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- Title
Effects of neolignans from the stem bark of Magnolia obovata on plant pathogenic fungi.
- Authors
Choi, N. H.; Choi, G. J.; Min, B.-S.; Jang, K. S.; Choi, Y. H.; Kang, M. S.; Park, M. S.; Choi, J. E.; Bae, B. K.; Kim, J.-C.
- Abstract
Aims: To characterize antifungal principles from the methanol extract of Magnolia obovata and to evaluate their antifungal activities against various plant pathogenic fungi. Methods and Results: Four neolignans were isolated from stem bark of M. obovata as antifungal principles and identified as magnolol, honokiol, 4-methoxyhonokiol and obovatol. In mycelial growth inhibition assay, both magnolol and honokiol displayed more potent antifungal activity than 4-methoxyhonokiol and obovatol. Both magnolol and honokiol showed similar in vivo antifungal spectrum against seven plant diseases tested; both compounds effectively suppressed the development of rice blast, tomato late blight, wheat leaf rust and red pepper anthracnose. 4-Methoxyhonokiol and obovatol were highly active to only rice blast and wheat leaf rust respectively. Conclusions: The extract of M. obovata and four neolignans had potent in vivo antifungal activities against plant pathogenic fungi. Significance and Impact of the Study: Neolignans from Magnolia spp. can be used and suggested as a novel antifungal lead compound for the development of new fungicide and directly as a natural fungicide for the control of plant diseases such as rice blast and wheat leaf rust.
- Subjects
FUNGI; DEVELOPMENTAL biology; FUNGICIDES; MYCOLOGY; METHANOL; PHYTOPATHOGENIC microorganisms; PLANT pathologists
- Publication
Journal of Applied Microbiology, 2009, Vol 106, Issue 6, p2057
- ISSN
1364-5072
- Publication type
Article
- DOI
10.1111/j.1365-2672.2009.04175.x