Alternaria koreana sp. nov., a new pathogen isolated from leaf spot of ovate-leaf Atractylodes in South Korea

Background A new species within the genus Alternaria was isolated from the leaf spot of Atractylodes ovata in the Mungyeong and Hwabuk-myeon districts of the Gyeongbuk province of Korea. The leaves showed disease symptoms such as circular or irregular leaf spots and brown to dark brown with gray spo...

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Veröffentlicht in:Molecular biology reports 2022, Vol.49 (1), p.413-420
Hauptverfasser: Romain, Bekale Be Ndong Dimitri, Hassan, Oliul, Kim, Ju Sung, Chang, Taehyun
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creator Romain, Bekale Be Ndong Dimitri
Hassan, Oliul
Kim, Ju Sung
Chang, Taehyun
description Background A new species within the genus Alternaria was isolated from the leaf spot of Atractylodes ovata in the Mungyeong and Hwabuk-myeon districts of the Gyeongbuk province of Korea. The leaves showed disease symptoms such as circular or irregular leaf spots and brown to dark brown with gray spots at the center. The leaves also showed that concentric rings were surrounded with yellow halos. Methods and results Phylogenetic analysis was conducted using the sequence dataset of the internal transcribed spacer region and part of the glyceraldehyde-3-phosphate dehydrogenase. The RNA polymerase II second largest subunit, endopolygalacturonase, Alternaria major allergen gene, anonymous gene region, and translation elongation factor 1-alpha genes were used as well. Results showed that present fungal isolates were distinct from other species of the sect. Alternaria . Morphologically, the present isolates also differed from other members of the sect. Alternaria in their production of solitary conidia or conidial chains (two units) and conidial body features. Similarly, it exhibited moderate pathogenicity in the host plant. Conclusions This study described and illustrated A . koreana as a new species and the causal agent of the leaf-spot disease on A. ovata in Korea.
doi_str_mv 10.1007/s11033-021-06887-9
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The leaves showed disease symptoms such as circular or irregular leaf spots and brown to dark brown with gray spots at the center. The leaves also showed that concentric rings were surrounded with yellow halos. Methods and results Phylogenetic analysis was conducted using the sequence dataset of the internal transcribed spacer region and part of the glyceraldehyde-3-phosphate dehydrogenase. The RNA polymerase II second largest subunit, endopolygalacturonase, Alternaria major allergen gene, anonymous gene region, and translation elongation factor 1-alpha genes were used as well. Results showed that present fungal isolates were distinct from other species of the sect. Alternaria . Morphologically, the present isolates also differed from other members of the sect. Alternaria in their production of solitary conidia or conidial chains (two units) and conidial body features. Similarly, it exhibited moderate pathogenicity in the host plant. Conclusions This study described and illustrated A . koreana as a new species and the causal agent of the leaf-spot disease on A. ovata in Korea.</description><identifier>ISSN: 0301-4851</identifier><identifier>EISSN: 1573-4978</identifier><identifier>DOI: 10.1007/s11033-021-06887-9</identifier><identifier>PMID: 34739692</identifier><language>eng</language><publisher>Dordrecht: Springer Netherlands</publisher><subject>Allergens ; Alternaria ; Animal Anatomy ; Animal Biochemistry ; Biomedical and Life Sciences ; Conidia ; DNA-directed RNA polymerase ; Endopolygalacturonase ; Glyceraldehyde-3-phosphate dehydrogenase ; Histology ; Host plants ; Leafspot ; Leaves ; Life Sciences ; Morphology ; New species ; Original Article ; Pathogenicity ; Phylogeny ; RNA polymerase ; Spacer region ; Translation elongation</subject><ispartof>Molecular biology reports, 2022, Vol.49 (1), p.413-420</ispartof><rights>The Author(s), under exclusive licence to Springer Nature B.V. 2021</rights><rights>2021. 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subjects Allergens
Alternaria
Animal Anatomy
Animal Biochemistry
Biomedical and Life Sciences
Conidia
DNA-directed RNA polymerase
Endopolygalacturonase
Glyceraldehyde-3-phosphate dehydrogenase
Histology
Host plants
Leafspot
Leaves
Life Sciences
Morphology
New species
Original Article
Pathogenicity
Phylogeny
RNA polymerase
Spacer region
Translation elongation
title Alternaria koreana sp. nov., a new pathogen isolated from leaf spot of ovate-leaf Atractylodes in South Korea
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