspecies of Didymella acutilobae Causing Leaf Spot in East Asian Hogweed.

IF 1.6 4区生物学 Q2 AGRONOMY Mycobiology Pub Date : 2024-12-06 eCollection Date: 2024-01-01 DOI:10.1080/12298093.2024.2424016

Gyo-Bin Lee, Weon-Dae Cho, Wan-Gyu Kim

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Abstract

During disease surveys in 2021 and 2022, outbreaks of leaf spot were observed in East Asian hogweed (Heracleum moellendorffii) plants in fields located in Pyeongchang and Yeongwol, Gangwon Province, Korea. The disease incidence in the fields ranged from 2% to 50%. Based on the morphological and cultural characteristics, four single-conidium fungal isolates from the leaf spot symptoms were identified as Phoma sp. The phylogenetic analyses based on the combined sequences from the four genes (LSU, ITS, TUB2, and RPB2) indicated that the isolates clustered very closely with Didymella acutilobae. However, the morphological and cultural characteristics of the isolates exhibited somewhat distinct differences from those of D. acutilobae, suggesting that the isolates correspond to a novel subspecies. Pathogenicity tests revealed that the isolates caused leaf spot in East Asian hogweed plants. This is the first report of D. acutilobae subsp. heraclei subsp. nov. causing leaf spot in East Asian hogweed.

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来源期刊

Mycobiology AGRONOMYMYCOLOGY-MYCOLOGY

CiteScore

3.90

自引率

5.30%

发文量

审稿时长

22 weeks

期刊介绍： Mycobiology is an international journal devoted to the publication of fundamental and applied investigations on all aspects of mycology and their traditional allies. It is published quarterly and is the official publication of the Korean Society of Mycology. Mycobiology publishes reports of basic research on fungi and fungus-like organisms, including yeasts, filamentous fungi, lichen fungi, oomycetes, moulds, and mushroom. Topics also include molecular and cellular biology, biochemistry, metabolism, developmental biology, environmental mycology, evolution, ecology, taxonomy and systematics, genetics/genomics, fungal pathogen and disease control, physiology, and industrial biotechnology using fungi.