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Chemo-profiling of bioactive metabolites from Chaetomium globosum for biocontrol of Sclerotinia rot and plant growth promotion
Fungal Biology ( IF 2.9 ) Pub Date : 2020-08-01 , DOI: 10.1016/j.funbio.2020.07.009
Rakesh Kumar 1 , Aditi Kundu 1 , Anirban Dutta 1 , Supradip Saha 1 , Amrita Das 2 , Arpan Bhowmik 3
Affiliation  

Abstract Chaetomium globosum Kunze ex. Fries has been known to produce diverse bioactive metabolites, attracting researchers to exploit the biocontrol agent for plant disease management. However, distinct research gaps are visible regarding detail characterization of bioactive metabolites. Thus the current study has been planned to characterize volatile and nonvolatile compounds of most potential strain of C. globosum 5157. GC–MS analysis of hexane fraction revealed twenty-six volatile organic compounds, representing 65.5% of total components in which 3-octanone (21.4%) was found to be most abundant. UPLC-QTOF-MS/MS analysis of ethyl acetate and methanolic fractions resulted tentative characterization of fifteen and eleven metabolites, respectively. Among these, nine metabolites were isolated, purified and characterized using 1H NMR and High resolution mass spectrometric analysis to delineate mass fragmentation pattern for the first time. Antifungal potential of hexane fraction exhibited high inhibitory action against Sclerotium rolfsii (139.2 μg mL−1) whereas ethyl acetate fraction was highly effective against Sclerotinia sclerotiorum (112.1 μg mL−1). Comparative assessment of C. globosum 5157 vis a vis Trichoderma harzianum A28 revealed promising effect of C. globosum 5157 with respect to antifungal properties and plant growth promotion of Brassica seedlings.

中文翻译:

球毛壳菌生物活性代谢物的化学分析用于菌核腐烂的生物防治和植物生长促进

摘要 Chaetomium globosum Kunze ex。众所周知,薯条会产生多种生物活性代谢物,这吸引了研究人员利用这种生物防治剂来管理植物病害。然而,在生物活性代谢物的详细表征方面存在明显的研究空白。因此,目前的研究已计划表征球状梭菌 5157 最潜在菌株的挥发性和非挥发性化合物。己烷馏分的 GC-MS 分析显示 26 种挥发性有机化合物,占总成分的 65.5%,其中 3-辛酮( 21.4%) 被发现是最丰富的。乙酸乙酯和甲醇馏分的 UPLC-QTOF-MS/MS 分析结果分别对 15 种和 11 种代谢物进行了初步表征。其中,分离出 9 种代谢物,使用 1 H NMR 和高分辨率质谱分析进行纯化和表征,首次描绘了质量碎片模式。己烷组分的抗真菌潜力对 Sclerotium rolfsii (139.2 μg mL-1) 表现出高抑制作用,而乙酸乙酯组分对核盘菌 (112.1 μg mL-1) 非常有效。C. globosum 5157 与 Trichoderma harzianum A28 的比较评估揭示了 C. globosum 5157 在抗真菌特性和促进芸苔属植物幼苗生长方面的有希望的效果。2 μg mL-1) 而乙酸乙酯部分对核盘菌非常有效 (112.1 μg mL-1)。C. globosum 5157 与 Trichoderma harzianum A28 的比较评估揭示了 C. globosum 5157 在抗真菌特性和促进芸苔属植物幼苗生长方面的有希望的效果。2 μg mL-1) 而乙酸乙酯部分对核盘菌非常有效 (112.1 μg mL-1)。C. globosum 5157 与 Trichoderma harzianum A28 的比较评估揭示了 C. globosum 5157 在抗真菌特性和促进芸苔属植物幼苗生长方面的有希望的效果。
更新日期:2020-08-01
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