논문 (학술지)
Characterization of <i>Alternaria porri</i> causing onion purple blotch and its antifungal compound magnolol identified from <i>Caryodaphnopsis baviensis</i>
등록번호 | - | SCI 구분
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※구분 : SCI(SCIE포함), 비SCI |
SCI |
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저자명 (주·공동저자) | 김민영; 한재우; 김헌; 김진철; Quang Le Dang; 최경자 ※ 과제 참여정보와 일치하는 연구자 상세정보로 정확하지 않을 수 있습니다. 동일저자 논문보기 |
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논문구분 | 국외전문학술지 | 학술지명 | PLoS One |
ISSN | 1932-6203 | 학술지 출판일자 | 2022-01-20 |
학술지 볼륨번호 | 17(1) | 논문페이지 | e0262836 ~ e0262836 |
학술지 임팩트팩터 | 3.24 | 기여율 | 90 % |
DOI | doi.org/10.1371/journal.pone.0262836 | ||
초록 | Alternaria porri (Ellis) Clf. causes purple blotch disease on Allium plants which results in the reduction of crop yields and quality. In this study, to efficiently find natural antifungal compounds against A. porri, we optimized the culture condition for the spore production of A. porri and the disease development condition for an in vivo antifungal assay. From tested plant materials, the methanol extracts derived from ten plant species belonging to the families Cupressaceae, Fabaceae, Dipterocarpaceae, Apocynaceae, Lauraceae, and Melastomataceae were selected as potent antifungal agents against A. porri. In particular, the methanol extract of Caryodaphnopsis baviensis (Lec.) A.-Shaw completely inhibited the growth of A. porri at a concentration of 111 mug/ml. Based on chromatographic and spectroscopic analyses, a neolignan compound magnolol was identified as the antifungal compound of the C. baviensis methanol extract. Magnolol showed a significant inhibitory activity against the spore germination and mycelial growth of A. porri with IC50 values of 4.5 and 5.4 mug/ml, respectively. Furthermore, when magnolol was sprayed onto onion plants at a concentration of 500 mug/ml, it showed more than an 80% disease control efficacy for the purple blotch diseases. In terms of the antifungal mechanism of magnolol, we explored the in vitro inhibitory activity on individual oxidative phosphorylation complexes I&-V, and the results showed that magnolol acts as multiple inhibitors of complexes I&-V. Taken together, our results provide new insight into the potential of magnolol as an active ingredient with antifungal inhibitory action to control purple blotch on onions. |
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