Stagonosporopsis pogostemonis: A Novel Ascomycete Fungus Causing Leaf Spot and Stem Blight on Pogostemon cablin (Lamiaceae) in South China

Pogostemon cablin is one of the well-known Southern Chinese medicinal plants with detoxification, anti-bacterial, anti-inflammatory, and other pharmacological functions. Identification and characterization of phytopathogens on P. cablin are of great significance for the prevention and control of dis...

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Published in:Pathogens (Basel) 2021-08, Vol.10 (9), p.1093
Main Authors: Dong, Zhang-Yong, Huang, Ying-Hua, Manawasinghe, Ishara S., Wanasinghe, Dhanushka N., Liu, Jia-Wei, Shu, Yong-Xin, Zhao, Min-Ping, Xiang, Mei-Mei, Luo, Mei
Format: Article
Language:English
Subjects:
Antiinfectives and antibacterials
Blight
Detoxification
Didymellaceae
Disease
Disease control
DNA-directed RNA polymerase
Herbal medicine
Inflammation
Leafspot
Leaves
Medicinal plants
Morphology
Nucleotide sequence
Pathogenicity
Pathogens
phoma-like
Phylogenetics
phylogeny
Pogostemon cablin
RNA polymerase II
Sequence analysis
Stem blight
Tubulin
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Summary:Pogostemon cablin is one of the well-known Southern Chinese medicinal plants with detoxification, anti-bacterial, anti-inflammatory, and other pharmacological functions. Identification and characterization of phytopathogens on P. cablin are of great significance for the prevention and control of diseases. From spring to summer of 2019 and 2020, a leaf spot disease on Pogostemon cablin was observed in Guangdong Province, South China. The pathogen was isolated and identified based on both morphological and DNA molecular approaches. The molecular identification was conducted using multi-gene sequence analysis of large subunit (LSU), the nuclear ribosomal internal transcribed spacer (ITS), beta-tubulin (β-tubulin), and RNA polymerase II (rpb2) genes. The causal organism was identified as Stagonosporopsis pogostemonis, a novel fungal species. Pathogenicity of Stagonosporopsis pogostemonis on P. cablin was fulfilled via confining the Koch’s postulates, causing leaf spots and stem blight disease. This is the first report of leaf spot diseases on P. cablin caused by Stagonosporopsis species worldwide.
ISSN:2076-0817
2076-0817
DOI:10.3390/pathogens10091093