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Diversity and Biological Activities of Endophytic Fungi of Emblica officinalis an Ethnomedicinal Plant of India

机译:印度民族植物Emblica officinalis的内生真菌的多样性和生物活性

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摘要

In the present study, an attempt to evaluate the antimicrobial and antioxidant activity of fungal endophytes inhabiting Emblica officinalis has been made keeping in view the medicinal importance of the selected host plant in Indian traditional practices. A total of four endophytic fungi belonging to Phylum Ascomycetes were isolated from different parts of the plant which were characterized morphologically and by using rDNA-internal transcribed spacer. The most frequently isolated endophyte was Phomopsis sp. The antioxidant activity by 2, 2-diphenyl-1-picrylhydrazyl (DPPH) and reducing power assay, and total phenol were evaluated using ethanolic extract of endophytic fungi. DPPH activities in all the ethanolic extract increased with the increase in concentrations. Endophytes, Phomopsis sp. and Xylaria sp. showed highest antioxidant activity and also had the higher levels of phenolics. Antimicrobial activity of fungal extract were tested against four bacteria namely, Escherichia coli MTCC730, Enteroccocus faecalis MTCC2729, Salmonella enterica ser. paratyphi MTCC735 and Streptococcus pyogenes MTCC1925, and the fungus Candida albicans MTCC183. In general, the fungal extracts inhibited the growth of test organisms except E. coli.
机译:在本研究中,已经进行了尝试来评估居住在余甘中的真菌内生菌的抗微生物和抗氧化活性,同时考虑了所选寄主植物在印度传统实践中的医学重要性。从植物的不同部位分离出总共四种属于内生子囊菌的内生真菌,并通过rDNA内部转录间隔子对其进行了形态学表征。最常分离的内生菌是Phomopsis sp.。使用内生真菌的乙醇提取物评估2,2-二苯基-1-吡啶并肼(DPPH)的抗氧化活性和还原能力测定,以及总酚。所有乙醇提取物中的DPPH活性均随浓度的增加而增加。内生菌,Phomopsis sp.。和Xylaria sp。表现出最高的抗氧化剂活性,也具有较高的酚含量。测试了真菌提取物对四种细菌的抗菌活性,即大肠杆菌MTCC730,粪肠球菌MTCC2729,肠炎沙门氏菌。副伤寒MTCC735和化脓链球菌MTCC1925,以及白色念珠菌MTCC183。通常,真菌提取物抑制除大肠杆菌外的受试生物的生长。

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