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Indentification of huperzine A-producing endophytic fungi isolated from Huperzia serrata

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Abstract

This present study was designed to investigate the production of huperzine A (HupA), an acetylcholine inhibitor, which was produced by an endophytic fungi isolated from Huperzia serrata. Screening of 94 endophytic fungal isolates obtained from plant H. serrata was carried out for the production of HupA. Their morphological characteristics were studied and rDNA sequence analysis was carried out. The cultures were grown in liquid culture medium and the extracted metabolites were analyzed by thin layer chromatography and high performance liquid chromatograph for the presence of HupA. The DPPH scavenging ratio and inhibition ratio of acetylcholinesterase (AchE) of the same were determined. 3 out of 94 strains i.e. S29, L44 and S94 showed significant AchE-inhibitory activity and antioxidant activity. Strain L44 which exhibited maximum yield of HupA (37.63 μg/g on dry weight basis) was identified as Trichoderma species by ITS sequence analysis. In conclusion, endophytic fungi from H. serrata can be used as a new resource of HupA.

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Acknowledgments

This work was supported in part by the Project of Science & Technology Department of Zhejiang Province (2009C33154), Research Project of Zhejiang Pharmaceutical College (ZPCSR2009001).

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Correspondence to Li-Hui Dong.

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Dong, L., Fan, S., Ling, Q. et al. Indentification of huperzine A-producing endophytic fungi isolated from Huperzia serrata . World J Microbiol Biotechnol 30, 1011–1017 (2014). https://doi.org/10.1007/s11274-013-1519-6

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Keywords

  • Huperzia serrata
  • Endophytic fungi
  • Huperzine A
  • HPLC