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题名: Antifungal activity of eucalyptus-derived phenolics against postharvest pathogens of kiwifruits
作者: Oh, Soon-Ok2, 3; Kim, Jung A.3; Jeon, Hae-Sook3; Park, Jong Cheol4; Koh, Young Jin1; Hur, Hyun5; Hur, Jae-Seoun3
刊名: PLANT PATHOLOGY JOURNAL
关键词: biofungicide ; bioresource ; natural substances ; postharvest storage ; soft rot decay
英文摘要: Antifungal activities of natural substrances from Eucalyptus darlympleana, E. globules, E. gunnii and E. unigera were evaluated against postharvest pathogens of kiwifruits, Botrytis cinerea, Botryosphaeria dothidea, and Diaporthe actinidiae, to screen effective natural substances as an alternative to chemical fungicides. Methanol extract of the Eucalyptus trees showed strong antagonistic activity against the pathogenic fungi. Among them, E. unigera and E. darlympleana effectively inhibited mycelial growth of the pathogens. For chemical identification of the antifungal substances, the methanol extract of E. darlympleana leaves was successively partitioned with CH(2)Cl(2), EtOAc, n-BuOH and H(2)O. Among the fractions, CH,Cl, and n-BuOH showed strong inhibitory activity of mycelial growth of the fungi. Five compounds were isolated from EtOAc and n-BuOH fractions subjected to SiO(2) column chromatography. Two phenolic compounds (gallic acid and 3,4-dihydroxy-benzoic acid) and three flavonoid compounds (quercetin, quercetin-3-O-alpha-L-rhamnoside, quercetin-3-O-beta-D-glucoside) were identified by (1)H-NMR and (13)C-NMR spectroscopy. Among them, only gallic acid was found to be effective in mycelial growth and spore germination of B. cinerea at relatively high concentrations. The results suggest that gallic acid can be a safer and more acceptable alternative to current synthetic fungicides controlling soft rot decay of kiwifruit during postharvest storage.
出版日期: 2008-09-01
卷号: 24, 期号:3, 页码:322-327
语种: 英语
收录类别: SCI
学科分类: Agriculture, Multidisciplinary; Plant Sciences
ISSN号: 1598-2254
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/2677
Appears in Collections:中国科学院东亚植物多样性与生物地理学重点实验室_期刊论文

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作者单位: 1.Sunchon Natl Univ, Dept Plant Med, Sunchon 540742, South Korea
2.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Yunnan, Peoples R China
3.Sunchon Natl Univ, Korean Lichen Res Inst, Sunchon 540742, South Korea
4.Sunchon Natl Univ, Dept Oriental Med Resources, Sunchon 540742, South Korea
5.Dongguk Univ, Dept Biol, Seoul 100715, South Korea

Recommended Citation:
Oh, SO; Kim, JA; Jeon, HS; Park, JC; Koh, YJ; Hur, H; Hur, JS.Antifungal activity of eucalyptus-derived phenolics against postharvest pathogens of kiwifruits,PLANT PATHOLOGY JOURNAL,2008,24(3):322-327
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