Antifungal Activity of Certain Plants of Benin on Fusarium graminearum Cereals Pathogene

Wilfrid Bio N’goye, A. Schubert, Rada Abu-Ammar, C. Vissiennon, V. Ahyi, Zackarie Vissiennon, G. Dramane
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Abstract

Phytopathogenic fungi decrease crop yield and quality and cause crop damage.   The present work aims to study the effectiveness of certain extracts of medicinal and food plants (EtOH, DCM) that are present in the Republic of Benin on the mycelial growth of toxigenic molds responsible for the degradation of cereals. Ethanol, dichloromethane and aqueous extracts were studied in vitro for their antifungal activities against Fusarium graminearum using microdilution methods.  The results show that the minimum inhibitory concentration (MIC) of Ocimum gratissimum essential oil is 2.5μl/ml. Regarding the essential oils of Cymbopogon citractus and Eucalyptus globulus they have a complete inhibition at 0.3μl / ml which is the most concentration tested.  Ethanolic and dichloromethane extracts from different plants showed relative growth of about 77.54% for trunk bark and 41.7% for root bark of Anogeisus leiocarpus. The DCM extract of Momordica charantia showed an inhibition of approximately 59.675% at 800μg/ml.  The essential oils Cymbopogon citractus, Eucalyptus globulus, Ocimum gratissimum and trunk bark of Anogeissus leiocarpus show promise as an antifungal agent.
贝宁部分植物对谷物镰刀菌病原菌的抑菌活性研究
植物病原真菌降低作物产量和品质,造成作物损害。目前的工作旨在研究贝宁共和国存在的某些药用和食用植物提取物(EtOH, DCM)对负责谷物降解的产毒霉菌菌丝生长的有效性。采用微量稀释法研究了乙醇、二氯甲烷和水提物对小麦镰刀菌的体外抑菌活性。结果表明,竹叶精油的最低抑菌浓度(MIC)为2.5μl/ml。在0.3μl / ml浓度下,香茅精油和蓝桉精油具有完全抑制作用,是试验浓度最高的精油。不同植物乙醇和二氯甲烷提取物对平栎树干皮和根皮的相对生长率分别为77.54%和41.7%。在800μg/ml浓度下,苦瓜DCM提取物的抑制率约为59.675%。香茅精油、蓝桉精油、山茱萸精油和平栎树皮精油具有良好的抗真菌作用。
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