首页> 外文期刊>World Journal of Microbiology and Biotechnology >Bioactive secondary metabolites from Nigrospora sp. LLGLM003, an endophytic fungus of the medicinal plant Moringa oleifera Lam.
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Bioactive secondary metabolites from Nigrospora sp. LLGLM003, an endophytic fungus of the medicinal plant Moringa oleifera Lam.

机译:Nigrospora sp。的生物活性次生代谢产物。 LLGLM003,药用植物辣木的内生真菌。

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摘要

An endophytic fungus was isolated from the root of the medicinal plant Moringa oleifera Lam. Based on analyzing the rDNA sequence, the fungus was identified as Nigrospora sp. This is the first report of the isolation of endophytic Nigrospora from M. oleifera. By bioassay-guided fractionation, four antifungal secondary metabolites were isolated from liquid cultures of the fungus Nigrospora sp. LLGLM003, and their chemical structures were determined to be griseofulvin (1), dechlorogriseofulvin (2), 8-dihydroramulosin (3) and mellein (4) on the basis of spectroscopic analyses. Compound 2, 3 and 4 were isolated from Nigrospora sp. for the first time. In vitro antifungal assay showed that griseofulvin displayed clear inhibition of the growth of 8 plant pathogenic fungi. Dechlorogriseofulvin and mellein exhibited only weak antifungal activities, whereas 8-dihydroramulosin displayed no antifungal activities.
机译:从药用植物辣木(Moringa oleifera Lam)的根中分离出内生真菌。通过分析rDNA序列,将真菌鉴定为Nigrospora sp。这是从油橄榄分枝杆菌中分离出内生黑质孢子虫的第一份报告。通过生物测定指导的分级分离,从真菌Nigrospora sp。的液体培养物中分离出四种抗真菌次生代谢产物。根据光谱分析,确定了LLGLM003及其化学结构为灰黄霉素(1),脱氯griseofulvin(2),8-二氢ramulosin(3)和mellein(4)。从Nigrospora sp。分离化合物2、3和4。首次。体外抗真菌试验表明灰黄霉素对8种植物病原真菌的生长具有明显的抑制作用。 Dechlorogriseofulvin和mellein仅表现出弱的抗真菌活性,而8-dihydroramulosin没有表现出抗真菌的活性。

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