Botryorhodines A-D, antifungal and cytotoxic depsidones from Botryosphaeria rhodina, an endophyte of the medicinal plant Bidens pilosa

被引:78
作者
Abdou, Randa [1 ]
Scherlach, Kirstin [1 ]
Dahse, Hans-Martin [1 ]
Sattler, Isabel [1 ]
Hertweck, Christian [1 ,2 ]
机构
[1] HKI, Leibniz Inst Nat Prod Res & Infect Biol, D-07745 Jena, Germany
[2] Univ Jena, Jena, Germany
关键词
Antifungal agents; Depsidones; Botryosphaeria rhodina; Endophytes; Polyketides; Symbiosis; BACTERIAL ENDOPHYTES; LICHEN; ACID; METABOLITES; IDENTIFICATION; INHIBITION;
D O I
10.1016/j.phytochem.2009.09.024
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
070307 [化学生物学]; 071010 [生物化学与分子生物学];
摘要
An endophytic fungus (Botryosphaeria rhodina) was isolated from the stems of the medicinal plant Bidens pilosa (Asteraceae) that is known for its anti-inflammatory, antiseptic and antifungal effects. The ethyl acetate extract of the fungal isolate exhibits significant antifungal activity as well as potent cytotoxic and antiproliferative effects against several cancer cell lines. Activity-guided fractionation resulted in the isolation of a complex of four depsidones, botryorhodines A-D and the auxin indole carboxylic acid. Botryorhodine A and B show moderate to weak cytotoxic activities against HeLa cell lines with a CC50 Of 96.97 mu M and 36.41 mu M, respectively. In addition, they also show antifungal activity against a range of pathogenic fungi such as Aspergillus terreus (MIC 26.03 mu M for botryorhodine A and 49.70 mu M for B) and the plant pathogen Fusarium oxysporum (MIC 191.60 mu M for botryorhodine A and 238.80 mu M for B). A potential role of the endophyte in modulating fungal populations living within or attacking the host plant is discussed. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码:110 / 116
页数:7
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