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首页> 外文期刊>Australian Journal of Crop Science >Evaluation of inhibitory effects of extracts of plants from western Iran against Phytophthora drechsleri
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Evaluation of inhibitory effects of extracts of plants from western Iran against Phytophthora drechsleri

机译：评价伊朗西部植物提取物对德氏疫霉的抑制作用

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Crude aqueous and methanol extracts of 121 plant species from 41 families, collected from the west of Iran, were screened for antifungal activity against mycelial growth of Phytophthora drechsleri. The bioassay used was based on the paper disc diffusion method with four replicates. Extracts of 38 of 121 (about 31%) plant species had inhibitory activity against this phytopathogenic fungus, among which 23 species measurably inhibited the growth of Phytophthora drechsleri. A methanol extract of Xanthium strumarium had the strongest inhibitory activity (17.79±1.35 mm) against P. drechsleri followed by extracts of Glycyrrhiza glabra, Verbascum sp., Hypericum perforatum, Centaura depressa, Centaura sp., Lamium amplexicaule, Haplophyllum perforatum. An investigation of the efficacy of extracts of different plant parts on mycelial inhibition of P. drechsleri, using the paper disc method, indicated that the inflorescence and fruits of cocklebur (Xanthium strumarium) showed significantly more inhibitory effect than the other plant parts against the fungus. Two common species of cocklebur, X. strumarium and X. spinosa, grown around the city of Kermanshah, inhibited mycelial growth of the tested fungus, but extracts of X. strumarium had significantly more inhibitory effect against P. dreschleri than X. spinosa. The results of fractionation of leaf, fruit and inflorescence by thin layer chromatography (TLC) indicated that yellow and blue fractions (under UV) with relative fronts (Rf) equal to 0.93 and 0.98 of leaf, fruit and inflorescence fractions exhibited the highest inhibitory effect against P. dreschleri. These results suggest that cocklebur has potential for control of P. dreschleri and further green house and farm studies are recommended.
机译：筛选了从伊朗西部收集的来自41个科的121种植物的粗制水和甲醇提取物的抗真菌活性，以防疫霉菌的菌丝生长。所使用的生物测定基于纸盘扩散法，一式四份。 121种植物中有38种（约占31％）的提取物对这种植物病原真菌具有抑制活性，其中23种可测量地抑制了德氏疫霉的生长。 Xanthium strumarium的甲醇提取物对Drechsleri的抑制作用最强（17.79±1.35 mm），其次是甘草，Verbascum sp。，贯叶连翘，Centaura depressa，Centaura sp。，羊膜，Haplophyllum perforatum。用纸盘法研究了不同植物部位的提取物对德氏疟原虫菌丝体抑制的功效，结果表明，与其他植物部位相比，鸡冠花的花序和果实对真菌的抑制作用要强得多。 。在克尔曼沙什市周围生长的两种常见的鸟蛤，即X. strumarium和X. spinosa抑制了被测真菌的菌丝体生长，但是与X. spinosa相比，X。strumarium的提取物对德氏杆菌的抑制作用要强得多。薄层色谱法（TLC）对叶，果和花序级分的结果表明，黄色和蓝色级分（相对紫外线）分别等于叶，果和花序级分的0.93和0.98，表现出最高的抑制作用。对抗德雷克勒里。这些结果表明，鸟蛤具有控制德氏假单胞菌的潜力，因此建议进一步进行温室和农场研究。

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