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Volume 9 Issue 4
Dec.  2018
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Article Navigation >  Journal of Tropical Biology  > 2018  >  9(4): 433-439

HU Zhengbo, WU Yougen, YI Tianfeng, YU Jing, YANG Dongmei, ZHANG Junfeng. Identification and Comparison of Microbial Inhibition Activity of 50 Strains of Noni Endophytic Fungi[J]. Journal of Tropical Biology, 2018, 9(4): 433-439. doi: 10.15886/j.cnki.rdswxb.2018.04.011
Citation: HU Zhengbo, WU Yougen, YI Tianfeng, YU Jing, YANG Dongmei, ZHANG Junfeng. Identification and Comparison of Microbial Inhibition Activity of 50 Strains of Noni Endophytic Fungi[J]. Journal of Tropical Biology, 2018, 9(4): 433-439. doi: 10.15886/j.cnki.rdswxb.2018.04.011
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Identification and Comparison of Microbial Inhibition Activity of 50 Strains of Noni Endophytic Fungi

doi: 10.15886/j.cnki.rdswxb.2018.04.011

  • Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, Hainan 570228 China

  • Received Date: 2018-08-22
  • Rev Recd Date: 2018-09-12
  • The 50 strains of Noni（ Morinda citrifolia Linn） endophytic fungi obtained earlier were preliminarily identified,of which 36 strains were found to belong to 9 orders,11 families and 11 genera,and 17 strains belonged to the genus Aspergillus,which were dominant in populations. The antifungal activity of each strain was evaluated with 3 indicator fungi,Pyricularia oryzae,Phytophthora capsici and Fusarium oxysporum. It was found that 19 strains of the endophytic fungi had inhibitory effects on at least two indicator fungi,of which strains J7 and M35 had the highest antifungal activity. Furthermore,Staphylococcus aureus,Escherichia coli,Salmonella spp. and Bacillus subtilis were used as indicator bacteria to evaluate the antibacterial activity of the secondary endophytic metabolites of each strain by using the disk diffusion method. Among the secondary endophytic metabolites the ethyl acetate extract of 18 endophytic fungi inhibited at least one indicator bacterium,and the strains M2,M33,M50 and M53 had antibacterial activities against the four indicator bacteria.
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Identification and Comparison of Microbial Inhibition Activity of 50 Strains of Noni Endophytic Fungi

doi: 10.15886/j.cnki.rdswxb.2018.04.011
  • Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, Hainan 570228 China
  • Received Date: 2018-08-22
  • Rev Recd Date: 2018-09-12

Abstract: The 50 strains of Noni（ Morinda citrifolia Linn） endophytic fungi obtained earlier were preliminarily identified,of which 36 strains were found to belong to 9 orders,11 families and 11 genera,and 17 strains belonged to the genus Aspergillus,which were dominant in populations. The antifungal activity of each strain was evaluated with 3 indicator fungi,Pyricularia oryzae,Phytophthora capsici and Fusarium oxysporum. It was found that 19 strains of the endophytic fungi had inhibitory effects on at least two indicator fungi,of which strains J7 and M35 had the highest antifungal activity. Furthermore,Staphylococcus aureus,Escherichia coli,Salmonella spp. and Bacillus subtilis were used as indicator bacteria to evaluate the antibacterial activity of the secondary endophytic metabolites of each strain by using the disk diffusion method. Among the secondary endophytic metabolites the ethyl acetate extract of 18 endophytic fungi inhibited at least one indicator bacterium,and the strains M2,M33,M50 and M53 had antibacterial activities against the four indicator bacteria.

HU Zhengbo, WU Yougen, YI Tianfeng, YU Jing, YANG Dongmei, ZHANG Junfeng. Identification and Comparison of Microbial Inhibition Activity of 50 Strains of Noni Endophytic Fungi[J]. Journal of Tropical Biology, 2018, 9(4): 433-439. doi: 10.15886/j.cnki.rdswxb.2018.04.011
Citation: HU Zhengbo, WU Yougen, YI Tianfeng, YU Jing, YANG Dongmei, ZHANG Junfeng. Identification and Comparison of Microbial Inhibition Activity of 50 Strains of Noni Endophytic Fungi[J]. Journal of Tropical Biology, 2018, 9(4): 433-439. doi: 10.15886/j.cnki.rdswxb.2018.04.011
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