논문 (학술지)
Identification of novel compounds, oleanane- and ursane-type triterpene glycosides, from Trevesia palmata: their biocontrol activity against phytopathogenic fungi
| 등록번호 | RPMS-2019-0190741374 | SCI 구분
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※구분 : SCI(SCIE포함), 비SCI |
SCI |
|---|---|---|---|
| 저자명 (주·공동저자) | Kim Bora; Han Jae Woo; Ngo Men Thi; Quang Le Dang; Kim Jin-Cheol; Kim Hun; Choi Gyung Ja | ||
| 논문구분 | 국외전문학술지 | 학술지명 | SCIENTIFIC REPORTS |
| ISSN | 2045-2322 | 학술지 출판일자 | 2018-09-28 |
| 학술지 볼륨번호 | 8 | 논문페이지 | 14522 ~ - |
| 학술지 임팩트팩터 | 4.12 | 기여율 | 50 % |
| 초록 | Plants contain a number of bioactive compounds that exhibit antimicrobial activity, which can berecognized as an important source of agrochemicals for plant disease control. As part of our search fornew antimicrobial agents from natural sources, we found that a crude methanol extract of Trevesiapalmata exhibited a promising antifungal activity against phytopathogenic fungi, such as Magnaportheoryzae and Botrytis cinerea. Furthermore, based on activity-guided fractionation, we isolated fiveantifungal compounds from the methanol extract of T. palmata: two new triterpene glycosides(TPGs), TPG1 (hederagenin-3-O-β-D-glucopyranosyl-(1 → 3)-α-L-rhamnopyranosyl-(1 → 2)-α-Lrhamnopyranosyl-(1 → 2)-α-L-arabinopyranoside) and TPG5 (3-O-α-L-rhamnopyranosyl asiatic acid),along with three known TPGs (TPG2 [macranthoside A], TPG3 [α-hederin], and TPG4 [ilekudinoside D]).The chemical structures of the TPGs were determined by spectroscopic analyses and by comparisonwith literature data. An in vitro antifungal bioassay revealed that except for TPG4 (ilekudinoside D;IC50 >256 μg/ml), the other TPGs exhibited strong antifungal activities against the rice blast pathogenM. oryzae with IC50 values ranging from 2–5 μg/ml. In particular, when the plants were treated withcompound TPG1 (500 μg/ml), disease control values against rice blast, tomato grey mold, tomato lateblight, and wheat leaf rust were 84, 82, 88, and 70%, respectively, compared to the non-treatmentcontrol. Considering the in vitro and in vivo antifungal activities of the TPGs and the T. palmatamethanol extracts, our results suggest that T. palmata can be a useful source to develop new naturalfungicides. | ||
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